Auxiliary device of downhole while-drilling gyro inclinometer

Abstract

The invention relates to the technical field of inclinometers while drilling, in particular to an auxiliary device for an underground gyro inclinometer while drilling, which comprises a rotary valve, a multi-stage filter unit is mounted on the right side of the rotary valve, and a plurality of grinding units which are uniformly arranged left and right are mounted on the multi-stage filter unit. Dredging units are mounted on the multi-stage filtering unit and located on the left side of the grinding unit, and the grinding unit is used for grinding and smashing rock debris and other impurities; impurities such as rock debris in drilling fluid can be filtered in a multi-stage mode, the situation that the rock debris and other impurities are accumulated together due to the fact that the flow speed of the drilling fluid is too high is prevented, the measurement precision of the inclinometer is ensured, meanwhile, the multi-stage filtering unit can be dredged, and then it is ensured that the multi-stage filtering unit can continuously filter the rock debris and other impurities; and drilling fluid can be uniformly stirred, so that impurities such as rock debris are uniformly distributed in the drilling fluid, the impurities such as rock debris are further prevented from being accumulated together, and meanwhile, the filtering efficiency of the filter plate on the drilling fluid is improved.

Description

Technical Field

[0001] The invention relates to the technical field of while-drilling inclinometers, in particular to an auxiliary device for a downhole while-drilling gyro inclinometer. Background Art

[0002] The gyro inclinometer while drilling is a technical device for measuring the wellbore trajectory parameters in real time during the drilling process. It is mainly composed of a sensor module, a data processing module and a rotary valve. The rotary valve is composed of parts such as a shell, a rotor and a stator. The rotary valve is mainly used to control the generation of drilling fluid pulse signals, thereby transmitting downhole measurement data to the ground. When the existing drilling fluid flows into the rotary valve, due to the presence of impurities such as cuttings in the drilling fluid, a filtering device and a crushing device are usually installed on the rotary valve. The filtering device is used to filter the impurities such as cuttings in the drilling fluid, and the crushing device is used to crush the impurities such as cuttings, thereby reducing the impact of impurities such as cuttings on the rotary valve, ensuring the service life of the rotary valve, and preventing impurities such as cuttings from clogging the inside of the rotary valve.

[0003] The following problems exist when filtering impurities such as cuttings in drilling fluid: 1. When filtering and crushing impurities such as cuttings, a one-time process is used. However, due to the presence of impurity particles such as cuttings of different sizes in the drilling fluid, one-time filtering leads to slow filtration and untimely crushing of impurities such as cuttings. As a result, the filtering device may not be able to filter the impurities such as cuttings in time, resulting in the accumulation of impurities such as cuttings. The accumulated impurities such as cuttings may affect the flow characteristics of the drilling fluid, thereby affecting the measurement accuracy of the inclinometer; 2. When the filtering device filters impurities such as cuttings, the impurities such as cuttings may clog the filter holes of the filtering device, thereby affecting the filtering effect of the filtering device on impurities such as cuttings in the drilling fluid. Summary of the invention

[0004] In order to solve the above technical problems, the present invention adopts the following technical scheme: an auxiliary device for a downhole gyro inclinometer while drilling, comprising a rotary valve, a multi-stage filter unit is installed on the right side of the rotary valve, a grinding unit is installed on the multi-stage filter unit and is evenly arranged circumferentially from left to right, a dredging unit is installed on the multi-stage filter unit and on the left side of the grinding unit, and the grinding unit is used to grind and crush rock cuttings and impurities; the multi-stage filter unit comprises a cylinder fixedly installed on the right end of the rotary valve, a rotating mechanism is installed on the left side of the cylinder, a rotating shaft is installed on the right end of the rotating mechanism, a plurality of filter plates evenly arranged from left to right are fixedly installed on the right side of the cylinder, and the filter plates are rotatably connected to the rotating shaft, and the filter hole size of the filter plates is from right to left. It decreases successively toward the left, and a stirring mechanism for stirring the drilling fluid is installed at the right end of the outer side of the rotating shaft; a plurality of connecting plates are fixedly installed evenly circumferentially inside the cylinder and on the right side of each filter plate, and a plurality of matching rods evenly arranged along the length direction are fixedly installed on the left side of the connecting plate; the dredging unit includes a plurality of fixed plates fixedly installed on the outer side of the rotating shaft and on the left side of the filter plate and evenly arranged in the circumferential direction, and a plurality of dredging rods evenly arranged along the length direction are installed on the right side of the fixed plate through a top extension spring for sliding left and right, the right end of the dredging rod is set to a truncated cone structure, and the dredging rod and the filter holes of the filter plate on its right side correspond one to one, and two symmetrically arranged impact mechanisms are fixedly installed on the fixed plate, and the impact mechanism is used to impact the dredging rod to the right.

