Special device for cleaning mud cake on inner wall of drill rod

Abstract

The invention relates to the technical field of oil and gas drilling equipment, in particular to a special device for cleaning mud cakes on the inner wall of a drill pipe, which comprises a base, a reel pipe sleeve is fixed at the upper end of the base through a fixing seat, a fixing support is arranged at the upper end of the base and right faces one end of the reel pipe sleeve, and a fixing clamp is hinged to the upper end of the fixing support. A fixing buckle is arranged at the side end of the fixing support and connected with the fixing clamp, and a cleaning device is arranged between the fixing support and the fixing clamp; when the drill rod is cleaned, if the inner diameter of the drill rod changes, under the joint transmission of the first transmission rod and the second transmission rod, the opening amplitude of the mud breaking cone is adjusted to adapt to the inner diameter of the drill rod at the moment, and when mud cakes are cleaned, the spring telescopic rods provide road holding force of the driving wheels to the inner wall of the drill rod; and the driving wheel rotates to enable the cleaning exploring tube to walk in the drill rods with different inner diameters.

Description

Technical Field

[0001] This application relates to the technical field of oil and gas drilling equipment, and particularly to a special device for cleaning the mud skin on the inner wall of drill pipes. Background Art

[0002] Oil and gas drilling equipment is used to drill and extract oil and gas resources underground. The oil and gas drilling equipment mainly includes a drilling rig, a drill bit, a drill string, a drilling fluid system, and well control equipment, among which the drill pipe is the main part of the drill string. During the drilling process, impurities are likely to accumulate inside the drill pipe, leading to an increase in flow resistance, risks of corrosion and wear, and tool blockage. During the drilling process, the inner wall of the drill pipe is easily adhered with mud skin. Traditional cleaning methods use manual knocking or high-pressure water gun flushing, which have problems such as low efficiency, incomplete cleaning, and easy damage to the inner wall of the drill pipe.

[0003] Existing mechanical cleaning devices can clean the inner wall of drill pipes. For example, a special device for cleaning the mud skin on the inner wall of drill pipes with the publication number of CN207111045U includes a hole diameter exploration pipe and a mud scraper. The mud scraper consists of a reaction torque assembly and a cutting assembly connected to each other. The reaction torque assembly includes a reaction torque motor, a lead screw mechanism, a sliding cone, and a reaction torque contact. The output shaft of the reaction torque motor drives the lead screw mechanism, and the lead screw mechanism drives the sliding cone to move up and down. During the downward movement of the sliding cone, it touches and presses the reaction torque contact, and the reaction torque contact touches and presses the inner wall of the wireline coring drill pipe; the cutting assembly includes a cutting motor, a cutting motor output shaft, a tool holder, and a cutter. The cutting motor is connected to the tool holder, and the cutter is installed on the tool holder. When the cutting motor rotates, the cutter opens to work, and when the cutting motor stops rotating, the cutter closes. The above-mentioned existing technology continuously measures the inner diameter of the drill pipe during the lowering process in the well to determine the position and thickness of the mud skin, and starts the reaction torque assembly and the cutting assembly of the mud scraper in sequence during the lifting process, and cooperates with each other to complete the mud skin cleaning work, so as to keep the inner wall of the drill pipe clean and avoid the problem of core taking obstruction caused by mud skin formation.

[0004] However, the above-mentioned existing technology still has some defects when cleaning the mud skin on the inner wall of the drill pipe: 1. When the above-mentioned existing technology is working, the hole diameter exploration pipe and the mud scraper are located inside the wireline coring drill pipe, and a winch provides power for the lowering and lifting of the hole diameter exploration pipe and the mud scraper. However, during the lowering process, if the hole diameter exploration pipe does not match the inner diameter of the drill pipe, it will get stuck or the hole diameter exploration pipe will collide inside the drill pipe, affecting the mud removal effect.

