In-well magnetic three-component well logging device with automatic spot measurement function

Abstract

The invention belongs to the technical field of in-well magnetic three-component logging, and particularly relates to an automatic spot measurement in-well magnetic three-component logging device which comprises a measuring part, a supporting part, a control mechanism, a feeding cleaning mechanism and a returning cleaning mechanism. The measuring part comprises connecting rods and a measuring instrument body, a screw rod is arranged at one end of each connecting rod, two adjacent connecting rods are connected through the screw rods, the measuring instrument body is mounted at the bottom of one connecting rod, a groove is formed in the outer wall of each connecting rod, and a toothed plate is arranged in each groove; the supporting part comprises a supporting base and a bearing seat; the bearing seat is fixedly mounted on the upper end surface of the supporting base; through cooperation of the structures, the posture of the measuring instrument body can be kept stable as much as possible in the process of stretching into a mine, meanwhile, in the measuring process, the measuring instrument body is prevented from shaking, the feeding distance of the connecting rod is accurately controlled, the point side purpose is achieved, and compared with existing continuous measurement, the measuring precision can be effectively improved.

Description

Technical Field

[0001] The invention belongs to the technical field of magnetic three-component measurement in a well, in particular to an automatic point-measurement magnetic three-component well logging device in a well. Background Art

[0002] Well magnetic three-component logging is a geophysical measurement technology used to detect underground geological structures and evaluate oil and gas resources. Magnetic three-component logging obtains geological information by measuring the three components of the underground magnetic field (usually the X, Y, and Z axis directions).

[0003] For example, patent CN210488007U, a three-component gravity gradient field and three-component magnetic gradient field acquisition device, which relates to the field of geophysical exploration technology. The device includes: a first acquisition unit and a second acquisition unit separated by a preset distance, each including: a three-component gravity acquisition device, a three-component magnetic field acquisition device, and a three-component attitude acquisition device; a three-component gravity gradient field and three-component magnetic gradient field calculation unit, which obtains the downhole gravity vertical gradient component and / or two horizontal gradient components of the downhole gravity horizontal gradient field, the downhole magnetic vertical gradient component and / or two horizontal gradient components of the downhole magnetic horizontal gradient field based on the three-component gravity data collected by the three-component gravity acquisition device and the three-component magnetic field data collected 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, during actual use, the staff found that the ground instrument vehicle tows the entire device through an armored cable. During measurement, due to the flexibility of the armored cable itself, it is easily affected by the external environment, causing the measuring part to shake during measurement. 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] At the same time, at present, magnetic three-component logging instruments are all continuous measurements. The instruments are in continuous motion during the journey, and data is measured when the instruments are at the measurement position, thus forming non-stop continuous acquisition. Since the instruments are still moving during measurement, the measured data cannot meet the accuracy requirements or the error of the re-measured data cannot meet the specification requirements.

[0006] To this end, the present invention provides an automatic point-measurement in-well magnetic three-component logging device. Summary of the invention

[0007] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0008] The technical solution adopted by the present invention to solve its technical problem is: the automatic point-measuring in-well magnetic three-component logging device described in the present invention comprises a measuring part, a supporting part, a control mechanism, a feeding cleaning mechanism and a returning cleaning mechanism.

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

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

[0011] The control mechanism includes a rotating clamping plate and a transmission gear. The transmission gear is rotatably arranged on the supporting base and is engaged with the toothed plate, and the lifting of the connecting rod is controlled by the rotation of the transmission gear. The rotating clamping plate is rotatably arranged on the bearing seat. After being engaged with the groove on the outer wall of the connecting rod, the connection of the two connecting rods is controlled by rotating the connecting rod.

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

[0013] The discharging and cleaning mechanism is used to clean the outer wall of the connecting rod when the connecting rod is withdrawn.

[0014] The cleaning of the feeding and cleaning mechanism and the discharging and cleaning mechanism is controlled by the rotation direction of the transmission gear.

[0015] Preferably, an installation disc is fixedly installed at the upper end of the bearing seat, and a rotating motor for controlling the rotation of the rotating clamping plate is fixedly installed on the outer wall of the installation disc.

[0016] An installation seat is fixedly installed on the upper end face of the supporting base, an installation box is fixedly installed on the outer wall of the installation seat, and a control motor for controlling the rotation of the transmission gear is fixedly installed on the outer wall of the installation box.

