Integrated logging-while-drilling device

Abstract

The utility model relates to a while-drilling comprehensive well logging device which comprises a first well logging mechanism, a second well logging mechanism, a connecting assembly and a drill bit. The first logging mechanism comprises an inclination measuring module and a natural gamma logging module; the second logging mechanism comprises a micro-processing module, a coil assembly and an emission control module, the micro-processing module is connected with the inclinometry module, the natural gamma logging module, the coil assembly and the emission control module, and the coil assembly is connected with the emission control module; the connecting assembly comprises a first connector and a second connector, the two sides of the first connector are connected with the first well logging mechanism and the second well logging mechanism respectively, and one side of the second connector is connected with the second well logging mechanism; the drill bit is connected with the other side of the second connector and used for well drilling. According to the technical scheme, natural gamma logging and electromagnetic wave resistivity logging are integrated, natural gamma lithologic information and electromagnetic wave resistivity lithologic information can be collected at the same time at a time, the multifunctional while-drilling comprehensive logging device is achieved, and the multifunctional while-drilling comprehensive logging device has higher resolution and accuracy compared with lithologic information collected singly in multiple times.

Description

Technical Field

[0001] The utility model relates to the technical field of borehole logging while drilling, in particular to a comprehensive logging while drilling device. Background Art

[0002] Before the introduction of logging-while-drilling equipment, wireline logging was the primary method. During drilling, wireline logging often causes the drill bit to deviate from the borehole trajectory, resulting in wasted mining resources. Therefore, real-time monitoring and timely correction during the drilling process are crucial. However, wireline logging technology cannot address this issue. Using logging-while-drilling (LWD) instead of wireline logging can avoid problems such as wireline logging jamming and obstruction. Furthermore, it provides real-time information from each formation during drilling, enabling analysis of abnormal formation pressure and stress intervals and timely prediction of safety hazards. LWD not only reduces the waste of resources and resources during the drilling process, but also prevents drilling accidents.

[0003] However, existing logging while drilling generally uses electromagnetic wave resistivity logging or natural gamma logging, which has a single logging method and low accuracy. Utility Model Content

[0004] In view of the above problems, the present application provides a comprehensive logging while drilling device to solve the technical problems that the existing logging while drilling generally uses electromagnetic wave resistivity logging or natural gamma logging, which has a single logging method and low accuracy.

[0005] To achieve the above object, the inventors provide a comprehensive logging while drilling device, comprising:

[0006] A first logging mechanism, the first logging mechanism including an inclination logging module and a natural gamma logging module;

[0007] A second logging mechanism, comprising a microprocessor module, a coil assembly, and a transmission control module, wherein the microprocessor module is connected to the inclination module, the natural gamma ray logging module, the coil assembly, and the transmission control module, respectively, and the coil assembly is connected to the transmission control module;

[0008] A connecting assembly, the connecting assembly comprising a first connector and a second connector, wherein two sides of the first connector are respectively connected to the first logging mechanism and the second logging mechanism, and one side of the second connector is connected to the second logging mechanism;

[0009] A drill bit is connected to the other side of the second connector, and the drill bit is used for drilling a well.

[0010] Different from the existing technology, the technical solution of the present application is provided with a first logging mechanism and a second logging mechanism connected by a first connector. The first logging mechanism is provided with a natural gamma logging module, and the second logging mechanism is provided with a coil assembly. Therefore, by integrating natural gamma logging with electromagnetic wave resistivity logging, natural gamma lithologic information and electromagnetic wave resistivity lithologic information can be collected simultaneously at one time, realizing a multifunctional while-drilling integrated logging device with higher resolution and accuracy compared with the single collection of lithologic information in batches.

[0011] As an embodiment of the present invention, the first logging mechanism further includes a wireless communication module and an antenna. The microprocessing module is linked to the wireless communication module, and the wireless communication module is connected to the antenna.

[0012] In this way, signal transmission can be enhanced by providing an antenna, and combining the antenna with the wireless communication module can increase the communication distance of the wireless communication module, thereby increasing the transmission range of the logging data.

