Oil well maintenance platform

Abstract

The oil well maintenance platform comprises a hoisting assembly, an oil pipe clamping mechanism and a protective cover, the oil pipe clamping mechanism comprises an upper clamping assembly and a lower clamping assembly, the lower clamping assembly comprises two clamping jaws, a pipe clamping air cylinder and a supporting seat, the supporting seat is arranged at the bottom of the protective cover, and a through hole is correspondingly formed in the supporting seat; a through hole is formed in the lower clamping assembly, one end of the clamping jaw is arranged in the through hole, the pipe clamping air cylinder is correspondingly arranged above the supporting base and fixedly connected with the clamping jaw, the upper clamping assembly comprises a supporting frame, a fixing plate, an oil pipe cushion block and a hydraulic clamp, the fixing plate is arranged above the lower clamping assembly through the supporting frame, and the oil pipe cushion block is arranged above the fixing plate. The hydraulic clamp is arranged above the oil pipe cushion block, and the oil pipe cushion block and the hydraulic clamp are fixedly connected with the fixing plate through the pushing air cylinder. According to the oil well maintenance platform, efficient, safe and environment-friendly well repair lifting and lowering pipe hoisting is achieved, high-speed, efficient and automatic production is achieved, and reliable guarantee can be provided for automatic and intelligent well repair.

Description

Technical Field

[0001] The invention relates to the technical field of oil well drilling and maintenance, and in particular to an oil well maintenance platform. Background Art

[0002] Downhole operation is a technical means to ensure the normal production of oil and water wells during oilfield exploration and development. Oil and natural gas buried thousands of meters underground are precious underground resources and are indispensable to the modernization of the country, the material and cultural life of the people, and the development of human civilization. In the long-term production process, oil and water wells are constantly corroded by underground oil, gas, and water, gradually age, and have various types of faults, resulting in the inability of oil and water wells to produce normally or even stop production.

[0003] Well repair operation refers to an operation of oil drilling and subsequent oil well maintenance. It is a maintenance and care measure taken to ensure the smooth use of the oil well. The general simple repair and maintenance work of oil and gas wells is called minor repair operation, also known as maintenance operation. Its main contents include sand flushing and pump inspection, wax cleaning and pump inspection, salvaging simple fallen objects, replacing downhole tubing or downhole tools, cementing, pressure measurement, water blocking, water injection well testing, and deployment. The construction team that undertakes these tasks is called a minor repair operation team. The basic method of minor repair operation is to lift and lower the oil pipe, lift the tools in the well through the oil pipe, and then carry out the project construction according to the construction design. After the construction is completed, the updated tools or oil pumps are lowered into the predetermined position in the well through the oil pipe to restart production.

[0004] Traditional oil well maintenance operations have been manually performed for decades. With the increasing level of mechanization, the labor intensity and safety risks of well maintenance operations have been greatly reduced, but the speed of pulling and lowering the tubing during the well maintenance process still restricts the construction efficiency. Summary of the invention

[0005] The purpose of the present invention is to provide an oil well maintenance platform, which can efficiently, safely and environmentally friendlyly lift and lower pipes for well maintenance and has high-speed and efficient automated production, and can provide reliable guarantees for automated and intelligent well maintenance.

[0006] The technical solution adopted by an oil well maintenance platform disclosed in the present invention is:

[0007] An oil well maintenance platform comprises a hoisting assembly, an oil pipe clamping mechanism and a protective cover, wherein a support rod is provided at the lower end of the protective cover, the oil pipe clamping mechanism is arranged in the protective cover, the hoisting assembly is arranged above the oil pipe clamping mechanism through a limit rope, the oil pipe clamping mechanism comprises an upper clamping assembly and a lower clamping assembly, the lower clamping assembly comprises two relatively arranged claws, a clamping pipe clamping cylinder and a support seat, the support seat is arranged at the bottom of the protective cover, and the support seat is correspondingly provided with a through hole, one end of the claw is arranged in the through hole, and the The pipe clamping cylinder is correspondingly arranged above the support seat, and the pipe clamping cylinder is fixedly connected to the claw. The upper clamping assembly includes a support frame, a fixed plate, a tubing pad and a hydraulic pliers. The fixed plate is arranged above the lower clamping assembly through the support frame, and the fixed plate is provided with a through hole corresponding to the claw. The tubing pad is arranged above the fixed plate, and the hydraulic pliers is arranged above the tubing pad. The tubing pad and the hydraulic pliers are respectively located on both sides of the through hole of the fixed plate, and the tubing pad and the hydraulic pliers are fixedly connected to the fixed plate by pushing the cylinder.