[0005] Preferably, the impact mechanism includes a square tube fixedly mounted on a fixed plate, a synchronization rod is installed on the upper and lower inner walls of the square tube on one side away from the fixed plate for sliding left and right, and the synchronization rod is initially located at the right extreme position, an electric slider assembly is installed between the end of the synchronization rod away from the fixed plate and the square tube, a square block is fixedly installed on the side of the synchronization rod close to the fixed plate and at a position corresponding to the dredging rod, and a paddle is installed on the side of the square block close to the rotating shaft for sliding movement via a connecting spring.

[0006] Preferably, a lifting column is fixedly installed on the side of the shift plate close to the fixed plate, and a plurality of lifting blocks evenly arranged up and down are fixedly installed on the left end of the inner wall of the square tube close to the fixed plate, and the installation positions of the lifting blocks correspond to the installation positions of the lifting columns one by one, and the right end of the lifting block away from the rotating shaft is provided with an inclined surface for driving the lifting column to move upward.

[0007] Preferably, the right side of the end of the paddle plate close to the rotating shaft is set as an inclined surface, and the position of the dredging rod corresponding to the left inner wall of the square tube is installed with an impact rod for sliding left and right through an impact spring, and the right end of the impact rod slides left and right through the right side wall of the square tube and is fixedly installed with a fitting plate, and the left end of the impact rod away from the rotating shaft is fixedly installed with a matching plate, and the right side of the matching plate is initially arranged in fit with the corresponding left side of the paddle plate.

[0008] Preferably, round rods are fixedly installed at positions corresponding to the bonding plates on the dredging rods, and the right side of the bonding plate and the corresponding round rod are arranged in a bonding manner.

[0009] Preferably, the stirring mechanism includes a plurality of circumferentially evenly arranged square rods slidably mounted on the outside of the rotating shaft, a clamping spring is connected between the square rods and the rotating shaft, and a plurality of stirring plates evenly arranged along the length direction of the square rods are fixedly mounted on the right side of the square rods.

[0010] Preferably, the end of the square rod away from the rotating shaft is set as an arc structure, a ring is fixedly installed on the inner wall of the cylinder corresponding to the position of the square rod, and the inner wall of the ring is set as a wave structure for cooperating with the arc structure of the square rod to drive the square rod to reciprocate.

[0011] Preferably, a plurality of arc grooves evenly arranged in the circumferential direction are provided on the outside of the rotating shaft and on the right side of each filter plate, and the grinding unit includes an arc slider slidably installed in the arc groove, a return spring is connected between the arc slider and the rotating shaft, a slide plate is slidably installed on the upper end of the arc slider, a plurality of grinding rods are fixedly installed on the right end of the slide plate, and the grinding rods and their corresponding matching rods are arranged alternately.

[0012] Preferably, a corrugated groove is provided on the inner wall of the arc groove on the rotating shaft near the center of the rotating shaft, a toggle rod is fixedly installed at the lower end of the slide plate, and the lower end of the toggle rod slides left and right through the arc slide block and is slidably installed in the corrugated groove.

[0013] Preferably, the rotating mechanism includes a sealing cylinder distributed on the left side of the cylinder, the outer side of the sealing cylinder is fixedly connected to the cylinder through a plurality of circumferentially evenly arranged fixing rods, the right end of the sealing cylinder is rotatably connected to the left end of the rotating shaft, a motor is fixedly installed on the left inner wall of the sealing cylinder, and the motor output shaft is fixedly connected to the rotating shaft.