[0017] Preferably, the feeding and cleaning mechanism includes an installation cylinder, cleaning brush bristles and a liquid discharge hole. The installation cylinder is rotatably arranged above the installation seat. An elastic membrane is arranged inside the installation cylinder. The cleaning brush bristles are fixedly installed on the outer wall of the elastic membrane. A cavity is arranged on the inner wall of the installation cylinder. The liquid discharge hole is communicated with the cavity inside the installation cylinder and is inclined.

[0018] Preferably, a transfer ring is fixedly installed on the upper end face of the installation seat. A feeding nozzle is arranged at the bottom of the transfer ring. The bottom of the installation cylinder is rotatably connected to the upper end face of the transfer ring through a sealing bearing, and the inner cavity of the installation cylinder is communicated with the inner cavity of the transfer ring.

[0019] A conical plug is elastically installed on the inner wall of the installation cylinder, and a second through hole adapted to the conical plug is opened on the inner wall of the installation cylinder.

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

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

[0022] Preferably, a mounting rod is fixedly mounted on the outer wall of the mounting seat, a transfer tube is rotatably mounted on the inner cavity of the mounting rod, the other end of the transfer tube is connected to the output end of the external water source via a sealed bearing, a drainage hole for draining liquid is provided on the outer wall of the transfer tube, a feed pipe and a return pipe are fixedly mounted on the outer wall of the mounting rod, the feed pipe is used to be connected to the feed nozzle, and the return pipe is used to be connected to the liquid inlet pipe.

[0023] Preferably, a transmission shaft is fixedly mounted at the center position of the axial end of the transmission gear, a toggle plate is fixedly mounted on the radial outer wall of the transmission shaft, a transmission sheet is fixedly mounted on the outer wall of the adapter tube, and both the toggle plate and the transmission sheet are made of elastic material.

[0024] Preferably, a transfer tube is fixedly installed on the bottom of the support base, one end of the transfer tube is connected to the material return tube through a conduit, and the other end of the transfer tube is connected to the liquid inlet pipe 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 mounted on the upper end surface of the support base, a control piston is slidably mounted 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 interconnected, and the piston cylinder is located directly above the control membrane.

[0026] Preferably, a support frame is fixedly mounted on the inner wall of the piston cylinder, a guide rod is elastically mounted 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 mounted on the outer wall of the transmission shaft.

[0027] The beneficial effects of the present invention are as follows: 1. The present invention provides a connecting rod, which is used to connect the measuring instrument body. A rotating clamp and a transmission gear are also provided. The transmission gear is rotated to cooperate with the toothed plate on the outer wall of the connecting rod to control the lifting of the connecting rod, thereby controlling the lifting of the measuring instrument body. The groove on the outer wall of the connecting rod is aligned with the rotating clamp, and the upper connecting rod is rotated to connect the two connecting rods. The rigid connecting rod is used as a connection to connect the measuring instrument body. The posture of the measuring instrument body can be kept as stable as possible during the process of extending into the mine. At the same time, during the measurement process, the measuring instrument body is prevented from shaking, thereby improving the stability of the measurement.

[0028] 2. A worm gear is fixedly installed at the output end of the control motor, a worm wheel meshing with the worm gear is rotatably installed on the inner wall of the installation box, the axial end of the worm wheel is fixedly connected to the central position of the axial end of the transmission gear through a coupling shaft, and the control motor controls the rotation of the transmission gear through the cooperation of the worm gear and the worm wheel, so that the feeding distance of the connecting rod can be accurately controlled, thereby achieving the purpose of point measurement. Compared with the existing continuous measurement, the measurement accuracy can be effectively improved; 3. In the present invention, by providing a material discharging cylinder, an elastic ring and cleaning bristles, the elastic ring is fixedly installed on the inner wall of the material discharging cylinder, and a third through hole for liquid discharge is opened on the outer wall of the elastic ring. At the same time, a transfer pipe is provided, and a control film is arranged on the inner wall of the transfer pipe. The control film is made of an elastic material. When the cleaning liquid passes through the inner cavity of the transfer pipe, by squeezing the control film from the outside to the inside, the flow aperture of the inner cavity of the transfer pipe can be adjusted. By adjusting the size of the flow aperture of the inner cavity of the transfer pipe, the water flow can be adjusted, and then when the elastic ring sprays water, the elastic ring can be controlled to shake, driving the cleaning bristles to shake synchronously along the outer wall of the connecting rod, thereby improving the cleaning effect on the connecting rod when the connecting rod is withdrawn, promoting each other. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be further described below with reference to the accompanying drawings.

