A zero-emission environmental protection pigging device for oil wells

Abstract

The present invention is a zero-emission environmental protection type oil well ball throwing and pigging device, comprising: a tee joint, a first ball delivery pipe, a first oil cylinder, a first piston and a ball storage chamber. One end of the tee joint is communicated with the lower end of the first ball delivery pipe in the vertical direction. The upper end of the first ball delivery pipe is connected to the first oil cylinder. The output shaft of the first oil cylinder extends into the first ball delivery pipe and is connected to the first piston. One end of a detection pipe is communicated with the first ball delivery pipe, and the other end of the detection pipe is communicated with one end of a second ball delivery pipe in the horizontal direction. The other end of the second ball delivery pipe is connected to a second oil cylinder. The output shaft of the second oil cylinder extends into the second ball delivery pipe and is connected to a second piston. A ball chamber capable of detecting the number of balls is arranged at the second ball delivery pipe near the detection pipe, and a plurality of wax-removing rubber balls embedded with radio frequency digital chips are stored in the ball chamber. Since the ball throwing and receiving process is carried out alternately in a sealed manner in two piston spaces, the high-pressure crude oil in the oil pipeline will not be discharged externally; the recycled digital wax-removing balls can be reused without cleaning, realizing zero emission and environmental protection.

Description

Technical Field

[0001] The present invention belongs to the technical field of oil production, and particularly relates to a zero-emission environmental protection type oil well pigging device for throwing balls. Background Art

[0002] With the enhancement of global environmental protection awareness, all industries are exploring more environmentally friendly production methods and technologies. As one of the world's major energy supply industries, the oil industry is also actively exploring environmentally friendly production technologies. Among them, oil well pigging by throwing balls is a commonly used process in the oil industry, which can effectively remove paraffin, impurities and sediments in the oil well pipeline and ensure the normal production of the oil well. However, when the traditional oil well pigging device for throwing balls is used to throw the pigging balls, it is very difficult to recover all of them, resulting in the remaining pigging balls in the oil well pipeline, which affects the transportation of pipeline oil. The discharge of the pigging balls into the surrounding environment will also cause harm to the environment. Summary of the Invention

[0003] Therefore, the present invention aims to solve the problem that in the existing oil well pigging device for throwing balls, after throwing the balls, there will be remaining pigging balls in the oil well pipeline, which affects the transportation of pipeline oil, and the discharge of the pigging balls into the surrounding environment will also cause harm to the environment.

[0004] For this purpose, the technical solution adopted is that a zero-emission environmental protection type oil well pigging device for throwing balls of the present invention includes: a tee joint, a first ball delivery pipe, a first oil cylinder, a first piston, and a detection pipe. One end of the tee joint is connected to the lower end of the vertically arranged first ball delivery pipe, the upper end of the first ball delivery pipe is connected to the first oil cylinder, the output shaft of the first oil cylinder extends into the first ball delivery pipe and is connected to the first piston, one end of the detection pipe is connected to the first ball delivery pipe, the other end of the detection pipe is connected to one end of the horizontally arranged second ball delivery pipe, the other end of the second ball delivery pipe is connected to the second oil cylinder, the output shaft of the second oil cylinder extends into the second ball delivery pipe and is connected to the second piston, a ball chamber is arranged near the detection pipe on the second ball delivery pipe, and a plurality of digital balls are arranged in the ball chamber.

[0005] Preferably, an RF card is arranged in the digital ball, and a detection head is arranged at the detection pipe.

[0006] Preferably, a ball pressing weight is arranged at the top inside the ball chamber, one end of a suspension rope is connected to the ball pressing weight, and the other end of the suspension rope is connected to the top wall of the ball chamber.

[0007] Preferably, the second oil cylinder is installed on a bracket, an oil tank is arranged at the bottom of the bracket, a hydraulic station is arranged on the oil tank, the oil tank is communicated with the hydraulic station, the hydraulic station is respectively communicated with the first oil cylinder and the second oil cylinder, and an electromagnetic valve and an overflow valve are arranged on the hydraulic station.