[0014] The beneficial effects of the present invention are as follows: 1. The present invention filters impurities such as rock cuttings in the drilling fluid by arranging a plurality of filter plates, and the filter hole sizes of the filter plates decrease from right to left, thereby realizing multi-stage filtration of impurities such as rock cuttings. The present invention grinds the filtered impurities such as rock cuttings by arranging a plurality of grinding units, thereby ensuring that impurities such as rock cuttings can pass through the filter holes of the corresponding filter plates in time, thereby preventing impurities such as rock cuttings from piling up, and ensuring the measurement accuracy of the inclinometer.

[0015] 2. The present invention dredges the filter holes of the filter plate by setting a dredging rod to prevent impurities such as rock debris from clogging the filter holes of the filter plate. At the same time, the present invention sets an impact mechanism to continuously impact the dredge rod, so that the dredge rod can thoroughly dredge the filter holes of the filter plate, thereby ensuring the filtering effect of the filter plate on the drilling fluid.

[0016] 3. The present invention arranges the waveform structure of the circular ring and the arc structure of the square rod to cooperate so that the square rod can reciprocate radially along the rotating axis while rotating, thereby enabling the square rod to drive multiple stirring plates to reciprocate radially along the rotating axis, so that the stirring plates can stir the drilling fluid evenly, and make impurities such as cuttings evenly distributed in the drilling fluid, further preventing impurities such as cuttings from piling up, and at the same time increasing the filtering efficiency of the filter plate on the drilling fluid. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the present invention after a part of the cylinder is cut away.

[0020] Figure 3 It is a front view of the multi-stage filtering unit, the dredging unit and the grinding unit after the cylinder and the sealing cylinder are partially cut away.

[0021] Figure 4 It is a right side view of the stirring mechanism after the right end of the rotating shaft is partially cut away.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the grinding unit and the rotating shaft after the slide plate and the arc-shaped sliding block are partially cut away according to the present invention.

[0023] Figure 6 The present invention Figure 5 Enlarged view of point A.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the partial structure of the dredging unit after the fixing plate is partially removed in the present invention.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the dredging unit part structure after the square tube is partially cut away.

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the impact mechanism structure after a part of the square tube is cut away.

[0027] Reference numerals: 1, rotary valve; 2, multi-stage filtering unit; 21, cylinder; 211, ring; 22, rotating mechanism; 221, sealing cylinder; 222, fixing rod; 223, motor; 23, rotating shaft; 231, corrugated groove; 24, filter plate; 25, stirring mechanism; 251, square rod; 252, pressing spring; 253, stirring plate; 26, connecting plate; 27, matching rod; 3, dredging unit; 31, fixing plate; 32, extension spring; 33, dredging rod; 331. round rod; 34. impact mechanism; 341. square tube; 3411. impact spring; 3412. impact rod; 3413. fitting plate; 3414. matching plate; 342. synchronization rod; 343. electric slider assembly; 344. square block; 345. connecting spring; 346. paddle plate; 347. lifting column; 348. lifting block; 4. grinding unit; 41. arc slider; 42. return spring; 43. slide plate; 44. grinding rod; 45. paddle rod. DETAILED DESCRIPTION

[0028] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0029] See also Figure 1 and Figure 2 A downhole gyro inclinometer auxiliary device comprises a rotary valve 1, a multi-stage filter unit 2 is installed on the right side of the rotary valve 1, grinding units 4 are installed on the multi-stage filter unit 2 and are evenly arranged circumferentially from left to right, and a dredging unit 3 is installed on the multi-stage filter unit 2 and on the left side of the grinding unit 4, and the grinding unit 4 is used for grinding and crushing rock cuttings and impurities.