[0008] As a preferred solution, the lifting assembly includes a limit frame, a lifting bayonet and a bayonet cylinder. The limit frame surface is provided with a sliding groove, the bottom of the sliding groove is provided with a locking hole, the lifting bayonet is slidably arranged in the sliding groove, the lifting bayonet is provided with an 8-shaped slot, one side of the 8-shaped slot is used to limit the oil pipe, the bayonet cylinder is arranged on one side of the limit frame, the bayonet cylinder is fixedly connected to the lifting bayonet, and a lifting rod ring is fixedly arranged on the surface of the limit frame.

[0009] As a preferred solution, a blocking component is provided above the limit frame, and the blocking component includes a gantry, a blocking head and a blocking cylinder. The blocking cylinder is arranged above the limit frame through the gantry, the blocking head is fixedly connected to the blocking cylinder, and the blocking head is arranged corresponding to the positioning hole.

[0010] As a preferred solution, a ball is provided on the bottom surface of the lifting bayonet, and a spring is provided inside the lifting bayonet corresponding to the ball.

[0011] As a preferred solution, a hollow oil cylinder is provided under the fixing plate, and the hollow oil cylinder is arranged corresponding to the perforations of the fixing plate.

[0012] As a preferred solution, a recovery bucket is provided below the protective cover, a recovery port is provided at the bottom of the recovery bucket, and a connecting flange is provided at the center of the recovery bucket.

[0013] As a preferred solution, a lifting cylinder is provided below the support seat, the output shaft of the lifting cylinder is fixedly connected to the clamping cylinder for clamping the pipe, and the lifting cylinder is provided corresponding to the clamping claw.

[0014] The beneficial effects of an oil well maintenance platform disclosed in the present invention are as follows: a protective cover is first arranged at the oil well, and at the same time, the oil pipe of the oil well passes through the protective cover and the oil pipe clamping mechanism, the upper end of the oil pipe is extended out of the oil pipe clamping mechanism, the lifting assembly is connected to an external lifting device, the lifting device drives the lifting assembly to rise or fall, and the upper end of the oil pipe is clamped and fixed by the lifting assembly, and during the lifting process, the oil pipe pad in the upper clamping assembly moves toward one side of the oil pipe under the action of the pushing cylinder, so that the oil pipe pad can be used to clamp the oil pipe head to avoid the situation of loosening and sudden falling, and the single section of the oil pipe can be disassembled by hydraulic pliers, so as to achieve the purpose of maintenance and replacement of the oil pipe, and the lower clamping assembly below can clamp and fix the oil pipe by claws and pipe clamping cylinder after the oil pipe moves to the specified position, so as to facilitate the maintenance of the oil pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of an oil well maintenance platform of the present invention.

[0016] Figure 2 The diagram is a schematic diagram of the internal structure of an oil well maintenance platform of the present invention.

[0017] Figure 3 The present invention is a schematic structural diagram of an oil pipe clamping mechanism of an oil well maintenance platform.

[0018] Figure 4 The present invention is a schematic diagram of the structure of a hoisting assembly of an oil well maintenance platform.

[0019] Figure 5 It is a cross-sectional view of a limit frame of an oil well maintenance platform of the present invention. DETAILED DESCRIPTION

[0020] The present invention will be further described and illustrated below in conjunction with specific embodiments and accompanying drawings:

[0021] Please refer to Figure 1 , Figure 2 and Figure 3 An oil well maintenance platform includes a hoisting assembly 10, a tubing clamping mechanism 20 and a protective cover 30. A support rod 31 is provided at the lower end of the protective cover 30. The tubing clamping mechanism 20 is arranged in the protective cover 30. The hoisting assembly 10 is arranged above the tubing clamping mechanism 20 through a limiting rope 11.