[0008] Preferably, a control cabinet is arranged at the top of the bracket, and a wireless antenna is arranged at the top of the control cabinet.

[0009] Preferably, an outer shell is provided at the connection between the second ball-return pipe and the ball cabin. A pressure rod is arranged inside the outer shell. One end of the pressure rod is provided with a pointed nozzle head which extends into the ball cabin. A convex block is arranged on the pressure rod and is hinged to the inner wall of the outer shell. The other end of the pressure rod extends into the second ball-return pipe and contacts the output shaft of the second oil cylinder. The diameter of the second piston is larger than that of the output shaft of the second oil cylinder. A ball position detector is arranged on the outer wall of the ball cabin.

[0010] Preferably, it includes a stirring device which comprises a chemical dosing tank, a chemical delivery pipe, a chemical dosing pump and an electric heating pipe. The chemical dosing tank is communicated with one end of the chemical delivery pipe, and the other end of the chemical delivery pipe is communicated with the first ball-return pipe. A chemical dosing pump is arranged inside the chemical dosing tank and is used to provide power for the chemical delivery. An electric heating pipe is arranged on the inner wall of the chemical dosing tank. A transmission box is arranged at the top end of the chemical dosing tank. A fixing block is arranged inside the transmission box. A first rotating shaft passes through the fixing block and is rotatably connected to the fixing block. The fixing block is connected to the inner wall of the transmission box. The first rotating shaft is arranged in the vertical direction. The lower end of the first rotating shaft is connected to a rotating rod. One end of the rotating rod is provided with a groove. A motor is arranged on the inner wall of the groove. The output shaft of the motor is coaxially connected to one end of a second rotating shaft in the downward direction. The other end of the second rotating shaft is connected to one end of a crank. A gear is coaxially arranged on the second rotating shaft. An internal gear is arranged on the inner wall of the transmission box. The gear meshes with the internal gear.

[0011] Preferably, a guiding groove extending radially is arranged at the bottom end of the rotating rod. A sliding strip is slidably connected inside the guiding groove. One end of the sliding strip close to the gear is provided with a long strip ring. One end of the crank away from the second rotating shaft is connected to one end of a sliding column. The other end of the sliding column passes through the long strip ring and can slide inside the long strip ring. One end of a stirring shaft is connected to the sliding strip, and the other end of the stirring shaft extends into the chemical dosing tank and is coaxially connected to a stirring cylinder. A plurality of stirring blades are arranged on the outer wall of the stirring cylinder.

[0012] Preferably, it is a chemical agent delivery device which comprises a cylinder body, a sealing plug, a push-pull rod and a nozzle. A chemical agent tank is arranged at the upper end of the first rotating shaft, and paraffin remover is contained inside the chemical agent tank. A cylinder body is arranged at one end of the rotating rod away from the gear. A sealing plug is arranged inside the cylinder body and can reciprocate inside the cylinder body. One end of the push-pull rod is connected to the sealing plug, and the other end of the push-pull rod extends out of the cylinder body and is connected to one end of the sliding strip away from the long strip ring. A nozzle is arranged at the bottom end of the sliding strip. One end of a hose is communicated with the left end of the cylinder body, and the other end of the hose is communicated with the nozzle. A first one-way valve is arranged on the hose. One end of a delivery pipe is communicated with the bottom end of the chemical agent tank, and the other end of the delivery pipe passes through the first rotating shaft and the rotating rod in sequence and is communicated with the left end of the cylinder body. A second one-way valve is arranged on the delivery pipe. The stirring device can drive the stirring cylinder to rotate and reciprocate radially. The nozzle moves together with the stirring cylinder. The stirring device drives the chemical agent delivery device to move. The chemical agent delivery device can provide power for the nozzle to spray paraffin remover. When the stirring cylinder is stirring, the nozzle intermittently sprays paraffin remover.

