An automatic point measurement magnetic three-component logging device

Abstract

This invention belongs to the field of borehole magnetic three-component logging technology, specifically an automatic point-measurement borehole magnetic three-component logging device, including a measuring unit, a support unit, a control mechanism, a feeding and cleaning mechanism, and a discharging and cleaning mechanism. The measuring unit includes a connecting rod and a measuring instrument body. One end of the connecting rod is provided with a screw, and two adjacent connecting rods are connected by the screw. The measuring instrument body is installed at the bottom of one of the connecting rods. The outer wall of the connecting rod is provided with a groove, and a toothed plate is provided in the groove. The support unit includes a support base and a bearing seat, with the bearing seat fixedly installed on the upper end face of the support base. Through the above structural cooperation, the measuring instrument body can be kept as stable as possible during the insertion into the mine, and the shaking of the measuring instrument body can be prevented during the measurement process. The feeding distance of the connecting rod can be precisely controlled to achieve the purpose of point measurement. Compared with existing continuous measurement, it can effectively improve the measurement accuracy.

Description

Technical Field

[0001] This invention belongs to the field of borehole magnetic three-component logging technology, specifically an automatic point-measurement borehole magnetic three-component logging device. Background Technology

[0002] Three-component magnetic logging is a geophysical measurement technique used to detect underground geological structures and assess oil and gas resources. It obtains geological information by measuring three components of the underground magnetic field (usually the X, Y, and Z axes).

[0003] For example, patent CN210488007U discloses a device for acquiring a three-component gravity gradient field and a three-component magnetic gradient field, which relates to the field of geophysical exploration technology. The device includes: a first acquisition unit and a second acquisition unit spaced at a preset distance, each of which includes: a three-component gravity acquisition device, a three-component magnetic field acquisition device, and a three-component attitude acquisition device; and a three-component gravity gradient field and a three-component magnetic gradient field calculation unit, which obtains the downhole gravity vertical gradient component and / or the two horizontal gradient components of the downhole gravity horizontal gradient field, and the downhole magnetic vertical gradient component and / or the two horizontal gradient components of the downhole magnetic horizontal gradient field based on the three-component gravity data acquired by the three-component gravity acquisition device and the three-component magnetic field data acquired by the three-component magnetic field acquisition device.

[0004] Although the above technology can measure three-component gravity and three-component magnetic field horizontally or vertically in the well, in actual use, the staff found that the ground instrument vehicle pulls the whole device through the armored cable. During the measurement, due to the flexibility of the armored cable itself, it is easily affected by the external environment, which causes the measuring part to shake. The shaking of the measuring head will cause changes in the magnetic field, thereby introducing additional interference signals and affecting the accuracy of the measurement.

[0005] Meanwhile, current magnetic three-component logging instruments are all continuous measurements. The instrument is constantly moving during the journey, and data is measured when the instrument is at the measurement position, thus forming a continuous acquisition without stopping. Because the instrument is still moving during measurement, the measured data may not meet the accuracy requirements or the error of the remeasured data may not meet the standard requirements.

[0006] Therefore, the present invention provides an automatic spot-measuring in-well magnetic three-component logging device. Summary of the Invention

[0007] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: an automatic point-measurement well magnetic three-component logging device according to the present invention, comprising a measuring part, a support part, a control mechanism, a feeding and cleaning mechanism, and a discharging and cleaning mechanism.

[0009] The measuring unit includes a connecting rod and a measuring instrument body. One end of the connecting rod is provided with a screw, and two adjacent connecting rods are connected by the screw. The measuring instrument body is installed at the bottom of one of the connecting rods. The outer wall of the connecting rod is provided with a groove, and a toothed plate is provided in the groove.

[0010] The support includes a support base and a bearing seat. The bearing seat is fixedly installed on the upper end face of the support base, and the bottom of the support base has a first through hole for the connecting rod to pass through.

[0011] The control mechanism includes a rotating clamp and a transmission gear. The transmission gear is rotatably mounted on the support base and meshes with the toothed plate. The rotation of the transmission gear controls the raising and lowering of the connecting rod. The rotating clamp is rotatably mounted on the bearing seat and engages with the groove on the outer wall of the connecting rod. The rotation of the connecting rod controls the connection of the two connecting rods.

[0012] The feed cleaning mechanism is used to clean the screw outside the connecting rods when the two connecting rods are connected.

[0013] The material removal cleaning mechanism is used to clean the outer wall of the connecting rod when it is withdrawn.

[0014] The cleaning of the feeding and unloading cleaning mechanisms is controlled by the rotation direction of the transmission gears.

[0015] Preferably, a mounting plate is fixedly installed on the upper end of the support base, and a rotary motor for controlling the rotation of the rotating clamp is fixedly installed on the outer wall of the mounting plate.

[0016] A mounting base is fixedly installed on the upper surface of the support base, a mounting box is fixedly installed on the outer wall of the mounting base, and a control motor for controlling the rotation of the transmission gear is fixedly installed on the outer wall of the mounting box.