[0013] As an embodiment of the present invention, the first logging mechanism further includes a power supply module, which supplies power to the inclination measurement module, the natural gamma ray logging module, the wireless communication module, the microprocessor module and the emission control module.

[0014] In this way, by setting up the power supply module, power can be supplied to the entire while-drilling integrated logging device to ensure the operation of each module.

[0015] As an embodiment of the present invention, the first logging mechanism further includes a first probe tube, in which an inclination measurement module, a natural gamma logging module, a wireless communication module and a power supply module are installed, and the antenna is installed on a side of the first probe tube away from the first connector.

[0016] Thus, the first probe tube is made of non-magnetic metal material, and the special non-magnetic property allows the signal to pass through, thereby preventing the signal from being shielded.

[0017] As an embodiment of the present invention, the second logging mechanism further includes a second probe tube, in which a microprocessor module, a coil assembly and a transmission control module are installed.

[0018] Thus, the second probe tube is made of non-magnetic metal material. The special non-magnetic property allows the signal to pass through, thus preventing the signal from being shielded. The second probe tube can be made of Monel alloy non-magnetic metal material.

[0019] As an embodiment of the present invention, the coil assembly includes a first coil assembly and a second coil assembly. The first coil assembly is arranged between the microprocessor module and the transmission control module, and the second coil assembly is arranged between the transmission control module and the second connector.

[0020] In this way, providing two sets of coil assemblies facilitates the reception and transmission of electromagnetic wave energy, improves the transmission energy and the reception energy, and thus increases the detection depth.

[0021] As an embodiment of the present invention, the distance between the center point of the first coil assembly and the center point of the second coil assembly along the horizontal direction is 450 mm.

[0022] Thus, it is preferred to set the horizontal distance between the center point of the first coil assembly and the center point of the second coil assembly to be 450 mm to facilitate the transmission or reception of electromagnetic wave energy. The first coil assembly and the second coil assembly can serve as a transmitting coil or a receiving coil.

[0023] As an embodiment of the present invention, the first coil assembly includes two connected first coils, and the second coil assembly includes two connected second coils.

[0024] In this way, a coil assembly is provided including two coils, and the two coils cooperate with each other to improve the overall energy of electromagnetic waves transmitted or received.

[0025] As an embodiment of the present invention, the distance between the two first coils along the horizontal direction is 150 mm, and the distance between the two second coils along the horizontal direction is 150 mm.

[0026] Thus, it is preferred to set the distance between the coils in the horizontal direction to 150 mm to facilitate the emission or reception of electromagnetic wave energy.

[0027] As an embodiment of the present invention, the wire diameters of the first coil and the second coil are 0.5 mm, the diameter of the wound coil is 35 mm, and the number of turns is 210.

[0028] In this way, the coil is set to be an enameled wire with a wire diameter of 0.5 mm, the diameter of the wound coil is 35 mm, and the number of turns is 210 turns, which is convenient for installation and ensures the transmission or reception of electromagnetic wave signals.

[0029] The above-mentioned records related to the content of the utility model are only an overview of the technical solution of this application. In order to enable ordinary technicians in this field to understand the technical solution of this application more clearly, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purposes and other purposes, features and advantages of this application easier to understand, the following is an explanation in combination with the specific implementation methods and drawings of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of this application and other related contents, and are not to be considered as limiting this application.

[0031] In the drawings of the specification:

[0032] Figure 1 This is a schematic diagram of the structure of the integrated logging while drilling device and computer transmission according to one embodiment of the present application;

[0033] Figure 2 This is a schematic structural diagram of a comprehensive logging while drilling device according to one embodiment of the present application;

[0034] Figure 3 This is a schematic diagram of the principle of a comprehensive logging while drilling device according to one embodiment of the present application;

[0035] Figure 4 This is a structural diagram of the connection between the second logging mechanism and the connecting assembly according to one embodiment of the present application;

[0036] Figure 5 This is a schematic structural diagram of a coil assembly according to an embodiment of the present application.