[0013] Preferably, a water injection pipe is provided on the side wall of the chemical addition tank, and a valve is provided on the water injection pipe. One end of the chemical agent tank is communicated with one end of a round pipe, and the other end of the round pipe is threadedly connected with a lid. An opening is provided at the top end of the chemical agent tank, and a cover plate is provided on the opening. The cover plate is connected to the top end of the chemical agent tank by screws. A solid particle filling pipe is provided on the side wall of the chemical addition tank.

[0014] The technical solution of the present invention has the following advantages:

[0015] 1. For a zero-emission environmentally friendly oil well pigging device of the present invention, an elastic rubber ball (embedded with a radio frequency digital chip) slightly smaller than the inner diameter of the oil pipeline is used. Relying on the pipeline transportation pressure, the sphere is pushed to squeeze and push the wax scale substances gathered on the inner wall of the oil pipeline, so as to remove the paraffin, impurities and sediments on the inner wall of the pipeline in the oil pipeline. Since the detection head in the detection pipe can identify the digital ball, the number of digital balls can be recorded, so that the digital balls can be accurately recovered, preventing the pigging balls from remaining in the oil well pipeline, avoiding affecting the transportation of oil, reducing the harm to the surrounding environment, and being more environmentally friendly.

[0016] 2. For a zero-emission environmentally friendly oil well pigging device of the present invention, the nozzle can move circumferentially with the mixing barrel and reciprocate radially. The nozzle intermittently sprays the paraffin remover, so as to continuously spray the paraffin remover into the hot water, and after being stirred evenly by the mixing barrel, it is then transported into the medicine delivery pipe through a medicine delivery pump, and finally transported into the first pigging pipe and enters the oil well pipeline together with the pigging ball. The hot water can melt the paraffin, and then the paraffin remover can dissolve the paraffin. The pigging ball cleans the sediment and impurities by impact, improving the cleaning efficiency of the oil well oil pipeline.

[0017] Other features and advantages of the present invention will be described in the following description. And, in part, it will be obvious from the description, or understood by implementing the present invention. The purpose and other advantages of the present invention can be achieved and obtained by the structure specifically pointed out in the written description and the drawings.

[0018] The following will further describe the technical solution of the present invention in detail through the drawings and embodiments. Description of the Drawings

[0019] The drawings are used to provide a further understanding of the present invention, and constitute a part of the description. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0020] Figure 1 is the structural schematic diagram of the present invention;

[0021] Figure 2 is the structural schematic diagram of the pressure rod and the pointed nozzle head in the present invention;

[0022] Figure 3It is a schematic structural diagram of the stirring device and the chemical agent conveying device in the present invention;

[0023] Figure 4 is Figure 3 an enlarged view of part A of

[0024] Figure 5 It is a bottom view of the stirring device and the chemical agent conveying device in the present invention;

[0025] Figure 6 It is a schematic structural diagram of the mixing drum in the present invention;

[0026] Description of reference numerals:

[0027] 1. Three-way joint; 2. First ball conveying pipe; 3. First oil cylinder; 4. First piston; 5. Detection pipe; 6. Second ball conveying pipe; 7. Second oil cylinder; 8. Second piston; 9. Ball cabin; 10. Digital ball; 11. Ball pressing weight; 12. Suspension rope; 13. Bracket; 14. Oil tank; 15. Hydraulic station; 16. Solenoid valve; 17. Relief valve; 18. Control cabinet; 19. Wireless antenna; 20. Outer shell; 21. Pressure rod; 22. Pointed nozzle; 23. Protrusion; 24. Ball position detector; 25. Chemical agent adding tank; 26. Chemical agent conveying pipe; 27. Chemical agent adding pump; 28. Electric heating pipe; 29. Transmission box; 30. Fixed block; 31. First rotating shaft; 32. Rotating rod; 33. Groove; 34. Motor; 35. Second rotating shaft; 36. Crank; 37. Gear; 38. Internal gear; 39. Guide groove; 40. Slide bar; 41. Long strip ring; 42. Slide column; 43. Stirring shaft; 44. Mixing drum; 45. Cylinder block; 46. Sealing plug; 47. Push-pull rod; 48. Nozzle; 49. Hose; 50. First one-way valve; 51. Conveying pipe; 52. Second one-way valve; 53. Chemical agent tank; 54. Water injection pipe; 55. Round pipe; 56. Lid; 57. Opening; 58. Cover plate, 59. Solid particle adding pipe. Detailed implementation manners

