Drilling track locator

Abstract

The invention provides a drilling track positioning instrument, and relates to the technical field of geological drilling. Comprising a shell, and a track detection device is arranged in the shell; an upper protective cover; each first rolling assembly comprises a first support and a first rolling body installed on the first support. And the stretching and retracting device is configured to drive the upper protective shell to be folded inwards or unfolded outwards. Due to the shell and the traction rope, the track of a drill hole can be accurately measured under the condition that a drill rod is not extracted, then underground track accurate measurement and specific depth accurate positioning can be carried out, and the actual gradient and depth of a specific node of the drill hole can be accurately calculated. The upper protective cover enables the drilling track positioning instrument and the drill rod to have certain coaxiality, and the detection accuracy is improved. The first rolling body reduces the downward moving resistance of the drilling track positioning instrument, and the upward moving resistance of the drilling track positioning instrument can be reduced through folding of the upper protection cover in the ascending process.

Description

Technical Field

[0001] The invention relates to the technical field of geological drilling, and in particular to a drilling trajectory locator. Background Art

[0002] During the drilling process of geological boreholes, in addition to the main ore body and the final hole, the hole depth error verification should be carried out. The hole depth verification should be carried out every 100m of the straight hole or every 50m of the inclined hole. Therefore, a geological borehole needs to be verified for many times during the drilling process. The traditional hole depth verification method is to verify the hole depth at a specific point. After all the underground drill rods are pulled out, the actual length of each single drill rod pulled out from the underground is measured one by one with a tape measure. After the corresponding cumulative calculation, the verification hole depth value of the corresponding node of the borehole is obtained. Since the value measured by the tape measure is manually observed, it is easy to have human errors. At the same time, due to the quality of the tape measure and the deformation of the long-term use, it is also easy to cause the systematic error of the observed value, which leads to the inaccuracy of the verified hole depth data. Some existing schemes are to directly set a detection device at the end of the drill rod. This detection device is extended into the ground with the drill rod. Although it can detect in real time, it is not suitable for maintenance when the detection device is damaged, and the detection function is lost. If the detection is to be continued, the drill rod must be pulled out, and the hole depth verification cannot be carried out during the drilling process, which is not conducive to the rotation of the hole. Summary of the invention

[0003] In view of the above problems, the present invention is proposed to provide a drilling trajectory locator that overcomes the above problems or at least partially solves the above problems, and can verify the hole depth without raising the drill rod.

[0004] Specifically, the present invention provides a drilling trajectory locator, which comprises: A housing, wherein a track detection device is disposed in the housing; A pulling rope, the pulling rope is connected to the housing, and an electrical connection line is arranged inside the pulling rope, and the electrical connection line is connected to the track detection device; An upper protective cover, the upper protective cover comprises a plurality of upper protective shells, the plurality of upper protective shells are arranged on the outer side of the shell along the circumference of the shell, the lower end of each upper protective shell is rotatably connected with the shell through an upper rotating shaft; a first upper sprocket is arranged on the upper rotating shaft; after the upper protective cover is folded, the upper ends of the plurality of upper protective shells form upward pointed tips; each of the upper protective shells is provided with a first through hole; the upper rotating shaft is fixedly connected with the shell; A plurality of first rolling assemblies, each of the first rolling assemblies comprising a first bracket and a first rolling body mounted on the first bracket; the first bracket is rotatably mounted at the first through hole through a first rotating shaft, and the first rotating shaft is fixedly connected to the first bracket in the upper protective cover; a second upper sprocket is arranged on the first rotating shaft, and a chain is arranged between the first upper sprocket and the second upper sprocket, so that when the upper protective shell is expanded outward, the second upper sprocket rotates so that the first rolling body extends out of the upper protective cover and contacts the inner peripheral wall of the drill rod; and An extension and contraction device is configured to drive the upper protective shell to collapse inward or expand outward.

[0005] Optionally, the drilling trajectory locator further includes: A lower protective cover, the lower protective cover comprises a plurality of lower protective shells, the plurality of lower protective shells are arranged on the outer side of the shell along the circumference of the shell, the upper end of each lower protective shell is rotatably connected with the shell through a lower rotating shaft; a first lower sprocket is arranged on the lower rotating shaft; after the lower protective cover is folded, the lower ends of the plurality of lower protective shells form downwardly pointed tips; each of the lower protective shells is provided with a second through hole; the lower rotating shaft is fixedly connected with the shell; A plurality of second rolling assemblies, each of the second rolling assemblies comprises a second bracket and a second rolling body mounted on the second bracket; the second bracket is rotatably mounted at the second through hole through a second rotating shaft and is located in the lower protective cover, and the second rotating shaft is fixedly connected to the second bracket; a second lower sprocket is arranged on the second rotating shaft, and a chain is arranged between the first lower sprocket and the second lower sprocket, so that when the lower protective shell is expanded outward, the second lower sprocket rotates so that the second rolling body extends out of the lower protective cover and contacts the inner peripheral wall of the drill pipe; The extension and contraction device is also configured to drive the lower protective shell to collapse inwards or expand outwards.

[0006] Optionally, the extension and contraction device comprises: A plurality of upper permanent magnets, each of the upper permanent magnets being disposed on each of the upper protective shells; an upper electromagnet, the upper electromagnet being disposed in the shell and configured to cooperate with the plurality of upper permanent magnets so as to move the upper permanent magnets away from or close to the upper protective shell; and the upper electromagnet being configured to determine the magnitude of the magnetic force provided according to the position of the shell so as to change the pressure of the first rolling body acting on the inner peripheral wall of the drill rod; A plurality of lower permanent magnets, each of the lower permanent magnets being disposed on each of the lower protective shells; A lower electromagnet is disposed in the shell and is configured to cooperate with the plurality of lower permanent magnets to move the lower permanent magnets away from or close to the lower protective shell; and the lower electromagnet is configured to determine the magnitude of the magnetic force provided according to the position of the shell to change the pressure of the second rolling body acting on the inner circumferential wall of the drill rod.