[0017] Preferably, the feeding and cleaning mechanism includes an installation cylinder, cleaning bristles, and a drain hole. The installation cylinder is rotatably positioned above the mounting base. An elastic membrane is provided inside the installation cylinder. The cleaning bristles are fixedly installed on the outer wall of the elastic membrane. A cavity is provided on the inner wall of the installation cylinder. The drain hole communicates with the cavity inside the installation cylinder and is inclined.

[0018] Preferably, an adapter ring is fixedly installed on the upper end face of the mounting base, a feed nozzle is provided at the bottom of the adapter ring, the bottom of the mounting cylinder is rotatably connected to the upper end face of the adapter ring through a sealed bearing, and the inner cavity of the mounting cylinder is connected to the inner cavity of the adapter ring.

[0019] The inner wall of the mounting cylinder is elastically fitted with a conical plug, and the inner wall of the mounting cylinder is provided with a second through hole that is adapted to the conical plug.

[0020] Preferably, the material return and cleaning mechanism includes a material return cylinder, an elastic ring, cleaning brush bristles, and a liquid inlet pipe.

[0021] The material return cylinder is fixedly installed at the bottom of the support base, the elastic ring is fixedly installed on the inner wall of the material return cylinder, and the outer wall of the elastic ring is provided with a third through hole for liquid discharge. The cleaning brush bristles are set on the outer wall of the elastic ring, and the liquid inlet pipe is fixedly installed at the bottom of the material return cylinder.

[0022] Preferably, an installation rod is fixedly installed on the outer wall of the mounting base, and an adapter cylinder is rotatably installed in the inner cavity of the installation rod. The other end of the adapter cylinder is connected to the output end of an external water source through a sealed bearing. A drain hole for draining liquid is opened on the outer wall of the adapter cylinder. A feed pipe and a discharge pipe are fixedly installed on the outer wall of the installation rod. The feed pipe is used to connect to the feed nozzle, and the discharge pipe is used to connect to the liquid inlet pipe.

[0023] Preferably, a drive shaft is fixedly installed at the center of the axial end of the drive gear, an actuating plate is fixedly installed on the radial outer wall of the drive shaft, and a transmission plate is fixedly installed on the outer wall of the adapter cylinder. Both the actuating plate and the transmission plate are made of elastic material.

[0024] Preferably, a transfer tube is fixedly installed at the bottom of the support base. One end of the transfer tube is connected to the discharge tube through a conduit, and the other end of the transfer tube is connected to the liquid inlet tube through a conduit. A control membrane is provided on the inner wall of the transfer tube, and the control membrane is made of elastic material.

[0025] Preferably, a piston cylinder is fixedly installed on the upper end face of the support base, a control piston is slidably installed in the inner cavity of the piston cylinder, the bottom of the piston cylinder is fixedly connected to the outer wall of the transfer tube, the piston cylinder and the inner cavity of the transfer tube are in communication with each other, and the piston cylinder is located directly above the control membrane.

[0026] Preferably, a support frame is fixedly installed on the inner wall of the piston cylinder, a guide rod is elastically installed on the inner wall of the support frame, the bottom of the guide rod is fixedly connected to the outer wall of the control piston, and a transmission cam for pressing the guide rod is fixedly installed on the outer wall of the transmission shaft.

[0027] The beneficial effects of this invention are as follows:

[0028] 1. This invention incorporates a connecting rod for connecting the measuring instrument body, along with a rotating clamp and a transmission gear. Rotating the transmission gear, through its engagement with a toothed plate on the outer wall of the connecting rod, controls the raising and lowering of the connecting rod, thereby controlling the raising and lowering of the measuring instrument body. Aligning the groove on the outer wall of the connecting rod with the rotating clamp, and rotating the upper connecting rod connects the two connecting rods. By using a rigid connecting rod to connect the measuring instrument body, the invention helps maintain the stability of the measuring instrument body during its insertion into the mine, preventing swaying during measurement and thus improving measurement stability.

[0029] 2. By fixing a worm gear at the output end of the control motor and rotating a worm wheel that meshes with the worm gear on the inner wall of the mounting box, the axial end of the worm wheel is fixedly connected to the center of the axial end of the transmission gear through a coupling shaft. The control motor controls the rotation of the transmission gear through the cooperation of the worm gear and the worm wheel, which can accurately control the feed distance of the connecting rod, thereby achieving the purpose of point measurement. Compared with the existing continuous measurement, it can effectively improve the measurement accuracy.