[0030] The present invention can perform multi-stage filtration on impurities such as cuttings in the drilling fluid, thereby preventing the impurities such as cuttings from piling up due to excessive flow rate of the drilling fluid, thereby ensuring the measurement accuracy of the inclinometer, and at the same time, the present invention can also dredge the multi-stage filter unit 2, thereby ensuring that the multi-stage filter unit 2 can continuously filter impurities such as cuttings; specifically, before the drilling fluid flows into the rotary valve 1, the drilling fluid can first pass through the multi-stage filter unit 2, and by starting the multi-stage filter unit 2, the impurities such as cuttings in the drilling fluid can be multi-stage filtered, and the grinding unit 4 can grind and crush the impurities such as cuttings after filtering, thereby preventing the impurities such as cuttings from being too large to block the filter unit 2, ensuring that the impurities passing through the filter unit 2 will not affect the rotary valve 1, and when the multi-stage filter unit 2 filters the drilling fluid, the dredging unit 3 can dredge the multi-stage filter unit 2, thereby preventing the impurities such as cuttings from blocking the multi-stage filter unit 2, thereby ensuring that the multi-stage filter unit 2 continuously filters the drilling fluid.

[0031] See also Figure 2The multi-stage filtering unit 2 includes a cylinder 21 fixedly mounted on the right end of the rotary valve 1, a rotating mechanism 22 is mounted on the left side of the cylinder 21, a rotating shaft 23 is mounted on the right end of the rotating mechanism 22, a plurality of filter plates 24 evenly arranged from left to right are fixedly mounted on the right side of the cylinder 21, and the filter plates 24 are rotatably connected to the rotating shaft 23, the filter hole size of the filter plates 24 decreases from right to left, and a stirring mechanism 25 for stirring drilling fluid is mounted on the right end of the outer side of the rotating shaft 23.

[0032] See also Figure 2 and Figure 3 The rotating mechanism 22 includes a sealing cylinder 221 distributed on the left side inside the cylinder 21. The outer side of the sealing cylinder 221 is fixedly connected to the cylinder 21 through a plurality of circumferentially evenly arranged fixing rods 222. The right end of the sealing cylinder 221 is rotatably connected to the left end of the rotating shaft 23. A motor 223 is fixedly installed on the left inner wall of the sealing cylinder 221, and the output shaft of the motor 223 is fixedly connected to the rotating shaft 23.

[0033] The multi-stage filtering unit 2 is used for multi-stage filtering of rock cuttings in the drilling fluid, and the rotating mechanism 22 is used for driving the rotating shaft 23 to rotate; specifically, when the drilling fluid flows into the cylinder 21 from the right end of the cylinder 21, the starting motor 223 is controlled to drive the rotating shaft 23 to rotate, and the rotating shaft 23 drives the stirring mechanism 25 to stir the drilling fluid evenly first, so that impurities such as rock cuttings are evenly distributed in the drilling fluid, thereby increasing the filtering efficiency of the filter plate 24 for the drilling fluid. When the drilling fluid flows to the corresponding position of the filter plate 24, the filter plate 24 can filter the drilling fluid, and the size of the filter holes of the filter plate 24 decreases from right to left, thereby realizing multi-stage filtering of the drilling fluid, preventing the accumulation of impurities such as rock cuttings due to excessive flow rate of the drilling fluid, and ensuring the measurement accuracy of the inclinometer.

[0034] See also Figure 1 , Figure 2 and Figure 4 The stirring mechanism 25 includes a plurality of circumferentially uniformly arranged square rods 251 slidably mounted on the outside of the rotating shaft 23, a tightening spring 252 is connected between the square rod 251 and the rotating shaft 23, and a plurality of stirring plates 253 uniformly arranged along the length direction of the square rod 251 are fixedly mounted on the right side of the square rod 251; the end of the square rod 251 away from the rotating shaft 23 is arranged as an arc structure, and a circular ring 211 is fixedly mounted on the inner wall of the cylinder 21 at a position corresponding to the square rod 251, and the inner wall of the circular ring 211 is arranged as a wave structure for cooperating with the arc structure of the square rod 251 to drive the square rod 251 to move back and forth.