[0037] The reference numerals in the above drawings are described as follows:

[0038] 100-integrated logging while drilling device; 200-computer; 1-first logging mechanism; 11-inclination measurement module; 12-natural gamma logging module; 13-wireless communication module; 14-antenna; 15-power supply module; 16-first probe; 2-second logging mechanism; 21-microprocessor module; 22-coil assembly; 221-first coil assembly; 2211-first coil; 222-second coil assembly; 2221-second coil; 23-transmission control module; 24-second probe; 3-connection assembly; 31-first connector; 32-second connector; 4-drill bit; X-horizontal direction. DETAILED DESCRIPTION

[0039] In order to explain in detail the possible application scenarios, technical principles, specific solutions that can be implemented, and the purpose and effects of this application, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of this application and are therefore only examples and are not intended to limit the scope of protection of this application.

[0040] References to "embodiments" herein mean that the specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the word "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or relevance to other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the various technical features mentioned in the embodiments can be combined in any manner to form a corresponding implementable technical solution.

[0041] Unless otherwise defined, the technical terms used herein have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms herein is only for describing specific embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe a logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and both A and B exist. In addition, the character " / " in this document generally indicates that the objects before and after are in a logical "or" relationship.

[0043] In this application, terms such as "first" and "second" are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual quantity, priority or sequence relationship between these entities or operations.

[0044] Without further limitations, in this application, the words "include", "comprise", "have" or other similar expressions used in the sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those defined elements, but also other elements not explicitly listed, or elements inherent to such process, method or product.

[0045] Consistent with the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceed" are understood to exclude the number itself; expressions such as "above," "below," and "within" are understood to include the number itself. Furthermore, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this manner, such as "multiple groups," "multiple times," etc., unless otherwise specifically defined.

[0046] In the description of the embodiments of the present application, the space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, it should not be understood as a limitation on the embodiments of the present application.

[0047] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms "installed", "connected", "connected", "fixed", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art of the present application, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0048] According to some embodiments of this application, please refer to Figures 1 to 5 This embodiment relates to a comprehensive logging while drilling device 100, including a first logging mechanism 1, a second logging mechanism 2, a connecting assembly 3 and a drill bit 4; the first logging mechanism 1 includes an inclination module 11 and a natural gamma ray logging module 12; the second logging mechanism 2 includes a microprocessor module 21, a coil assembly 22 and an emission control module 23, the microprocessor module 21 is respectively connected to the inclination module 11, the natural gamma ray logging module 12, the coil assembly 22 and the emission control module 23, and the coil assembly 22 is connected to the emission control module 23; the connecting assembly 3 includes a first connector 31 and a second connector 32, the two sides of the first connector 31 are respectively connected to the first logging mechanism 1 and the second logging mechanism 2, and one side of the second connector 32 is connected to the second logging mechanism 2; the drill bit 4 is connected to the other side of the second connector 32, and the drill bit 4 is used for drilling.

[0049] The inclination measurement module 11 is used to measure the drilling trajectory, and the natural gamma logging module 12 is used to measure gamma ray information and calculate the content ratio of radioactive substances in the measured medium, thereby analyzing the lithology of the formation.

[0050] During actual operation, the LWD device 100 is first connected to the computer 200 and parameters are set. After this, the device is installed on the drill pipe, and then the drill bit 4 is used to drill a hole. During the drilling process, logging is performed simultaneously. After the drilling and detection tasks are completed and the rod is withdrawn, the LWD device 100 is removed, and the logging data is transmitted to the computer 200 for subsequent analysis.

[0051] The technical solution of the present application is provided with a first logging mechanism 1 and a second logging mechanism 2 connected by a first connector 31. The first logging mechanism 1 is provided with a natural gamma logging module 12, and the second logging mechanism 2 is provided with a coil assembly 22. Therefore, by integrating natural gamma logging with electromagnetic wave resistivity logging, natural gamma ray lithologic information and electromagnetic wave resistivity lithologic information can be collected simultaneously at one time, thereby realizing a multifunctional while-drilling integrated logging device 100, which has higher resolution and accuracy than the single collection of lithologic information in batches.

[0052] According to some embodiments of the present application, optionally, Figure 2 As shown, the first logging mechanism 1 further includes a wireless communication module 13 and an antenna 14 . The microprocessor module 21 is linked to the wireless communication module 13 , and the wireless communication module 13 is connected to the antenna 14 .