[0005] 2. When the above-mentioned existing technology is cleaning the mud skin, the cutting motor is turned on, and the cutter overcomes the magnetic attraction under the action of centrifugal force and opens. The serrated cutting edge contacts the inner wall of the wireline coring drill pipe, and continuous rotary cutting is performed to achieve the purpose of cleaning the mud skin. However, in actual use, if encountering stubborn mud skin with a hard texture, since the cutting force is provided by centrifugal force, it may not be able to remove the stubborn mud skin due to insufficient cutting force, and there is still room for improvement.

[0006] Based on this, under the statement of the above viewpoints, there is still room for improvement in the existing technologies for cleaning the mud skin on the inner wall of the drill pipe. Summary of the Invention

[0007] To solve the above technical problems, the present application provides a special device for cleaning the mud skin on the inner wall of the drill pipe, adopting the following technical solutions:

[0008] A special device for cleaning the mud skin on the inner wall of the drill pipe includes a base. A reel sleeve is fixed to the upper end of the base through a fixing seat. A fixing bracket is arranged at the upper end of the base, and the fixing bracket is opposite to one end of the reel sleeve. A fixing clamp is hinged to the upper end of the fixing bracket, and a fixing buckle is arranged on the side end of the fixing bracket to connect the fixing clamp. A cleaning device is arranged between the fixing bracket and the fixing clamp.

[0009] Preferably, the cleaning device includes a cleaning probe clamped by the fixing bracket and the fixing clamp. The cleaning probe includes a probe body and a collection cover sleeved outside the probe body, and the inside of the collection cover is hollow. The cleaning probe further includes a rotating ring rotatably installed outside the probe body. The rotating ring is located at one end of the collection cover away from the reel sleeve, and the rotating ring is rotatably connected to the collection cover. A plurality of connecting hoses communicating with the inside of the collection cover are circumferentially and evenly arranged at one end of the rotating ring away from the collection cover. One end of the connecting hose away from the collection cover is connected to an attracting cover, and a mud-breaking component is arranged at one end of the attracting cover away from the rotating ring.

[0010] Preferably, the mud-breaking component includes a mud-breaking cone arranged at one end of the attracting cover away from the rotating ring. A plurality of spiral mud-cutting knives are arranged on the outer side of one end of the mud-breaking cone away from the attracting cover, and a plurality of mud-scraping knives are arranged on the outer side of one end of the mud-breaking cone facing the attracting cover.

[0011] Preferably, a driving device is arranged inside the probe body. The driving device includes a driving motor arranged at one end of the probe body facing the reel sleeve inside the probe body. The output end of the driving motor is connected to a transmission shaft, and the transmission shaft is rotatably connected to the other end of the probe body away from the driving motor. The driving device further includes an adjusting component arranged at the other end of the transmission shaft away from the driving motor.

[0012] Preferably, a moving device is arranged at one end of the probe body facing the reel sleeve. The moving device includes mounting holes circumferentially and evenly opened at one end of the probe body facing the reel sleeve. A first connecting rod is rotatably installed at one end of the mounting hole away from the driving motor, and a wheel frame is hinged to the first connecting rod.

[0013] Preferably, a second connecting rod is rotatably installed at one end of the wheel frame away from the first connecting rod, and a driving wheel is hinged to the second connecting rod. A spring telescopic rod is hinged at the other end of the mounting hole, and the other end of the spring telescopic rod is hinged to the wheel frame.

[0014] Preferably, telescopic sliders are evenly arranged circumferentially at one end of the probe body away from the coiling tube sleeve, and guide wheels are installed at the ends of the telescopic sliders away from the probe body.

[0015] Preferably, a transmission assembly is arranged on the wheel frame. The transmission assembly includes a first pulley installed on the first connecting rod, a second pulley installed on the second connecting rod. The first pulley and the second pulley are driven by a transmission belt. A worm thread is arranged on the transmission shaft, and a transmission worm gear meshing with the worm thread is installed on the first connecting rod.