[0007] Optionally, the first rolling assembly and the second rolling assembly both further include a magnetic structural member; A plurality of magnets are arranged at positions to be detected on the inner peripheral wall of the drill rod, and are configured to be attracted to the magnetic structural member after the housing is lowered to a corresponding position.

[0008] Optionally, the first rolling body and the second rolling body are both provided with magnetic structural parts, and the first rolling body and the second rolling body are both rolling balls; An annular groove is provided at the position to be detected on the inner circumferential wall of the drill rod, and the plurality of magnets are arranged in cooperation with the annular groove so that the first rolling body and the second rolling body enter the corresponding annular groove to attract the magnetic structural member.

[0009] Optionally, each upper protective shell corresponds to a plurality of first rolling bodies, and the plurality of first rolling bodies are sequentially arranged in the up-down direction; Each of the lower protective shells corresponds to a plurality of the second rolling bodies, and the plurality of the second rolling bodies are arranged in sequence along the up-down direction; After the upper protective shell is unfolded outward, it is in a state of arching outward and downward; after the lower protective shell is unfolded outward, it is in a state of arching outward and upward.

[0010] Optionally, the trajectory detection device includes a gyroscope, an altimeter, an accelerometer and a speed measuring instrument, and a timer; the gyroscope is used to detect the forward direction of the drilling trajectory locator, the altimeter is used to detect the height of the drilling trajectory locator, the accelerometer and the speed measuring instrument are used to detect the forward speed and acceleration of the drilling trajectory locator, and the timer is used to record time, so as to determine the running trajectory of the drilling trajectory locator according to the forward speed and acceleration, the height, the forward direction and the time, and determine the depth of the drilling and the slope of the drilling according to the running trajectory.

[0011] Optionally, the shell is connected to a counterweight chamber and a valve connected to the counterweight chamber, the counterweight chamber is configured to be filled with liquid; the valve is configured to open before the drilling trajectory locator rises to allow the liquid in the counterweight chamber to flow out of the drilling trajectory locator.

[0012] Optionally, the counterweight chamber is detachably connected to the shell, and the counterweight chamber is arranged on the outside of the shell.

[0013] Optionally, the upper protective cover is detachably mounted on the shell via an upper bracket, and the lower protective cover is detachably mounted on the shell via a lower bracket.

[0014] In the drilling trajectory locator of the present invention, due to the housing and the pulling rope, the trajectory of the borehole can be accurately measured without extracting the drill rod, and then the downhole trajectory can be accurately measured and the specific depth can be accurately positioned, and the actual inclination and depth of the specific node of the borehole can be accurately calculated. Due to the upper protective cover, the drilling trajectory locator and the drill rod have a certain coaxiality, which improves the detection accuracy. The use of the first rolling body can reduce the resistance of the drilling trajectory locator to move downward, and when rising, the retraction of the upper protective cover can reduce the resistance of the drilling trajectory locator to move upward. At the same time, the first rolling body will also be retracted into the upper protective cover to protect the first rolling body and prevent the first rolling assembly from contacting the liquid in the drill rod to increase the resistance of the drilling trajectory locator to move upward.

[0015] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 is a schematic structural diagram of a drilling trajectory locator according to an embodiment of the present invention; Figure 2 is a schematic structural diagram of a drilling trajectory locator according to an embodiment of the present invention from another perspective; Figure 3 is a schematic structural diagram of a drilling trajectory locator in use according to an embodiment of the present invention; Figure 4 is a schematic internal structure diagram of a drilling trajectory locator according to an embodiment of the present invention; Figure 5 is a schematic partial structural diagram of an upper protective cover in a drilling trajectory locator according to an embodiment of the present invention; Figure 6 yes Figure 5 A schematic enlarged view of the middle A; Figure 7 yes Figure 5 A schematic enlarged view of point B in the middle; Figure 8 yes Figure 4 Schematic enlarged view of point C in the middle; Fig. 9 yes Figure 5 A schematic structural diagram of the first rolling assembly in the upper protective cover shown; Fig.10 is a schematic structural diagram of a drill rod according to an embodiment of the present invention; Fig.11 is a schematic partial structural diagram of a drilling trajectory locator according to another embodiment of the present invention; Fig.12 is a schematic structural diagram of a drilling trajectory locator according to another embodiment of the present invention; Fig.13 It is a schematic structural diagram of a positioning device in a drilling trajectory locator according to an embodiment of the present invention.

