A sand-proof and anti-blocking gas-liquid dual-purpose screw drilling tool

Abstract

This invention discloses a sand-proof and anti-clogging gas-liquid dual-purpose screw drill bit, applied in the field of power drilling technology. The invention includes a mud tank, with a mud-passing assembly on the right side of the mud tank and a mud pump on the right side of the mud-passing assembly. The discharge port of the mud pump is movably connected to a drill rod structure. The mud tank stores the mud to be used. A first rotating shaft, in conjunction with a sliding plate, facilitates mud flow and filters large sand particles and impurities when working with the mesh screen. The drill rod structure works with the drill bit. The mud-passing shell ensures a relatively sealed working environment, preventing external impurities from entering during operation. The filtered mud then falls into a supply tank for later use. A cleaning pipe draws external cleaning water through a branch pipe after operation and rinses the mesh screen. Simultaneously, an electric telescopic cylinder lifts the sliding plate along the rotating shaft.

Description

Technical Field

[0001] This invention belongs to the field of power drilling tool technology, and specifically relates to a dual-purpose gas-liquid screw drill tool that is anti-sand and anti-clogging. Background Technology

[0002] Based on the usage scenarios and required equipment of screw drills, various situations may be encountered when drilling operations are carried out using screw drills, but not limited to the one mentioned below. When the mud pumped out by the mud pump flows through the bypass valve into the motor, a certain pressure difference is formed between the inlet and outlet of the motor, which drives the rotor to rotate around the axis of the stator and transmits the speed and torque to the drill bit through the universal joint and the drive shaft.

[0003] Chinese Patent CN104695853B discloses a screw drill motor and a screw drill tool incorporating the motor. The screw drill motor includes a stator metal housing, a rubber bushing, and a rotor. The inner cavity of the stator metal housing includes a central enlarged diameter portion and threaded connection portions located at both ends of the central enlarged diameter portion, with the diameter of the threaded connection portions being smaller than the diameter of the central enlarged diameter portion. The rubber bushing is disposed within the central enlarged diameter portion of the stator metal housing, and the rotor is installed in the inner hole of the rubber bushing, engaging with the rubber bushing to form a sealed cavity. This invention can be widely applied in drilling operations for oil and gas exploration and development. By enlarging the diameter of the central portion of the inner cavity of the stator metal housing of the screw drill motor, this invention significantly increases the drilling fluid flow area of ​​the screw drill motor, resulting in a screw drill motor with high output torque, stable torque output, and high conversion efficiency, thereby effectively improving drilling capacity and efficiency in the oil and gas exploration and development drilling process.

[0004] Existing screw drills continuously draw mud from the mud pit and then transport it to the wellbore through the drill pipe. As a result, impurities or large-diameter particles in the mud pit can easily cause blockages during operation, thus affecting the operation of the drill.

[0005] Based on the above-mentioned situation, we found that existing screw drills have difficulty avoiding the above problems. Therefore, we propose a dual-purpose screw drill that is sand-proof, anti-clogging, and gas-liquid with an additional filtration process and can be self-cleaned after operation. Summary of the Invention

[0006] The purpose of this invention is to address an existing anti-sand and anti-clogging gas-liquid dual-purpose screw drill bit, which has the advantages of having an additional filtration process and being able to self-clean after operation.

[0007] The above-mentioned technical objective of the present invention is achieved through the following technical solution: a sand-proof and anti-clogging gas-liquid dual-purpose screw drill, including a mud tank, a mud-passing component is provided on the right side of the mud tank, a mud pump is provided on the right side of the mud-passing component, and a drill rod structure is movably connected to the discharge port of the mud pump.

[0008] The slurry passing assembly includes a slurry passing shell. A first rotating shaft is bolted to the left side of the inner wall of the slurry passing shell. A sliding plate is rotatably connected to the right side of the first rotating shaft. A matching mesh plate is provided on the top of the sliding plate. A cleaning pipe is bolted to the inner side of the sliding plate. A branch pipe is bolted to the bottom of the inner wall of the slurry passing shell. The outer side of the branch pipe is bolted to the cleaning pipe. A cleaning water source is connected to the bottom of the branch pipe. A supply pool is provided on the right side of the bottom of the slurry passing shell.