[0030] Figure 1 is a schematic structural diagram of the whole of the present invention; Figure 2 is an installation schematic diagram of the mounting seat in the present invention; Figure 3 is an installation schematic diagram of the transmission gear in the present invention; Figure 4 is an installation schematic diagram of the control motor in the present invention; Figure 5 is an installation schematic diagram of the installation cylinder in the present invention; Figure 6 is an internal structural schematic diagram of the installation cylinder in the present invention; Figure 7 is an installation schematic diagram of the material discharging cylinder in the present invention; Figure 8 is an internal structural schematic diagram of the material discharging cylinder in the present invention; Figure 9 is an installation schematic diagram of the piston cylinder in the present invention; Figure 10 is an internal structural schematic diagram of the installation rod in the present invention; Figure 11 is an installation schematic diagram of the control piston in the present invention; Figure 12 is a control framework diagram of the controller in the present invention.

[0031] In the figure: 1. Measuring instrument body; 2. Support base; 3. Installation rod; 4. Bearing seat; 5. Rotating clamping plate; 6. Connecting rod; 7. Installation disk; 8. Installation seat; 9. Adapter tube; 10. Installation tube; 11. Driving gear; 12. Rotating motor; 13. Installation box; 14. Guide rod; 15. Control motor; 16. Cleaning brush bristles; 17. Feed pipe; 18. Poking plate; 19. Piston cylinder; 20. Transmission shaft; 21. Drainage hole; 22. Conical plug; 23. Adapter ring; 24. Feed nozzle; 25. Adapter pipe; 26. Discharge tube; 27. Cleaning brush; 28. Elastic ring; 29. Liquid inlet pipe; 30. Transmission cam; 31. Discharge pipe; 32. Transmission piece; 33. Control piston; 34. Bearing frame; 35. Control film. Detailed implementation manners

[0032] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0033] As Figures 1 to 11 shown, an automatic point-measurement wellbore magnetic triaxial logging device of the present invention includes a measurement part, a support part, a control mechanism, a feed cleaning mechanism and a discharge cleaning mechanism.

[0034] Among them, wellbore triaxial magnetic measurement is a magnetic measurement method for measuring △X, △Y, △Z in a wellbore. After processing, △X, △Y, △Z, △H', △T' can be obtained. In an inclined hole, when accurate wellbore inclination azimuth angle data can be obtained, parameters such as △H, △H / , △H1, △T, △T / / , △T¹ can also be obtained.

[0035] Wellbore two-component magnetic measurement is a magnetic measurement method for measuring △H', △Z in a wellbore. When accurate wellbore inclination azimuth angle data can be obtained in an inclined hole, parameters such as △H, △H △H1, △T, △T / , △T1 can also be obtained.

[0036] The wellbore triaxial magnetometer is detected once a year. The detection should be carried out on a calibration table in a stable field area, and the detection method should comply with the provisions of Appendix A. The instrument turning error should meet the technical index requirements of the instrument.

[0037] The magnetic susceptibility logging instrument is calibrated once a year. The calibration should be carried out in all calibration devices, and the calibration points should be evenly distributed on the calibration curve. The calibration range should exceed the magnetization susceptibility values of the rock and ore cores in the boreholes of the work area.

[0038] The wellbore high-precision △T magnetometer is detected once a year. The detection should be carried out in a standard magnetic field generated by a Holm coil.

[0039] Before the new winch is used, 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%, the armored cable is replaced, or the photoelectric encoder is replaced, the depth correction coefficient needs to be recalibrated. For the correction method, refer to the instructions of each instrument manufacturer.

[0040] After the instrument passes the inspection and calibration, performance tests should be carried out, including the stability and repeatability quality inspections of the instrument.

[0041] The stability of the downhole three-component magnetometer is measured once every three months. The measurement time should be no less than 4 h, and the zero drift should be no greater than 100 nT. The stability of the magnetic susceptibility logging tool is measured once every three months. The measurement time should be no less than 4 h, and the zero drift should be no greater than 200×10- 5 SI; The stability of the downhole high-precision △T magnetometer is measured once every three months. The measurement should be carried out in a stable field area without interference. The mean square error between the data measured in different directions and different inclination angles after daily variation correction and its average value should be better than ±5 nT.

[0042] The insulation of the instrument and equipment should meet the following requirements: The insulation resistance of all kinds of connecting wires of the instrument to the ground should be greater than 10 MΩ; Under humid conditions, the insulation resistance between the cores of the downhole cable to the ground is greater than 2 MΩ.