[0017] in: 11. Shell; 12. Pull rope; 13. Drill rod; 14. Annular groove; 15. Magnet; 16. Mounting ring; 17. Positioning device; 20. Upper protective cover; 21. Upper protective shell; 22. Upper rotating shaft; 23. First through hole; 30. Lower protective cover; 40. First rolling assembly; 41. First bracket; 42. First rolling body; 43. First rotating shaft; 44. Chain; 51. Gyroscope; 52. Altimeter; 53. Acceleration and speed measuring instrument; 61. Upper permanent magnet; 62. Upper electromagnet; 63. Lower electromagnet; 71. Rack; 72. Counterweight cavity; 80. Positioning column; 81. Insertion part; 82. First stopper; 83. Second stopper; 84. Shaft; 91. Block; 92. First spring; 93. Second spring; 94. Disassembly ring. DETAILED DESCRIPTION

[0018] Refer to the following Figures 1 to 13 To describe the drilling trajectory locator of the embodiment of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features, that is, include one or more of the features. In the description of the present invention, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0019] Unless otherwise clearly defined and limited, the terms "set", "install", "connect", "connect", "fix", "couple" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical 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, unless otherwise clearly defined. A person skilled in the art should be able to understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0020] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of this embodiment, the first feature being "above", "above", and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature being "below", "below", or "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0022] Figure 1 is a schematic structural diagram of a drilling trajectory locator according to an embodiment of the present invention, such as Figure 1 As shown, and refer to Figures 2 to 12 The embodiment of the present invention provides a drilling trajectory locator, which includes a housing 11, a pulling rope 12, an upper protective cover 20, a plurality of first rolling assemblies 40 and an extension and contraction device.

[0023] A track detection device is provided in the housing 11, through which the current position of the housing 11 can be detected, that is, the position of the housing 11 in the drill rod 13 relative to the ground can be detected, that is, the position of the housing 11 in the borehole relative to the ground can be detected, that is, the depth of the borehole can be detected. At the same time, the track detection device can also detect the slope of the initial borehole.

[0024] The pulling rope 12 is connected to the housing 11, and an electrical connection line is provided inside the pulling rope 12, and the electrical connection line is connected to the trajectory detection device. The pulling rope is used to place the drilling trajectory locator in the borehole, and can also be directly placed in the drill rod 13 when the drill rod 13 is not taken out of the borehole, so that the drilling depth or the drilling inclination can be detected without taking out the drill rod 13. The other end of the pulling rope can be handheld, or connected to a winding device. The winding device is used to drive the drilling trajectory locator to move in the borehole or the drill rod 13.

[0025] The upper protective cover 20 includes a plurality of upper protective shells 21, which are arranged on the outer side of the shell 11 along the circumference of the shell 11. The lower end of each upper protective shell 21 is rotatably connected to the shell 11 through an upper rotating shaft 22; a first upper sprocket is arranged on the upper rotating shaft 22; after the upper protective cover 20 is folded, the upper ends of the plurality of upper protective shells 21 form upwardly pointed tips; a first through hole 23 is arranged on each upper protective shell 21; and the upper rotating shaft 22 is fixedly connected to the shell 11. The upper protective cover 20 is arranged to facilitate the lowering of the drilling trajectory locator in the drill rod 13 for detection, and ensure the stability of the movement. When the drilling trajectory locator rises, the upper protective cover 20 is pointed, which reduces the rising resistance of the drilling trajectory locator and protects the drilling trajectory locator.

[0026] Each first rolling assembly 40 includes a first bracket 41 and a first rolling body 42 mounted on the first bracket 41; the first bracket 41 is rotatably mounted at the first through hole 23 via a first rotating shaft 43, and the first rotating shaft 43 is fixedly connected to the first bracket 41 in the upper protective cover 20. A second upper sprocket is arranged on the first rotating shaft 43, and a chain 44 is arranged between the first upper sprocket and the second upper sprocket, so that when the upper protective shell 21 is expanded outward, the second upper sprocket rotates so that the first rolling body 42 extends out of the upper protective cover 20 and contacts the inner peripheral wall of the drill rod 13. The extension and contraction device is configured to drive the upper protective shell 21 to retract inward or expand outward.

[0027] When the drilling trajectory locator of the embodiment of the present invention is working, the drilling trajectory locator is placed in the drill rod 13, and the extension and contraction device is started to unfold the upper protective cover 20. During the unfolding of the upper protective cover 20, the first upper sprocket wheel causes the second upper sprocket wheel to rotate relative to the upper protective shell 21 through the chain 44, driving the first rolling assembly 40 to extend out of the upper protective shell 21 and contact the inner wall of the drill rod 13. Then the pulling rope 12 is released, and the drilling trajectory locator moves downward under the action of gravity. During the downward movement, the trajectory detection device can perform detection.

[0028] In this embodiment, due to the presence of the housing 11 and the pulling rope 12, the trajectory of the borehole can be accurately measured without extracting the drill rod 13, thereby enabling accurate measurement of the downhole trajectory and accurate positioning of a specific depth, and accurately calculating the actual inclination and depth of a specific node of the borehole. The deployment of the upper protective cover 20 allows the drilling trajectory locator to have a certain degree of coaxiality with the drill rod 13, thereby improving the detection accuracy. The use of the first rolling body 42 can reduce the resistance of the drilling trajectory locator to move downward, and when rising, the retraction of the upper protective cover 20 can reduce the resistance of the drilling trajectory locator to move upward. At the same time, the first rolling body 42 will also be retracted into the upper protective cover 20 to protect the first rolling body 42 and prevent the first rolling assembly 40 from contacting the liquid in the drill rod 13 to increase the resistance of the drilling trajectory locator to move upward.

[0029] In some embodiments of the present invention, Figure 8 and Fig. 9 As shown, in order to further improve the coaxiality between the drilling trajectory locator and the drill rod 13, there are multiple first rolling bodies 42 on each upper protective shell 21, and multiple first rolling bodies 42 are arranged in sequence along the up and down direction. All the first rolling bodies 42 can define a contact cylindrical surface, not just a contact ring. Even if the mass distribution of the drilling trajectory locator is uneven and the center of gravity is not on the axis of the drill rod 13, the coaxiality of the drilling trajectory locator and the drill rod 13 can be guaranteed, which is conducive to the detection of the trajectory detection device and the accuracy of the detection data. In particular, when detecting oblique drilling, the drilling trajectory locator is prevented from moving unsteadily downward to ensure the accuracy of the detection.