[0053] Thus, by providing the antenna 14 , signal transmission can be enhanced. Coordinating the antenna 14 with the wireless communication module 13 can increase the communication distance of the wireless communication module 13 , thereby increasing the transmission range of the well logging data.

[0054] According to some embodiments of the present application, optionally, Figure 2 and Figure 3 As shown, the first logging mechanism 1 further includes a power supply module 15 , which supplies power to the inclination measurement module 11 , the natural gamma ray logging module 12 , the wireless communication module 13 , the microprocessor module 21 and the emission control module 23 .

[0055] In this way, by providing the power supply module 15 , power can be supplied to the entire LWD device 100 , thereby ensuring the operation of each module.

[0056] According to some embodiments of the present application, optionally, Figure 2 As shown, the first logging mechanism 1 further includes a first probe 16 , in which an inclination module 11 , a natural gamma logging module 12 , a wireless communication module 13 and a power supply module 15 are installed. The antenna 14 is installed on a side of the first probe 16 away from the first connector 31 .

[0057] Thus, the first probe 16 is made of non-magnetic metal material. The special non-magnetic property allows the signal to pass through, thus preventing the signal from being shielded. The first probe 16 can be made of Monel alloy non-magnetic metal material.

[0058] According to some embodiments of the present application, optionally, Figure 2 As shown, the second logging mechanism 2 further includes a second probe tube 24 , in which a micro-processing module 21 , a coil assembly 22 and a transmission control module 23 are installed.

[0059] Thus, the second probe 24 is made of non-magnetic metal material. The special non-magnetic property allows the signal to pass through, thus preventing the signal from being shielded. The second probe 24 can be made of Monel alloy non-magnetic metal material.

[0060] According to some embodiments of the present application, optionally, Figure 2 As shown, the coil assembly 22 includes a first coil assembly 221 and a second coil assembly 222 . The first coil assembly 221 is disposed between the micro-processing module 21 and the transmission control module 23 , and the second coil assembly 222 is disposed between the transmission control module 23 and the second connector 32 .

[0061] In this way, providing two sets of coil assemblies 22 facilitates the reception and transmission of electromagnetic wave energy, improves the transmission energy and the reception energy, and thus increases the detection depth.

[0062] According to some embodiments of the present application, optionally, Figure 4 and Figure 5 As shown, the distance between the center point of the first coil assembly 221 and the center point of the second coil assembly 222 along the horizontal direction X is 450 mm.

[0063] Thus, it is preferred to set the distance between the center point of the first coil assembly 221 and the center point of the second coil assembly 222 along the horizontal direction X to 450 mm to facilitate the transmission or reception of electromagnetic wave energy. The first coil assembly 221 and the second coil assembly 222 can serve as either a transmitting coil or a receiving coil. In actual use, when the first coil assembly 221 and the second coil assembly 222 are both receiving coils, the microprocessor module 21 controls the receiving coil to receive signals. When the first coil assembly 221 and the second coil assembly 222 are both transmitting coils, the microprocessor module 21 controls the transmitting coil to transmit signals through the transmission control module 23.

[0064] According to some embodiments of the present application, optionally, Figure 4 and Figure 5 As shown, the first coil assembly 221 includes two connected first coils 2211 , and the second coil assembly 222 includes two connected second coils 2221 .

[0065] Thus, a coil assembly 22 comprising two coils is provided. The two coils work together to increase the overall energy of electromagnetic wave transmission or reception. The two first coils 2211 and the two second coils 2221 can serve as both transmitting coils and receiving coils. This embodiment specifies a transmission and reception sequence: First, two first coils 2211 are set as transmitting coils, and two second coils 2221 are set as receiving coils. During operation, one first coil 2211 transmits for 2 seconds, while the two second coils 2221 receive simultaneously for 2 seconds. The remaining coils 2211 transmits for 2 seconds, while the two second coils 2221 receive simultaneously for 2 seconds. Next, the two first coils 2211 serve as receiving coils, while the two second coils 2221 serve as transmitting coils. One first coil 2211 transmits for 2 seconds, while the two second coils 2221 receive simultaneously for 2 seconds. The remaining coils 2211 transmits for 2 seconds, while the two second coils 2221 receive simultaneously for 2 seconds. The transmission and reception operations are now complete. The transmission frequency selected in this embodiment is 2 MHz. A dual-transmitting and dual-receiving antenna 14 configuration design is adopted to realize a compact compensated electromagnetic wave resistivity logging device, which complies with the antenna 14 reciprocity principle, that is, the transmitting system and the receiving system can be interchanged, thereby improving the anti-interference ability and reducing the cost.