[0043] The measuring part includes a connecting rod 6 and a measuring instrument body 1. One end of the connecting rod 6 is provided with a screw rod. Two adjacent connecting rods 6 are connected by the screw rod. The bottom of the connecting rod 6 is provided with a threaded hole. By aligning and then rotating the first and last positions of the two connecting rods 6, the connection of the two connecting rods 6 is realized.

[0044] 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 arranged in the groove. Among them, 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 △T magnetometer, and a magnetic susceptibility logging tool (which is well-known technology in this field and will not be elaborated here). Connect the measuring instrument body 1 with the connecting rod 6, and then insert the connecting rod 6 into the mine where data is to be obtained. As the measuring instrument body 1 goes deeper, assemble the connecting rod 6, so as to facilitate obtaining data at different depths.

[0045] The supporting part includes a supporting base 2 and a bearing seat 4. The bearing seat 4 is fixedly installed on the upper end surface of the supporting base 2. The bottom of the supporting base 2 is provided with a first through hole for the connecting rod 6 to pass through. During measurement, first, the supporting base 2 needs to be erected above the mine to be measured to bear the connecting rod 6 and the measuring instrument body 1.

[0046] The control mechanism includes a rotating clamping plate 5 and a transmission gear 11. The transmission gear 11 is rotatably arranged on the support base 2. After meshing with the toothed plate, the rotation of the transmission gear 11 controls the lifting of the connecting rod 6. By rotating the transmission gear 11, the lifting of the connecting rod 6 is controlled through the cooperation of the transmission gear 11 and the toothed plate on the outer wall of the connecting rod 6, thereby controlling the lifting of the measuring instrument body 1.

[0047] The rotating clamping plate 5 is rotatably arranged 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 penetrates deeper, another connecting rod 6 needs to be added. At this time, align the groove on the outer wall of the connecting rod 6 with the rotating clamping plate 5, insert the connecting rod 6 until the threaded hole at the bottom of the upper connecting rod 6 is aligned with the screw rod at the top of the lower connecting rod 6. At this time, rotate the upper connecting rod 6 to connect the two connecting rods 6. After the two connecting rods 6 are connected, continue to rotate the transmission gear 11 to control the descent of the measuring instrument body 1.

[0048] 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 toothed plates after the two connecting rods 6 are connected needs to be equal to the tooth pitch on the outer wall of the toothed plate.

[0049] After the measurement is completed, by rotating the transmission gear 11 in the reverse direction, the connecting rod 6 is controlled to rise until the upper connecting rod 6 is completely separated from the transmission gear 11. At this time, rotate the rotating clamping plate 5 in the reverse direction to separate the upper connecting rod 6 from the lower connecting rod 6, realizing the removal of the upper connecting rod 6. After the removal, the connecting rod 6 is stored for the next use.

[0050] Compared with the three-component gravity gradient field and three-component magnetic gradient field acquisition device in CN210488007U, the ground instrument vehicle pulls the whole device through the armored cable. Using the rigid connecting rod 6 as the connection to the measuring instrument body 1, it can keep the posture of the measuring instrument body 1 as stable as possible during the process of extending into the mine. At the same time, during the measurement process, it can prevent the measuring instrument body 1 from shaking, thereby improving the stability of the measurement.

[0051] The feeding cleaning mechanism is used to clean the screw rod outside the connecting rod 6 when the two connecting rods 6 are connected, so as to prevent sand and gravel from falling into the thread. When rotating and connecting, crushing the sand and gravel will cause the measuring instrument body 1 to shake, thereby maintaining the stability of the measuring instrument body 1 during the process of connecting the two connecting rods 6.

[0052] The discharging cleaning mechanism is used to clean the outer wall of the connecting rod 6 when the connecting rod 6 is withdrawn. When recycling the connecting rod 6, it cleans the outer wall of the connecting rod 6 to prevent sediment from sticking to the outer wall of the connecting rod 6.

[0053] The cleaning of the feeding cleaning mechanism and the discharging 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 of the connecting rod 6. By correlating the rotation direction of the transmission gear 11 with the cleaning of the feeding cleaning mechanism and the discharging cleaning mechanism, the required cleaning parts can be automatically cleaned according to the usage scenario during use.