[0009] An electric telescopic cylinder is bolted to the bottom of the inner wall of the slurry conveying shell. The top of the electric telescopic cylinder is used in conjunction with the sliding plate. An inlet pipe is bolted to the top of the slurry conveying shell. A coarse material pump is bolted to one side of the inlet pipe from the slurry conveying shell. The coarse material pump is located at the top of the mud tank. A reuse tank is bolted to the left side of the slurry conveying shell.

[0010] The above technical solution involves setting up a mud pit to store the mud to be used, a first rotating shaft with a sliding plate to facilitate mud flow, and filtering large sand particles and impurities when using a mesh screen. A drill rod structure is used to work with the drill bit. A mud-passing shell is used to make the working environment relatively sealed to prevent external impurities from entering during operation. The filtered mud then falls into the supply tank for later use. A cleaning pipe is used to draw external cleaning water through a branch pipe after operation and to rinse the mesh screen. At the same time, an electric telescopic cylinder lifts the sliding plate along the rotating shaft, allowing the filtered mud and water to flow into the reuse tank for later use.

[0011] The present invention is further configured such that: a baffle is installed on the top of the mud tank, a mud mixer is bolted to the top of the baffle, and a coarse material pump is bolted to the top of the baffle.

[0012] By adopting the above technical solution, the top of the mud tank can be protected by setting baffles to prevent impurities from entering, and the structure can be installed more easily. The mud mixer is used to stir the mud to prevent sedimentation.

[0013] The present invention is further configured such that: a pipe rack is bolted to the bottom of the inner wall of the slurry casing, and the inner side of the pipe rack is snapped into the branch pipe.

[0014] By adopting the above technical solution and setting up pipe racks, it is easier to support and install branch pipes, making the structure more reasonable.

[0015] The present invention is further configured such that: an extraction pipe is bolted to the right side of the slurry conveying shell, the right side of the extraction pipe is bolted to the mud pump, and a guide plate is bolted to the top of the inner wall of the slurry conveying shell.

[0016] By adopting the above technical solution, the extraction pipe can be set up to facilitate the extraction of filtered mud from the supply tank in conjunction with the mud pump, and the guide plate is set up to guide the mud falling from the feed pipe.

[0017] The present invention is further configured such that: an opening is provided on the left side of the slurry-passing shell, and a nozzle is bolted to the left side of the cleaning tube.

[0018] By adopting the above technical solution and setting an opening, it is possible to facilitate the discharge of mud generated during the cleaning of the skateboard, allowing it to fall into the reuse pool.

[0019] The present invention is further configured such that: the telescopic end of the electric telescopic cylinder is bolted to a second rotating shaft, the top of the second rotating shaft is rotatably connected to a slider, the outer side of the slider is slidably connected to a guide rail, the guide rail is bolted to the bottom of the slide plate, and the guide rail is located on the front side of the bottom of the slide plate.

[0020] By adopting the above technical solution, a second rotating shaft is set up to cooperate with the slider. When the electric telescopic cylinder extends, the slider and the second rotating shaft push the slide plate to tilt. At the same time, the slider slides on the inside of the guide rail, making the structure more reasonable.

[0021] The present invention is further configured such that: a bottom rod is bolted to the top of the slide plate, an outer rod is bolted to the top of the bottom rod, an inner rod is slidably connected to the inner side of the outer rod, a top rod is bolted to the top of the inner rod, and the bottom of the top rod and the top of the bottom rod are both bolted to the mating mesh plate.

[0022] The above technical solution is adopted: by setting a bottom rod and a top rod, it is used to install the mesh plate. The outer rod and inner rod are set so that when the top rod comes into contact with the slurry shell due to the tilt of the slide plate, the inner rod can be retracted into the outer rod, avoiding the failure of normal use due to the pressure between the structures.