[0022] The tubing clamping mechanism 20 includes an upper clamping assembly 21 and a lower clamping assembly 22. The lower clamping assembly 22 includes two relatively arranged claws 221, a clamping tube clamping cylinder 222 and a support seat 223. The support seat 223 is arranged at the bottom of the protective cover 30, and the support seat 223 is correspondingly provided with a through hole. One end of the claw 221 is arranged in the through hole. The clamping tube clamping cylinder 222 is correspondingly arranged above the support seat 223. The clamping tube clamping cylinder 222 is fixedly connected to the claw 221. The upper clamping assembly 21 includes a support frame 211, a fixed The fixed plate 212, the oil pipe pad 213 and the hydraulic pliers 214, the fixed plate 212 is arranged above the lower clamping assembly 22 through the support frame 211, the fixed plate 212 is provided with a through hole corresponding to the claw 221, the oil pipe pad 213 is arranged above the fixed plate 212, the hydraulic pliers 214 are arranged above the oil pipe pad 213, the oil pipe pad 213 and the hydraulic pliers 214 are respectively located on both sides of the through hole of the fixed plate 212, and the oil pipe pad 213 and the hydraulic pliers 214 are fixedly connected to the fixed plate 212 by pushing the cylinder 215.

[0023] First, the protective cover 30 is set at the oil well, and the oil pipe of the oil well passes through the protective cover 30 and the oil pipe clamping mechanism 20, and the upper end of the oil pipe is extended out of the oil pipe clamping mechanism 20, and the lifting assembly 10 is connected to the external lifting equipment, and the lifting equipment drives the lifting assembly 10 to rise or fall, and the upper end of the oil pipe is clamped and fixed by the lifting assembly 10. During the lifting process, the oil pipe pad 213 in the upper clamping assembly 21 moves toward one side of the oil pipe under the action of the pushing cylinder 215, so that the oil pipe pad 213 can be used to clamp the oil pipe head to avoid loosening and sudden falling. The hydraulic pliers 214 can be used to disassemble the single section of the oil pipe, so as to maintain and replace the oil pipe, and the lower clamping assembly 22 below can use the claws 221 and the pipe clamping cylinder 222 to clamp and fix the oil pipe after the oil pipe moves to the specified position, so as to facilitate the maintenance of the oil pipe.

[0024] Please refer to Figure 4 In the above scheme, the lifting component 10 includes a limit frame 12, a lifting bayonet 13 and a bayonet cylinder 14. The surface of the limit frame 12 is provided with a sliding groove 121, and the bottom of the sliding groove 121 is provided with a locking hole. The lifting bayonet 13 is slidably set in the sliding groove 121. The lifting bayonet 13 is provided with an 8-shaped slot 131, and one side of the 8-shaped slot 131 is used to limit the oil pipe. The bayonet cylinder 14 is arranged on one side of the limit frame 12, and the bayonet cylinder 14 is fixedly connected to the lifting bayonet 13. The surface of the limit frame 12 is fixedly provided with a lifting rod ring 15.

[0025] When the oil pipe needs to be hoisted, the lifting rod eye 15 above the limit frame 12 is fixed to the external lifting equipment and is lowered under the drive of the external lifting equipment, so that one end of the oil pipe is inserted from one side of the 8-shaped slot 131. After the oil pipe is inserted, the 8-shaped slot 131 moves to the other side under the push of the bayonet cylinder 14, so that the other side of the 8-shaped slot 131 clamps the upper end of the oil pipe, so that the limit frame 12 can pull the oil pipe up and down.

[0026] A blocking assembly 40 is provided above the limiting frame 12, and the blocking assembly 40 includes a gantry 41, a blocking head 42 and a blocking cylinder 43. The blocking cylinder 43 is arranged above the limiting frame 12 through the gantry 41, and the blocking head 42 is fixedly connected to the blocking cylinder 43, and the blocking head 42 is arranged corresponding to the positioning hole.