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0030] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0032] Embodiment 1

[0033] The present invention provides a zero-emission environmental protection type oil well ball throwing and pigging device, as Figure 1-2 shown, including: a tee joint 1, a first ball delivery pipe 2, a first oil cylinder 3, a first piston 4, a detection pipe 5. One end of the tee joint 1 is connected to the lower end of the vertically arranged first ball delivery pipe 2. The other two ends of the tee joint 1 are respectively connected to the oil pipelines of the oil well through flanges. The upper end of the first ball delivery pipe 2 is connected to the first oil cylinder 3. The output shaft of the first oil cylinder 3 extends into the first ball delivery pipe 2 and is connected to the first piston 4. One end of the detection pipe 5 is connected to the first ball delivery pipe 2. The other end of the detection pipe 5 is connected to one end of a horizontally arranged second ball delivery pipe 6. The other end of the second ball delivery pipe 6 is connected to a second oil cylinder 7. The output shaft of the second oil cylinder 7 extends into the second ball delivery pipe 6 and is connected to a second piston 8. A ball cabin 9 is arranged near the detection pipe 5 on the second ball delivery pipe 6. A plurality of digital balls 10 are arranged in the ball cabin 9. An RF card is arranged in the digital ball 10. A detection head is arranged at the detection pipe 5, which can detect the digital balls passing through the detection pipe for counting. A ball pressing weight 11 is arranged at the top inside the ball cabin 9. The ball pressing weight 11 is connected to one end of a suspension rope 12, and the other end of the suspension rope 12 is connected to the top wall of the ball cabin 9. The ball pressing weight 11 facilitates the falling of the digital balls.

[0034] The second oil cylinder 7 is installed on a bracket 13. An oil tank 14 is arranged at the bottom of the bracket 13. A hydraulic station 15 is arranged on the oil tank 14. The oil tank 14 is connected to the hydraulic station 15. The hydraulic station 15 is respectively connected to the first oil cylinder 3 and the second oil cylinder 7. A solenoid valve 16 and a relief valve 17 are arranged on the hydraulic station 15. The hydraulic station is used to control the first oil cylinder 3 and the second oil cylinder 7. A control cabinet 18 is arranged at the top end of the bracket 13. A wireless antenna 19 is arranged at the top end of the control cabinet 18, and remote control can be carried out through the antenna 19.

[0035] There is a housing 20 provided at the connection between the second ball delivery pipe 6 and the ball chamber 9. Inside the housing 20, there is a pressure rod 21. One end of the pressure rod 21 is provided with a pointed nozzle press head 22 which extends into the ball chamber 9. There is a convex block 23 provided on the pressure rod 21, and the convex block 23 is hinged to the inner wall of the housing 20. The other end of the pressure rod 21 extends into the second ball delivery pipe 6 and contacts the output shaft of the second oil cylinder 7. The diameter of the second piston 8 is larger than the diameter of the output shaft of the second oil cylinder 7. There is a ball position detector 24 provided on the outer wall of the ball chamber 9. When the second oil cylinder 7 drives the second piston 8 to move to the right, the second piston 8 contacts the right end of the pressure rod 21, causing the pressure rod 21 to rotate counterclockwise. The pressure rod 21 drives the pointed nozzle press head 22 to press downward to the lower left, causing the digital ball to fall and block above the falling digital ball, preventing multiple digital balls from falling at once. When the second oil cylinder 7 drives the second piston 8 to move to the left, the pressure rod 21 rotates clockwise, and the pressure rod 21 drives the pointed nozzle press head 22 to move upward to the upper right. Without obstruction, the digital ball 10 falls above the second piston 8 for standby, thus always ensuring that only one digital ball falls each time.