[0016] Preferably, a winding device is arranged in the coiling tube sleeve. The winding device includes a tube winding column rotatably installed in the coiling tube sleeve. A rotating handle is arranged at one end of the tube winding column, a locking block is arranged at the side end of the tube winding column, a connecting tube is wound on the tube winding column, and one end of the connecting tube is fixed on the locking block and the other end extends out of the coiling tube sleeve.

[0017] Preferably, a flushing device is arranged at one end of the probe body facing the coiling tube sleeve. The flushing device includes a flushing ring arranged at one end of the probe body facing the coiling tube sleeve, and a plurality of flushing heads are evenly arranged circumferentially on the outer side of the flushing ring.

[0018] Preferably, the collection cover is connected to the flushing ring through an air guide pipe. A water guide pipe and an air guide pipe are arranged in the connecting tube, and the water guide pipe and the air guide pipe are respectively connected to the flushing heads and the air guide pipe.

[0019] In summary, the present application includes at least one of the following beneficial technical effects:

[0020] 1. When cleaning the drill pipe in the present invention, if the inner diameter of the drill pipe changes, under the combined drive of the first transmission rod and the second transmission rod, the opening amplitude of the mud breaking cone is adjusted to adapt to the inner diameter of the drill pipe at this time. And when cleaning the mud skin, the spring telescopic rod provides the grip of the driving wheel on the inner wall of the drill pipe, and the driving wheel rotates to make the cleaning probe walk in the drill pipe with different inner diameters.

[0021] 2. When cleaning the mud skin in the present invention, the mud breaking cone rotates, and the spiral mud cutting knife breaks the mud skin on the inner wall of the drill pipe to make it loosen on the inner wall of the drill pipe, and then the mud scraping knife scrapes it off. The scraped mud blocks are attracted and collected into the collection cover by the attraction cover, so as to remove and collect the mud skin on the inner wall of the drill pipe.

[0022] 3. After cleaning the mud skin of the drill pipe in the present invention, the water in the liquid storage frame is pressed into the flushing ring through the water guide pipe and sprayed through the flushing heads to wash the residual mud blocks on the inner wall of the drill pipe, realizing the double cleaning of wet and dry on the inner wall of the drill pipe, ensuring the cleanliness and flatness of the inner wall of the drill pipe, preventing the mud blocks from quickly accumulating at the polluted part of the inner wall of the drill pipe, and enabling the inner wall of the drill pipe to maintain a long-term cleanliness after the cleaning is completed. Description of the Drawings

[0023] Figure 1 It is a schematic structural diagram of the present invention.

[0024] Figure 2 It is a schematic structural diagram of the cleaning device of the present invention.

[0025] Figure 3 It is a schematic structural diagram of the cleaning probe of the present invention.

[0026] Figure 4 It is a schematic structural diagram of the mud-breaking component of the present invention.

[0027] Figure 5 It is a schematic structural diagram of the driving device of the present invention.

[0028] Figure 6 It is a schematic structural diagram of the adjusting component of the present invention.

[0029] Figure 7 It is a schematic structural diagram of the moving device of the present invention.

[0030] Figure 8 It is a schematic structural diagram of the transmission component of the present invention.

[0031] Figure 9 It is a schematic structural diagram of the winding device of the present invention.

[0032] Figure 10 It is a schematic structural diagram of the flushing device of the present invention.

[0033] Figure 11 It is the present invention Figure 10 Schematic structural diagram of part A.

