Downhole fallen object detection method and device, electronic equipment, medium and logging instrument

Abstract

The invention relates to a downhole fallen object detection method and device, electronic equipment, a medium and a logging instrument, and relates to the technical field of logging engineering. The method comprises the following steps: acquiring a plurality of detection signals which correspond to a plurality of set directions and are acquired by a plurality of first detection mechanisms arranged at one end of a falling object detection main body when the falling object detection main body moves to the underground; determining whether an instrument to be salvaged is detected or not by using the plurality of detection signals; if the to-be-fished instrument is detected, determining the orientation of the to-be-fished instrument by using a plurality of detection signals corresponding to the plurality of set directions, and continuously controlling the falling object detection main body to move underground; and in the process of continuously moving to the underground, the multiple first detection mechanisms and a second detection mechanism arranged on the falling object detection main body are used for determining the distance for penetrating through the instrument to be salvaged. According to the embodiment of the invention, underground fallen object detection can be realized.

Description

Technical Field

[0001] The present disclosure relates to the field of well logging engineering technology, and in particular to a method and device for detecting fallen objects in a well, electronic equipment, a medium and a well logging instrument. Background Art

[0002] Retrieving logging instruments is a complex and critical task, because during the measurement process, the instruments are prone to blockage or jamming due to well conditions or operation, thus affecting the entire logging process. Determining the location and status of the salvage is one of the most critical and difficult links in the salvage process.

[0003] For through-hole fishing, since the cable and downhole instruments are still effectively connected, we can receive the signals from the downhole instruments. By analyzing the signals uploaded by the instruments and the logging curves before the jam, we can determine and calculate the location of the downhole instruments without the need for separate fishing (fallen object detection) operations.

[0004] When the logging instrument falls into the well and the cable is disconnected from the downhole instrument, we need to use a different method to fish. Since the shell and connector parts of the logging instrument are made of metal, we can use a soft electrode to fish in the well. The measurement principle of this method is that when the electrode contacts the downhole instrument, the electrode curve will immediately return to zero, so that the position of the downhole instrument can be accurately detected. In addition to the soft electrode, we can also use a magnetic positioning instrument to fish. The measurement principle of this method is that when encountering metal, the magnetic positioning instrument will generate a potential difference, forming a characteristic curve.

[0005] When we cannot successfully fish by using soft electrodes, magnetic positioning instruments, etc., we can try to use other logging instruments such as acoustic, lateral, and radioactive logging instruments to fish. By using the unique curve response of the logging instrument in the downhole instrument, we can detect the location of the downhole instrument. However, this method needs to be used with caution when the downhole situation is complicated. In some cases, the downhole instrument carries a radioactive source and is located near the fish head. We can use the gamma logging instrument to fish. When the distance between the instrument and the radioactive source is within a few meters, the gamma curve will have a characteristic response, which helps us determine the location of the downhole instrument.

[0006] In addition to the traditional fishing methods, there are some advanced methods, such as instruments using fluxgate and ultrasonic principles. However, these methods have certain limitations.

[0007] When the logging team conducts fishing operations using electrodes and magnetic positioning, they may face the following problems:

[0008] 1. Unable to measure the bottom: Since the measurement point of the magnetic positioning and electrode logging instruments is located in the middle of the instrument, the bottom cannot be directly measured, so it is impossible to determine whether the blockage is caused by the instrument itself or mud and sand.

[0009] 2. External diameter limitation: Due to the external diameter of the instrument, it is impossible to pass through the top of the instrument smoothly, and it is also impossible to fish smoothly. After the instrument to be salvaged is misaligned, due to the limitation of the measurement point, there will be a certain distance between the instrument measurement point and the top of the fish, and the diameter of the instrument will affect the measurement effect.

[0010] 3. Delay phenomenon: There is a certain reaction time delay in judging whether there is an obstruction through the logging curve. In the salvage process, saving time is particularly important, otherwise it will increase the risk of accidents.

[0011] 4. Increased instrument length: Since the electrode and magnetic positioning instrument are connected in series, the total length of the instrument increases, thereby increasing the risk of measurement.

[0012] The above are some key links and problems that may be encountered in the process of logging instrument salvage. In actual operation, we need to fully consider these factors to ensure the smooth progress of the salvage mission. Summary of the invention

[0013] The present invention discloses a method and device for detecting fallen objects in a well, electronic equipment, a medium and a technical solution for a well logging instrument.

[0014] According to one aspect of the present disclosure, a method for detecting fallen objects in a well is provided, comprising:

[0015] Acquire a plurality of detection signals corresponding to a plurality of set directions collected by a plurality of first detection mechanisms disposed at one end of the object detection body when the object detection body moves downhole;

[0016] Determining whether the instrument to be salvaged is detected using the multiple detection signals;

[0017] If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well;

[0018] During the process of continuing to move underground, the plurality of first detection mechanisms and the second detection mechanism arranged on the fallen object detection body are used to determine the distance of the instrument to be salvaged.

[0019] Preferably, the detection method further comprises: if the instrument to be salvaged is not detected and an obstruction detection mechanism installed at one end of the object detection body detects an obstruction, determining that the instrument not to be salvaged is obstructed;

[0020] When the non-salvageable instrument encounters an obstruction, a vibrator arranged on or in the fallen object detection body is activated;

[0021] After the vibrator vibrates for a preset time, the object detection body is continuously controlled to move downhole; during the process of continuing to control the object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected;

[0022] If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continued to be controlled to move downhole; during the continued movement downhole, the distance across the instrument to be salvaged is determined using the multiple first detection mechanisms and the second detection mechanism provided on the object detection body;

[0023] Otherwise, when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the object detection body continues to detect obstruction, a third detection mechanism installed on the inner or outer side of the object detection body is driven to extend out of the object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected; and / or,

[0024] The method of using the extended third detection mechanism to determine whether the instrument to be salvaged is detected comprises:

[0025] If the detection signal collected by the third detection mechanism changes to a set value, it is determined that the instrument to be salvaged is detected; otherwise, it is determined that the instrument to be salvaged is not detected; and / or,

[0026] The method further includes: after the instrument to be salvaged is detected by the extended third detection mechanism, the thickness of the obstruction above the instrument to be salvaged is determined by the extended third detection mechanism; the obstruction is eliminated according to the thickness of the obstruction; and / or,

[0027] The method for eliminating the obstruction according to the thickness corresponding to the obstruction includes:

[0028] If the thickness of the obstacle is less than or equal to the set thickness, the obstacle is eliminated by using the obstacle impact solution;

[0029] Otherwise, using a circulating sand removal scheme to discharge the obstruction from the well to the outside of the well to eliminate the obstruction; and / or,

[0030] The method of driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body comprises:

[0031] The driving mechanism connected to the third detection mechanism is controlled to move, thereby driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body.

[0032] Preferably, the method of using the multiple detection signals to determine whether the instrument to be salvaged is detected comprises:

[0033] If one or more of the multiple detection signals changes to a set value, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected; and / or,

[0034] The method of using the multiple detection signals to determine whether the instrument to be salvaged is detected also includes:

[0035] If one or more of the plurality of detection signals changes to a set value and an obstruction is detected by an obstruction detection mechanism installed at one end of the falling object detection body, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected; and / or,

[0036] The method of determining the position of the instrument to be salvaged by using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected includes:

[0037] If one or more of the detection signals corresponding to the multiple set directions changes to a set value, the position of the first detection mechanism corresponding to the one or more detection signals in the object detection body is obtained, and the position is configured as the orientation of the instrument to be salvaged; and / or,

[0038] If the instrument to be salvaged is detected, the method of determining the position of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions also includes:

[0039] If, except for the one or several detection signals that change to the set value, the change values ​​of other detection signals among the multiple detection signals corresponding to the multiple set directions are less than the set change value, the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body is obtained, and the position is configured as the orientation of the instrument to be salvaged; and / or,

[0040] It also includes: determining an effective distance for the salvage device to salvage the instrument to be salvaged according to the distance of the salvage device passing through the instrument to be salvaged; and / or,

[0041] The plurality of detection signals collected by the plurality of first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism are configured as resistivity; and / or,

[0042] The multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism are configured as detection signals corresponding to the radial direction of the falling object detection body; and / or,

[0043] The method of determining the distance across the instrument to be salvaged using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body includes: calculating the physical distance between the multiple first detection mechanisms and the second detection mechanism on the fallen object detection body.