[0036] The working principle and beneficial technical effects of the above technical solution: The first oil cylinder 3 drives the first piston 4 to move to the lowermost end, and the second oil cylinder 7 drives the second piston 8 to move to the rightmost end. The digital balls 10 in the ball chamber 9 fall into the second ball delivery pipe 6. The second oil cylinder 7 drives the second piston 8 to move to the middle position, which plays a role in sealing the ball chamber 9 and pushes the falling digital device into the detection pipe 5 for recording. Then the first oil cylinder 3 drives the first piston 4 to lift upward, and the second piston 8 continues to move to the left, pushing the falling digital ball into the first ball delivery pipe 2. The first oil cylinder 3 drives the first piston 4 to press downward, causing the digital ball to be pressed into the tee joint 1 and then enter the oil pipeline of the oil well. At the end of the oil pipeline of the oil well, it is suctioned by a oil pump. Through the impact and friction of the digital ball on the inner wall of the pipeline, paraffin, impurities and sediments on the inner wall of the pipeline are removed. Since the detection head in the detection pipe can identify the digital ball, the number of digital balls can be recorded, so that the digital balls can be accurately recovered, preventing pig balls from remaining in the oil well pipeline, avoiding affecting the oil transportation, reducing the harm to the surrounding environment, and being more environmentally friendly.

[0037] Since the detection head in the detection tube can identify the radio frequency digital ball, the controller (RTU) records information such as the launch time of the digital ball and the well (station) number, and transmits it to the remote data management and control platform through wired or wireless transmission for display or control of the launch operation. The receiving end is equipped with a corresponding receiving digital detection device, so as to accurately and timely reflect the information of the digital ball entering the recovery barrel and complete the process from ball launch to ball reception. Due to the adoption of the radio frequency digital ball technology, the time of ball launch and reception is monitored in real time, and an alarm is issued for the phenomenon that the pigging ball is delayed in entering the station or lost due to blockage in the oil pipeline, and the launch of the next ball is prohibited, thus preventing the residual pigging balls in the oil well pipeline from causing congestion and affecting the transportation of crude oil. Since the ball launch and reception process is carried out alternately and hermetically in two piston spaces, the high-pressure crude oil in the oil pipeline will not be discharged externally; the recovered digital pigging balls can be reused without cleaning, thus achieving zero environmental emissions.

[0038] Embodiment 2

[0039] On the basis of Embodiment 1, as Figure 1-6 shown, it includes a stirring device, and the stirring device includes: a chemical addition tank 25, a chemical delivery pipe 26, a chemical addition pump 27 and an electric heating pipe 28. The chemical addition tank 25 is communicated with one end of the chemical delivery pipe 26, and the other end of the chemical delivery pipe 26 is communicated with the first ball delivery pipe 2. A chemical addition pump 27 is arranged in the chemical addition tank 25, and the chemical addition pump 27 is used to provide power for chemical delivery. An electric heating pipe 28 is arranged on the inner wall of the chemical addition tank 25. A transmission box 29 is arranged at the top of the chemical addition tank 25. A fixing block 30 is arranged in the transmission box 29. A first rotating shaft 31 passes through the fixing block 30 and is rotatably connected to the fixing block 30. The fixing block 30 is connected to the inner wall of the transmission box 29. The first rotating shaft 31 is arranged in the vertical direction. The lower end of the first rotating shaft 31 is connected to a rotating rod 32. One end of the rotating rod 32 is provided with a groove 33. A motor 34 is arranged on the inner wall of the groove 33. The output shaft of the motor 34 is coaxially connected to one end of a second rotating shaft 35 downward. The other end of the second rotating shaft 35 is connected to one end of a crank 36. A gear 37 is coaxially arranged on the second rotating shaft 35. An internal gear 38 is arranged on the inner wall of the transmission box 29. The gear 37 meshes with the internal gear 38.

[0040] A guiding groove 39 extending radially is arranged at the bottom end of the rotating rod 32. A sliding strip 40 is slidably connected in the guiding groove 39. One end of the sliding strip 40 close to the gear 37 is provided with a long strip ring 41. One end of a sliding column 42 is connected to the end of the crank 36 far from the second rotating shaft 35. The other end of the sliding column 42 passes through the long strip ring 41 and can slide in the long strip ring 41. One end of a stirring shaft 43 is connected to the sliding strip 40, and the other end of the stirring shaft 43 extends into the chemical addition tank 25 and is coaxially connected to a stirring cylinder 44. A plurality of stirring blades are arranged on the outer wall of the stirring cylinder 44.