[0030] 3. This invention incorporates a material return cylinder, an elastic ring, and cleaning brush bristles. The elastic ring is fixedly installed on the inner wall of the material return cylinder, and its outer wall has a third through hole for liquid discharge. A transfer pipe is also included, with a control membrane made of elastic material on its inner wall. When the cleaning liquid passes through the inner cavity of the transfer pipe, the flow diameter of the inner cavity can be adjusted by squeezing the control membrane from the outside in. Adjusting the flow diameter of the inner cavity of the transfer pipe regulates the water flow rate. This, in turn, controls the elastic ring to vibrate when spraying water, causing the cleaning brush bristles to vibrate synchronously along the outer wall of the connecting rod. This improves the cleaning effect on the connecting rod when it is withdrawn, creating a mutually reinforcing effect. Attached Figure Description

[0031] The invention will now be further described with reference to the accompanying drawings.

[0032] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0033] Figure 2 This is a schematic diagram of the installation of the mounting base in this invention;

[0034] Figure 3 This is a schematic diagram of the installation of the transmission gear in this invention;

[0035] Figure 4 This is a schematic diagram of the installation of the control motor in this invention;

[0036] Figure 5 This is a schematic diagram of the installation of the mounting cylinder in this invention;

[0037] Figure 6 This is a schematic diagram of the internal structure of the mounting cylinder in this invention;

[0038] Figure 7 This is a schematic diagram of the installation of the ejector cylinder in this invention;

[0039] Figure 8 This is a schematic diagram of the internal structure of the ejector cylinder in this invention;

[0040] Figure 9 This is a schematic diagram of the piston cylinder installation in this invention;

[0041] Figure 10 This is a schematic diagram of the internal structure of the mounting rod in this invention;

[0042] Figure 11 This is a schematic diagram of the installation of the control piston in this invention;

[0043] Figure 12 This is a control framework diagram of the controller in this invention.

[0044] In the diagram: 1. Measuring instrument body; 2. Support base; 3. Mounting rod; 4. Bearing seat; 5. Rotating clamp; 6. Connecting rod; 7. Mounting plate; 8. Mounting seat; 9. Adapter cylinder; 10. Mounting cylinder; 11. Transmission gear; 12. Rotary motor; 13. Mounting box; 14. Guide rod; 15. Control motor; 16. Cleaning brush bristles; 17. Feed pipe; 18. Actuating plate; 19. Piston cylinder; 20. Transmission shaft; 21. Drain hole; 22. Conical plug; 23. Adapter ring; 24. Feed nozzle; 25. Adapter pipe; 26. Unloading cylinder; 27. Cleaning brush bristles; 28. Elastic ring; 29. ​​Inlet pipe; 30. Transmission cam; 31. Unloading pipe; 32. Transmission plate; 33. Control piston; 34. Bearing frame; 35. Control diaphragm. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0046] like Figures 1 to 11 As shown, the automatic spot-measuring in-well magnetic three-component logging device of the present invention includes a measuring unit, a support unit, a control mechanism, a feeding and cleaning mechanism, and a discharging and cleaning mechanism.

[0047] Among them, the three-component magnetic survey in the well is a magnetic survey method for measuring △X, △Y, and △Z in the well. After processing, △X, △Y, △Z, △H', and △T' can be obtained. In inclined holes, when accurate well inclination azimuth data can be obtained, parameters such as △H, △H / , △H1, △T, △T / / , and △T¹ can also be obtained.

[0048] Two-component magnetic surveying in wells is a magnetic surveying method for measuring ΔH' and ΔZ in wells. When accurate well inclination azimuth data can be obtained in inclined boreholes, parameters such as ΔH, ΔH', ΔH1, ΔT, ΔT', and ΔT1 can also be obtained.

[0049] The three-component magnetometer in the well should be tested annually. The test should be conducted on a calibration platform in a stable field area. The test method should comply with the provisions of Appendix A, and the instrument's rotational error should meet the instrument's technical specifications.

[0050] The magnetic susceptibility logging tool should be calibrated annually. The calibration should be performed on all calibration devices, and the calibration points should be evenly distributed on the calibration curve. The calibration range should exceed the magnetic susceptibility values ​​of the borehole rock and core in the work area.

[0051] The high-precision ΔT magnetometer in the well should be tested annually, and the test should be carried out within the standard magnetic field generated by the Holm coil.

[0052] Before using a new winch, the depth correction coefficient needs to be calibrated. When the winch has been used for more than one year, the depth error is greater than 0.1%, or the armored cable or photoelectric encoder is replaced, the depth correction coefficient needs to be recalibrated. For the correction method, please refer to the instructions of each instrument manufacturer.

[0053] After the instrument passes the testing and calibration, it should undergo performance testing, including quality checks on the instrument's stability and repeatability.

[0054] The stability of the three-component magnetometer in the well should be measured every three months, and the measurement time should be no less than 4 hours. The zero drift should not be greater than 100 nT.

[0055] The stability of the magnetic susceptibility logging tool should be measured every three months, with a measurement time of no less than 4 hours, and the zero drift should not exceed 200 × 10⁻⁶. 5 SI;

[0056] The stability of the high-precision ΔT magnetometer in the well should be measured every three months. The measurement should be carried out in a stable field area free from interference. The mean square error of the data measured in different directions and at different tilt angles after diurnal variation correction should be better than ±5 nT.