[0054] As a preferred embodiment of the present invention, an installation disk 7 is fixedly installed at the upper end of the bearing seat 4. An external wall of the installation disk 7 is fixedly installed with a rotation motor 12 for controlling the rotation of the rotation clamping plate 5. An output end of the rotation motor 12 is fixedly installed with a worm. An inner wall of the installation disk 7 is rotatably installed with a worm gear meshing with the worm. A first through hole for the connecting rod 6 to pass through is formed in the worm gear. The rotation clamping plate 5 is fixedly installed on an inner wall of the worm gear. The rotation motor 12 controls the rotation of the worm gear through the worm, and further drives the rotation clamping plate 5 to rotate.

[0055] An installation seat 8 is fixedly installed on an upper end surface of the support base 2. An external wall of the installation seat 8 is fixedly installed with an installation box 13. An external wall of the installation box 13 is fixedly installed with a control motor 15 for controlling the rotation of the transmission gear 11. An output end of the control motor 15 is fixedly installed with a worm. An inner wall of the installation box 13 is rotatably installed with a worm gear meshing with the worm. An axial end of the worm gear is fixedly connected to a central position of an axial end of the transmission gear 11 through a coupling shaft.

[0056] The control motor 15 controls the rotation of the transmission gear 11 through the cooperation of the worm and the worm gear. In this embodiment, the worm and worm gear are selected as the transmission parts for controlling the rotation of the transmission gear 11 because the worm and worm gear transmission has unidirectionality, which can prevent the transmission gear 11 from rotating driven by the self-gravity of the connecting rod 6 during actual use, thereby improving the stability of controlling the lifting of the connecting rod 6. At the same time, through the cooperation of the worm gear and the worm, the feeding distance of the connecting rod 6 can be accurately controlled. During operation, the control motor 15 controls the connecting rod 6 to stop at the required positions respectively. After stabilizing, a measurement is taken, and then subsequent measurements are carried out. At the same time, the movement of the control motor 15 is controlled by a design software, thereby realizing point measurement through software design control. From fixed-point measurement, the quality of the measurement data is improved. And the spacing of the point measurement is adjustable, such as 0.1 meter or 1 meter, or a number between the two.

[0057] As Figure 12 shown, the control motor 15 is controlled by an external controller, and the software is installed in a laptop computer. Through the information interaction between the computer and the controller, data measurement and position control of the measurement part during measurement are realized.

[0058] As a preferred embodiment of the present invention, the feeding cleaning mechanism includes a mounting cylinder 10, cleaning bristles 16 and a liquid discharge hole 21. The mounting cylinder 10 is rotatably arranged above the mounting seat 8. Among them, during use, the connecting rod 6 penetrates through the mounting cylinder 10 and is inserted into the mounting seat 8.

[0059] An elastic membrane is arranged inside the mounting cylinder 10. The elastic membrane is made of rubber. The cleaning bristles 16 are fixedly installed on the outer wall of the elastic membrane. When the connecting rod 6 above is not installed, the screw above the connecting rod 6 is exposed. At this time, the elastic membrane is squeezed from the inside of the elastic membrane, so that the cleaning bristles 16 are attached to the outer wall of the screw.

[0060] A cavity is arranged on the inner wall of the mounting cylinder 10. The liquid discharge hole 21 is communicated with the cavity inside the mounting cylinder 10, and the liquid discharge hole 21 is inclined. When cleaning liquid is injected into the mounting cylinder 10, the cleaning liquid is discharged through the inclined liquid discharge hole 21. At this time, the reaction force of the liquid discharge through the liquid discharge 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. Combined with the spraying of the cleaning liquid, the washing of the outer wall of the screw is realized. At the same time, since the cleaning liquid is introduced, the pressure inside the mounting cylinder 10 increases, resulting in the elastic membrane bulging outwards, increasing the pressure of the cleaning bristles 16 on the outer wall of the screw, and thus improving the washing and cleaning efficiency.

[0061] A transfer ring 23 is fixedly installed on the upper end surface of the mounting seat 8. A feeding nozzle 24 is arranged at the bottom of the transfer ring 23. The feeding nozzle 24 is communicated with the inner cavity of the transfer ring 23.

[0062] The bottom of the mounting cylinder 10 is rotatably connected to the upper end surface of the transfer ring 23 through a sealed bearing, and the inner cavity of the mounting cylinder 10 is communicated with the inner cavity of the transfer ring 23. The transfer ring 23 serves as a support for the mounting cylinder 10, so as to facilitate the mounting cylinder 10 to rotate while spraying cleaning liquid.