[0044] According to one aspect of the present disclosure, there is provided a downhole object detection device, comprising:

[0045] An acquisition unit, used for acquiring a plurality of detection signals corresponding to a plurality of set directions collected by a plurality of first detection mechanisms arranged at one end of the object detection body when the object detection body moves downhole;

[0046] a detection determination unit, configured to determine whether an instrument to be salvaged is detected using the plurality of detection signals;

[0047] A position determination and control unit, for determining the position of the instrument to be salvaged by using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continuing to control the object detection body to move downhole;

[0048] The crossing distance determination unit is used to determine the crossing distance of the instrument to be salvaged by using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body during the process of continuing to move underground.

[0049] Preferably, the detection device further comprises: a unit for determining whether the non-to-be-salvaged instrument has encountered an obstruction;

[0050] The non-to-be-salvaged instrument encountering obstruction determination unit is used to determine that the non-to-be-salvaged instrument encounters obstruction if the to-be-salvaged instrument is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body detects obstruction;

[0051] A starting unit, used for starting a vibrator provided on or in the fallen object detection body when the non-to-be-salvaged instrument encounters an obstacle;

[0052] A control unit, used for continuing to control the falling object detection body to move downhole after the vibrator vibrates for a preset time;

[0053] The detection determination unit is further used to continue to control the falling object detection body to move downhole after the preset time, and to continue to determine whether the instrument to be salvaged is detected by using the multiple detection signals;

[0054] The position determination and control unit is used to determine the position of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continue to control the object detection body to move downhole;

[0055] The crossing distance determination unit is used to determine the crossing distance of the instrument to be salvaged by using the plurality of first detection mechanisms and the second detection mechanism provided on the fallen object detection body during the process of continuing to move downhole;

[0056] Otherwise, the control unit is further configured to drive a third detection mechanism installed on the inner or outer side of the fallen object detection body to extend out of the fallen object detection body when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body continues to detect obstruction, and use the extended third detection mechanism to determine whether the instrument to be salvaged is detected; and / or,

[0057] The detection and determination unit comprises: a first comparison unit;

[0058] The first comparison unit is used to determine that the instrument to be salvaged is detected if the detection signal collected by the third detection mechanism changes to a set value; otherwise, determine that the instrument to be salvaged is not detected; and / or,

[0059] It also includes: a unit for eliminating the thickness of obstacles encountered;

[0060] The obstacle thickness elimination unit is used to determine the thickness of the obstacle above the instrument to be salvaged by using the extended third detection mechanism after the instrument to be salvaged is detected by using the extended third detection mechanism; eliminate the obstacle according to the thickness of the obstacle; and / or,

[0061] The obstacle thickness elimination unit includes: a scheme selection unit;

[0062] The scheme selection scheme is used to eliminate the obstruction by using the obstruction impact scheme if the thickness corresponding to the obstruction is less than or equal to the set thickness; otherwise, the obstruction is discharged from the well to the outside by using the circulating sand removal scheme to eliminate the obstruction; and / or,

[0063] The control unit comprises: a first control unit and a second control unit;

[0064] The first control unit is used to control the action of a driving mechanism connected to the third detection mechanism;

[0065] Furthermore, the second control unit is used to drive a third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body.

[0066] Preferably, the detection and determination unit comprises: a second comparison unit;

[0067] The second comparison unit is used to detect the instrument to be salvaged if one or more of the multiple detection signals changes to a set value; otherwise, the instrument to be salvaged is not detected; and / or,

[0068] The detection and determination unit further includes: an obstruction detection unit;

[0069] The second comparison unit is used to detect the instrument to be salvaged if one or more of the multiple detection signals changes to a set value; and the obstruction detection unit is used to detect obstruction using an obstruction detection mechanism installed at one end of the falling object detection body, and then detect the instrument to be salvaged; otherwise, the instrument to be salvaged is not detected; and / or,

[0070] The orientation determination unit comprises: a third comparison unit and a configuration unit;

[0071] The third comparison unit is used for, if one or several detection signals corresponding to the multiple detection signals corresponding to the multiple set directions change to a set value, the configuration unit obtains the position of the first detection mechanism corresponding to the one or several detection signals in the object detection body, and configures the position as the orientation of the instrument to be salvaged; and / or,

[0072] The position determination unit further includes: a fourth comparison unit;

[0073] The fourth comparison unit is used for, if, except for the one or several detection signals that change to the set value, the change values ​​of other detection signals among the multiple detection signals corresponding to the multiple set directions are less than the set change value, then the configuration unit obtains the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body, and configures the position as the orientation of the instrument to be salvaged; and / or,

[0074] It also includes: a fishing instrument effective distance determination unit;

[0075] The effective distance determination unit for salvaging the instrument determines the effective distance for the salvage device to salvage the instrument to be salvaged according to the distance of the instrument to be salvaged; and / or,

[0076] It also includes: a detection signal configuration unit;

[0077] The detection signal configuration unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism as resistivity; and / or,

[0078] It also includes: a detection signal direction setting unit;

[0079] The detection signal direction setting unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism as detection signals corresponding to the radial direction of the falling object detection body; and / or,

[0080] A crossing distance determination unit includes: a calculation unit;

[0081] The calculation unit is used to calculate the physical distance between the plurality of first detection mechanisms and the second detection mechanism on the falling object detection body.

[0082] According to one aspect of the present disclosure, there is provided an electronic device, including:

[0083] processor;

[0084] a memory for storing processor-executable instructions;

[0085] Wherein, the processor is configured to: execute the above-mentioned method for detecting fallen objects in a well.

[0086] According to one aspect of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the above-mentioned method for detecting fallen objects in a well is implemented.

[0087] According to one aspect of the present disclosure, a well logging instrument is provided, which applies the downhole fallen object detection method as described above; and / or, includes or applies the downhole fallen object detection device as described above; and / or, includes or applies the electronic device as described above; and / or, includes or applies the computer-readable storage medium as described above.

[0088] Preferably, a plurality of first detection mechanisms are provided at one end of the falling object detection body, and a second detection mechanism is provided on the falling object detection body;

[0089] wherein, when the object detection body moves downhole, a plurality of detection signals corresponding to a plurality of set directions collected by the plurality of first detection mechanisms are obtained;

[0090] Determining whether the instrument to be salvaged is detected using the multiple detection signals;

[0091] If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well;

[0092] During the process of continuing to move downhole, the distance of the instrument to be salvaged is determined by using the plurality of first detection mechanisms and the second detection mechanism provided on the object detection body; and / or,

[0093] The plurality of first detection mechanisms are configured as measurement array electrodes, the measurement array electrodes comprising: a plurality of measurement electrodes; the measurement electrodes are arranged on the outer side of the falling object detection body according to a plurality of set directions, and are used to collect a plurality of detection signals corresponding to the plurality of set directions; and / or,

[0094] The second detection mechanism is configured to be provided on the falling object detection body to measure the electrode ring and / or the magnetic positioning short circuit;

[0095] During the process of continuing to move downhole, the distance of the instrument to be salvaged is determined by using the plurality of first detection mechanisms and the measuring electrode rings and / or the magnetic positioning short circuit arranged on the object detection body; and / or,

[0096] A driving mechanism is provided inside or outside the falling object detection body, and the driving mechanism is connected to the third detection mechanism;

[0097] When the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the object detection body continues to detect obstruction, a third detection mechanism installed on the inner or outer side of the object detection body is driven to extend out of the object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected; wherein the obstruction detection mechanism is on the same side as the plurality of first detection mechanisms; and / or,

[0098] The driving mechanism connected to the third detection mechanism comprises: a driving screw arranged on the inner side or the outer side of the falling object detection body and a transmission screw connected to the driving screw;

[0099] The driving screw is driven to move by the driving screw, thereby driving a third detection mechanism connected to the driving screw to extend out of the falling object detection body; and / or,

[0100] The third detection mechanism and the driving mechanism connected to the third detection mechanism are arranged in the cavity in the falling object detection body; and / or,

[0101] The third detection mechanism is configured as a probe electrode; and / or,

[0102] A vibrator is also provided on or inside the fallen object detection body. When an obstruction detection mechanism installed at one end of the fallen object detection body detects that the non-to-be-salvaged instrument encounters an obstruction, the vibrator provided on or inside the fallen object detection body is activated;

[0103] After the vibrator vibrates for a preset time, the object detection body is continuously controlled to move downhole; during the process of continuing to control the object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected; and / or,

[0104] The falling object detection body comprises: a sheath and an insulating short section connected to the sheath and smaller than the size of the sheath; and / or,

[0105] An insulating ring is provided at the connection between the sheath and the insulating nipple; and / or,

[0106] The insulating short section comprises: an insulating shell and the plurality of first detection mechanisms and / or the second detection mechanisms and / or the obstruction detection mechanisms arranged outside the insulating shell.