[0057] The insulation of instruments and equipment shall meet the following requirements:

[0058] The insulation resistance to ground of all instrument connection cables should be greater than 10 MΩ;

[0059] Under humid conditions, the insulation resistance between the cores of the underground cable to ground is greater than 2 MΩ.

[0060] The measuring unit includes a connecting rod 6 and a measuring instrument body 1. One end of the connecting rod 6 is provided with a screw, and two adjacent connecting rods 6 are connected by the screw. The bottom of the connecting rod 6 is provided with a threaded hole. The two connecting rods 6 are connected by aligning their first and last ends and then rotating them.

[0061] The measuring instrument body 1 is installed at the bottom of one of the connecting rods 6. The outer wall of the connecting rod 6 is provided with a groove, and a toothed plate is provided in the groove. The measuring instrument body 1 is a common downhole magnetic measuring instrument, including a downhole three-component magnetometer, a downhole two-component magnetometer, a downhole high-precision ΔT magnetometer, and a magnetic susceptibility logging instrument (which are well known in the art and will not be described in detail here). The measuring instrument body 1 is connected to the connecting rod 6, and then the connecting rod 6 is extended into the mine where the data is to be acquired. As the measuring instrument body 1 is inserted deeper, the connecting rod 6 is assembled, which facilitates the acquisition of data at different depths.

[0062] The support includes a support base 2 and a bearing seat 4. The bearing seat 4 is fixedly installed on the upper end face of the support base 2. The bottom of the support base 2 has a first through hole for the connecting rod 6 to pass through. During measurement, the support base 2 needs to be erected above the mine shaft to be measured to support the connecting rod 6 and the measuring instrument body 1.

[0063] The control mechanism includes a rotating clamp 5 and a transmission gear 11. The transmission gear 11 is rotatably mounted on the support base 2 and meshes with the toothed plate. The rotation of the transmission gear 11 controls the lifting and lowering of the connecting rod 6. The rotation of the transmission gear 11, through its engagement with the toothed plate on the outer wall of the connecting rod 6, controls the lifting and lowering of the connecting rod 6, thereby controlling the lifting and lowering of the measuring instrument body 1.

[0064] The rotating clamp 5 is rotatably mounted on the bearing seat 4. After engaging with the groove on the outer wall of the connecting rod 6, the two connecting rods 6 are connected by rotating the connecting rod 6. As the measuring instrument body 1 goes deeper, another connecting rod 6 needs to be added. At this time, the groove on the outer wall of the connecting rod 6 is aligned with the rotating clamp 5, and the connecting rod 6 is inserted until the threaded hole at the bottom of the upper connecting rod 6 is aligned with the screw at the top of the lower connecting rod 6. At this time, the upper connecting rod 6 is rotated to connect the two connecting rods 6. After the two connecting rods 6 are connected, the transmission gear 11 continues to rotate, controlling the measuring instrument body 1 to descend.

[0065] It should be noted that, in order to facilitate the smooth control of the transition between the two connecting rods 6 by the transmission gear 11, the distance between the two tooth plates after the two connecting rods 6 are connected needs to be equal to the tooth pitch of the outer wall of the tooth plate.

[0066] After the measurement is completed, the connecting rod 6 is raised by rotating the transmission gear 11 in the opposite direction until the uppermost connecting rod 6 is completely separated from the transmission gear 11. At this time, the rotating clamp 5 is rotated in the opposite direction to separate the uppermost connecting rod 6 from the lower connecting rod 6, thus removing the uppermost connecting rod 6. After removal, the connecting rod 6 is stored for future use.

[0067] Compared to CN210488007U, which describes a device for acquiring a three-component gravity gradient field and a three-component magnetic gradient field, the ground instrument vehicle pulls the entire device via an armored cable. A rigid connecting rod 6 is used to connect the measuring instrument body 1. This allows the measuring instrument body 1 to maintain its posture as stable as possible during its insertion into the mine, while also preventing it from shaking during measurement, thereby improving measurement stability.

[0068] The feeding cleaning mechanism is used to clean the screw outside the connecting rod 6 when the two connecting rods 6 are connected, thereby preventing sand and gravel from falling into the threads. During the rotation connection, the crushing of sand and gravel will cause the measuring instrument body 1 to shake, thus maintaining the stability of the measuring instrument body 1 during the connection of the two connecting rods 6.

[0069] The material removal and cleaning mechanism is used to clean the outer wall of the connecting rod 6 when it is withdrawn and to clean the outer wall of the connecting rod 6 when it is retracted, so as to prevent mud and sand from sticking to the outer wall of the connecting rod 6.