[0030] In some embodiments of the present invention, the drilling trajectory locator further includes a lower protective cover 30 and a plurality of second rolling assemblies. The lower protective cover 30 includes a plurality of lower protective shells, which are arranged on the outer side of the shell 11 along the circumference of the shell 11. The upper end of each lower protective shell is rotatably connected to the shell 11 through a lower rotating shaft. A first lower sprocket is arranged on the lower rotating shaft. After the lower protective cover 30 is folded, the lower ends of the plurality of lower protective shells form a downwardly pointed tip. A second through hole is arranged on each lower protective shell. The lower rotating shaft is fixedly connected to the shell 11. Each second rolling assembly includes a second bracket and a second rolling body mounted on the second bracket; the second bracket is rotatably mounted at the second through hole through a second rotating shaft and is located in the lower protective cover 30, and the second rotating shaft is fixedly connected to the second bracket; a second lower sprocket is arranged on the second rotating shaft, and a chain 44 is arranged between the first lower sprocket and the second lower sprocket, so that when the lower protective cover is expanded outward, the second lower sprocket rotates so that the second rolling body extends out of the lower protective cover 30 and contacts the inner peripheral wall of the drill rod 13. The extension and contraction device is also configured to drive the lower protective shell to be retracted inwardly or expanded outwardly. The structures of the lower protective cover 30 and the second rolling assembly are respectively the same as the structures of the upper protective cover 20 and the first rolling assembly.

[0031] The provision of the lower protective cover 30 is conducive to the upward movement of the drilling trajectory locator. In some scenarios, the lower protective cover 30 and the upper protective cover 20 can be deployed at the same time to further ensure the stability of the movement of the drilling trajectory locator in the drill rod 13, such as when the drilling trajectory locator moves in an inclined borehole. In particular, when the drilling trajectory locator needs to stay at a certain position in the drill rod 13 for a period of time, the lower protective cover 30 and the upper protective cover 20 can be deployed at the same time to ensure the stability of the drilling trajectory locator at the stay position, thereby enabling better detection at this position. In some embodiments of the present invention, when the drilling trajectory locator moves quickly to a preset position, the lower protective cover 30 is opened in advance to slow down the downward movement of the drilling trajectory locator, so that the drilling trajectory locator can stop moving downward smoothly.

[0032] In some embodiments of the present invention, Figure 1 and Figure 2 As shown, the upper protective shell 21 is arched outward and downward after being expanded outward, and the resistance generated during descent is relatively small, which facilitates descent. The lower protective shell is arched outward and upward after being expanded outward, so that the liquid such as water in the drill rod 13 can provide support force, play a role in deceleration and positioning, and the resistance generated during ascent is also relatively small, which facilitates ascent.

[0033] In some embodiments of the present invention, in order to further improve the coaxiality between the drilling trajectory locator and the drill rod 13, there are multiple second rolling bodies on each upper protective shell 21, and the multiple second rolling bodies are arranged in sequence along the up and down directions. All the second rolling bodies can define a contact cylindrical surface, rather than just a contact ring. Even if the mass distribution of the drilling trajectory locator is uneven and the center of gravity is not on the axis of the drill rod 13, the coaxiality of the drilling trajectory locator and the drill rod 13 can be guaranteed, which is beneficial for the trajectory detection device to perform detection and ensure the accuracy of the detection data. Especially for oblique drilling, it is prevented that the drilling trajectory locator moves upward unsteadily, causing the drilling trajectory locator to collide with the drill rod 13, damaging the trajectory detection device in the drilling trajectory locator, etc., which is beneficial to protect the equipment and increase the service life of the equipment.

[0034] In some embodiments of the present invention, the trajectory detection device includes a gyroscope 51, an altimeter 52, an acceleration and speed measuring instrument 53, and a timer. The gyroscope 51 is used to detect the forward direction of the drilling trajectory locator, the altimeter 52 is used to detect the height of the drilling trajectory locator, the acceleration and speed measuring instrument 53 is used to detect the forward speed and acceleration of the drilling trajectory locator, and the timer is used to record the time. The running trajectory of the drilling trajectory locator can be determined according to the forward speed and acceleration, height, forward direction and time, and the depth of the borehole and the slope of the borehole can be determined according to the running trajectory. The upper protective cover 20 and the lower protective cover 30 can prevent the drilling trajectory locator itself from shaking in the borehole, thereby ensuring the accuracy of the measurement. In some alternative embodiments of the present invention, the trajectory detection device can also adopt an existing trajectory detection device.

[0035] In some embodiments of the present invention, a first wireless transmission device is also provided in the housing 11, and the first wireless transmission device is used to transmit detection data to the outside. In the embodiment of the present invention, the detection data is transmitted to the outside simultaneously through the first wireless transmission device and the electrical connection line, and the signal is transmitted through multiple channels to ensure that the user can obtain the detection data. The drilling trajectory locator also includes a controller, and the controller is connected to the trajectory detection device signal through the first wireless transmission device or the electrical connection line. A second wireless transmission device is also provided on the controller to connect the signal with the remote device. The controller can process and analyze the detection data in real time and calculate the trajectory, inclination and depth of the drilling. The controller can also be connected to a display device. The remote device can be a terminal, and the terminal is provided with an app, etc., which can input control information, display detection data, display the trajectory, inclination and depth of the drilling, etc., to improve automation and convenience.