[0063] 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 elastic force of the spring pushes the conical plug 22, so that the conical plug 22 always has a tendency to block the second through hole inside the mounting cylinder 10. As the cleaning liquid is introduced into the inner cavity of the mounting cylinder 10, the pressure inside the mounting cylinder 10 increases until the cleaning inside the mounting cylinder 10 pushes the conical plug 22 away, thus facilitating the drainage of the liquid discharge hole 21 while the elastic membrane bulges outwards, and further improving the cleaning efficiency.

[0064] The material return cleaning mechanism comprises a material return barrel 26, an elastic ring 28, cleaning bristles 27 and a liquid inlet pipe 29. The material return barrel 26 is fixedly mounted on 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 barrel 26. The elastic ring 28 is fixedly mounted on the inner wall of the material return barrel 26. 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 barrel 26, the cleaning liquid is discharged from the third through hole on the outer wall of the elastic ring 28, and the outer wall of the connecting rod 6 is flushed when the connecting rod 6 is withdrawn.

[0065] 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 return barrel 26. The outer wall of the cleaning bristles 27 is in contact with the outer wall of the connecting rod 6. During the rising process of the connecting rod 6, the cleaning bristles 27 slide relative to the connecting rod 6, and the cleaning liquid is sprayed out, thereby realizing the cleaning of the outside of the connecting rod 6 when returning the material, so as to facilitate the storage of the connecting rod 6.

[0066] As a preferred embodiment of the present invention, a mounting rod 3 is fixedly mounted on the outer wall of the mounting seat 8, and a switching tube 9 is rotatably mounted in the inner cavity of the mounting rod 3. The switching tube 9 is a hollow structure, and the other end of the switching tube 9 is connected to the output end of the external water source through a sealed bearing. A drainage hole for draining liquid is provided on the outer wall of the switching tube 9. After the external water source injects cleaning liquid into the switching tube 9, the cleaning liquid is discharged from the drainage hole.

[0067] The outer wall of the mounting rod 3 is fixedly mounted with a feed pipe 17 and a return pipe 31. The feed pipe 17 is used to be connected to the liquid inlet pipe 29, and the return pipe 31 is used to be connected to the feed nozzle 24. When the adapter tube 9 is rotated until the drainage hole is connected to the feed pipe 17, the external water source supplies water to the inner cavity of the return tube 26. When the adapter tube 9 is rotated until the drainage hole is connected to the return pipe 31, the external water source supplies water to the inner cavity of the mounting tube 10.

[0068] As 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.

[0069] A transmission plate 32 is fixedly installed on the outer wall of the adapter tube 9. The toggle plate 18 and the transmission plate 32 are both 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 toggle plate 18. At this time, the adapter tube 9 deflects downward, thereby keeping the drainage hole connected to the return tube 31, and then controlling the external water source to be connected to the installation tube 10 when the connecting rod 6 extends into the well.

[0070] When the transmission gear 11 rotates in the opposite direction to control the connecting rod 6 to rise, the transmission shaft 20 pushes the transmission plate 32 upward through the toggle plate 18. At this time, the adapter cylinder 9 deflects upward, thereby keeping the drainage hole connected to the feed pipe 17, and then when the connecting rod 6 rises, the external water source is controlled to be connected to the return cylinder 26.

[0071] It should be noted that in order to limit the rotation range of the adapter tube 9, a rotation damper needs to be provided between the mounting rod 3 and the adapter tube 9. At the same time, in order to maintain a sealed connection between the two, a sealed bearing needs to be provided between the mounting rod 3 and the adapter tube 9.

[0072] As 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 return 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, and the connection between the return tube 31 and the liquid inlet tube 29 is realized through the transfer tube 25.

[0073] A control membrane 35 is provided on the inner wall of the transfer tube 25. The control membrane 35 is made of elastic material. One side of the control membrane 35 is located outside the transfer tube 25, and the other side of the control membrane 35 is located inside the transfer tube 25. When the cleaning liquid passes through the inner cavity of the transfer tube 25, the flow aperture of the inner cavity of the transfer tube 25 can be adjusted by squeezing the control membrane 35 from the outside to the inside.

[0074] When the transfer tube 25 injects cleaning liquid into the withdrawal barrel 26, the water flow size can be adjusted by adjusting the flow aperture size of the inner cavity of the transfer tube 25, and then the elastic ring 28 is controlled to shake when the elastic ring 28 sprays water, driving the cleaning bristles 27 to shake synchronously along the outer wall of the connecting rod 6, thereby improving the cleaning effect of the connecting rod 6 when withdrawing the connecting rod 6.