[0041] Chemical agent delivery device, the chemical agent delivery device includes: a cylinder block 45, a sealing plug 46, a push-pull rod 47 and a nozzle 48. A chemical agent tank 53 is provided at the upper end of the first rotating shaft 31. A paraffin remover is contained in the chemical agent tank 53. A cylinder block 45 is provided at one end of the rotating rod 32 away from the gear 37. A sealing plug 46 is arranged in the cylinder block 45. The sealing plug 46 can reciprocate in the cylinder block 45. One end of the push-pull rod 47 is connected to the sealing plug 46, and the other end of the push-pull rod 47 extends out of the cylinder block 45 and is connected to one end of the slide bar 40 away from the long strip ring 41. A nozzle 48 is provided at the bottom end of the slide bar 40. One end of the hose 49 is communicated with the left end of the cylinder block 45, and the other end of the hose 49 is communicated with the nozzle 48. A first one-way valve 50 is arranged on the hose 49. One end of the delivery pipe 51 is communicated with the bottom end of the chemical agent tank 53, and the other end of the delivery pipe 51 sequentially passes through the first rotating shaft 31 and the rotating rod 32 and is communicated with the left end of the cylinder block 45. A second one-way valve 52 is arranged on the delivery pipe 51. The stirring device can drive the stirring cylinder 44 to rotate and reciprocate radially. The nozzle 48 moves together with the stirring cylinder 44. The stirring device drives the chemical agent delivery device to move. The chemical agent delivery device can provide power for the nozzle 48 to spray the paraffin remover. When the stirring cylinder 44 is stirring, the nozzle 48 intermittently sprays the paraffin remover.

[0042] A water injection pipe 54 is provided on the side wall of the chemical agent adding tank 25. A valve is arranged on the water injection pipe 54. The top end of the chemical agent tank 53 is communicated with one end of a round pipe 55. The other end of the round pipe 55 is threadedly connected to a lid 56. An opening 57 is provided at the top end of the chemical agent tank 53. A cover plate 58 is arranged on the opening 57. The cover plate 58 is connected to the top end of the chemical agent tank 53 by screws.

[0043] Working principle and beneficial technical effects of the above technical solution: Since there is paraffin and impurities on the inner wall of the pipeline, it is difficult to remove the paraffin by the impact and friction of the pig. Therefore, it is necessary to dissolve it with an oil-based paraffin remover. In addition, some solid particles are added and mixed in the paraffin remover to remove some fine impurities existing on the inner wall of the pipeline. The solid particles and the oil-based paraffin remover need to be mixed evenly with hot water. Since the water solubility of the oil-based paraffin remover is poor, stirring is required to mix evenly. Start the motor 34 and the electric heating tube 28. The electric heating tube 28 can heat the water in the chemical dosing tank 25. The motor 34 drives the gear 37 to rotate. Through the meshing of the gear 37 and the internal gear 38, the rotating rod 32 rotates around the axis of the internal gear 38. At the same time, the gear 37 rotates around the axis of the second rotating shaft 35. The gear 37 drives the second rotating shaft 35, the crank 36 and the sliding column 42 to rotate. The sliding column 42 slides in the long strip ring 41, so that the long strip ring 41 and the slide bar 40 reciprocate along the guide groove 39. The slide bar 40 drives the stirring shaft 43 and the stirring cylinder 44 to rotate circumferentially along the internal gear 38 while reciprocating radially along the internal gear 38, for stirring. When the stirring cylinder 44 is stirring, the slide bar 40 reciprocates along the guide groove 39, driving the sealing plug 46 to reciprocate in the cylinder block 45. The paraffin remover stored in the chemical agent tank 53 is transported to the cylinder block 45 through the delivery pipe 51, and then transported to the nozzle 48 through the hose 49 and sprayed out. The nozzle 48 can move circumferentially together with the stirring cylinder 44 and reciprocate radially. The nozzle 48 intermittently sprays the paraffin remover, so as to continuously spray the paraffin remover into the hot water and stir evenly through the stirring cylinder 44. Then it is transported to the medicine delivery pipe 26 through the chemical dosing pump 27, and finally transported into the first pigging pipe 2 and enters the oil well pipeline together with the pig. The hot water can melt the paraffin, and then the paraffin is dissolved by the paraffin remover. The pig cleans the larger precipitates and impurities by impact. The solid particles remove some fine impurities and precipitates, improving the cleaning efficiency of the oil well oil transportation pipeline.