[0107] In the embodiments disclosed herein, a method and device for detecting fallen objects in a well, electronic equipment, a medium and a well logging instrument technical solution are proposed, which make up for the deficiencies of the existing technology and provide sufficient supporting data for salvage operation engineers to solve the problem of not being able to detect the location of the instrument to be salvaged and the distance across the instrument to be salvaged.

[0108] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0109] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0110] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used to illustrate the technical solutions of the present disclosure together with the specification.

[0111] Figure 1 A flow chart showing a method for detecting objects in a well according to an embodiment of the present disclosure is shown;

[0112] Figure 2 A block diagram of a downhole object detection device according to an embodiment of the present disclosure is shown;

[0113] Figure 3 is a block diagram of an electronic device 800 according to an exemplary embodiment;

[0114] Figure 4 is a block diagram of an electronic device 1900 according to an exemplary embodiment;

[0115] Figure 5 A half-section mechanical schematic diagram of a well logging instrument for downhole object detection according to an embodiment of the present disclosure is shown;

[0116] Figure 6 A schematic diagram of the three-dimensional structure of a well logging instrument for downhole fallen object detection according to an embodiment of the present disclosure is shown (the third detection mechanism extends from the inside or outside of the fallen object detection body);

[0117] Figure 7 A full-section mechanical schematic diagram of a well logging instrument for downhole object detection according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0118] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0119] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0120] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0121] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0122] It can be understood that the above-mentioned various method embodiments mentioned in the present disclosure can be combined with each other to form a combined embodiment without violating the principle logic. Due to space limitations, the present disclosure will not go into details.

[0123] In addition, the present disclosure also provides an image processing device, an electronic device, a computer-readable storage medium, and a program, all of which can be used to implement any image processing method provided by the present disclosure. The corresponding technical solutions and descriptions are referred to the corresponding records in the method part and will not be repeated here.

[0124] Figure 1 A flow chart of a method for detecting fallen objects in a well according to an embodiment of the present disclosure is shown. Figure 5 A half-section mechanical schematic diagram of a well logging instrument for downhole object detection according to an embodiment of the present disclosure is shown; Figure 6 A schematic diagram of the three-dimensional structure of a well logging instrument for downhole fallen object detection according to an embodiment of the present disclosure is shown (the third detection mechanism extends from the inside or outside of the fallen object detection body); Figure 7 FIG. 2 shows a schematic diagram of a well logging instrument for detecting objects in a well according to an embodiment of the present disclosure. Figure 1 As shown, combined with Figure 5-7 For explanation, the downhole fallen object detection method includes: step S101: obtaining multiple detection signals corresponding to multiple set directions collected by multiple first detection mechanisms set at one end of the fallen object detection body when the fallen object detection body moves downhole; step S102: using the multiple detection signals to determine whether the instrument to be salvaged is detected; step S103: if the instrument to be salvaged is detected, using the multiple detection signals corresponding to the multiple set directions to determine the position of the instrument to be salvaged, and continue to control the downhole falling object detection body to move downhole; step S104: during the continued movement downhole, using the multiple first detection mechanisms and the second detection mechanism set on the fallen object detection body to determine the distance across the instrument to be salvaged. It makes up for the deficiencies of the existing technology and provides sufficient supporting data for salvage engineers to solve the problem of not being able to detect the position of the instrument to be salvaged and the distance across the instrument to be salvaged.

[0125] Step S101: Acquire a plurality of detection signals corresponding to a plurality of set directions collected by a plurality of first detection mechanisms arranged at one end of the object detection body when the object detection body moves downhole.

[0126] In the embodiments of the present disclosure and other possible embodiments, those skilled in the art may configure or select the multiple first detection mechanisms disposed at one end of the falling object detection body. For example, the multiple first detection mechanisms disposed at one end of the falling object detection body may be configured as follows: Figure 5-7 The measurement array electrode 11 shown can also be configured as a plurality of magnetic positioning mechanisms or other detection mechanisms that can detect the corresponding detection of the instrument to be salvaged. Figure 5-7 When the measuring array electrode 11 is shown, the multiple detection signals collected by the multiple first detection mechanisms are configured as resistivity; and when the multiple first detection mechanisms arranged at one end of the falling object detection body can be configured with multiple magnetic positioning mechanisms (for example, coils or Hall elements), the multiple detection signals collected by the multiple first detection mechanisms are configured as corresponding induced electromotive forces.

[0127] In the embodiments of the present disclosure and other possible embodiments, a plurality of first detection mechanisms are installed at one end of the falling object detection body at equal or unequal intervals. For example, the number of the plurality of first detection mechanisms is configured to be 4, and in this case, the 4 first detection mechanisms are installed at one end of the falling object detection body at equal intervals. Among them, those skilled in the art can configure the number of the plurality of first detection mechanisms or select equal intervals or unequal intervals as needed.

[0128] Furthermore, in the embodiments of the present disclosure and other possible embodiments, a plurality of first detection mechanisms are installed at equal distances and are evenly arranged in the radial direction of the outer side of the falling object detection body. At this time, the plurality of detection signals collected by the plurality of first detection mechanisms are detection signals corresponding to the radial direction perpendicular to the outer side of the falling object detection body.

[0129] In the embodiment of the present disclosure and other possible embodiments, the gating switching circuit connected to the multiple first detection mechanisms starts to work, switching the power supply every second, so that the multiple first detection mechanisms are powered in turn, forming a periodic circular power supply.

[0130] Step S102: using the multiple detection signals to determine whether the instrument to be salvaged is detected.

[0131] In an embodiment of the present disclosure, the method of determining whether the instrument to be salvaged is detected using the multiple detection signals includes: if one or several detection signals among the multiple detection signals change to a set value, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected.

[0132] In the embodiment of the present disclosure and other possible embodiments, when one or more of the plurality of first detection mechanisms detects the instrument to be salvaged, the detection signal corresponding to the one or more detections changes to a set value. Among them, those skilled in the art can configure or select the set value. For example, when the plurality of first detection mechanisms at one end of the falling object detection body are configured as Figure 5-7 When the measuring array electrode 11 is shown, the multiple detection signals collected by the multiple first detection mechanisms are configured as resistivity. When one or several measuring electrodes in the measuring array electrode 11 detect the instrument to be salvaged, the resistivity corresponding to the one or several measuring electrodes changes to the set value O; or, when the multiple first detection mechanisms at one end of the fallen object detection body are configured as magnetic positioning mechanisms, the multiple detection signals collected by the multiple magnetic positioning mechanisms are configured as induced electromotive force. When one or several magnetic positioning mechanisms in the multiple magnetic positioning mechanisms detect the instrument to be salvaged, the induced electromotive force corresponding to the one or several magnetic positioning mechanisms changes to the set value (the set value corresponding to the induced electromotive force).

[0133] In an embodiment of the present disclosure, the method of determining whether the instrument to be salvaged is detected using the multiple detection signals further includes: if one or several detection signals among the multiple detection signals change to a set value, and obstruction is detected using an obstruction detection mechanism installed at one end of the fallen object detection body, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected.

[0134] In the embodiments of the present disclosure and other possible embodiments, Figure 5-7 As shown, an obstruction detection mechanism 6 is also provided at one end of the falling object detection body. More specifically, the obstruction detection mechanism 6 is provided at an axial position at one end of the falling object detection body, or the obstruction detection mechanism 6 is provided outside one end of the falling object detection body between the plurality of first detection mechanisms.

[0135] In the embodiment of the present disclosure and other possible embodiments, the resistance detection mechanism 6 can be configured as a pressure touch sensor or a touch switch, and when the object detection body moves downhole and encounters resistance, the resistance detection mechanism 6 is activated. For example, when the pressure touch sensor or the touch switch detects resistance (encountering the instrument to be salvaged or mud and sand, etc.), the pressure touch sensor generates a pressure signal or the touch switch is activated.

[0136] Step S103: If the instrument to be salvaged is detected, the location of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well.

[0137] In an embodiment of the present disclosure, if the instrument to be salvaged is detected, the method of determining the position of the instrument to be salvaged by using multiple detection signals corresponding to the multiple set directions includes: if one or several detection signals among the multiple detection signals corresponding to the multiple set directions change to a set value, then obtaining the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body, and configuring the position as the position of the instrument to be salvaged.