[0034] Description of reference numerals: 11, base; 12, fixed seat; 13, pipe coiling sleeve; 14, fixed bracket; 15, fixed clamp; 16, fixed buckle; 2, cleaning device; 21, cleaning probe; 211, probe body; 212, collection hood; 213, rotating ring; 22, connecting hose; 23, suction hood; 24, mud breaking assembly; 241, mud breaking cone; 242, spiral mud cutter; 243, mud scraping knife; 3, driving device; 31, driving motor; 32, transmission shaft; 33, adjusting assembly; 331, electric telescopic rod; 332, first fixing block; 333, first transmission rod; 334, second fixing block; 335, second transmission rod; 336, connecting pin; 337, first connecting block; 338, sliding groove; 339, second connecting block; 4, moving device; 41, mounting hole; 42, first connecting rod; 43, wheel frame; 44, second connecting rod; 45, driving wheel; 46, spring telescopic rod; 47, telescopic slider; 48, guide wheel; 5, transmission assembly; 51, first pulley; 52, second pulley; 53, transmission belt; 54, worm thread; 55, transmission worm gear; 6, winding device; 61, pipe winding column; 62, rotating handle; 63, locking block; 64, connecting pipe; 7, flushing device; 71, flushing ring; 72, flushing head; 73, air guiding pipe; 74, water guiding pipe; 75, air duct; 76, liquid storage frame; 77, driving pump. Detailed implementation mode

[0035] The following is a further detailed description of this application in conjunction with the attached Figures 1 to 11 drawings.

[0036] An embodiment of this application discloses a special device for cleaning the mud skin on the inner wall of a drill pipe, which can adjust the cleaning range according to the inner diameter of the drill pipe, and can automatically walk inside the drill pipe during use to scrape the mud skin on the inner wall of the drill pipe and flush the inner wall of the drill pipe.

[0037] Embodiment 1:

[0038] Refer to Figure 1 , a special device for cleaning the mud skin on the inner wall of a drill pipe, including a base 11. Before cleaning, the base 11 is moved to the side of the drill pipe to be cleaned. The upper end of the base 11 is fixed with a pipe coiling sleeve 13 through a fixed seat 12. A fixed bracket 14 is arranged at the upper end of the base 11, and one end of the fixed bracket 14 is directly opposite to the pipe coiling sleeve 13. A fixed clamp 15 is hinged to the upper end of the fixed bracket 14. A fixed buckle 16 is arranged on the side end of the fixed bracket 14 to connect the fixed clamp 15. The fixed clamp 15 and the fixed bracket 14 jointly fix the device for cleaning the mud skin.

[0039] Before use, the fixing clamp 15 and the fixing bracket 14 jointly fix the device for cleaning the mud skin, and lock it through the fixing buckle 16 to prevent it from being damaged by bumps during movement. When cleaning the mud skin, the fixing clamp 15 is opened through the fixing buckle 16, and the device for cleaning the mud skin can be taken out and placed in the drill rod.

[0040] refer to Figure 2 and Figure 3 , is a schematic diagram of the structure of the cleaning device 2 of the present invention. In order to remove and collect the mud skin on the inner wall of the drill rod, a cleaning device 2 is arranged between the fixed bracket 14 and the fixed clamp 15. The cleaning device 2 includes a cleaning probe 21 clamped by the fixed bracket 14 and the fixed clamp 15. When cleaning the mud skin on the inner wall of the drill rod, the cleaning probe 21 is placed in the drill rod. The cleaning probe 21 includes a probe body 211 and a collection cover 212 sleeved on the outer side of the probe body 211, and the collection cover 212 is hollow inside to facilitate the collection of the mud skin scraped off the drill rod. The cleaning probe 21 also includes a probe body 211 and a collection cover 212 sleeved on the outer side of the probe body 211. A movably installed rotating ring 213 is located at the end of the collecting cover 212 away from the reel sleeve 13, and the rotating ring 213 is rotatably connected to the collecting cover 212. A plurality of connecting hoses 22 connected to the inside of the collecting cover 212 are evenly arranged circumferentially at the end of the rotating ring 213 away from the collecting cover 212. The end of the connecting hose 22 away from the collecting cover 212 is connected to the suction cover 23. When the scraped mud skin is attracted, the mud skin enters the collecting cover 212 through the suction cover 23 and the connecting hose 22. The rotating ring 213 ensures that the suction cover 23 does not affect the collection of the scraped mud skin when it rotates.