[0023] The present invention is further configured such that: a return spring is bolted to the bottom of the inner wall of the outer rod, and the top of the return spring is bolted to the top of the inner wall of the inner rod.

[0024] By adopting the above technical solution, a reset spring is set up so that the inner rod deforms and stores force when it enters the outer rod, and rebounds to reset the structure after the force is applied.

[0025] The present invention is further configured such that: the drill pipe structure includes a bypass valve housing, the side of the bypass valve housing near the mud pump is bolted to the mud pump, a motor assembly is provided on the side of the bypass valve housing away from the mud pump, a universal joint assembly is provided on the side of the motor assembly away from the bypass valve housing, and a drive shaft assembly is provided on the side of the universal joint assembly away from the motor assembly.

[0026] By adopting the above technical solution, a bypass valve housing is set up in conjunction with the motor assembly, universal joint assembly and drive shaft assembly to provide power to the drill bit and supply mud, making the drilling operation more efficient.

[0027] The present invention is further configured such that: a drill bit is externally connected to the drive shaft assembly, a bypass valve body is installed on the inner side of the bypass valve housing, a valve sleeve is movably connected to the outer side of the bypass valve body, and a main spring is provided on the inner side of the bypass valve housing.

[0028] By adopting the above technical solution, a bypass valve body is set up in conjunction with a valve sleeve and a main spring to enable the bypass valve body to connect to the mud pipeline, thus making the structure more rational.

[0029] In summary, the present invention has the following beneficial effects:

[0030] A mud pit is set up to store the mud to be used. The first rotating shaft and slide plate facilitate the flow of mud and filter out large sand particles and impurities when the mesh plate is used. The drill rod structure is set up to work with the drill bit. The mud passage shell is set up to make the working environment relatively sealed to prevent external impurities from entering during operation. The filtered mud then falls into the supply pool for later use. The cleaning pipe is used to draw external cleaning water through the branch pipe after operation and to rinse the mesh plate. At the same time, the electric telescopic cylinder lifts the slide plate along the rotating shaft, so that the filtered mud and water flow into the reuse pool for later use. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0032] Figure 2 This is a schematic diagram of the external surface of the slurry casing of the present invention;

[0033] Figure 3 This is a schematic diagram of the pulping assembly of the present invention;

[0034] Figure 4 This is a schematic diagram of the mating mesh structure of the present invention;

[0035] Figure 5 This is a schematic diagram of the drill pipe structure of the present invention;

[0036] Figure 6 This is a schematic diagram of the interior of the bypass valve housing of the present invention;

[0037] Figure 7 This is a schematic diagram of the internal structure of the inner rod of the present invention.

[0038] Reference numerals: 1. Mud pit; 2. Mud transfer assembly; 201. Mud transfer housing; 202. First rotating shaft; 203. Slide plate; 204. Matching mesh plate; 205. Cleaning pipe; 206. Branch pipe; 207. Supply tank; 3. Mud pump; 4. Drill rod structure; 401. Bypass valve housing; 402. Motor assembly; 403. Universal joint assembly; 404. Drive shaft assembly; 5. Electric telescopic cylinder; 6. Feed pipe; 7. Coarse material pump; 8. Reuse tank; 9. Baffle; 10. Slurry mixer; 11. Pipe rack; 12. Extraction pipe; 13. Guide plate; 14. Opening; 15. Nozzle; 16. Second rotating shaft; 17. Sliding block; 18. Guide rail; 19. Bottom rod; 20. Outer rod; 21. Inner rod; 22. Top rod; 23. Return spring; 24. Bypass valve body; 25. Valve sleeve; 26. Main spring. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the accompanying drawings.

[0040] Example 1:

[0041] refer to Figure 1-6 A sand-proof and anti-clogging gas-liquid dual-purpose screw drill includes a mud tank 1, a mud-passing component 2 is provided on the right side of the mud tank 1, a mud pump 3 is provided on the right side of the mud-passing component 2, and a drill rod structure 4 is movably connected to the discharge port of the mud pump 3.