[0138] For example, the number of the multiple first detection mechanisms is configured to be 4, and the positions of the 4 first detection mechanisms on the fallen object detection body have been recorded in advance. When the detection signals corresponding to two of the first detection mechanisms change to the set values, the positions of the first detection mechanisms corresponding to the two first detection mechanisms on the fallen object detection body are obtained, and the positions are configured as the orientation of the instrument to be salvaged.

[0139] In an embodiment of the present disclosure, if the instrument to be salvaged is detected, the method of determining the position of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions also includes: if, in addition to the one or several detection signals corresponding to the set value, the change values ​​of other detection signals in the multiple detection signals corresponding to the multiple set directions are less than the set change value, then the position of the first detection mechanism corresponding to the one or several detection signals in the falling object detection body is obtained, and the position is configured as the position of the instrument to be salvaged. Among them, those skilled in the art can configure the set change value. For example, the set change value can be configured to 0.1.

[0140] For example, the number of the multiple first detection mechanisms is configured to be 4, and the positions of the 4 first detection mechanisms have been recorded in advance in the fallen object detection body. When the detection signals corresponding to two of the first detection mechanisms change to a set value; at the same time, the detection signal change values ​​corresponding to the other two first detection mechanisms in other positions are less than the set change value, then the positions of the first detection mechanisms corresponding to the two first detection mechanisms whose detection signals change to the set values ​​in the fallen object detection body are obtained, and the positions are configured as the positions of the instruments to be salvaged.

[0141] Step S104: During the process of continuing to move underground, the plurality of first detection mechanisms and the second detection mechanism provided on the fallen object detection body are used to determine the distance of the instrument to be salvaged.

[0142] In an embodiment of the present disclosure, the method of determining the distance across the instrument to be salvaged using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body includes: calculating the physical distance between the multiple first detection mechanisms and the second detection mechanism on the fallen object detection body.

[0143] In the embodiments of the present disclosure and other possible embodiments, Figure 5-7 As shown, the second detection mechanism is configured as a measuring electrode ring 9 and / or a magnetic positioning short circuit 10 arranged on the fallen object detection body; during the continued movement downhole, the multiple first detection mechanisms and the measuring electrode ring 9 and / or the magnetic positioning short circuit 10 arranged on the fallen object detection body are used to determine the distance of the instrument to be salvaged.

[0144] In the embodiment of the present disclosure and other possible embodiments, when the second detection mechanism is configured as Figure 5-7 When the measuring electrode ring 9 is shown, the detection signals collected by the multiple second detection mechanisms are configured as resistivity; and when the second detection mechanism is configured with a magnetic positioning short circuit 10, the detection signals collected by the second detection mechanism are configured as corresponding induced electromotive forces.

[0145] In an embodiment of the present disclosure, the method further includes: determining an effective distance for a salvage device to salvage the instrument to be salvaged according to the distance of the instrument to be salvaged (for example, the distance of the instrument to be salvaged exposed from mud and sand).

[0146] In the embodiments of the present disclosure and other possible embodiments, after completing the detection of the instrument to be salvaged in the well, it is necessary to salvage the instrument to be salvaged. At this time, in order to achieve effective salvage of the instrument to be salvaged, it is necessary to determine the position of the salvage device to grab or sleeve the instrument to be salvaged. Therefore, the effective distance for the salvage device to salvage the instrument to be salvaged can be determined based on the distance traversed by the instrument to be salvaged, that is, the distance from the head to the mud and sand corresponding to the grabbing or sleeve connection of the salvage device to the instrument to be salvaged.

[0147] In an embodiment of the present disclosure, the detection method further includes: if the instrument to be salvaged is not detected and an obstruction detection mechanism installed at one end of the object detection body detects an obstruction, it is determined that the instrument not to be salvaged is obstructed; when the instrument not to be salvaged is obstructed, a vibrator 13 arranged on or inside the object detection body is started; after the vibrator 13 vibrates for a preset time, the object detection body is continuously controlled to move downhole; during the process of continuing to control the object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected; if the instrument to be salvaged is detected, the multiple detection signals are used to determine whether the instrument to be salvaged is detected. A plurality of detection signals corresponding to a set direction determine the position of the instrument to be salvaged, and continue to control the fallen object detection body to move downward into the well; in the process of continuing to move downward into the well, the plurality of first detection mechanisms and the second detection mechanism arranged on the fallen object detection body are used to determine the distance of the instrument to be salvaged; otherwise, when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body continues to detect obstruction, the third detection mechanism installed on the inner or outer side of the fallen object detection body is driven to extend out of the fallen object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected.

[0148] In the embodiment of the present disclosure and other possible embodiments, the third detection mechanism may be configured as a measuring electrode 11 or a magnetic positioning mechanism; wherein the measuring electrode 11 or the magnetic positioning mechanism is a needle-shaped structure, such as a probe electrode 5 .

[0149] In an embodiment of the present disclosure, the method of determining whether the instrument to be salvaged is detected using the extended third detection mechanism includes: if the detection signal collected by the third detection mechanism changes to a set value, it is determined that the instrument to be salvaged is detected; otherwise, it is determined that the instrument to be salvaged is not detected.

[0150] In the embodiments of the present disclosure and other possible embodiments, when the third detection mechanism is configured as a measuring electrode, the detection signal collected by the third detection mechanism is configured as resistivity; and when the third detection mechanism can be configured with multiple magnetic positioning mechanisms (for example, a coil or a Hall element), the detection signal collected by the third detection mechanism is configured as a corresponding induced electromotive force.

[0151] For example, when the third detection mechanism is configured as a measuring electrode, the detection signal collected by the third detection mechanism is configured as resistivity, and when the measuring electrode detects the instrument to be salvaged, the resistivity corresponding to the third detection mechanism changes to a set value of O; or, when the third detection mechanism is configured as a magnetic positioning mechanism, the detection signal collected by the third detection mechanism is configured as an induced electromotive force, and when the magnetic positioning mechanism detects the instrument to be salvaged, the induced electromotive force corresponding to the magnetic positioning mechanism changes to a set value (the set value corresponding to the induced electromotive force).

[0152] In an embodiment of the present disclosure, the method of driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend the falling object detection body includes: controlling the action of the driving mechanism connected to the third detection mechanism, thereby driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend the falling object detection body.

[0153] For example, in Figure 5-7 In the embodiment, the driving mechanism connected to the third detection mechanism includes: a driving screw 2 arranged on the inner side or the outer side of the falling object detection body and a transmission screw 3 connected to the driving screw 2; the driving screw 2 is driven to move by the transmission screw 3, thereby driving the third detection mechanism connected to the driving screw 2 to extend out of the falling object detection body.

[0154] Further, in Figure 5-7 In the embodiment, the third detection mechanism and the driving mechanism connected to the third detection mechanism are arranged in the cavity 12 in the falling object detection body.

[0155] In the embodiment of the present disclosure, it also includes: after the extended third detection mechanism is used to determine the detection of the instrument to be salvaged, the extended third detection mechanism is used to determine the thickness of the obstruction above the instrument to be salvaged; according to the thickness of the obstruction (for example, mud and sand), the obstruction is eliminated. Wherein, the method of eliminating the obstruction according to the thickness of the obstruction includes: if the thickness of the obstruction is less than or equal to the set thickness, the obstruction is eliminated by using the obstruction impact scheme; otherwise, the obstruction is discharged from the well to the outside of the well by using the circulating sand removal scheme to eliminate the obstruction.

[0156] In an embodiment of the present disclosure, the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanisms and / or the detection signals collected by the third detection mechanisms are configured as resistivity. At the same time, the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanisms and / or the detection signals collected by the third detection mechanisms are configured as detection signals corresponding to the radial direction of the falling object detection body.

[0157] The execution subject of the downhole object detection method may be a downhole object detection device, for example, the downhole object detection method may be executed by a terminal device or a server or other processing device, wherein the terminal device may be a user equipment (UE), a mobile device, a user terminal, a terminal, a cellular phone, a cordless phone, a personal digital assistant (PDA), a handheld device, a computing device, a vehicle-mounted device, a wearable device, etc. In some possible implementations, the downhole object detection method may be implemented by a processor calling a computer-readable instruction stored in a memory.

[0158] In addition, in the embodiment of the present disclosure and other possible embodiments, the execution subject of the downhole object detection method may be Figure 5-7 Well logging instruments or include / applications Figure 5-7 A logging instrument is provided, and the logging instrument is used to complete the detection of fallen objects in the well.

[0159] Those skilled in the art will appreciate that, in the above method of specific implementation, the order in which the steps are written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of the steps should be determined by their functions and possible internal logic.