[0041] When cleaning the mud skin, the scraped mud skin enters the collecting hood 212 through the suction hood 23 and the connecting hose 22 to prevent excessive accumulation of mud skin, which affects the cleaning quality and efficiency of the mud skin. After the cleaning is completed, the collecting hood 212 can be removed to deal with the mud skin collected in the collecting hood 212.

[0042] refer to Figure 4 , is a schematic diagram of the structure of the mud breaking component 24 of the present invention. In order to break and scrape off the mud skin on the inner wall of the drill pipe, the end of the suction cover 23 away from the rotating ring 213 is provided with a mud breaking component 24. The mud breaking component 24 includes a mud breaking cone 241 provided at the end of the suction cover 23 away from the rotating ring 213. When cleaning the mud skin, the mud breaking cone 241 is located in front of the moving direction of the cleaning probe 21. A plurality of spiral mud cutting knives 242 are provided on the outer side of the end of the mud breaking cone 241 away from the suction cover 23, which is used to break the mud skin on the inner wall of the drill pipe. A plurality of mud scraping knives 243 are provided on the outer side of the end of the mud breaking cone 241 facing the suction cover 23, which is used to scrape off the mud skin on the inner wall of the drill pipe broken by the spiral mud cutting knives 242, and then collect it by suction through the suction cover 23.

[0043] When cleaning the mud skin, the mud breaking cone 241 rotates, and the spiral mud cutter 242 breaks the mud skin on the inner wall of the drill pipe, loosening it on the inner wall of the drill pipe, and then the mud scraper 243 scrapes it off. The scraped mud blocks are sucked by the suction cover 23 and collected in the collection cover 212.

[0044] refer to Figure 5 , is a schematic diagram of the structure of the driving device 3 of the present invention. In order to drive the mud breaking cone 241 to rotate and remove the mud skin on the inner wall of the drill pipe, a driving device 3 is arranged inside the probe body 211. The driving device 3 includes a driving motor 31 arranged at one end of the probe body 211 facing the winding sleeve 13. The output end of the driving motor 31 is connected to a transmission shaft 32, and the transmission shaft 32 is rotatably connected to the end of the probe body 211 away from the driving motor 31. When cleaning the mud skin, the driving motor 31 drives the transmission shaft 32 to rotate. The driving device 3 also includes an adjusting component 33 arranged at the end of the transmission shaft 32 away from the driving motor 31. The adjusting component 33 is connected to the mud breaking cone 241. The rotation of the transmission shaft 32 drives the mud breaking cone 241 to rotate and crush and remove the mud skin on the inner wall of the drill pipe.

[0045] refer to Figure 6 , is a schematic diagram of the structure of the adjustment component 33 of the present invention. In order to adjust the opening amplitude of the mud breaking cone 241 according to the inner diameter of the drill pipe to adapt to the cleaning of the mud skin on the inner wall of the drill pipe with different diameters, the adjustment component 33 includes an electric telescopic rod 331 arranged at one end of the transmission shaft 32 away from the driving motor 31, and a plurality of first transmission rods 333 hinged by a first fixing block 332 are evenly arranged on the side end of the electric telescopic rod 331 in the circumferential direction, and a plurality of first transmission rods 333 hinged by a first fixing block 332 are evenly arranged on the output end of the electric telescopic rod 331 in the circumferential direction. The second transmission rod 335 is hinged, and the middle parts of the first transmission rod 333 and the second transmission rod 335 are hinged by a connecting pin 336. The end of the mud-breaking cone 241 facing away from the rotating ring 213 is provided with a first connecting block 337, and the first connecting block 337 is hinged to the upper end of the first transmission rod 333. The end of the mud-breaking cone 241 facing the rotating ring 213 is provided with a sliding groove 338, and the second connecting block 339 is slidably connected in the sliding groove 338, and the second connecting block 339 is hinged to the upper end of the second transmission rod 335.