[0035] The stirring mechanism 25 is used to stir the drilling fluid evenly, so that impurities such as rock cuttings are evenly distributed in the drilling fluid, and the filtering efficiency of the filter plate 24 on the drilling fluid is increased; specifically, when the rotating shaft 23 rotates, the rotating shaft 23 drives the multiple square rods 251 to rotate synchronously, and the arc structure of the square rod 251 is always pressed against the inner side of the corrugated structure of the circular ring 211 under the action of the pressing spring 252, so that the corrugated structure of the circular ring 211 can cooperate with the arc structure of the square rod 251 to drive the square rod 251 to reciprocate along the radial direction of the rotating shaft 23, and then the square rod 251 drives the multiple stirring plates 253 to reciprocate along the radial direction of the rotating shaft 23, so that the stirring plates 253 can stir the drilling fluid evenly.

[0036] See also Figure 2 A plurality of connecting plates 26 are evenly and fixedly installed in the cylinder 21 and on the right side of each filter plate 24 in the circumferential direction, and a plurality of matching rods 27 evenly arranged along the length direction of the connecting plate 26 are evenly and fixedly installed on the left side of the connecting plate 26.

[0037] See also Figure 2 , Figure 3 , Figure 5 and Figure 6 A plurality of arc grooves evenly arranged in the circumferential direction are provided on the outside of the rotating shaft 23 and on the right side of each filter plate 24. The grinding unit 4 includes an arc slider 41 slidably installed in the arc groove. A return spring 42 is connected between the arc slider 41 and the rotating shaft 23. A slide plate 43 is slidably installed on the upper end of the arc slider 41. A plurality of grinding rods 44 are fixedly installed on the right end of the slide plate 43, and the grinding rods 44 and their corresponding matching rods 27 are arranged alternately; a corrugated groove 231 is provided on the inner wall of the arc groove on the rotating shaft 23 near the center of the rotating shaft 23, and a toggle rod 45 is fixedly installed at the lower end of the slide plate 43. The lower end of the toggle rod 45 slides left and right through the arc slider 41 and is slidably installed in the corrugated groove 231.

[0038] The grinding unit 4 is used to grind and crush impurities such as rock cuttings; specifically, when the rotating shaft 23 rotates, the rotating shaft 23 drives the slide plate 43 to rotate through the arc-shaped slider 41, and the slide plate 43 drives the corresponding multiple grinding rods 44 to rotate. Since the distance between two adjacent matching rods 27 corresponds to the size of the filter holes of the corresponding filter plate 24, and the multiple grinding rods 44 and the corresponding multiple matching rods 27 are arranged in an interlaced manner, when the slide plate 43 drives the corresponding multiple grinding rods 44 to rotate, the multiple grinding rods 44 can drive the filtered rock cuttings and other impurities to rotate. When the grinding rods 44 drive the rock cuttings and other impurities to rotate to the corresponding positions of the matching rods 27, if the size of the rock cuttings and other impurities is larger than the distance between the two adjacent matching rods 27, then the rock cuttings and other impurities will be stuck on the side opposite to the rotation direction of the two adjacent matching rods 27 and the grinding rod 44, so that the rock cuttings and other impurities block the rotation of the grinding rod 44, so that the grinding rod 44 is driven by the slide plate 43. The movable arc-shaped slider 41 moves along the arc-shaped groove in the direction opposite to the rotation direction of the rotating shaft 23 and compresses the return spring 42. At the same time, under the cooperation of the corrugated groove 231 and the toggle rod 45, the toggle rod 45 drives the slide plate 43 to move back and forth, and then the slide plate 43 drives the grinding rod 44 to move back and forth, so that the grinding rod 44 and the matching rod 27 cooperate to grind and crush impurities such as rock chips. When the size of impurities such as rock chips is ground to be smaller than the distance between two adjacent matching rods 27, the impurities such as rock chips can pass between the two adjacent matching rods 27, and the ground impurities such as rock chips can pass through the corresponding filter plate 24, so that impurities such as rock chips no longer block the rotation of the grinding rod 44, and then the arc-shaped slider 41 drives the grinding rod 44 to return to the initial position relative to the rotating shaft 23 through the slide plate 43 under the action of the return spring 42, and the rotating shaft 23 can finally drive the grinding rod 44 to continue to rotate through the arc-shaped slider 41.