[0036] In some embodiments of the present invention, the extension and contraction device includes a plurality of upper permanent magnets 61 , an upper electromagnet 62 , a plurality of lower permanent magnets, and a lower electromagnet 63 .

[0037] Each upper permanent magnet 61 is arranged on each upper protective shell 21. The upper electromagnet 62 is arranged in the shell 11, and is configured to cooperate with the plurality of upper permanent magnets 61 so that the upper permanent magnets 61 are away from or close to the upper protective shell 21; and the upper electromagnet 62 is configured to determine the magnitude of the magnetic force provided according to the position of the shell 11, so as to change the pressure of the first rolling body 42 acting on the inner peripheral wall of the drill rod 13. For example, the upper electromagnet 62 is arranged horizontally, and there are two of them, and the upper protective shell 21 is four, and each upper electromagnet 62 cooperates with the upper permanent magnets 61 on the two upper protective shells 21 arranged oppositely, and adopts the principle that the same poles repel each other and the opposite poles attract each other. When it is necessary to unfold, the upper electromagnet 62 is energized in the forward current direction, and when it is necessary to retract, the upper electromagnet 62 is energized in the reverse current direction. The electromagnet technical solution is adopted, so that the extension and contraction device and the upper protective shell 21 are not in contact, that is, they are not rigidly connected, and the extension and contraction device is protected in the housing 11. When the upper protective shell 21 encounters an obstacle and needs to be retracted, the upper protective shell 21 has a retracting space, which is conducive to protecting the device. At the same time, the action of the upper protective shell 21 will be fed back to the upper electromagnet 62, and the upper electromagnet 62 will generate a corresponding signal, so that the obstacles here are detected.

[0038] By setting the upper electromagnet 62 and changing the magnitude of the magnetic force provided by the upper electromagnet 62, it is possible to adapt to drill rods 13 of different sizes. For example, when the drill rod 13 is relatively thick, the upper electromagnet 62 can provide a larger magnetic force; when the drill rod 13 is relatively thin, the upper electromagnet 62 can provide a smaller magnetic force. For the same drill rod 13, when the drilling trajectory locator moves to different positions, a larger magnetic force can be provided as required, so that the pressure between the first rolling body 42 and the inner wall of the drill rod 13 becomes larger, providing a larger resistance, and slowing down the movement speed of the drilling trajectory locator. When the drilling trajectory locator needs to move quickly, a smaller magnetic force can be provided to ensure coaxiality. The use of electromagnets and permanent magnets can significantly simplify the structure, reduce the number of transmission components compared to pure mechanical connections, and facilitate control.

[0039] Similarly, each lower permanent magnet is disposed on each lower protective shell. The lower electromagnet 63 is disposed in the housing 11 and is configured to cooperate with the plurality of lower permanent magnets to move the lower permanent magnets away from or close to the lower protective shell; and the lower electromagnet 63 is configured to determine the magnitude of the magnetic force provided according to the position of the housing 11 to change the pressure of the second rolling body acting on the inner peripheral wall of the drill rod 13.

[0040] In some embodiments of the present invention, Fig.11As shown, a linkage device is provided between each upper rotating shaft 22 and the corresponding lower rotating shaft, so that when the upper protective cover 20 is in a fully extended state, the lower protective cover 30 is in a retracted state, and when the lower protective cover 30 is in a fully extended state, the upper protective cover 20 is in a retracted state. In the initial position, both the upper protective cover 20 and the lower protective cover 30 are in a partially extended state. In this embodiment, the upper protective cover 20 and the lower protective cover 30 cannot be in a fully extended state synchronously. Moreover, in this embodiment, only the lower permanent magnet and the lower electromagnet 63 are required, or only the upper permanent magnet 61 and the upper electromagnet 62 are required, or one upper electromagnet 62 is provided, one lower electromagnet 63 is provided, and a pair of upper permanent magnets 61 and a pair of lower permanent magnets are provided. Of course, two upper electromagnets 62 are provided, two lower electromagnets 63 are provided, two pairs of upper permanent magnets 61 and two pairs of lower permanent magnets are provided. Such a setting can further simplify the structure, and the control is simple, reduce the power consumption, and can be beneficial to the internal operation of the drill rod 13. The upper protective cover 20 and the lower protective cover 30 move in coordination and restrict each other, thereby improving operational stability and reliability.

[0041] For example, the linkage device may include an upper gear, a lower gear and a rack 71. The upper gear is fixedly connected to the upper protective shell 21 and is coaxial with the upper rotating shaft 22. The number of upper gears is equal to that of the upper protective shell 21. The lower gear is fixedly connected to the upper protective shell 21 and is coaxial with the upper rotating shaft 22. The number of lower gears is equal to that of the lower upper protective shell 21. The rack 71 is mounted on the housing 11 so as to be movable up and down, and is meshed with both the upper gear and the lower gear.

[0042] In some embodiments of the present invention, in order to adapt to drill rods 13 of different apertures, the rack 71 may include a first rack segment and a second rack segment, the first rack segment meshes with the upper gear, the second rack segment meshes with the lower gear, and the first rack segment is telescopically mounted on the second rack segment. When the aperture of the drill rod 13 is relatively large, the length of the rack 71 can be lengthened, that is, in the initial position, the angle at which the upper protective cover 20 and the lower protective cover 30 are both in a partially expanded state is relatively large. When the aperture of the drill rod 13 is relatively large, the length of the rack 71 can be shortened, that is, in the initial position, the angle at which the upper protective cover 20 and the lower protective cover 30 are both in a partially expanded state is relatively small. The length of the rack 71 can be adjusted according to different borehole sizes to ensure that one of the upper protective cover 20 and the lower protective cover 30 is just expanded and the other is just retracted.