[0075] At the same time, when the shaking cleaning bristles 27 flush out the cleaning liquid outside the elastic ring 28, the cleaning bristles 27 can clean themselves, thereby maintaining the cleaning efficiency of the connecting rod 6.

[0076] As a preferred embodiment of the present invention, a piston cylinder 19 is fixedly mounted on the upper end surface of the support base 2 , a control piston 33 is slidably mounted in the inner cavity of the piston cylinder 19 , and the outer wall of the control piston 33 is sealingly fitted to the inner wall of the piston cylinder 19 .

[0077] The bottom of the piston cylinder 19 is fixedly connected to the outer wall of the transfer tube 25. The inner cavities of the piston cylinder 19 and the transfer tube 25 are interconnected, and the piston cylinder 19 is located directly above the control membrane 35. The reciprocating sliding control piston 33 adjusts the air pressure in the inner cavity of the piston cylinder 19, thereby driving the control membrane 35 to sink and bulge.

[0078] A bearing 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 bearing frame 34. The outer wall of the guide rod 14 is slidably attached to the inner wall of the bearing frame 34. A spring is arranged outside the guide rod 14, and the other end of the spring is fixedly connected to the outer wall of the bearing frame 34. After pressing the guide rod 14, the guide rod 14 is controlled to reset by the elastic force of the spring.

[0079] The bottom of the guide rod 14 is fixedly connected to the outer wall of the control piston 33. A transmission cam 30 for pressing the guide rod 14 is fixedly installed on the outer wall of the transmission shaft 20. During the rotation of the transmission shaft 20, the transmission cam 30 is driven to press the guide rod 14. Cooperating with the elastic force of the spring, the control piston 33 is driven to reciprocate, so as to adjust the reciprocating deformation of the control film 35, and realize the reciprocating adjustment of the flow aperture in the inner cavity of the control adapter tube 25, so as to control the shaking of the cleaning brush bristles 27.

[0080] In this embodiment, by adjusting the air pressure in the piston cylinder 19 through the control piston 33 to drive the deformation of the control film 35, compared with the existing method of using a rigid rod to press the control film 35 to deform, it is possible to avoid scratching the control film 35 during operation, and at the same time keep the force on the control film 35 uniform, and improve the service life of the control film 35.

[0081] The above front, back, left, right, up, and down are all based on Figure 1 in the attached drawings of the specification. Taking the perspective of the person observing as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0082] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the protection scope of the present invention.

[0083] The above shows and describes 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 by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An in-well magnetic triaxial logging device for automatic point measurement, characterized in that: It includes a measuring part, a supporting part, a control mechanism, a feeding cleaning mechanism and a discharging cleaning mechanism; The measuring part includes a connecting rod (6) and a measuring instrument body (1). One end of the connecting rod (6) is provided with a screw rod. Two adjacent connecting rods (6) are connected by the screw rod. The measuring instrument body (1) is installed at the bottom of one of the connecting rods (6). A groove is provided on the outer wall of the connecting rod (6), and a toothed plate is arranged in the groove; The supporting part includes a supporting base (2) and a bearing seat (4). The bearing seat (4) is fixedly installed on the upper end surface of the supporting base (2). A first through hole for the connecting rod (6) to pass through is opened at the bottom of the supporting base (2); The control mechanism includes a rotating clamping plate (5) and a transmission gear (11). The transmission gear (11) is rotatably arranged on the supporting base (2), and after meshing with the toothed plate, the lifting of the connecting rod (6) and the measuring instrument body (1) is controlled by the rotation of the transmission gear (11). The rotating clamping plate (5) is rotatably arranged on the bearing seat (4). After being engaged with the groove on the outer wall of the connecting rod (6), the connection of the two connecting rods (6) is controlled by rotating the connecting rod (6); The feeding cleaning mechanism is used to clean the screw rod outside the connecting rod (6) when the two connecting rods (6) are connected; the discharging cleaning mechanism is used to clean the outer wall of the connecting rod (6) when the connecting rod (6) exits; the cleaning of the feeding cleaning mechanism and the discharging cleaning mechanism is controlled by the rotation direction of the transmission gear (11).

2. An in-well magnetic triaxial logging device for automatic point measurement according to claim 1, wherein: An installation disc (7) is fixedly installed on the upper end of the bearing seat (4), and a rotating motor (12) for controlling the rotation of the rotating clamping plate (5) is fixedly installed on the outer wall of the installation disc (7); An installation seat (8) is fixedly installed on the upper end surface of the supporting base (2), an installation box (13) is fixedly installed on the outer wall of the installation seat (8), and a control motor (15) for controlling the rotation of the transmission gear (11) is fixedly installed on the outer wall of the installation box (13).