[0039] See also Figure 2 , Figure 3 and Figure 7 The dredging unit 3 includes a plurality of circumferentially evenly arranged fixed plates 31 fixedly mounted on the outside of the rotating shaft 23 and located on the left side of the filter plate 24. A plurality of dredging rods 33 evenly arranged along the length direction are installed on the right side of the fixed plate 31 for sliding left and right through a top spring 32. The right end of the dredging rod 33 is set as a truncated cone structure, and the dredging rod 33 corresponds to the filter holes of the filter plate 24 on its right side one by one. Two symmetrically arranged impact mechanisms 34 are fixedly mounted on the fixed plate 31, and the impact mechanism 34 is used to impact the dredging rod 33 to the right.

[0040] The dredging unit 3 is used to dredge the filter plate 24; specifically, when the rotating shaft 23 rotates, the rotating shaft 23 drives the dredging rod 33 to rotate synchronously through the fixed plate 31, and when the dredging rod 33 rotates to the corresponding position of the filter hole of the filter plate 24, the dredging rod 33 can be inserted into the filter hole of the filter plate 24 under the action of the extension spring 32, so that the dredging rod 33 dredges the filter holes of the filter plate 24, and the right end of the dredging rod 33 is set to a truncated cone structure, so that the dredging rod 33 can move out of the filter holes of the filter plate 24 and compress the extension spring 32, and the impact mechanism 34 can continuously impact the dredging rod 33, ensuring that the dredging rod 33 can thoroughly dredge the filter holes of the filter plate 24.

[0041] See also Figure 2 , Figure 7-Figure 9 The impact mechanism 34 includes a square tube 341 fixedly mounted on the fixed plate 31. A synchronous rod 342 is installed on the upper and lower inner walls of the square tube 341 on the side away from the fixed plate 31 to slide left and right. The synchronous rod 342 is initially located at the right limit position. An electric slider assembly 343 is installed between the end of the synchronous rod 342 away from the fixed plate 31 and the square tube 341. A square block 344 is fixedly installed on the side of the synchronous rod 342 close to the fixed plate 31 and at a position corresponding to the dredging rod 33. The square block 344 A shift plate 346 is slidably installed on the side close to the rotating shaft 23 through a connecting spring 345; a lifting column 347 is fixedly installed on the side of the shift plate 346 close to the fixed plate 31, and a plurality of lifting blocks 348 evenly arranged up and down are fixedly installed on the left end of the inner wall of the square cylinder 341 close to the fixed plate 31, and the installation positions of the lifting blocks 348 and the installation positions of the lifting columns 347 correspond one to one, and the right end of the lifting block 348 away from the rotating shaft 23 is provided with an inclined surface for driving the lifting column 347 to move upward.

[0042] See also Figure 7-Figure 9 The right side of the end of the dial plate 346 close to the rotating shaft 23 is set as an inclined surface, and the position of the left inner wall of the square cylinder 341 corresponding to the dredging rod 33 is installed with an impact rod 3412 for sliding left and right through the impact spring 3411, and the right end of the impact rod 3412 slides left and right through the right side wall of the square cylinder 341 and is fixedly installed with a fitting plate 3413, and the left end of the impact rod 3412 away from the rotating shaft 23 is fixedly installed with a matching plate 3414, and the right side of the matching plate 3414 is initially arranged in fit with the corresponding left side of the dial plate 346; the position of the dredging rod 33 corresponding to the fitting plate 3413 is fixedly installed with a round rod 331, and the right side of the fitting plate 3413 is arranged in fit with the corresponding round rod 331.

[0043] It should be noted that the electric slider assembly 343 in the present invention includes a slide rail and an electric slider, wherein the slide rail is fixedly connected to the square tube 341, and the electric slider is fixedly connected to the synchronization rod 342, and the synchronization rod 342 is driven to move back and forth by starting the electric slider.