[0070] The cleaning of the feeding cleaning mechanism and the unloading cleaning mechanism is controlled by the rotation direction of the transmission gear 11. The rotation direction of the transmission gear 11 is synchronized with the lifting and lowering of the connecting rod 6. By associating the rotation direction of the transmission gear 11 with the cleaning of the feeding cleaning mechanism and the unloading cleaning mechanism, the required cleaning parts can be automatically cleaned according to the usage scenario during use.

[0071] In a preferred embodiment of the present invention, a mounting plate 7 is fixedly installed on the upper end of the bearing seat 4. A rotary motor 12 for controlling the rotation of the rotating clamping plate 5 is fixedly installed on the outer wall of the mounting plate 7. A worm gear is fixedly installed at the output end of the rotary motor 12. A worm wheel that meshes with the worm gear is rotatably installed on the inner wall of the mounting plate 7. A first through hole for the connecting rod 6 to pass through is opened in the worm wheel. The rotating clamping plate 5 is fixedly installed on the inner wall of the worm wheel. The rotary motor 12 controls the rotation of the worm wheel through the worm gear, thereby driving the rotating clamping plate 5 to rotate.

[0072] A mounting base 8 is fixedly installed on the upper end face of the support base 2. A mounting box 13 is fixedly installed on the outer wall of the mounting base 8. A control motor 15 for controlling the rotation of the transmission gear 11 is fixedly installed on the outer wall of the mounting box 13. A worm gear is fixedly installed at the output end of the control motor 15. A worm wheel that meshes with the worm gear is rotatably installed on the inner wall of the mounting box 13. The axial end of the worm wheel is fixedly connected to the center position of the axial end of the transmission gear 11 through a coupling.

[0073] The control motor 15 controls the rotation of the transmission gear 11 through the cooperation of a worm gear and a worm wheel. In this embodiment, a worm gear and worm wheel are chosen as the transmission components to control the rotation of the transmission gear 11 because the worm gear transmission has unidirectional characteristics. In actual use, this prevents the connecting rod 6 from being driven to rotate by its own weight, thereby improving the stability of the lifting and lowering of the connecting rod 6. At the same time, through the cooperation of the worm gear and worm wheel, the feed distance of the connecting rod 6 can be precisely controlled. During operation, the control motor 15 controls the connecting rod 6 to stop at the required points until it stabilizes, then a measurement is taken before subsequent measurements are performed. The movement of the control motor 15 is controlled by design software, thereby realizing point measurement through software design control. Measurements are taken at fixed points, thereby improving the quality of the measurement data. Moreover, the spacing of the point measurements is adjustable, for example, 0.1 meters or 1 meter, or a number in between.

[0074] like Figure 12 As shown, the control motor 15 is controlled by an external controller, and the software is installed in a laptop computer. Through information interaction between the computer and the controller, data measurement and position control of the measurement part during measurement are realized.

[0075] In a preferred embodiment of the present invention, the feeding and cleaning mechanism includes a mounting cylinder 10, cleaning bristles 16 and a drain hole 21. The mounting cylinder 10 is rotatably disposed above the mounting base 8. During use, the connecting rod 6 passes through the mounting cylinder 10 and is inserted into the mounting base 8.

[0076] The installation cylinder 10 has an elastic membrane inside, which is made of rubber. The cleaning bristles 16 are fixedly installed on the outer wall of the elastic membrane. When the connecting rod 6 is not installed, the screw above the connecting rod 6 is exposed. At this time, the elastic membrane is squeezed from the inside, so that the cleaning bristles 16 are in contact with the outer wall of the screw.

[0077] The inner wall of the mounting cylinder 10 is provided with a cavity, and the drain hole 21 is connected to the cavity inside the mounting cylinder 10. The drain hole 21 is inclined. Cleaning liquid is injected into the mounting cylinder 10 and discharged through the inclined drain hole 21. At this time, the back force of the drain hole 21 is used to control the rotation of the mounting cylinder 10. When the mounting cylinder 10 rotates, it drives the cleaning bristles 16 to rotate along the outer wall of the screw. With the spraying of cleaning liquid, the outer wall of the screw is cleaned. At the same time, due to the introduction of cleaning liquid, the internal pressure of the mounting cylinder 10 increases, which causes the elastic membrane to bulge outward, increasing the pressure of the cleaning bristles 16 on the outer wall of the screw, thereby improving the cleaning efficiency.

[0078] An adapter ring 23 is fixedly installed on the upper end face of the mounting base 8. A feed nozzle 24 is provided at the bottom of the adapter ring 23, and the feed nozzle 24 is connected to the inner cavity of the adapter ring 23.

[0079] The bottom of the mounting cylinder 10 is rotatably connected to the upper end face of the adapter ring 23 via a sealed bearing, and the inner cavity of the mounting cylinder 10 is connected to the inner cavity of the adapter ring 23. The adapter ring 23 serves as a support for the mounting cylinder 10 so that the mounting cylinder 10 can spray out cleaning liquid while rotating.