[0046] When cleaning the drill rod, if the inner diameter of the drill rod changes, the electric telescopic rod 331 drives the second fixed block 334 to move, and then under the joint transmission of the first transmission rod 333 and the second transmission rod 335, the second connecting block 339 slides in the sliding groove 338 to adjust the opening amplitude of the mud breaking cone 241 to adapt to the inner diameter of the drill rod at this time.

[0047] Embodiment 2:

[0048] refer to Figure 7, on the basis of the first embodiment, in order to enable the cleaning probe 21 to automatically move inside the drill pipe so as to clean the mud skin on the inner wall of the drill pipe, a moving device 4 is provided at one end of the probe body 211 facing the coiling sleeve 13. The moving device 4 includes mounting holes 41 evenly opened circumferentially at one end of the probe body 211 facing the coiling sleeve 13. A first connecting rod 42 is rotatably mounted at the end of the mounting hole 41 facing away from the driving motor 31. A wheel frame 43 is hinged on the first connecting rod 42. A second connecting rod 44 is rotatably mounted at the end of the wheel frame 43 facing away from the first connecting rod 42. A driving wheel 45 is hinged on the second connecting rod 44. The driving wheel 45 can move as the wheel frame 43 rotates to adapt to different pipe diameters. The other end of the mounting hole 41 is hinged with a spring telescopic rod 46, and the other end of the spring telescopic rod 46 is hinged on the wheel frame 43. The spring telescopic rod 46 keeps the driving wheel 45 in contact with the inner wall of the drill pipe at all times, so that the driving wheel 45 has a downward pressure on the inner wall of the drill pipe, improving the grip of the driving wheel 45 on the inner wall of the drill pipe. So that when the driving wheel 45 rotates, it drives the cleaning probe 21 to move. At the end of the probe body 211 facing away from the coiling sleeve 13, telescopic sliders 47 are evenly arranged circumferentially. A guide wheel 48 is mounted at the end of the telescopic slider 47 facing away from the probe body 211. The telescopic slider 47 enables the guide wheel 48 to move in the inner wall of the drill pipe, preventing the cleaning probe 21 from coming into contact friction with the inner wall of the drill pipe to wear the cleaning probe 21.

[0049] When the cleaning probe 21 is placed into the drill pipe to clean the mud skin, the spring telescopic rod 46 provides the grip of the driving wheel 45 on the inner wall of the drill pipe, and the rotation of the driving wheel 45 makes the cleaning probe 21 move inside the drill pipe.

[0050] Reference Figure 8 , which is a schematic structural diagram of the transmission component 5 of the present invention. In order to make the driving wheel 45 rotate and drive the cleaning probe 21 to move inside the drill pipe, a transmission component 5 is provided on the wheel frame 43. The transmission component 5 includes a first pulley 51 mounted on the first connecting rod 42, a second pulley 52 mounted on the second connecting rod 44. The first pulley 51 and the second pulley 52 are driven by a transmission belt 53. When the first connecting rod 42 rotates, the second connecting rod 44 is driven to rotate through the first pulley 51, the second pulley 52 and the transmission belt 53. A worm thread 54 is provided on the transmission shaft 32, and a transmission worm gear 55 meshing with the worm thread 54 is mounted on the first connecting rod 42. When the transmission shaft 32 rotates, the transmission worm gear 55 is driven to rotate through the worm thread 54, and then the first connecting rod 42 is driven to rotate.

[0051] The driving motor 31 drives the transmission shaft 32 to rotate. Under the meshing of the worm thread 54 and the transmission worm gear 55, the first connecting rod 42 is driven to rotate. At this time, the first pulley 51 rotates, and the first pulley 51 drives the second pulley 52 to rotate through the transmission belt 53, and then the second connecting rod 44 is driven to rotate so as to make the driving wheel 45 rotate.