[0044] The impact mechanism 34 is used to impact the dredging rod 33; specifically, the electric slider assembly 343 is started to drive the synchronization rod 342 to move back and forth left and right. When the synchronization rod 342 moves from right to left, the synchronization rod 342 drives the dial plate 346 to move left through the square block 344, so that the dial plate 346 drives the impact rod 3412 to move left through the matching plate 3414 and compresses the impact spring 3411. When the impact rod 3412 moves to the left to the corresponding position of the lifting block 348, the inclined surface of the lifting block 348 can cooperate with the lifting column 347 to drive the dial plate 346 to move away from the rotating shaft 23, so that the impact rod 3412 drives the fitting plate 3413 to pop out to the right under the action of the impact spring 3411 and impact the round rod 331, thereby realizing the rightward impact on the dredging rod 33, ensuring that the dredging rod 33 can dredge impurities such as rock debris stuck in the filter holes of the filter plate 24.

[0045] When the electric slider assembly 343 drives the synchronization rod 342 to move from left to right, the synchronization rod 342 drives the dial plate 346 to move to the right through the square block 344. When the dial plate 346 moves to the corresponding position of the matching plate 3414, the inclined surface of the dial plate 346 can cooperate with the matching plate 3414 to drive the dial plate 346 to move away from the rotating shaft 23 and compress the connecting spring 345. When the dial plate 346 moves to the right side of the matching plate 3414, the dial plate 346 moves toward the direction close to the rotating shaft 23 under the action of the connecting spring 345. Then, when the synchronization rod 342 moves from right to left again, the dial plate 346 can push the matching plate 3414 to the left again, so that the dredging rod 33 can continue to impact to the right under the action of the fitting plate 3413.

[0046] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A downhole gyro inclinometer auxiliary device, comprising a rotary valve (1), a multi-stage filter unit (2) is installed on the right side of the rotary valve (1), and grinding units (4) are installed on the multi-stage filter unit (2) and are evenly arranged in the circumferential direction from left to right, characterized in that: A dredging unit (3) is installed on the multi-stage filtering unit (2) and is located on the left side of the grinding unit (4); The multi-stage filtering unit (2) comprises a cylinder (21) fixedly mounted on the right end of the rotary valve (1), a rotating mechanism (22) being mounted on the left side of the cylinder (21), a rotating shaft (23) being mounted on the right end of the rotating mechanism (22), a plurality of filter plates (24) being evenly arranged from left to right being fixedly mounted on the right side of the cylinder (21), the filter plates (24) being rotatably connected to the rotating shaft (23), the filter holes of the filter plates (24) decreasing in size from right to left, and a stirring mechanism (25) for stirring drilling fluid being mounted on the right end of the outer side of the rotating shaft (23); A plurality of connecting plates (26) are fixedly installed inside the cylinder (21) and on the right side of each filter plate (24), and a plurality of matching rods (27) are fixedly installed on the left side of the connecting plate (26) and are evenly arranged along the length direction thereof; The dredging unit (3) comprises a plurality of circumferentially evenly arranged fixed plates (31) fixedly mounted on the outside of the rotating shaft (23) and located on the left side of the filter plate (24); a plurality of dredging rods (33) evenly arranged along the length direction thereof are mounted on the right side of the fixed plate (31) for sliding left and right via a top extension spring (32); the right end of the dredging rod (33) is configured as a truncated cone structure; the dredging rod (33) corresponds to the filter hole of the filter plate (24) on the right side thereof in a one-to-one manner; two symmetrically arranged impact mechanisms (34) are fixedly mounted on the fixed plate (31); the impact mechanisms (34) are used to impact the dredging rod (33) to the right.

2. The downhole gyro inclinometer auxiliary device according to claim 1, characterized in that: The impact mechanism (34) comprises a square tube (341) fixedly mounted on the fixed plate (31); a synchronous rod (342) is slidably mounted on the upper and lower inner walls of the square tube (341) on the side away from the fixed plate (31); and the synchronous rod (342) is initially located at the right limit position; an electric slider assembly (343) is installed between the end of the synchronous rod (342) away from the fixed plate (31) and the square tube (341); a square block (344) is fixedly mounted on the side of the synchronous rod (342) close to the fixed plate (31) and at a position corresponding to the dredging rod (33); and a shifting plate (346) is slidably mounted on the side of the square block (344) close to the rotating shaft (23) via a connecting spring (345).