[0080] A conical plug 22 is elastically installed on the inner wall of the mounting cylinder 10, and a second through hole adapted to the conical plug 22 is opened on the inner wall of the mounting cylinder 10. The conical plug 22 is connected to the inner wall of the mounting cylinder 10 through a spring. The spring force pushes the conical plug 22, so that the conical plug 22 tends to block the second through hole inside the mounting cylinder 10 in real time. As the cleaning fluid enters the inner cavity of the mounting cylinder 10, the internal pressure of the mounting cylinder 10 increases until the internal cleaning of the mounting cylinder 10 pushes the conical plug 22 open, thereby facilitating the drainage of the drain hole 21 while the elastic membrane bulges outward, thereby improving the cleaning efficiency.

[0081] The material return cleaning mechanism includes a material return cylinder 26, an elastic ring 28, cleaning brush bristles 27, and a liquid inlet pipe 29. The material return cylinder 26 is fixedly installed at the bottom of the support base 2. When the connecting rod 6 is extended into the well, the connecting rod 6 passes through the material return cylinder 26. The elastic ring 28 is fixedly installed on the inner wall of the material return cylinder 26, and the outer wall of the elastic ring 28 is provided with a third through hole for liquid discharge. When cleaning liquid is introduced into the material return cylinder 26, the cleaning liquid is discharged through the third through hole on the outer wall of the elastic ring 28. When the connecting rod 6 is withdrawn, the outer wall of the connecting rod 6 is rinsed.

[0082] The cleaning bristles 27 are set on the outer wall of the elastic ring 28, and the liquid inlet pipe 29 is fixedly installed at the bottom of the discharge cylinder 26. The outer wall of the cleaning bristles 27 is in contact with the outer wall of the connecting rod 6. During the process of the connecting rod 6 rising, the cleaning bristles 27 and the connecting rod 6 slide relative to each other, and the cleaning liquid is sprayed out to achieve the cleaning of the outside of the connecting rod 6 during the discharge, so as to facilitate the storage of the connecting rod 6.

[0083] In a preferred embodiment of the present invention, an installation rod 3 is fixedly installed on the outer wall of the mounting base 8, and an adapter cylinder 9 is rotatably installed in the inner cavity of the installation rod 3. The adapter cylinder 9 has a hollow structure, and the other end of the adapter cylinder 9 is connected to the output end of an external water source through a sealed bearing. A drain hole for draining liquid is opened on the outer wall of the adapter cylinder 9. After the external water source injects cleaning liquid into the adapter cylinder 9, the cleaning liquid is discharged from the drain hole.

[0084] The outer wall of the mounting rod 3 is fixedly equipped with a feed pipe 17 and a discharge pipe 31. The feed pipe 17 is used to connect with the liquid inlet pipe 29, and the discharge pipe 31 is used to connect with the feed nozzle 24. When the adapter cylinder 9 is rotated until the drain hole is connected to the feed pipe 17, the external water source supplies water to the inner cavity of the discharge cylinder 26. When the adapter cylinder 9 is rotated until the drain hole is connected to the discharge pipe 31, the external water source supplies water to the inner cavity of the mounting cylinder 10.

[0085] In a preferred embodiment of the present invention, a transmission shaft 20 is fixedly installed at the center position of the axial end of the transmission gear 11. When the transmission gear 11 rotates, it drives the transmission shaft 20 to rotate. A toggle plate 18 is fixedly installed on the radial outer wall of the transmission shaft 20. When the transmission shaft 20 rotates, it drives the toggle plate 18 to rotate synchronously.

[0086] A transmission plate 32 is fixedly installed on the outer wall of the adapter cylinder 9. Both the actuating plate 18 and the transmission plate 32 are made of elastic material. When the transmission gear 11 controls the connecting rod 6 to extend into the well, the transmission shaft 20 pushes the transmission plate 32 downward through the actuating plate 18. At this time, the adapter cylinder 9 deflects downward, thereby keeping the drain hole connected to the discharge pipe 31. Then, when the connecting rod 6 extends into the well, the external water source is connected to the installation cylinder 10.

[0087] When the transmission gear 11 rotates in the reverse direction to control the connecting rod 6 to rise, the transmission shaft 20 pushes the transmission plate 32 upward through the actuating plate 18. At this time, the adapter cylinder 9 deflects upward, thereby keeping the drain hole connected to the feed pipe 17. Then, when the connecting rod 6 rises, it controls the external water source to be connected to the discharge cylinder 26.

[0088] It should be noted that in order to limit the rotation range of the adapter cylinder 9, a rotation damper needs to be installed between the mounting rod 3 and the adapter cylinder 9. At the same time, in order to maintain a sealed connection between the two, a sealed bearing needs to be installed between the mounting rod 3 and the adapter cylinder 9.