[0160] Figure 2 FIG. 2 is a block diagram of a downhole object detection device according to an embodiment of the present disclosure. Figure 2As shown, the downhole object detection device includes: an acquisition unit 101, which is used to acquire multiple detection signals corresponding to multiple set directions collected by multiple first detection mechanisms set at one end of the downhole object detection body when the downhole object detection body moves downhole; a detection determination unit 102, which is used to use the multiple detection signals to determine whether the instrument to be salvaged is detected; an orientation determination and control unit 103, which is used to determine the orientation of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continue to control the downhole object detection body to move downhole; a crossing distance determination unit 104, which is used to use the multiple first detection mechanisms and the second detection mechanism set on the downhole object detection body to determine the distance of the instrument to be salvaged during the continued movement downhole. It makes up for the shortcomings of the existing technology and provides sufficient supporting data for salvage engineers to solve the problem of not being able to detect the orientation of the instrument to be salvaged and the distance of the instrument to be salvaged.

[0161] In an embodiment of the present disclosure, the detection device further includes: a unit for determining that an instrument not to be salvaged encounters an obstruction; the unit for determining that an instrument not to be salvaged encounters an obstruction is used to determine that the instrument not to be salvaged encounters an obstruction if the instrument to be salvaged is not detected and an obstruction detection mechanism installed at one end of the object detection body detects an obstruction; a starting unit is used to start the vibrator 13 provided on or inside the object detection body when the instrument not to be salvaged encounters an obstruction; a control unit is used to continue to control the object detection body to move downhole after the vibrator 13 vibrates for a preset time; the detection determination unit is also used to continue to determine whether the instrument to be salvaged is detected by using the multiple detection signals during the process of continuing to control the object detection body to move downhole after the preset time; the orientation determination and control The control unit is used to determine the position of the instrument to be salvaged by using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continue to control the fallen object detection body to move underground; the crossing distance determination unit is used to determine the crossing distance of the instrument to be salvaged by using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body during the continued movement underground; otherwise, the control unit is also used to drive the third detection mechanism installed on the inner or outer side of the fallen object detection body to extend out of the fallen object detection body when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body continues to detect obstruction, and use the extended third detection mechanism to determine whether the instrument to be salvaged is detected.

[0162] In an embodiment of the present disclosure, the detection determination unit includes: a first comparison unit; the first comparison unit is used to determine that the instrument to be salvaged is detected if the detection signal collected by the third detection mechanism changes to a set value; otherwise, it is determined that the instrument to be salvaged is not detected.

[0163] In an embodiment of the present disclosure, it also includes: an obstacle thickness elimination unit; the obstacle thickness elimination unit is used to determine the thickness of the obstacle above the instrument to be salvaged by using the extended third detection mechanism after the instrument to be salvaged is detected by using the extended third detection mechanism; and eliminate the obstacle according to the thickness of the obstacle.

[0164] In an embodiment of the present disclosure, the obstacle thickness elimination unit includes: a scheme selection unit; the scheme selection scheme is used to use an obstacle impact scheme to eliminate the obstacle if the thickness corresponding to the obstacle is less than or equal to the set thickness; otherwise, use a circulating sand discharge scheme to discharge the obstacle from the well to the outside of the well to eliminate the obstacle.

[0165] In an embodiment of the present disclosure, the control unit includes: a first control unit and a second control unit; the first control unit is used to control the action of a driving mechanism connected to the third detection mechanism; and further, the second control unit is used to drive the third detection mechanism installed on the inside or outside of the falling object detection body to extend out of the falling object detection body.

[0166] In an embodiment of the present disclosure, the detection determination unit includes: a second comparison unit; the second comparison unit is used to detect the instrument to be salvaged if one or several detection signals among the multiple detection signals change to a set value; otherwise, the instrument to be salvaged is not detected.

[0167] In an embodiment of the present disclosure, the detection determination unit also includes: an obstruction detection unit; the second comparison unit is used to detect the instrument to be salvaged if one or several detection signals among the multiple detection signals change to a set value; and the obstruction detection unit is used to detect obstruction using an obstruction detection mechanism installed at one end of the falling object detection body, then detecting the instrument to be salvaged; otherwise, the instrument to be salvaged is not detected.

[0168] In an embodiment of the present disclosure, the orientation determination unit includes: a third comparison unit and a configuration unit; the third comparison unit is used to obtain the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body if one or several detection signals among the multiple detection signals corresponding to the multiple set directions change to a set value, and configure the position as the orientation of the instrument to be salvaged.

[0169] In an embodiment of the present disclosure, the orientation determination unit further includes: a fourth comparison unit; the fourth comparison unit is used for obtaining the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body if, except for the one or several detection signals that change to the set value, the change values ​​of other detection signals among the multiple detection signals corresponding to the multiple set directions are less than the set change values, and the configuration unit configures the position as the orientation of the instrument to be salvaged.

[0170] In an embodiment of the present disclosure, it further includes: a salvaging instrument effective distance determination unit; the salvaging instrument effective distance determination unit determines the effective distance for the salvage device to salvage the instrument to be salvaged according to the distance of the salvage device passing through the instrument to be salvaged.

[0171] In an embodiment of the present disclosure, it also includes: a detection signal configuration unit; the detection signal configuration unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism as resistivity.

[0172] In an embodiment of the present disclosure, it also includes: a detection signal direction setting unit; the detection signal direction setting unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanisms and / or the detection signals collected by the third detection mechanism as detection signals corresponding to the radial direction of the falling object detection body.

[0173] In an embodiment of the present disclosure, the crossing distance determination unit includes: a calculation unit; the calculation unit is used to calculate the physical distance between the plurality of first detection mechanism collections and the second detection mechanism on the falling object detection body.

[0174] In some embodiments, the functions or modules included in the device provided by the embodiments of the present disclosure can be used to execute the downhole fallen object detection method described in the above method embodiment. Its specific implementation can refer to the description of the above downhole fallen object detection method embodiment, and for the sake of brevity, it will not be repeated here.

[0175] The embodiment of the present disclosure also provides a computer-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by a processor, the above-mentioned method for detecting objects in a well is implemented. The computer-readable storage medium may be a non-volatile computer-readable storage medium.

[0176] The embodiment of the present disclosure also provides an electronic device, comprising: a processor; a memory for storing instructions executable by the processor; wherein the processor is configured to implement the above-mentioned method for detecting objects in a well. The electronic device can be provided as a terminal, a server, or other forms of equipment.

[0177] Figure 3 8 is a block diagram of an electronic device 800 according to an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, or the like.

[0178] Reference Figure 3 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0179] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0180] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0181] The power supply component 806 provides power to the various components of the electronic device 800. The power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the electronic device 800.

[0182] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0183] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0184] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: home button, volume button, start button, and lock button.

[0185] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0186] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0187] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0188] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 804 including computer program instructions, which can be executed by a processor 820 of an electronic device 800 to perform the above method.

[0189] Figure 4 1 is a block diagram of an electronic device 1900 according to an exemplary embodiment. For example, the electronic device 1900 may be provided as a server. Figure 4 , the electronic device 1900 includes a processing component 1922, which further includes one or more processors, and a memory resource represented by a memory 1932 for storing instructions executable by the processing component 1922, such as an application. The application stored in the memory 1932 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1922 is configured to execute instructions to perform the above method.

[0190] The electronic device 1900 may also include a power supply component 1926 configured to perform power management of the electronic device 1900, a wired or wireless network interface 1950 configured to connect the electronic device 1900 to a network, and an input / output (I / O) interface 1958. The electronic device 1900 may operate based on an operating system stored in the memory 1932, such as Windows Server™, Mac OS X™, Unix™, Linux™, FreeBSD™ or the like.

[0191] In an exemplary embodiment, a non-volatile computer-readable storage medium is also provided, such as a memory 1932 including computer program instructions, which can be executed by the processing component 1922 of the electronic device 1900 to perform the above method.

[0192] The present disclosure may be a system, a method and / or a computer program product. The computer program product may include a computer-readable storage medium carrying computer-readable program instructions for causing a processor to implement various aspects of the present disclosure.

[0193] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples of computer-readable storage media (a non-exhaustive list) include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disk read-only memory (CD-ROM), a digital versatile disk (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punch card or a raised structure in a groove on which instructions are stored, and any suitable combination of the foregoing. As used herein, a computer-readable storage medium is not to be interpreted as a transient signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., a light pulse through a fiber optic cable), or an electrical signal transmitted through a wire.