[0066] According to some embodiments of the present application, optionally, Figure 4 and Figure 5 As shown, the distance between the two first coils 2211 along the horizontal direction X is 150 mm, and the distance between the two second coils 2221 along the horizontal direction X is 150 mm.

[0067] Thus, it is preferred to set the distance between the coils along the horizontal direction X to 150 mm to facilitate the transmission or reception of electromagnetic wave energy.

[0068] According to some embodiments of the present application, optionally, the wire diameter of the first coil 2211 and the second coil 2221 is 0.5 mm, the diameter of the wound coil is 35 mm, and the number of turns is 210.

[0069] In this way, the coil is set to be an enameled wire with a wire diameter of 0.5 mm, the diameter of the wound coil is 35 mm, and the number of turns is 210 turns, which is convenient for installation and ensures the transmission or reception of electromagnetic wave signals.

[0070] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of this application and to form different embodiments. For example, in the claims, any one of the claimed embodiments may be used in any combination.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A comprehensive logging while drilling device, characterized in that: include: a first logging mechanism, the first logging mechanism comprising an inclination logging module and a natural gamma logging module; a second logging mechanism, comprising a microprocessing module, a coil assembly, and a transmission control module, wherein the microprocessing module is respectively connected to the inclination measurement module, the natural gamma ray logging module, the coil assembly, and the transmission control module, and the coil assembly is connected to the transmission control module; a connecting assembly, the connecting assembly comprising a first connector and a second connector, the two sides of the first connector being connected to the first logging mechanism and the second logging mechanism respectively, and one side of the second connector being connected to the second logging mechanism; A drill bit is connected to the other side of the second connector and is used for drilling a well.

2. The integrated logging while drilling device according to claim 1, characterized in that: The first logging mechanism further includes a wireless communication module and an antenna. The microprocessing module is linked to the wireless communication module, and the wireless communication module is connected to the antenna.

3. The integrated logging while drilling device according to claim 2, characterized in that: The first logging mechanism further includes a power supply module, which supplies power to the inclination logging module, the natural gamma ray logging module, the wireless communication module, the microprocessor module, and the emission control module.

4. The integrated logging while drilling device according to claim 3, characterized in that: The first logging mechanism further includes a first probe tube, in which the inclination measurement module, the natural gamma ray logging module, the wireless communication module and the power supply module are installed. The antenna is installed on a side of the first probe tube away from the first connector.

5. The integrated logging while drilling device according to claim 1, characterized in that: The second logging mechanism further includes a second probe tube, in which the microprocessing module, the coil assembly, and the emission control module are installed.

6. The integrated logging while drilling device according to claim 1, characterized in that: The coil assembly includes a first coil assembly and a second coil assembly. The first coil assembly is disposed between the micro-processing module and the transmission control module, and the second coil assembly is disposed between the transmission control module and the second connector.

7. The integrated logging while drilling device according to claim 6, characterized in that: The horizontal distance between the center point of the first coil assembly and the center point of the second coil assembly is 450 mm.

8. The integrated logging while drilling device according to claim 6, characterized in that: The first coil assembly includes two connected first coils, and the second coil assembly includes two connected second coils.

9. The integrated logging while drilling device according to claim 8, characterized in that: The distance between the two first coils along the horizontal direction is 150 mm, and the distance between the two second coils along the horizontal direction is 150 mm.

10. The integrated logging while drilling device according to claim 8, characterized in that: The wire diameters of the first coil and the second coil are 0.5 mm, the diameter of the wound coils is 35 mm, and the number of turns is 210.

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