3. The automatic point-measurement borehole magnetic triaxial logging device according to claim 2, characterized in that: The feeding cleaning mechanism includes an installation cylinder (10), cleaning brush hairs (16) and a liquid discharge hole (21). The installation cylinder (10) is rotatably arranged above the installation seat (8). An elastic membrane is arranged inside the installation cylinder (10). The cleaning brush hairs (16) are fixedly installed on the outer wall of the elastic membrane. A cavity is arranged on the inner wall of the installation cylinder (10). The liquid discharge hole (21) is communicated with the cavity inside the installation cylinder (10), and the liquid discharge hole (21) is inclined; 4. An in-well magnetic triaxial logging device for automatic point measurement according to claim 3, wherein: A transfer ring (23) is fixedly installed on the upper end surface of the installation seat (8), a feeding nozzle (24) is arranged at the bottom of the transfer ring (23), and the bottom of the installation cylinder (10) is rotatably connected to the upper end surface of the transfer ring (23) through a sealing bearing, and the inner cavity of the installation cylinder (10) is communicated with the inner cavity of the transfer ring (23); A conical plug (22) is elastically installed on the inner wall of the installation cylinder (10), and a second through hole adapted to the conical plug (22) is opened on the inner wall of the installation cylinder (10).

5. An in-well magnetic triaxial logging device for automatic point measurement according to claim 4, characterized in that: The discharging cleaning mechanism includes a discharging cylinder (26), an elastic ring (28), cleaning brush hairs (27) and a liquid inlet pipe (29); The material discharging 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 discharging cylinder (26), and the outer wall of the elastic ring (28) is provided with a third through hole for liquid discharge. The cleaning brush bristles (27) are arranged on the outer wall of the elastic ring (28). The liquid inlet pipe (29) is fixedly installed at the bottom of the material discharging cylinder (26).

6. The automatic point-measurement borehole magnetic triaxial logging device according to claim 5, characterized in that: An installation rod (3) is fixedly installed on the outer wall of the installation seat (8). A transfer cylinder (9) is rotatably installed in the inner cavity of the installation rod (3). The other end of the transfer cylinder (9) is connected to the output end of an external water source through a sealed bearing. The outer wall of the transfer cylinder (9) is provided with drain holes for liquid discharge. A feed pipe (17) and a material discharging pipe (31) are fixedly installed on the outer wall of the installation rod (3). The feed pipe (17) is used to connect with the feed nozzle (24), and the material discharging pipe (31) is used to connect with the liquid inlet pipe (29).

7. An in-well magnetic triaxial logging device for automatic point measurement according to claim 6, characterized in that: A transmission shaft (20) is fixedly installed at the central position of the axial end of the transmission gear (11). A shifting plate (18) is fixedly installed on the radial outer wall of the transmission shaft (20). A transmission piece (32) is fixedly installed on the outer wall of the transfer cylinder (9). Both the shifting plate (18) and the transmission piece (32) are made of elastic materials.

8. An in-well magnetic triaxial logging device for automatic point measurement according to claim 7, characterized in that: A transfer pipe (25) is fixedly installed at the bottom of the support base (2). One end of the transfer pipe (25) is connected to the material discharging pipe (31) through a conduit, and the other end of the transfer pipe (25) is connected to the liquid inlet pipe (29) through a conduit. A control film (35) is arranged on the inner wall of the transfer pipe (25). The control film (35) is made of an elastic material.

9. The downhole magnetic triaxial logging device for automatic spot measurement according to claim 8, characterized in that: A piston cylinder (19) is fixedly installed on the upper end surface of the support base (2). A control piston (33) is slidably installed in the inner cavity of the piston cylinder (19). The bottom of the piston cylinder (19) is fixedly connected to the outer wall of the transfer pipe (25). The inner cavities of the piston cylinder (19) and the transfer pipe (25) are mutually communicated, and the piston cylinder (19) is located directly above the control film (35).

10. The automatic point-measurement borehole magnetic triaxial logging device according to claim 9, wherein: A bearing 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 bearing frame (34). The bottom of the guide rod (14) is fixedly connected to the outer wall of the control piston (33). A transmission cam (30) for pressing the guide rod (14) is fixedly installed on the outer wall of the transmission shaft (20).

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