[0194] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to each computing / processing device, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network can include copper transmission cables, optical fiber transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0195] The computer program instructions for performing the operation of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. Computer-readable program instructions may be executed completely on a user's computer, partially on a user's computer, as an independent software package, partially on a user's computer, partially on a remote computer, or completely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., using an Internet service provider to connect via the Internet). In some embodiments, an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), may be customized by utilizing the state information of the computer-readable program instructions, and the electronic circuit may execute the computer-readable program instructions, thereby realizing various aspects of the present disclosure.

[0196] Various aspects of the present disclosure are described herein with reference to the flowcharts and / or block diagrams of the methods, devices (systems) and computer program products according to the embodiments of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram can be implemented by computer-readable program instructions.

[0197] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine, so that when these instructions are executed by the processor of the computer or other programmable data processing device, a device that implements the functions / actions specified in one or more boxes in the flowchart and / or block diagram is generated. These computer-readable program instructions can also be stored in a computer-readable storage medium, and these instructions cause the computer, programmable data processing device, and / or other equipment to work in a specific manner, so that the computer-readable medium storing the instructions includes a manufactured product, which includes instructions for implementing various aspects of the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0198] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device so that a series of operating steps are performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to implement the functions / actions specified in one or more boxes in the flowchart and / or block diagram.

[0199] The flow chart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to multiple embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a part of a module, program segment or instruction, and a part of the module, program segment or instruction includes one or more executable instructions for realizing the specified logical function. In some alternative implementations, the function marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two continuous square boxes can actually be executed substantially in parallel, and they can sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs the specified function or action, or can be implemented with a combination of special hardware and computer instructions.

[0200] In addition, the present disclosure proposes a well logging instrument, which applies the downhole fallen object detection method as described above; and / or, includes or applies the downhole fallen object detection device as described above; and / or, includes or applies the electronic device as described above; and / or, includes or applies the computer-readable storage medium as described above.

[0201] Figure 5 A half-section mechanical schematic diagram of a well logging instrument for downhole object detection according to an embodiment of the present disclosure is shown; Figure 6 A schematic diagram of the three-dimensional structure of a well logging instrument for downhole fallen object detection according to an embodiment of the present disclosure is shown (the third detection mechanism extends from the inside or outside of the fallen object detection body); Figure 7 FIG. 2 shows a schematic diagram of a well logging instrument for detecting objects in a well according to an embodiment of the present disclosure. Figure 5-7As shown, a plurality of first detection mechanisms are provided at one end of the fallen object detection body, and a second detection mechanism is provided on the fallen object detection body; wherein, when the fallen object detection body moves underground, a plurality of detection signals corresponding to a plurality of set directions collected by the plurality of first detection mechanisms are obtained; the plurality of detection signals are used to determine whether an instrument to be salvaged is detected; if the instrument to be salvaged is detected, the plurality of detection signals corresponding to the plurality of set directions are used to determine the position of the instrument to be salvaged, and the fallen object detection body is continued to be controlled to move underground; during the process of continuing to move underground, the plurality of first detection mechanisms and the second detection mechanism provided on the fallen object detection body are used to determine the distance across the instrument to be salvaged.

[0202] In an embodiment of the present disclosure, the multiple first detection mechanism acquisition configurations are configured as a measurement array electrode 11, and the measurement array electrode 11 includes: multiple measurement electrodes; the measurement electrodes are arranged on the outside of the falling object detection body according to multiple set directions, and are used to collect multiple detection signals corresponding to the multiple set directions.

[0203] In the embodiment of the present disclosure and other possible embodiments, the measuring array electrode 11 is configured as a plurality of array electrodes with a set spacing distance, which is used to measure the resistivity of the medium (one or more of the bottom layer, logging instruments to be salvaged, mud, water / oil, etc.) in the well or in multiple directions underground.

[0204] For example, when the measuring array electrode 11 passes through one side of the instrument to be salvaged or encounters the instrument to be salvaged, when one or several measuring electrodes on one side of the measuring array electrode 11 are on the side of the instrument to be salvaged, the resistivity of one measuring electrode changes to the set resistivity (for example, 0); since other measuring electrodes except the one or several measuring electrodes are also in contact with the well wall or the bottom layer, their corresponding resistivities hardly change.

[0205] In an embodiment of the present disclosure, the second detection mechanism is configured as a measuring electrode ring 9 and / or a magnetic positioning short circuit 10 arranged on the fallen object detection body; during the continued movement underground, the distance of the instrument to be salvaged is determined by using the multiple first detection mechanisms and the measuring electrode ring 9 and / or the magnetic positioning short circuit 10 arranged on the fallen object detection body.

[0206] In an embodiment of the present disclosure, a driving mechanism is provided on the inner side or the outer side of the fallen object detection body, and the driving mechanism is connected to the third detection mechanism; when the instrument to be salvaged is not detected and the obstruction detection mechanism 6 installed at one end of the fallen object detection body continues to detect obstruction, the third detection mechanism installed on the inner side or the outer side of the fallen object detection body is driven to extend out of the fallen object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected; wherein, the obstruction detection mechanism 6 is on the same side as the multiple first detection mechanisms.

[0207] In the embodiment of the present disclosure, the driving mechanism connected to the third detection mechanism includes: a driving screw 2 arranged on the inner side or the outer side of the falling object detection body and a transmission screw 3 connected to the driving screw 2;

[0208] The driving screw 2 is driven to move by the driving screw 3, thereby driving the third detection mechanism connected to the driving screw 2 to extend out of the falling object detection body.

[0209] In the embodiment of the present disclosure, the third detection mechanism and the driving mechanism connected to the third detection mechanism are arranged in the cavity 12 in the falling object detection body. The third detection mechanism is arranged as a probe electrode 5.

[0210] In the embodiment of the present disclosure, a vibrator 13 is further provided on or inside the fallen object detection body. When the obstruction detection mechanism 6 installed at one end of the fallen object detection body detects that the instrument not to be salvaged is obstructed, the vibrator 13 provided on or inside the fallen object detection body is activated. After the vibrator 13 vibrates for a preset time, the fallen object detection body continues to be controlled to move downhole; during the process of continuing to control the fallen object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected.

[0211] In the embodiment of the present disclosure and other possible embodiments, it also includes: a power supply electrode 7 and a metal short circuit; a sheath 1 is provided outside the metal short circuit, and the power supply electrode 7 is installed in a groove outside the sheath 1, and a cavity 12 is provided inside the sheath 1, and a driving screw 2 and a transmission screw 3 are provided inside the cavity 12, and the driving screw 2 is connected to the outside of the transmission screw 3, and the driving screw 2 is connected to the retractable probe electrode 5; wherein the power supply electrode 7 is a grounded metal object connected to a power source for supplying power to a medium (one or more of mud, water / oil, etc.) in a well or underground. wherein the sheath 1 can be a sheath made of glass fiber reinforced plastic.

[0212] In the embodiment of the present disclosure, the falling object detection body comprises: a sheath 1 and an insulating nipple (small diameter insulating nipple) connected to the sheath 1 and smaller than the size of the sheath 1. An insulating ring 8 is provided at the connection between the sheath 1 and the insulating nipple.

[0213] In the embodiment of the present disclosure, the insulating short section includes: an insulating shell 4 and the plurality of first detection mechanisms and / or the second detection mechanisms and / or the obstruction detection mechanism 6 arranged outside the insulating shell 4 .

[0214] In the embodiment of the present disclosure and other possible embodiments, when the magnetic positioning short circuit 10 disposed in the groove outside the insulating short section encounters a metal object (instrument to be salvaged) in the well or underground, the coil of the magnetic positioning short circuit 10 generates an electromotive force, indicating that the instrument to be salvaged has been passed through, so as to determine the distance of the instrument to be salvaged. Furthermore, according to the distance of the instrument to be salvaged, the effective length of the salvage device inserted into the instrument to be salvaged is determined.