[0042] The pulp conveying assembly 2 includes a pulp conveying shell 201. A first rotating shaft 202 is bolted to the left side of the inner wall of the pulp conveying shell 201. A slide plate 203 is rotatably connected to the right side of the first rotating shaft 202. A mesh plate 204 is provided on the top of the slide plate 203. A cleaning pipe 205 is bolted to the inner side of the slide plate 203. A branch pipe 206 is bolted to the bottom of the inner wall of the pulp conveying shell 201. The outer side of the branch pipe 206 is bolted to the cleaning pipe 205. A cleaning water source is connected to the bottom of the branch pipe 206. The right side of the bottom of the pulp conveying shell 201... A supply pool 207 is provided on the side. A mud pool 1 is provided to store the mud to be used. A first rotating shaft 202 is provided in conjunction with a sliding plate 203 to facilitate the flow of mud. When the mud is connected to a screen plate 204, it filters out large sand particles and impurities. A drill rod structure 4 is provided to work with the drill bit. A mud-passing shell 201 is provided to make the working environment relatively sealed to prevent external impurities from entering during operation. The filtered mud then falls into the supply pool 207 for later use.

[0043] like Figure 3As shown, a baffle 9 is installed on the top of the mud tank 1, and a mud mixer 10 is bolted to the top of the baffle 9. The top of the baffle 9 is also bolted to the coarse material pump 7. By setting the baffle 9, the top of the mud tank 1 can be protected to prevent impurities from entering, and the structure can be installed more easily. The mud mixer 10 is used to stir the mud to prevent sedimentation.

[0044] like Figure 3 As shown, an extraction pipe 12 is bolted to the right side of the slurry casing 201, and the right side of the extraction pipe 12 is bolted to the mud pump 3. A guide plate 13 is bolted to the top of the inner wall of the slurry casing 201. By setting the extraction pipe 12, it is convenient to cooperate with the mud pump 3 to extract the filtered mud from the supply tank 207. The guide plate 13 is used to guide the mud falling from the feed pipe 6.

[0045] like Figure 5 As shown, the drill pipe structure 4 includes a bypass valve housing 401. The bypass valve housing 401 is bolted to the mud pump 3 on the side closest to the mud pump 3. A motor assembly 402 is provided on the side of the bypass valve housing 401 away from the mud pump 3. A universal joint assembly 403 is provided on the side of the motor assembly 402 away from the bypass valve housing 401. A drive shaft assembly 404 is provided on the side of the universal joint assembly 403 away from the motor assembly 402. By setting the bypass valve housing 401 in conjunction with the motor assembly 402, the universal joint assembly 403, and the drive shaft assembly 404, power is provided to the drill bit and mud is supplied, making the drilling operation more efficient.

[0046] like Figure 6 As shown, the drive shaft assembly 404 is externally connected to the drill bit. A bypass valve body 24 is installed on the inner side of the bypass valve housing 401. A valve sleeve 25 is movably connected to the outer side of the bypass valve body 24. A main spring 26 is provided on the inner side of the bypass valve housing 401. By setting the bypass valve body 24 in conjunction with the valve sleeve 25 and the main spring 26, the bypass valve body 24 can provide the effect of connecting the mud pipeline, thus making the structure more reasonable.

[0047] Brief description of the usage process: First, the mud is put into the mud tank 1 for later use, and then pumped into the mud-passing shell 201 by the coarse material pump 7. The mud flows along the slide plate 203, and when it is combined with the mesh plate 204, it is filtered for large sand particles and impurities. The drill rod structure 4 is set up to work with the drill bit. The mud-passing shell 201 is set up to make the working environment relatively sealed and prevent external impurities from entering during operation. Then, the filtered mud falls into the supply tank 207 for later use. The mud pump 3 draws the mud from the supply tank 207 and uses it with the drill rod structure 4 for drilling operations. The mud mixer 10 is set up to continuously stir the mud tank 1 during operation.