[0089] In a preferred embodiment of the present invention, a transfer tube 25 is fixedly installed at the bottom of the support base 2. One end of the transfer tube 25 is connected to the discharge tube 31 through a conduit, and the other end of the transfer tube 25 is connected to the liquid inlet tube 29 through a conduit. The transfer tube 25 enables the connection between the discharge tube 31 and the liquid inlet tube 29.

[0090] The inner wall of the adapter 25 is provided with a control membrane 35. The control membrane 35 is made of elastic material. One side of the control membrane 35 is located outside the adapter 25, and the other side of the control membrane 35 is located inside the adapter 25. When the cleaning fluid passes through the inner cavity of the adapter 25, the flow orifice of the inner cavity of the adapter 25 can be adjusted by squeezing the control membrane 35 from the outside to the inside.

[0091] When the cleaning fluid is injected into the discharge cylinder 26 through the transfer pipe 25, the water flow can be adjusted by adjusting the size of the flow hole in the inner cavity of the transfer pipe 25. This allows the elastic ring 28 to vibrate when spraying water, which in turn causes the cleaning brush bristles 27 to vibrate synchronously along the outer wall of the connecting rod 6, thereby improving the cleaning effect on the connecting rod 6 when it is withdrawn.

[0092] At the same time, when the vibrating cleaning bristles 27 spray out cleaning liquid outside the elastic ring 28, the cleaning bristles 27 can clean themselves, thereby maintaining the cleaning efficiency of the connecting rod 6.

[0093] In a preferred embodiment of the present invention, a piston cylinder 19 is fixedly installed on the upper end face of the support base 2, and a control piston 33 is slidably installed in the inner cavity of the piston cylinder 19, with the outer wall of the control piston 33 sealingly fitted to the inner wall of the piston cylinder 19.

[0094] The bottom of the piston cylinder 19 is fixedly connected to the outer wall of the adapter tube 25. The piston cylinder 19 and the inner cavity of the adapter tube 25 are interconnected. The piston cylinder 19 is located directly above the control diaphragm 35. The reciprocating sliding control piston 33 adjusts the air pressure in the inner cavity of the piston cylinder 19, thereby causing the control diaphragm 35 to sag and bulge.

[0095] A support frame 34 is fixedly installed on the inner wall of the piston cylinder 19. A guide rod 14 is elastically installed on the inner wall of the support frame 34. The outer wall of the guide rod 14 slides against the inner wall of the support frame 34. A spring is provided on the outside of the guide rod 14. The other end of the spring is fixedly connected to the outer wall of the support frame 34. After pressing the guide rod 14, the spring force controls the guide rod 14 to reset.

[0096] The bottom of the guide rod 14 is fixedly connected to the outer wall of the control piston 33. The outer wall of the drive shaft 20 is fixedly mounted with a drive cam 30 for pressing the guide rod 14. During the rotation of the drive shaft 20, the drive cam 30 is driven to press the guide rod 14. The spring force drives the control piston 33 to slide back and forth, thereby adjusting the reciprocating deformation of the control diaphragm 35 and realizing the reciprocating adjustment of the flow orifice diameter in the inner cavity of the control adapter pipe 25, so as to control the vibration of the cleaning brush bristles 27.

[0097] In this embodiment, the control diaphragm 35 is deformed by adjusting the air pressure inside the piston cylinder 19 through the control piston 33. Compared with the existing method of using a rigid rod to press the control diaphragm 35 to deform, this method can avoid scratching the control diaphragm 35 during operation, while maintaining uniform force on the control diaphragm 35 and improving the service life of the control diaphragm 35.