[0215] In the embodiment of the present disclosure and other possible embodiments, the resistance detection mechanism 6 can be configured as a pressure touch sensor or a touch switch. When encountering resistance, the resistance detection mechanism 6 is activated. The measuring array electrode 11 can be used to determine whether the instrument to be salvaged encounters resistance or the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance); when the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance), the vibrator 13 vibrates for a preset time to flush away the mud and sand; after the preset time, the measuring array electrode 11 can be used to determine whether the instrument to be salvaged encounters resistance or the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance); when the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance), the vibrator 13 vibrates for a preset time to flush away the mud and sand; after the preset time, the measuring array electrode 11 can be used to determine whether the instrument to be salvaged encounters resistance or the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance); when the instrument not to be salvaged encounters resistance (for example, mud and sand encounters resistance), the vibrator 13 vibrates for a preset time to flush away the mud and sand. When the salvage instrument encounters an obstruction (for example, mud and sand encounter an obstruction), the transmission screw 3 is used to drive the retractable probe electrode 5 connected to the driving screw 2 to protrude from the cavity 12. When the retractable probe electrode 5 encounters a metal object (the instrument to be salvaged), the resistivity measured by the retractable probe electrode 5 changes to a set resistivity (for example, 0), thereby determining the thickness of the mud and sand; the mud and sand thickness is used to determine the mud and sand flushing scheme, and the flushing scheme includes: a mud circulation sand discharge scheme or a mud impact scheme. For example, if the thickness of the mud and sand is less than or equal to the set thickness, the mud impact scheme is adopted; otherwise, the mud impact scheme is adopted.

[0216] In the embodiment of the present disclosure and other possible embodiments, a plurality of first detection mechanisms are arranged at one end of the object detection body, and a plurality of detection signals corresponding to a plurality of set directions collected by the plurality of first detection mechanisms are used to determine whether the instrument to be salvaged is detected according to the plurality of detection signals; at the same time, a second detection mechanism is arranged on the object detection body, and the plurality of first detection mechanisms and the second detection mechanism arranged on the object detection body are used to determine the distance of the instrument to be salvaged. Thus, multi-layer measurement is formed to accurately reflect the operating status and surrounding environment of the proposed logging instrument.

[0217] In the embodiments of the present disclosure and other possible embodiments, an ingenious solution to the stuck condition is as follows: the proposed logging instrument connection cable is lowered into the well, and after the instrument reaches the fish top (the top of the instrument to be salvaged), the lower diameter of the proposed logging instrument is smaller (a small-diameter insulating short section), and a spatial dislocation is formed between the side of the instrument to be salvaged and the stuck instrument, which can easily verify the passability of the stuck instrument and provide an important reference for formulating plans for the salvage work.

[0218] In the embodiment of the present disclosure and other possible embodiments, the proposed obstruction detection mechanism 6 at the bottom of the logging instrument can obtain the obstruction information of the logging instrument in the first place, overcoming the problem of untimely response of the obstruction curve. It provides more information guarantee for lowering cables, and solves the problem of cable accumulation in the wellbore due to excessive cable placement, which leads to high risk of secondary accidents.

[0219] In the embodiments of the present disclosure and other possible embodiments, a vibrating probe structure (vibrator 13 + multiple first detection mechanisms) is equipped in the proposed logging instrument. Through the zero return characteristics of multiple first detection mechanisms (measuring array electrodes 11) when encountering metal, it can be determined whether it is sediment deposition or instrument obstruction. When mud and sand obstruction is found, the instrument will slowly probe in a micro-vibration state to avoid the problem of instrument deformation that may be caused by impact probe.

[0220] In the embodiment of the present disclosure and other possible embodiments, if there is still a section of mud and sand obstruction after vibration detection, the proposed logging instrument is also equipped with a telescopic probe structure (third detection mechanism). Through the coordinated action of the driving switch and the lead screw, the third detection mechanism (probe electrode 5) inside the proposed logging instrument can be extended by 40 cm, further increasing the detection depth.

[0221] In the embodiments of the present disclosure and other possible embodiments, the technical indicators of the proposed logging instrument are achieved: 1. The instrument recognition accuracy is 100%; 2. The feedback accuracy when encountering resistance is 100%; 3. The downward distance reaches 40 centimeters; 4. The distance between the electrode recording point and the bottom is zero.

[0222] In summary, the present invention proposes a technical solution that effectively demonstrates high accuracy and versatility. It can not only accurately measure the operating status and environmental information of the instrument, but also easily overcome the difficulties of encountering jams and provide all-round security. At the same time, the intelligent discrimination function and flexible extension design make the detection depth more guaranteed, and users enjoy more comprehensive and reliable data guidance. It solves the technical problems existing in traditional fishing methods, improves the performance of the instrument, and brings a safer, more accurate and efficient fishing tool to the industry.

[0223] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A method for detecting fallen objects in a well, characterized in that: include: Acquire a plurality of detection signals corresponding to a plurality of set directions collected by a plurality of first detection mechanisms disposed at one end of the object detection body when the object detection body moves downhole; Determining whether the instrument to be salvaged is detected using the multiple detection signals; If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well; During the process of continuing to move underground, the plurality of first detection mechanisms and the second detection mechanism arranged on the fallen object detection body are used to determine the distance of the instrument to be salvaged.

2. The detection method according to claim 1, characterized in that: Also includes: If the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the object detection body detects an obstruction, it is determined that the instrument not to be salvaged is obstructed; When the non-salvageable instrument encounters an obstruction, a vibrator arranged on or inside the fallen object detection body is activated; After the vibrator vibrates for a preset time, the object detection body is continuously controlled to move downhole; during the process of continuing to control the object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected; If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well; During the process of continuing to move downhole, the distance of the instrument to be salvaged is determined by using the plurality of first detection mechanisms and the second detection mechanism provided on the object detection body; Otherwise, when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the object detection body continues to detect obstruction, a third detection mechanism installed on the inner or outer side of the object detection body is driven to extend out of the object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected; and / or, The method of using the extended third detection mechanism to determine whether the instrument to be salvaged is detected comprises: If the detection signal collected by the third detection mechanism changes to a set value, it is determined that the instrument to be salvaged is detected; otherwise, it is determined that the instrument to be salvaged is not detected; and / or, The method further includes: after the instrument to be salvaged is detected by the extended third detection mechanism, the thickness of the obstruction above the instrument to be salvaged is determined by the extended third detection mechanism; the obstruction is eliminated according to the thickness of the obstruction; and / or, The method for eliminating the obstruction according to the thickness corresponding to the obstruction includes: If the thickness of the obstacle is less than or equal to the set thickness, the obstacle is eliminated by using the obstacle impact solution; Otherwise, using a circulating sand removal scheme to discharge the obstruction from the well to the outside of the well to eliminate the obstruction; and / or, The method of driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body comprises: The driving mechanism connected to the third detection mechanism is controlled to move, thereby driving the third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body.

3. The detection method according to any one of claims 1 to 2, characterized in that: include: The method of using the multiple detection signals to determine whether the instrument to be salvaged is detected comprises: If one or more of the multiple detection signals changes to a set value, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected; and / or, The method of using the multiple detection signals to determine whether the instrument to be salvaged is detected also includes: If one or more of the plurality of detection signals changes to a set value and an obstruction is detected by an obstruction detection mechanism installed at one end of the falling object detection body, the instrument to be salvaged is detected; otherwise, the instrument to be salvaged is not detected; and / or, The method of determining the position of the instrument to be salvaged by using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected includes: If one or more of the detection signals corresponding to the multiple set directions changes to a set value, the position of the first detection mechanism corresponding to the one or more detection signals in the object detection body is obtained, and the position is configured as the orientation of the instrument to be salvaged; and / or, If the instrument to be salvaged is detected, the method of determining the position of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions also includes: If, except for the one or several detection signals that change to the set value, the change values ​​of other detection signals among the multiple detection signals corresponding to the multiple set directions are less than the set change value, the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body is obtained, and the position is configured as the orientation of the instrument to be salvaged; and / or, It also includes: determining an effective distance for the salvage device to salvage the instrument to be salvaged according to the distance of the salvage device passing through the instrument to be salvaged; and / or, The plurality of detection signals collected by the plurality of first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism are configured as resistivity; and / or, The multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism are configured as detection signals corresponding to the radial direction of the falling object detection body; and / or, The method of determining the distance across the instrument to be salvaged using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body includes: calculating the physical distance between the multiple first detection mechanisms and the second detection mechanism on the fallen object detection body.

4. A downhole object detection device, characterized in that: include: An acquisition unit, used for acquiring a plurality of detection signals corresponding to a plurality of set directions collected by a plurality of first detection mechanisms arranged at one end of the object detection body when the object detection body moves downhole; a detection determination unit, configured to determine whether an instrument to be salvaged is detected using the plurality of detection signals; A position determination and control unit, for determining the position of the instrument to be salvaged by using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continuing to control the object detection body to move downhole; The crossing distance determination unit is used to determine the crossing distance of the instrument to be salvaged by using the multiple first detection mechanisms and the second detection mechanism arranged on the fallen object detection body during the process of continuing to move underground.