[0043] In some embodiments of the present invention, the linkage device further includes a positioning device, which is configured to fix the position of the rack 71, that is, the rack 71 is fixedly connected to the housing 11. When the electromagnet fails and the drilling trajectory locator needs to be used for detection, the upper protective cover 20 can be manually placed in a fully extended state and the lower protective cover 30 can be placed in a retracted state through the positioning device; or the lower protective cover 30 can be placed in a fully extended state and the upper protective cover 20 can be placed in a retracted state; or both the upper protective cover 20 and the lower protective cover 30 can be placed in a partially extended state. Then the positioning device locks the rack 71 to the housing 11. Then the drilling trajectory locator is placed in the well for detection, thereby increasing the scope of use of the drilling trajectory locator.

[0044] For example, a power supply is provided in the housing 11. When the power supply is insufficient, in order to ensure the power supply of the trajectory detection device, the electromagnet may not be powered, and the positioning device may be used to unfold or fold the upper protective cover 20 and the lower protective cover 30.

[0045] In some embodiments of the present invention, the first rolling assembly 40 and the second rolling assembly also include a magnetic structure. Fig.10 As shown, a plurality of magnets 15 are provided at the positions to be detected on the inner peripheral wall of the drill rod 13, and are configured to engage with the magnetic structure after the housing 11 is lowered to the corresponding position. By arranging the magnets 15 to engage, it is possible to accurately detect specific positions, especially the positions of the joints of the two drill rods 13.

[0046] Preferably, if Fig.10 As shown, the first rolling body 42 and the second rolling body are both provided with magnetic structural parts, and the first rolling body 42 and the second rolling body are both rolling balls. An annular groove 14 is provided at the position to be detected on the inner circumferential wall of the drill rod 13, and a plurality of magnets are provided in cooperation with the annular groove 14 so that the first rolling body 42 and the second rolling body enter the corresponding annular groove 14 to attract the magnetic structural parts. The multiple positioning method is adopted to further improve the accuracy of special position detection. The setting of the rolling ball is also conducive to the rotation of the drilling trajectory locator in the borehole when encountering obstacles, etc., to ensure the smoothness of movement.

[0047] An annular groove 14 may be provided at the upper and lower ends of each drill rod 13. The annular groove 14 at the lower end of the upper drill rod 13 can be used for the ball on the upper protective cover 20 to enter, and the annular groove 14 at the upper end of the lower drill rod 13 is used for the ball on the lower protective cover 30 to enter, which is more conducive to accurate detection of the joint position of the drill rod 13.

[0048] In some embodiments of the present invention, Fig.12As shown, the housing 11 is connected with a counterweight chamber 72 and a valve connected to the counterweight chamber 72, and the counterweight chamber 72 is configured to be filled with a liquid with a relatively high density. The valve is configured to open before the drilling trajectory locator rises, so that the liquid in the counterweight chamber 72 flows out of the drilling trajectory locator, thereby reducing the weight during the rise. By providing the counterweight chamber 72, the power of the drilling trajectory locator during the descent can be increased, and the obstruction of the liquid, impurities, etc. in the drill rod 13 can be prevented so that the drilling trajectory locator cannot be lowered to work, and the effect is more obvious when drilling inclined holes.

[0049] In some preferred embodiments of the present invention, the counterweight chamber 72 is an accessory, the counterweight chamber 72 is detachably connected to the housing 11, and the counterweight chamber 72 is disposed on the outside of the housing 11. The counterweight chamber 72 is disposed at the lower end of the housing 11. In other embodiments of the present invention, the counterweight chamber 72 is disposed on the inside of the housing 11.

[0050] In some embodiments of the present invention, a mounting column is provided on the housing 11, and the counterweight cavity 72 is threadedly connected to the mounting column. The drilling trajectory locator also includes a detection accessory, which is an additional detection accessory installed on the mounting column. In other words, when the counterweight cavity is not needed, other detection accessories can be installed on the mounting column to improve the detection function of the drilling trajectory locator, so that the drilling trajectory locator can adapt to various situations.

[0051] In some embodiments of the present invention, when both the upper protective cover 20 and the lower protective cover 30 are to be opened, in order to reduce the resistance to downward movement, each lower protective shell includes a main shell part and a support rod. The main shell part is provided with a third through hole and a second through hole, and a receiving groove is provided on the outer surface of the main shell part; the main shell part is rotatably connected to the lower rotating shaft. The support rod is provided in the receiving groove, and the support rod is rotatably connected to the lower rotating shaft. The second rotating shaft is rotatably mounted on the support rod. Each lower permanent magnet is rotatably mounted on the support rod and passes through the third through hole. The lower permanent magnet clamps the main shell part between the lower permanent magnet and the support rod in the first position so that the main shell part and the support rod rotate synchronously, and the lower permanent magnet can pass through the third through hole in the second position. An elastic device is provided between the main shell part and the shell 11 to cause the main shell part to be retracted.

[0052] When the lower protective cover 30 needs to be opened for downward movement, the lower protective cover has resistance. In order to reduce the resistance of descent, the lower permanent magnet can be rotated to the second position before the drilling trajectory locator enters the drill rod 13. At this time, when the lower protective cover 30 is unfolded, only the support rod is unfolded, and the main shell part is not unfolded, thereby reducing resistance. When the main shell part needs to be unfolded, the lower permanent magnet can be rotated to the first position. The lower permanent magnet is installed on the support rod by manual rotation.