[0098] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0099] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0100] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A borehole magnetic tri-component logging device for automatic point measurement, characterized in that: The utility model provides a kind of measuring device, including measuring part, support part, control mechanism, feed cleaning mechanism and feed cleaning mechanism; The measuring part includes connecting rod (6) and measuring instrument body (1), one end of the connecting rod (6) is provided with screw rod, two adjacent connecting rods (6) are connected by screw rod, the measuring instrument body (1) is installed at the bottom of one connecting rod (6), the outer wall of the connecting rod (6) is provided with groove, and the groove is provided with tooth plate; The support part includes support base (2) and bearing seat (4), the bearing seat (4) is fixedly installed on the upper end surface of support base (2), and the bottom of the support base (2) is provided with a first through hole for the connecting rod (6) to pass through; The control mechanism includes rotating clamp plate (5) and transmission gear (11), the transmission gear (11) is rotatably arranged on the support base (2), and is engaged with the tooth plate, and the connecting rod (6) and the measuring instrument body (1) are lifted by the transmission gear (11) after the transmission gear (11) is rotated, the rotating clamp plate (5) is rotatably arranged on the bearing seat (4), and is engaged with the outer wall groove of the connecting rod (6) after the rotating clamp plate (5) is rotated, the two connecting rods (6) are connected by rotating the connecting rod (6); The feed cleaning mechanism is used for cleaning the screw rod outside the connecting rod (6) when the two connecting rods (6) are connected, the feed cleaning mechanism and the feed cleaning mechanism are controlled by the rotation direction of the transmission gear (11); The upper end surface of the support base (2) is fixedly provided with a mounting seat (8), the feed cleaning mechanism includes a mounting cylinder (10), cleaning bristles (16) and a drainage hole (21), the mounting cylinder (10) is rotatably arranged above the mounting seat (8), the mounting cylinder (10) is provided with an elastic film in the inside, the cleaning bristles (16) are fixedly installed on the outer wall of the elastic film, the inner wall of the mounting cylinder (10) is provided with a cavity, the drainage hole (21) is communicated with the cavity in the inside of the mounting cylinder (10), and the drainage hole (21) is inclinedly arranged; The outer wall of the mounting seat (8) is fixedly provided with a mounting rod (3), the inner cavity of the mounting rod (3) is rotatably provided with an adapter cylinder (9), the other end of the adapter cylinder (9) is connected with the output end of an external water source through a sealing bearing, the outer wall of the adapter cylinder (9) is provided with a drainage hole for draining water, the outer wall of the mounting rod (3) is fixedly provided with a feed pipe (17) and a feed pipe (31), the feed pipe (17) is used for connecting with a feed nozzle (24), and the feed pipe (31) is used for connecting with a feed pipe (29); The transmission shaft (20) is fixedly installed at the axial end center position of the transmission gear (11), the radial outer wall of the transmission shaft (20) is fixedly provided with a push plate (18), the outer wall of the adapter cylinder (9) is fixedly provided with a transmission piece (32), and the push plate (18) and the transmission piece (32) are both made of elastic material; the transmission shaft (20) drives the transmission piece (32) through the push plate (18).

2. The automatic point-the-bit magnetic triaxial well-logging device of claim 1, wherein: The upper end of the bearing seat (4) is fixedly installed with a mounting disc (7), and the outer wall of the mounting disc (7) is fixedly installed with a rotating motor (12) for controlling the rotation of the rotating clamping plate (5). The outer wall of the mounting seat (8) is fixedly installed with a mounting box (13), and the outer wall of the mounting box (13) is fixedly installed with a control motor (15) for controlling the rotation of the transmission gear (11).

3. A borehole magnetic tri-component logging apparatus for automatic point measurement as claimed in claim 2, characterized in that: The upper end surface of the mounting seat (8) is fixedly installed with an adapter ring (23), the bottom of the adapter ring (23) is provided with a feeding nozzle (24), the bottom of the mounting cylinder (10) is rotatably connected with the upper end surface of the adapter ring (23) through a sealing bearing, and the inner cavity of the mounting cylinder (10) is in communication with the inner cavity of the adapter ring (23). The inner wall of the mounting cylinder (10) is elastically installed with a conical plug (22), and the inner wall of the mounting cylinder (10) is provided with a second through hole matched with the conical plug (22).

4. The automatic point-the-bit magnetic triaxial well-logging apparatus of claim 3, wherein: The material returning and cleaning mechanism comprises a material returning cylinder (26), an elastic ring (28), cleaning bristles (27) and a liquid inlet pipe (29). The material returning cylinder (26) is fixedly installed at the bottom of the support base (2), the elastic ring (28) is fixedly installed on the inner wall of the material returning cylinder (26), the outer wall of the elastic ring (28) is provided with a third through hole for discharging liquid, the cleaning bristles (27) are arranged on the outer wall of the elastic ring (28), and the liquid inlet pipe (29) is fixedly installed at the bottom of the material returning cylinder (26).

5. A borehole magnetic tri-component logging apparatus for automatic point measurement as claimed in claim 4, characterized in that: The bottom of the support base (2) is fixedly installed with an adapter pipe (25), one end of the adapter pipe (25) is connected with the material returning pipe (31) through a conduit, the other end of the adapter pipe (25) is connected with the liquid inlet pipe (29) through a conduit, the inner wall of the adapter pipe (25) is provided with a control film (35), and the control film (35) is made of elastic material.

6. A borehole magnetic tri-component logging apparatus for automatic point measurement as defined in claim 5, wherein: The upper end surface of the support base (2) is fixedly installed with a piston cylinder (19), the inner cavity of the piston cylinder (19) is slidably installed with a control piston (33), the bottom of the piston cylinder (19) is fixedly connected with the outer wall of the adapter pipe (25), the inner cavity of the piston cylinder (19) is in communication with the inner cavity of the adapter pipe (25), and the piston cylinder (19) is located directly above the control film (35).

7. A borehole magnetic tri-component logging apparatus for automatic point measurement as defined in claim 6, wherein: The inner wall of the piston cylinder (19) is fixedly installed with a bearing frame (34), the inner wall of the bearing frame (34) is elastically installed with a guide rod (14), the bottom of the guide rod (14) is fixedly connected with the outer wall of the control piston (33), and the outer wall of the transmission shaft (20) is fixedly installed with a transmission cam (30) for pressing the guide rod (14).

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