5. The detection device according to claim 4, characterized in that: Also includes: Unit for determining obstruction of instruments not to be salvaged; The non-to-be-salvaged instrument encountering obstruction determination unit is used to determine that the non-to-be-salvaged instrument encounters obstruction if the to-be-salvaged instrument is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body detects obstruction; A starting unit, used for starting a vibrator provided on or inside the fallen object detection body when the non-to-be-salvaged instrument encounters an obstruction; A control unit, used for continuing to control the falling object detection body to move downhole after the vibrator vibrates for a preset time; The detection determination unit is further used to continue to control the falling object detection body to move downhole after the preset time, and to continue to determine whether the instrument to be salvaged is detected by using the multiple detection signals; The position determination and control unit is used to determine the position of the instrument to be salvaged using the multiple detection signals corresponding to the multiple set directions if the instrument to be salvaged is detected, and continue to control the object detection body to move downhole; The crossing distance determination unit is used to determine the crossing distance of the instrument to be salvaged by using the plurality of first detection mechanisms and the second detection mechanism provided on the fallen object detection body during the process of continuing to move downhole; Otherwise, the control unit is further used to drive a third detection mechanism installed on the inner side or the outer side of the fallen object detection body to extend out of the fallen object detection body when the instrument to be salvaged is not detected and the obstruction detection mechanism installed at one end of the fallen object detection body continues to detect obstruction, and use the extended third detection mechanism to determine whether the instrument to be salvaged is detected; and / or, The detection and determination unit comprises: a first comparison unit; The first comparison unit is used to determine that the instrument to be salvaged is detected if the detection signal collected by the third detection mechanism changes to a set value; otherwise, determine that the instrument to be salvaged is not detected; and / or, It also includes: a unit for eliminating the thickness of obstacles encountered; The obstacle thickness elimination unit is used to determine the thickness of the obstacle above the instrument to be salvaged by using the extended third detection mechanism after the instrument to be salvaged is detected by using the extended third detection mechanism; eliminate the obstacle according to the thickness of the obstacle; and / or, The obstacle thickness elimination unit includes: a scheme selection unit; The scheme selection scheme is used to eliminate the obstruction by using the obstruction impact scheme if the thickness corresponding to the obstruction is less than or equal to the set thickness; otherwise, the obstruction is discharged from the well to the outside by using the circulating sand removal scheme to eliminate the obstruction; and / or, The control unit comprises: a first control unit and a second control unit; The first control unit is used to control the action of a driving mechanism connected to the third detection mechanism; Furthermore, the second control unit is used to drive a third detection mechanism installed on the inner side or the outer side of the falling object detection body to extend out of the falling object detection body.

6. The detection device according to any one of claims 4 to 5, characterized in that: The detection and determination unit comprises: a second comparison unit; The second comparison unit is used to detect the instrument to be salvaged if one or more of the multiple detection signals changes to a set value; otherwise, the instrument to be salvaged is not detected; and / or, The detection and determination unit further includes: an obstruction detection unit; The second comparison unit is used to detect the instrument to be salvaged if one or more of the multiple detection signals changes to a set value; and the obstruction detection unit is used to detect obstruction using an obstruction detection mechanism installed at one end of the falling object detection body, and then detect the instrument to be salvaged; otherwise, the instrument to be salvaged is not detected; and / or, The orientation determination unit comprises: a third comparison unit and a configuration unit; The third comparison unit is used for, if one or several detection signals corresponding to the multiple detection signals corresponding to the multiple set directions change to a set value, the configuration unit obtains the position of the first detection mechanism corresponding to the one or several detection signals in the object detection body, and configures the position as the orientation of the instrument to be salvaged; and / or, The position determination unit further includes: a fourth comparison unit; The fourth comparison unit is used for, if, except for the one or several detection signals that change to the set value, the change values ​​of other detection signals among the multiple detection signals corresponding to the multiple set directions are less than the set change value, then the configuration unit obtains the position of the first detection mechanism corresponding to the one or several detection signals in the fallen object detection body, and configures the position as the orientation of the instrument to be salvaged; and / or, It also includes: a fishing instrument effective distance determination unit; The effective distance determination unit for salvaging the instrument determines the effective distance for the salvage device to salvage the instrument to be salvaged according to the distance of the instrument to be salvaged; and / or, It also includes: a detection signal configuration unit; The detection signal configuration unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism as resistivity; and / or, It also includes: a detection signal direction setting unit; The detection signal direction setting unit is used to configure the multiple detection signals collected by the multiple first detection mechanisms and / or the detection signals collected by the second detection mechanism and / or the detection signals collected by the third detection mechanism as detection signals corresponding to the radial direction of the falling object detection body; and / or, A crossing distance determination unit includes: a calculation unit; The calculation unit is used to calculate the physical distance between the plurality of first detection mechanisms and the second detection mechanism on the falling object detection body.

7. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to call the instructions stored in the memory to execute the underground object detection method described in any one of claims 1 to 3.

8. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method for detecting fallen objects in a well as described in any one of claims 1 to 3 is implemented.

9. A well logging instrument, characterized in that: Applying the method for detecting fallen objects in a well as described in any one of claims 1 to 3; and / or, including or applying the device for detecting fallen objects in a well as described in any one of claims 4 to 6; and / or, including or applying the electronic device as described in claim 7; and / or, including or applying the computer-readable storage medium as described in claim 8.

10. The well logging instrument according to claim 9, characterized in that: include: A plurality of first detection mechanisms are arranged at one end of the falling object detection body, and a second detection mechanism is arranged on the falling object detection body; wherein, when the object detection body moves downhole, a plurality of detection signals corresponding to a plurality of set directions collected by the plurality of first detection mechanisms are obtained; Determining whether the instrument to be salvaged is detected using the multiple detection signals; If the instrument to be salvaged is detected, the position of the instrument to be salvaged is determined using the multiple detection signals corresponding to the multiple set directions, and the object detection body is continuously controlled to move downward into the well; During the process of continuing to move downhole, the distance of the instrument to be salvaged is determined by using the plurality of first detection mechanisms and the second detection mechanism provided on the object detection body; and / or, The plurality of first detection mechanism acquisition configurations are measurement array electrodes (11), the measurement array electrodes (11) comprising: a plurality of measurement electrodes; the measurement electrodes are arranged on the outer side of the falling object detection body according to a plurality of set directions, and are used to collect a plurality of detection signals corresponding to the plurality of set directions; and / or, The second detection mechanism is configured to be a measuring electrode ring (9) and / or a magnetic positioning short circuit (10) provided on the falling object detection body; During the process of continuing to move downhole, the distance of the instrument to be salvaged is determined by using the plurality of first detection mechanisms and the measuring electrode ring (9) and / or the magnetic positioning short circuit (10) arranged on the object detection body; and / or, A driving mechanism is provided inside or outside the falling object detection body, and the driving mechanism is connected to the third detection mechanism; When the instrument to be salvaged is not detected and the obstruction detection mechanism (6) installed at one end of the object detection body continues to detect obstruction, a third detection mechanism installed on the inner side or the outer side of the object detection body is driven to extend out of the object detection body, and the extended third detection mechanism is used to determine whether the instrument to be salvaged is detected; wherein the obstruction detection mechanism (6) is on the same side as the plurality of first detection mechanisms; and / or, The driving mechanism connected to the third detection mechanism comprises: a driving screw (2) arranged on the inner side or the outer side of the falling object detection body and a transmission screw (3) connected to the driving screw (2); The driving screw (2) is driven to move by the driving screw (3), thereby driving a third detection mechanism connected to the driving screw (2) to extend out of the falling object detection body; and / or, The third detection mechanism and the driving mechanism connected to the third detection mechanism are arranged in a cavity (12) in the falling object detection body; and / or, The third detection mechanism is configured as a probe electrode (5); and / or, A vibrator (13) is also provided on or inside the fallen object detection body. When an obstruction detection mechanism (6) installed at one end of the fallen object detection body detects that the non-to-be-salvaged instrument encounters an obstruction, the vibrator (13) provided on or inside the fallen object detection body is activated. After the vibrator (13) vibrates for a preset time, the object detection body is continuously controlled to move downhole; during the process of continuing to control the object detection body to move downhole after the preset time, the multiple detection signals are used to continue to determine whether the instrument to be salvaged is detected; and / or, The falling object detection body comprises: a sheath (1) and an insulating short section connected to the sheath (1) and smaller than the size of the sheath (1); and / or, An insulating ring (8) is provided at the connection between the sheath (1) and the insulating short section; and / or, The insulating short section comprises: an insulating shell (4) and the plurality of first detection mechanisms and / or the second detection mechanisms and / or the obstruction detection mechanisms (6) arranged outside the insulating shell (4).

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