[0048] Example 2:

[0049] refer to Figure 1-7 A sand-proof and anti-clogging gas-liquid dual-purpose screw drill includes a mud tank 1, a mud-passing component 2 is provided on the right side of the mud tank 1, a mud pump 3 is provided on the right side of the mud-passing component 2, and a drill rod structure 4 is movably connected to the discharge port of the mud pump 3.

[0050] An electric telescopic cylinder 5 is bolted to the bottom of the inner wall of the slurry casing 201. The top of the electric telescopic cylinder 5 is used in conjunction with the slide plate 203. An inlet pipe 6 is bolted to the top of the slurry casing 201. A coarse material pump 7 is bolted to one side of the inlet pipe 6 and is located at the top of the mud tank 1. A reuse tank 8 is bolted to the left side of the slurry casing 201. A cleaning pipe 205 is used to draw external cleaning water through a branch pipe 206 after operation and to rinse the mesh plate 204. At the same time, the electric telescopic cylinder 5 lifts the slide plate 203 along the rotating shaft, so that the filtered mud and water flow into the reuse tank 8 for later use.

[0051] like Figure 3 As shown, a pipe support 11 is bolted to the bottom of the inner wall of the slurry casing 201. The inner side of the pipe support 11 is snapped into the branch pipe 206. By setting the pipe support 11, it is convenient to support and install the branch pipe 206, making the structure more reasonable.

[0052] like Figure 3 As shown, an opening 14 is provided on the left side of the slurry casing 201, and a nozzle 15 is bolted to the left side of the cleaning pipe 205. By providing the opening 14, it is convenient to discharge the mud generated by the slide plate 203 during cleaning, so that it can fall into the reuse tank 8.

[0053] like Figure 3 As shown, the telescopic end of the electric telescopic cylinder 5 is bolted with a second rotating shaft 16. The top of the second rotating shaft 16 is rotatably connected to a slider 17. The outer side of the slider 17 is slidably connected to a guide rail 18. The guide rail 18 is bolted to the bottom of the slide plate 203 and is located on the front side of the bottom of the slide plate 203. By setting the second rotating shaft 16 in conjunction with the slider 17, when the electric telescopic cylinder 5 extends, it will push the slide plate 203 to tilt through the slider 17 and the second rotating shaft 16. At the same time, the slider 17 slides on the inner side of the guide rail 18, making the structure more reasonable.

[0054] like Figure 4As shown, a bottom rod 19 is bolted to the top of the slide plate 203, an outer rod 20 is bolted to the top of the bottom rod 19, an inner rod 21 is slidably connected to the inner side of the outer rod 20, and a top rod 22 is bolted to the top of the inner rod 21. The bottom of the top rod 22 and the top of the bottom rod 19 are both bolted to the mating mesh plate 204. By setting the bottom rod 19 and the top rod 22, the mating mesh plate 204 is installed. The outer rod 20 and the inner rod 21 can facilitate the inner rod 21 to retract into the outer rod 20 when the top rod 22 contacts the slurry outer shell 201 due to the tilt of the slide plate 203, thus avoiding the inability to use the equipment properly due to pressure between the structures.

[0055] like Figure 7 As shown, a return spring 23 is bolted to the bottom of the inner wall of the outer rod 20, and the top of the return spring 23 is bolted to the top of the inner wall of the inner rod 21. By setting the return spring 23, the inner rod 21 will deform and store force when it enters the outer rod 20, and after the force is exhausted, it will rebound and drive the structure to reset.

[0056] Brief description of the usage process: When the mesh plate 204 needs to be cleaned after the operation, the cleaning pipe 205 is used to draw external cleaning water through the branch pipe 206 and rinse the mesh plate 204. At the same time, the electric telescopic cylinder 5 lifts the slide plate 203 along the rotating shaft, so that the filtered mud and water flow into the reuse tank 8. When the slide plate 203 is lifted, the top rod 22 presses against the slurry shell 201, so that the inner rod 21 enters the outer rod 20. At the same time, the main spring 26 is compressed and deformed. After the operation, the main spring 26 rebounds and drives the inner rod 21 to return to its original position from the outer rod 20.