[0053] In some embodiments of the present invention, Figure 1 and Figure 2As shown, the upper protective cover 20 is detachably mounted on the housing 11 through an upper bracket, and the lower protective cover 30 is detachably mounted on the housing 11 through a lower bracket. By detachably setting, the upper protective cover 20 or the lower protective cover 30 can be installed as needed.

[0054] Further, the housing 11 is provided with external threads, the upper bracket and the lower bracket are both mounting rings 16, the upper rotating shaft 22 and the lower rotating shaft are both mounted on the corresponding mounting rings 16, and the mounting rings 16 are threadedly connected to the external threads on the housing 11. The housing 11 is also provided with positioning holes, and the mounting rings 16 are provided with positioning devices 17, and the positioning devices 17 include positioning columns, which are inserted into the positioning holes to prevent the mounting rings 16 from rotating relative to the housing 11 after installation, and the installation is not firm. The positioning device 17 and the positioning holes cooperate to position, so that the permanent magnets and the corresponding electromagnets correspond to each other, so as to attract or repel each other better.

[0055] like Fig.13 As shown, a through hole is provided on the mounting ring 16, and a block groove is provided on the peripheral wall of the through hole. The positioning device 17 includes a positioning column 80, a block 91, a first spring 92, a second spring 93 and a disassembly ring 94. The block 91 is telescopically arranged in the block groove, and the first spring 92 is arranged in the block groove and configured to cause the block 91 to extend into the through hole. The second spring 93 is arranged in the through hole and configured to cause the positioning column 80 to disengage from the positioning hole.

[0056] The positioning column 80 includes an insertion portion 81, a first stopper 82, a first connection portion, a second stopper 83, a second connection portion and a shaft body 84, which are coaxially arranged and sequentially connected. The first stopper 82 is a truncated cone structure, and the small end of the first stopper 82 is connected to the insertion portion 81, and the insertion portion 81 is used to insert into the positioning hole. The second stopper 83 is a truncated cone structure, and the small end of the second stopper 83 is connected to the first connection portion. The large end of the first stopper 82 cooperates with the block 91 to prevent the positioning column 80 from falling off from the mounting ring 16 after the positioning column 80 is separated from the positioning hole. The large end of the second stopper 83 cooperates with the block 91 to insert the positioning hole into the insertion portion 81 to prevent the positioning column 80 from falling off the positioning hole.

[0057] The disassembly ring 94 is sleeved on the second connection part and can slide along the second connection part. The disassembly ring 94 is in the shape of a truncated cone, and the large end of the disassembly ring 94 faces the second stopper 83, and the diameter of the large end of the disassembly ring 94 is larger than the diameter of the large end of the second stopper 83. The block 91 has an inclined surface and a stop surface. The inclined surface faces the shaft body 84, and the stop surface is opposite to the inclined surface and faces the positioning hole. The initial position block 91 is located between the first stopper 82 and the second stopper 83, and the positioning column 80 is located in the through hole.

[0058] When it is necessary to cooperate with the positioning hole, the shaft body 84 is pressed, and under the guidance of the inclined surface of the clamping block 91, the clamping block 91 enters between the second stopper 83 and the disassembly ring 94, and the clamping block 91 prevents the insertion part 81 from being disengaged from the positioning hole. When the insertion part 81 needs to be disengaged from the positioning hole, the shaft body 84 is pressed, and the clamping block 91 enters between the disassembly ring 94 and the shaft body 84, and the shaft body 84 is loosened. Under the action of the second spring 93, the clamping block 91 drives the disassembly ring 94 so that the disassembly ring 94 contacts the second stopper 83. Under the guidance of the inclined surface of the disassembly ring 94, the clamping block 91 moves over the disassembly ring 94 to the inclined surface of the second stopper 83, and then enters between the first stopper 82 and the second stopper 83, and contacts the first stopper 82, so that the positioning device 17 is disengaged from the positioning hole, and the positioning column 80 will not be disengaged from the mounting ring 16.

[0059] The drilling trajectory locator of the embodiment of the present invention can measure the hole depth and trajectory without extracting the drill rod 13, reducing the interference to the drilling operation. The gyroscope 51, the altimeter 52, and the acceleration and velocity measuring instrument 53 are used to cooperate with each other for detection, thereby improving the accuracy and reliability of the measurement, and realizing real-time transmission and processing of data, providing timely and accurate information support for the exploration operation. The sensor data is analyzed by an algorithm, and the trajectory, inclination and depth of the borehole are automatically calculated, thereby improving the intelligent level of the exploration operation. The setting of the housing 11, the upper protective cover 20, the lower protective cover 30, and the counterweight cavity 72 can make the drilling trajectory locator move smoothly along the borehole. The gyroscope 51, the altimeter 52, the acceleration and velocity measuring instrument 53 are all arranged in the housing 11, and will not be affected by the components such as gravel, water, and lubricant in the borehole, thereby protecting the safety of the trajectory detection device, ensuring the stability of the downward movement, and preventing the problem of device damage when entering and exiting the drill rod 13, and also particularly improving the accuracy of data detection.

[0060] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all these other variations or modifications.