3. The downhole gyro inclinometer auxiliary device according to claim 2, characterized in that: A lifting column (347) is fixedly installed on one side of the shift plate (346) close to the fixed plate (31), and a plurality of lifting blocks (348) are fixedly installed on the left end of the inner wall of the square tube (341) close to the fixed plate (31) and are evenly arranged up and down, and the installation positions of the lifting blocks (348) correspond to the installation positions of the lifting columns (347) one by one, and the right ends of the lifting blocks (348) away from the rotating shaft (23) are provided with inclined surfaces for driving the lifting columns (347) to move upward.

4. The downhole gyro inclinometer auxiliary device according to claim 2, characterized in that: The right side of one end of the shift plate (346) close to the rotating shaft (23) is arranged as an inclined surface, and the position of the left inner wall of the square tube (341) corresponding to the dredging rod (33) is slidably mounted with an impact rod (3412) via an impact spring (3411), and the right end of the impact rod (3412) slides left and right through the right side wall of the square tube (341) and is fixedly mounted with a fitting plate (3413), and the left end of the impact rod (3412) away from the rotating shaft (23) is fixedly mounted with a matching plate (3414), and the right side of the matching plate (3414) is initially arranged in a fitting relationship with the left side of the corresponding shift plate (346).

5. The downhole gyro inclinometer auxiliary device according to claim 4, characterized in that: The positions of the dredging rods (33) corresponding to the bonding plates (3413) are fixedly mounted with round rods (331), and the right side of the bonding plates (3413) and the corresponding round rods (331) are arranged in a bonding manner.

6. The downhole gyro inclinometer auxiliary device according to claim 1, characterized in that: The stirring mechanism (25) comprises a plurality of circumferentially evenly arranged square rods (251) slidably mounted on the outside of the rotating shaft (23); a clamping spring (252) is connected between the square rod (251) and the rotating shaft (23); and a plurality of stirring plates (253) evenly arranged along the length direction of the square rod (251) are fixedly mounted on the right side of the square rod (251).

7. The downhole gyro inclinometer auxiliary device according to claim 6, characterized in that: One end of the square rod (251) away from the rotating shaft (23) is arranged as an arc-shaped structure, a circular ring (211) is fixedly mounted on the inner wall of the cylinder (21) at a position corresponding to the square rod (251), and the inner wall of the circular ring (211) is arranged as a wave-shaped structure for cooperating with the arc-shaped structure of the square rod (251) to drive the square rod (251) to move back and forth.

8. The downhole gyro inclinometer auxiliary device according to claim 1, characterized in that: A plurality of arc grooves evenly arranged in the circumferential direction are provided outside the rotating shaft (23) and on the right side of each filter plate (24); the grinding unit (4) comprises an arc slider (41) slidably mounted in the arc groove; a return spring (42) is connected between the arc slider (41) and the rotating shaft (23); a slide plate (43) is slidably mounted on the upper end of the arc slider (41); a plurality of grinding rods (44) are fixedly mounted on the right end of the slide plate (43); and the grinding rods (44) and their corresponding matching rods (27) are arranged in a staggered manner.

9. The downhole gyro inclinometer auxiliary device according to claim 8, characterized in that: The inner wall of the arc groove on the rotating shaft (23) close to the center of the rotating shaft (23) is provided with a corrugated groove (231); a toggle rod (45) is fixedly mounted on the lower end of the slide plate (43); the lower end of the toggle rod (45) slides left and right through the arc slide block (41) and is slidably mounted in the corrugated groove (231).

10. The downhole gyro inclinometer auxiliary device according to claim 1, characterized in that: The rotating mechanism (22) comprises a sealing cylinder (221) distributed on the left side inside the cylinder (21); the outer side of the sealing cylinder (221) is fixedly connected to the cylinder (21) via a plurality of circumferentially evenly arranged fixing rods (222); the right end of the sealing cylinder (221) is rotatably connected to the left end of the rotating shaft (23); a motor (223) is fixedly mounted on the left inner wall of the sealing cylinder (221); and the output shaft of the motor (223) is fixedly connected to the rotating shaft (23).

Images