[0052] Embodiment 3:

[0053] Reference Figure 9 Based on Embodiment 1 and Embodiment 2, after scraping the mud skin on the inner wall of the drill pipe, in order to further wash the residual mud blocks on the inner wall of the drill pipe, and then retract the device. A winding device 6 is arranged in the pipe winding sleeve 13. The winding device 6 includes a pipe winding column 61 rotatably installed in the pipe winding sleeve 13. One end of the pipe winding column 61 is provided with a rotating handle 62, a locking block 63 is arranged on the side end of the pipe winding column 61, a connecting pipe 64 is wound around the pipe winding column 61, and one end of the connecting pipe 64 is fixed on the locking block 63 and the other end extends out of the pipe winding sleeve 13.

[0054] When recycling the cleaning probe 21, rotate the pipe winding column 61 through the rotating handle 62 to wind the connecting pipe 64 around the pipe winding column 61 to recycle the cleaning probe 21.

[0055] Reference Figure 10 and Figure 11 is a schematic structural diagram of the flushing device 7 of the present invention. In order to extract the air in the collection cover 212 to make the inside of the collection cover 212 in negative pressure, so as to attract the scraped mud blocks through the suction cover 23 and flush the residual mud blocks on the inner wall of the drill pipe through the connecting pipe 64 with water. A flushing device 7 is arranged at one end of the probe body 211 facing the pipe winding sleeve 13. The flushing device 7 includes a flushing ring 71 arranged at one end of the probe body 211 facing the pipe winding sleeve 13. A plurality of flushing heads 72 are evenly arranged circumferentially on the outer side of the flushing ring 71. The collection cover 212 is connected to the flushing ring 71 through an air guide pipe 73. A water guide pipe 74 and an air guide pipe 75 are arranged in the connecting pipe 64, and the water guide pipe 74 and the air guide pipe 75 are respectively connected to the flushing heads 72 and the air guide pipe 73. A liquid storage frame 76 is arranged at the upper end of the base 11. A driving pump 77 is installed between the liquid storage frame 76 and the fixed seat 12, and the water guide pipe 74 and the air guide pipe 75 in the connecting pipe 64 are introduced into the liquid storage frame 76 through the driving pump 77.

[0056] When cleaning the mud skin, the driving pump 77 extracts the air in the collection cover 212 to make the inside of the collection cover 212 in negative pressure, so as to attract and collect the mud blocks. At the same time, the air extracted from the inside of the collection cover 212 is sequentially sent into the liquid storage frame 76 through the air guide pipe 73 and the air guide pipe 75, increasing the air pressure in the liquid storage frame 76, and pressing the water in the liquid storage frame 76 into the flushing ring 71 through the water guide pipe 74 and spraying it through the flushing heads 72 to flush the residual mud blocks on the inner wall of the drill pipe.

[0057] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A special device for cleaning the mud skin on the inner wall of a drill pipe, comprising a base (11). A reel pipe sleeve (13) is fixed to the upper end of the base (11) through a fixing seat (12). A fixing bracket (14) is arranged at the upper end of the base (11), and one end of the fixing bracket (14) faces the reel pipe sleeve (13). A fixing clamp (15) is hinged to the upper end of the fixing bracket (14), and a fixing buckle (16) is arranged at the side end of the fixing bracket (14) to connect the fixing clamp (15). It is characterized in that: A cleaning device (2) is provided between the fixing bracket (14) and the fixing clamp (15); The cleaning device (2) comprises a cleaning probe (21) clamped by a fixing bracket (14) and a fixing clamp (15); the cleaning probe (21) comprises a probe body (211) and a collecting cover (212) sleeved on the outside of the probe body (211); the collecting cover (212) is hollow inside; the cleaning probe (21) further comprises a rotating ring (213) rotatably mounted on the outside of the probe body (211); the rotating ring (213) is located on the collecting cover (212). A rotating ring (213) is rotatably connected to a collecting hood (212) and is away from one end of the reel sleeve (13). A plurality of connecting hoses (22) communicating with the interior of the collecting hood (212) are evenly arranged circumferentially on one end of the rotating ring (213) away from the collecting hood (212). One end of the connecting hose (22) away from the collecting hood (212) is connected to a suction hood (23). A mud breaking assembly (24) is arranged on one end of the suction hood (23) away from the rotating ring (213).

2. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 1, characterized in that: The mud-breaking assembly (24) comprises a mud-breaking cone (241) arranged at one end of the suction cover (23) away from the rotating ring (213); a plurality of spiral mud cutters (242) are arranged on the outer side of the end of the mud-breaking cone (241) away from the suction cover (23); and a plurality of mud scrapers (243) are arranged on the outer side of the end of the mud-breaking cone (241) facing the suction cover (23).

3. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 1, characterized in that: A driving device (3) is arranged inside the probe body (211), and the driving device (3) comprises a driving motor (31) arranged at one end of the probe body (211) facing the winding sleeve (13), the output end of the driving motor (31) is connected to a transmission shaft (32), and the transmission shaft (32) is rotatably connected to the end of the probe body (211) away from the driving motor (31), and the driving device (3) also comprises an adjusting component (33) arranged at the end of the transmission shaft (32) away from the driving motor (31).

4. The special device for cleaning the mud skin on the inner wall of a drill pipe according to claim 3, characterized in that: A moving device (4) is provided at one end of the probe body (211) facing the pipe reel sleeve (13), and the moving device (4) comprises mounting holes (41) uniformly arranged in the circumferential direction at one end of the probe body (211) facing the pipe reel sleeve (13), and a first connecting rod (42) is rotatably mounted at one end of the mounting hole (41) away from the drive motor (31), and a wheel frame (43) is hingedly connected to the first connecting rod (42).

5. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 4, characterized in that: A second connecting rod (44) is rotatably mounted on one end of the wheel frame (43) away from the first connecting rod (42), a driving wheel (45) is hinged on the second connecting rod (44), a spring telescopic rod (46) is hinged on the other end of the mounting hole (41), and the other end of the spring telescopic rod (46) is hinged on the wheel frame (43).

6. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 1, wherein: Telescopic sliders (47) are evenly arranged circumferentially at one end of the probe tube body (211) away from the tube reel sleeve (13), and a guide wheel (48) is installed at one end of the telescopic slider (47) away from the probe tube body (211).

7. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 5, characterized in that: A transmission assembly (5) is provided on the wheel carrier (43). The transmission assembly (5) includes a first pulley (51) mounted on a first connecting rod (42), a second pulley (52) mounted on the second connecting rod (44). The first pulley (51) and the second pulley (52) are driven by a transmission belt (53). A worm thread (54) is provided on the transmission shaft (32), and a transmission worm gear (55) meshing with the worm thread (54) is mounted on the first connecting rod (42).

8. The special device for cleaning the mud skin on the inner wall of the drill pipe according to claim 1, characterized in that: A winding device (6) is provided in the coiling tube sleeve (13). The winding device (6) includes a tube winding column (61) rotatably mounted in the coiling tube sleeve (13). One end of the tube winding column (61) is provided with a rotating handle (62). A locking block (63) is provided on the side of the tube winding column (61). A connecting tube (64) is wound around the tube winding column (61), and one end of the connecting tube (64) is fixed to the locking block (63), and the other end extends out of the coiling tube sleeve (13).

9. The special device for cleaning the mud skin on the inner wall of a drill pipe according to claim 1, wherein: A flushing device (7) is provided at one end of the probe body (211) facing the coiling tube sleeve (13). The flushing device (7) includes a flushing ring (71) provided at one end of the probe body (211) facing the coiling tube sleeve (13). A plurality of flushing heads (72) are evenly arranged circumferentially on the outer side of the flushing ring (71).

10. A special device for cleaning the mud skin on the inner wall of a drill pipe according to claim 9, characterized in that: The collection cover (212) is connected to the flushing ring (71) through an air guide tube (73). A water guide tube (74) and an air guide tube (75) are provided in the connecting tube (64), and the water guide tube (74) and the air guide tube (75) are respectively connected to the flushing heads (72) and the air guide tube (73).

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