Claims

1. A drilling trajectory locator, characterized in that: include: A housing, wherein a track detection device is disposed in the housing; A pulling rope, the pulling rope is connected to the housing, and an electrical connection line is arranged inside the pulling rope, and the electrical connection line is connected to the track detection device; An upper protective cover, the upper protective cover comprises a plurality of upper protective shells, the plurality of upper protective shells are arranged on the outer side of the shell along the circumference of the shell, the lower end of each upper protective shell is rotatably connected with the shell through an upper rotating shaft; a first upper sprocket is arranged on the upper rotating shaft; after the upper protective cover is folded, the upper ends of the plurality of upper protective shells form upward pointed tips; each of the upper protective shells is provided with a first through hole; the upper rotating shaft is fixedly connected with the shell; A plurality of first rolling assemblies, each of the first rolling assemblies comprises a first bracket and a first rolling body mounted on the first bracket; the first bracket is rotatably mounted at the first through hole through a first rotating shaft, and the first rotating shaft is fixedly connected to the first bracket in the upper protective cover; a second upper sprocket is arranged on the first rotating shaft, and a chain is arranged between the first upper sprocket and the second upper sprocket, so that when the upper protective shell is expanded outward, the second upper sprocket rotates so that the first rolling body extends out of the upper protective cover and contacts the inner peripheral wall of the drill rod; and An extension and contraction device is configured to drive the upper protective shell to collapse inward or expand outward.

2. The drilling trajectory locator according to claim 1, characterized in that: Also includes: A lower protective cover, the lower protective cover comprises a plurality of lower protective shells, the plurality of lower protective shells are arranged on the outer side of the shell along the circumference of the shell, the upper end of each lower protective shell is rotatably connected with the shell through a lower rotating shaft; a first lower sprocket is arranged on the lower rotating shaft; after the lower protective cover is folded, the lower ends of the plurality of lower protective shells form downwardly pointed tips; each of the lower protective shells is provided with a second through hole; the lower rotating shaft is fixedly connected with the shell; A plurality of second rolling assemblies, each of the second rolling assemblies comprises a second bracket and a second rolling body mounted on the second bracket; the second bracket is rotatably mounted at the second through hole through a second rotating shaft and is located in the lower protective cover, and the second rotating shaft is fixedly connected to the second bracket; a second lower sprocket is arranged on the second rotating shaft, and a chain is arranged between the first lower sprocket and the second lower sprocket, so that when the lower protective shell is expanded outward, the second lower sprocket rotates so that the second rolling body extends out of the lower protective cover and contacts the inner peripheral wall of the drill pipe; The extension and contraction device is also configured to drive the lower protective shell to collapse inwards or expand outwards.

3. The drilling trajectory locator according to claim 2, characterized in that: The stretching and contracting device comprises: A plurality of upper permanent magnets, each of the upper permanent magnets being disposed on each of the upper protective shells; an upper electromagnet, the upper electromagnet being disposed in the shell and configured to cooperate with the plurality of upper permanent magnets so as to move the upper permanent magnets away from or close to the upper protective shell; and the upper electromagnet being configured to determine the magnitude of the magnetic force provided according to the position of the shell so as to change the pressure of the first rolling body acting on the inner peripheral wall of the drill rod; A plurality of lower permanent magnets, each of the lower permanent magnets being disposed on each of the lower protective shells; A lower electromagnet is disposed in the shell and is configured to cooperate with the plurality of lower permanent magnets to move the lower permanent magnets away from or close to the lower protective shell; and the lower electromagnet is configured to determine the magnitude of the magnetic force provided according to the position of the shell to change the pressure of the second rolling body acting on the inner circumferential wall of the drill rod.

4. The drilling trajectory locator according to claim 3, characterized in that: The first rolling assembly and the second rolling assembly both further include a magnetic structural member; A plurality of magnets are arranged at positions to be detected on the inner peripheral wall of the drill rod, and are configured to be attracted to the magnetic structural member after the housing is lowered to a corresponding position.

5. The drilling trajectory locator according to claim 4, characterized in that: The first rolling body and the second rolling body are both provided with magnetic structural parts, and the first rolling body and the second rolling body are both rolling balls; An annular groove is provided at the position to be detected on the inner circumferential wall of the drill rod, and the plurality of magnets are arranged in cooperation with the annular groove so that the first rolling body and the second rolling body enter the corresponding annular groove to attract the magnetic structural member.

6. The drilling trajectory locator according to claim 3, characterized in that: Each of the upper protective shells corresponds to a plurality of the first rolling bodies, and the plurality of the first rolling bodies are arranged in sequence along the up-down direction; Each of the lower protective shells corresponds to a plurality of the second rolling bodies, and the plurality of the second rolling bodies are arranged in sequence along the up-down direction; After the upper protective shell is unfolded outward, it is in a state of arching outward and downward; After the lower protective shell is unfolded outward, it is in a state of arching outward and upward.

7. The drilling trajectory locator according to claim 1, characterized in that: The trajectory detection device includes a gyroscope, an altimeter, an acceleration and speed measuring instrument, and a timer; the gyroscope is used to detect the forward direction of the drilling trajectory locator, the altimeter is used to detect the height of the drilling trajectory locator, the acceleration and speed measuring instrument is used to detect the forward speed and acceleration of the drilling trajectory locator, and the timer is used to record time, so as to determine the running trajectory of the drilling trajectory locator according to the forward speed and acceleration, the height, the forward direction and the time, and determine the depth of the drilling and the slope of the drilling according to the running trajectory.

8. The drilling trajectory locator according to claim 1, characterized in that: The shell is connected with a counterweight chamber and a valve connected with the counterweight chamber, and the counterweight chamber is configured to be filled with liquid; the valve is configured to open before the drilling trajectory locator rises to allow the liquid in the counterweight chamber to flow out of the drilling trajectory locator.

9. The drilling trajectory locator according to claim 8, characterized in that: The counterweight chamber is detachably connected to the shell, and the counterweight chamber is arranged outside the shell.

10. The drilling trajectory locator according to claim 2, characterized in that: The upper protective cover is detachably mounted on the shell through an upper bracket, and the lower protective cover is detachably mounted on the shell through a lower bracket.

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