[0044] Obviously, those skilled in the art can make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A zero-emission environmental protection oil well ball throwing pigging device, characterized in that, Comprising: A tee joint (1), a first ball delivery pipe (2), a first oil cylinder (3), a first piston (4), a detection pipe (5). One end of the tee joint (1) is communicated with the lower end of the vertically arranged first ball delivery pipe (2). The upper end of the first ball delivery pipe (2) is connected to the first oil cylinder (3). The output shaft of the first oil cylinder (3) extends into the first ball delivery pipe (2) and is connected to the first piston (4). One end of the detection pipe (5) is communicated with the first ball delivery pipe (2), and the other end of the detection pipe (5) is communicated with one end of a horizontally arranged second ball delivery pipe (6). The other end of the second ball delivery pipe (6) is connected to a second oil cylinder (7). The output shaft of the second oil cylinder (7) extends into the second ball delivery pipe (6) and is connected to a second piston (8). A ball cabin (9) is arranged at the position of the second ball delivery pipe (6) close to the detection pipe (5), and a plurality of digital balls (10) are arranged in the ball cabin (9); Comprising a stirring device. The stirring device includes: a chemical addition tank (25), a chemical delivery pipe (26), a chemical addition pump (27), and an electric heating pipe (28). The chemical addition tank (25) is communicated with one end of the chemical delivery pipe (26), and the other end of the chemical delivery pipe (26) is communicated with the first ball delivery pipe (2). A chemical addition pump (27) is arranged in the chemical addition tank (25), and the chemical addition pump (27) is used to provide power for chemical delivery. An electric heating pipe (28) is arranged on the inner wall of the chemical addition tank (25). A transmission box (29) is arranged at the top end of the chemical addition tank (25). A fixing block (30) is arranged in the transmission box (29). A first rotating shaft (31) passes through the fixing block (30) and is rotatably connected to the fixing block (30). The fixing block (30) is connected to the inner wall of the transmission box (29). The first rotating shaft (31) is arranged in the vertical direction. The lower end of the first rotating shaft (31) is connected to a rotating rod (32). One end of the rotating rod (32) is provided with a groove (33). A motor (34) is arranged on the inner wall of the groove (33). The output shaft of the motor (34) is coaxially connected to one end of a second rotating shaft (35) downward. The other end of the second rotating shaft (35) is connected to one end of a crank (36). A gear (37) is coaxially arranged on the second rotating shaft (35). An internal gear (38) is arranged on the inner wall of the transmission box (29). The gear (37) meshes with the internal gear (38); The bottom end of the rotating rod (32) is provided with a guiding groove (39) extending radially. A sliding strip (40) is slidably connected in the guiding groove (39). One end of the sliding strip (40) close to the gear (37) is provided with a long strip ring (41). One end of the crank (36) far from the second rotating shaft (35) is connected to one end of a sliding column (42). The other end of the sliding column (42) passes through the long strip ring (41) and can slide in the long strip ring (41). One end of a stirring shaft (43) is connected to the sliding strip (40), and the other end of the stirring shaft (43) extends into the chemical addition tank (25) and is coaxially connected to a stirring cylinder (44). A plurality of stirring blades are arranged on the outer wall of the stirring cylinder (44); Reagent delivery device, the reagent delivery device includes: a cylinder block (45), a sealing plug (46), a push-pull rod (47) and a nozzle (48). There is a reagent tank (53) provided at the upper end of the first rotating shaft (31). The reagent tank (53) contains paraffin remover. One end of the rotating rod (32) away from the gear (37) is provided with a cylinder block (45). A sealing plug (46) is arranged inside the cylinder block (45). The sealing plug (46) can reciprocate inside the cylinder block (45). One end of the push-pull rod (47) is connected to the sealing plug (46), and the other end of the push-pull rod (47) extends out of the cylinder block (45) and is connected to one end of the slide bar (40) away from the long strip ring (41). A nozzle (48) is provided at the bottom end of the slide bar (40). One end of the hose (49) is communicated with the left end of the cylinder block (45), and the other end of the hose (49) is communicated with the nozzle (48). A first one-way valve (50) is arranged on the hose (49). One end of the delivery pipe (51) is communicated with the bottom end of the reagent tank (53), and the other end of the delivery pipe (51) sequentially passes through the first rotating shaft (31), the rotating rod (32) and is communicated with the left end of the cylinder block (45). A second one-way valve (52) is arranged on the delivery pipe (51). The stirring device can drive the stirring cylinder (44) to rotate and reciprocate radially. The nozzle (48) moves together with the stirring cylinder (44). The stirring device drives the reagent delivery device to move. The reagent delivery device can provide power for the nozzle (48) to spray paraffin remover. When the stirring cylinder (44) is stirring, the nozzle (48) intermittently sprays paraffin remover; A water injection pipe (54) is arranged on the side wall of the chemical addition tank (25). A valve is arranged on the water injection pipe (54). The top end of the reagent tank (53) is communicated with one end of a round pipe (55). The other end of the round pipe (55) is threadedly connected to a lid (56). An opening (57) is arranged at the top end of the reagent tank (53). A cover plate (58) is arranged on the opening (57). The cover plate (58) is connected to the top end of the reagent tank (53) by screws. A solid particle filling pipe (59) is arranged on the side wall of the chemical addition tank (25).