[0057] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A dual-purpose gas-liquid drill bit for sand prevention and clogging prevention, comprising a mud tank (1), characterized in that: A mud-passing assembly (2) is provided on the right side of the mud tank (1), and a mud pump (3) is provided on the right side of the mud-passing assembly (2). The discharge port of the mud pump (3) is movably connected to a drill rod structure (4). The slurry passing assembly (2) includes a slurry passing shell (201). A first rotating shaft (202) is bolted to the left side of the inner wall of the slurry passing shell (201). A sliding plate (203) is rotatably connected to the right side of the first rotating shaft (202). A matching mesh plate (204) is provided on the top of the sliding plate (203). A cleaning pipe (205) is bolted to the inner side of the sliding plate (203). A branch pipe (206) is bolted to the bottom of the inner wall of the slurry passing shell (201). The outer side of the branch pipe (206) is bolted to the cleaning pipe (205). A clean water source is connected to the bottom of the branch pipe (206). A supply pool (207) is provided on the right side of the bottom of the slurry passing shell (201). An electric telescopic cylinder (5) is bolted to the bottom of the inner wall of the slurry conveying shell (201). The top of the electric telescopic cylinder (5) is used in conjunction with the sliding plate (203). An inlet pipe (6) is bolted to the top of the slurry conveying shell (201). A coarse material pump (7) is bolted to one side of the inlet pipe (6) from the slurry conveying shell (201). The coarse material pump (7) is located at the top of the mud tank (1). A reuse tank (8) is bolted to the left side of the slurry conveying shell (201). A baffle (9) is installed at the top of the mud tank (1). A mud mixer (10) is bolted to the top of the baffle (9). The top of the baffle (9) is bolted to the coarse material pump (7). A pipe is bolted to the bottom of the inner wall of the slurry conveying shell (201). The frame (11) is connected to the branch pipe (206) on its inner side. The extraction pipe (12) is bolted to the right side of the slurry casing (201). The extraction pipe (12) is bolted to the right side of the mud pump (3). The guide plate (13) is bolted to the top of the inner wall of the slurry casing (201). An opening (14) is provided on the left side of the slurry casing (201). A nozzle (15) is bolted to the left side of the cleaning pipe (205). A second rotating shaft (16) is bolted to the telescopic end of the electric telescopic cylinder (5). A slider (17) is rotatably connected to the top of the second rotating shaft (16). A guide rail (18) is slidably connected to the outside of the slider (17). The guide rail (18) is bolted to the slider. At the bottom of the plate (203), the guide rail (18) is set on the front side of the bottom of the slide plate (203). The top of the slide plate (203) is bolted with a bottom rod (19). The top of the bottom rod (19) is bolted with an outer rod (20). The inner side of the outer rod (20) is slidably connected with an inner rod (21). The top of the inner rod (21) is bolted with a top rod (22). The bottom of the top rod (22) and the top of the bottom rod (19) are both bolted with a mating mesh plate (204). The bottom of the inner wall of the outer rod (20) is bolted with a return spring (23). The top of the return spring (23) is bolted with the top of the inner wall of the inner rod (21). The drill rod structure (4) includes a bypass valve housing (401). The bypass valve The outer casing (401) is bolted to the mud pump (3) on the side closest to the mud pump (3). A motor assembly (402) is provided on the side of the bypass valve casing (401) away from the mud pump (3). A universal joint assembly (403) is provided on the side of the motor assembly (402) away from the bypass valve casing (401). A drive shaft assembly (404) is provided on the side of the universal joint assembly (403) away from the motor assembly (402). A drill bit is connected to the drive shaft assembly (404). A bypass valve body (24) is installed on the inner side of the bypass valve casing (401). A valve sleeve (25) is movably connected to the outer side of the bypass valve body (24). A main spring (26) is provided on the inner side of the bypass valve casing (401).

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