2. The zero-emission environmental protection oil well ball throwing pigging device according to claim 1, characterized in that, A radio frequency card is arranged inside the digital ball (10). A detection head is arranged at the detection pipe (5).

3. The zero-emission environmental protection type oil well pigging device according to claim 1, characterized in that, A ball pressing weight (11) is arranged at the top inside the ball cabin (9). One end of the ball pressing weight (11) is connected to a suspension rope (12), and the other end of the suspension rope (12) is connected to the top wall of the ball cabin (9).

4. The zero-emission environmental protection type oil well pigging device according to claim 1, characterized in that, The second oil cylinder (7) is installed on the bracket (13). An oil groove (14) is arranged at the bottom of the bracket (13). A hydraulic station (15) is arranged on the oil groove (14). The oil groove (14) is communicated with the hydraulic station (15). The hydraulic station (15) is respectively communicated with the first oil cylinder (3) and the second oil cylinder (7). A solenoid valve (16) and a relief valve (17) are arranged on the hydraulic station (15).

5. A zero-emission environmental protection type oil well pigging device according to claim 1, characterized in that, A control cabinet (18) is arranged at the top end of the bracket (13). A wireless antenna (19) is arranged at the top end of the control cabinet (18).

6. The zero-emission environmental protection type oil well pigging device according to claim 1, characterized in that, A housing (20) is provided at the connection between the second ball delivery pipe (6) and the ball cabin (9). A pressure rod (21) is arranged inside the housing (20). One end of the pressure rod (21) is provided with a pointed nozzle press head (22), and the pointed nozzle press head (22) extends into the ball cabin (9). A convex block (23) is arranged on the pressure rod (21), and the convex block (23) is hinged to the inner wall of the housing (20). The other end of the pressure rod (21) extends into the second ball delivery pipe (6) and contacts the output shaft of the second oil cylinder (7). The diameter of the second piston (8) is larger than the diameter of the output shaft of the second oil cylinder (7). A ball position detector (24) is arranged on the outer wall of the ball cabin (9).

Images