[0027] When the oil pipe is being hoisted, in order to prevent the residual oil in the oil pipe from leaking from the upper end of the oil pipe, the sealing head 42 is driven downward by the sealing cylinder 43, so that the opening at the upper end of the oil pipe is sealed by the sealing head 42, and the sealing component 40 is arranged on the limiting frame 12 and can move with the limiting frame 12, thereby avoiding oil leakage and providing safety and environmental protection.

[0028] Please refer to Figure 5 A ball 16 is provided on the bottom surface of the lifting bayonet 13, and a spring 17 is provided inside the lifting bayonet 13 corresponding to the ball 16. The ball 16 improves the smoothness of the lifting bayonet 13 when it is pushed, and facilitates sliding. When the lifting bayonet 13 and the oil pipe are clamped and lifted, the ball 16 and the spring 17 are subjected to force, thereby forming an extrusion, so that the ball 16 is pressed into the lifting bayonet 13, and the bottom surface of the lifting bayonet 13 is in contact with the limit frame 12 to reduce rolling friction, and the spring 17 ensures that the ball 16 can be pushed out of the lifting bayonet 13 without external force.

[0029] A hollow oil cylinder 216 is provided under the fixed plate 212. The hollow oil cylinder 216 corresponds to the perforation setting of the fixed plate 212. When the oil pipe is clamped by the upper clamping assembly 21, the oil pipe needs to pass through the hollow oil cylinder 216. Therefore, the hollow oil cylinder 216 and the upper clamping assembly 21 can be used to cooperate to disassemble or assemble part of the oil pipe, and the position of the oil pipe joint can be accurately controlled. It perfectly cooperates with the hydraulic clamp 214 and automatic lifting to facilitate automated implementation.

[0030] A recovery barrel 32 is provided under the protective cover 30, a recovery port is provided at the bottom of the recovery barrel 32, and a connecting flange is provided at the center of the recovery barrel 32. The oil pipe is passed through the recovery barrel 32 through the connecting flange, and the recovery barrel 32 is used to collect and recover the oil leaked from the surface of the oil pipe when it is hoisted, thereby preventing the leaked oil from polluting the environment.

[0031] A lifting cylinder 224 is provided under the support seat 223, and the output shaft of the lifting cylinder 224 is fixedly connected to the pipe clamping cylinder 222. The lifting cylinder 224 is arranged corresponding to the claw 221. The lifting cylinder 224 can slide the claw 221 up and down by means of the lifting cylinder, so as to cooperate with the pipe clamping cylinder 222 to better clamp the oil pipe, that is, when rising, the claw 221 is taken away from the through hole, thereby achieving the effect of loosening, and when descending, the claw 221 is clamped into the through hole, thereby achieving the purpose of locking.

[0032] The present invention provides an oil well maintenance platform. A protective cover is first arranged at the oil well. At the same time, the oil pipe of the oil well passes through the protective cover and the oil pipe clamping mechanism, the upper end of the oil pipe is extended out of the oil pipe clamping mechanism, and the hoisting assembly is connected with an external hoisting device. The hoisting device drives the hoisting assembly to rise or fall, and the upper end of the oil pipe is clamped and fixed by the hoisting assembly. During the hoisting process, the oil pipe cushion block in the upper clamping assembly moves toward one side of the oil pipe under the action of the pushing cylinder, so that the oil pipe cushion block can clamp the oil pipe head to avoid the situation of loosening and sudden falling. The single section of the oil pipe can be disassembled by hydraulic pliers, so as to achieve the purpose of maintenance and replacement of the oil pipe. Moreover, the lower clamping assembly below can clamp and fix the oil pipe by claws and the pipe clamping cylinder after the oil pipe moves to the specified position, so as to facilitate the maintenance of the oil pipe.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the present invention.

Claims

1. An oil well maintenance platform, It is characterized in that It includes a hoisting assembly, a tubing clamping mechanism and a protective cover, wherein a support rod is provided at the lower end of the protective cover, the tubing clamping mechanism is arranged in the protective cover, the hoisting assembly is arranged above the tubing clamping mechanism through a limit rope, the tubing clamping mechanism includes an upper clamping assembly and a lower clamping assembly, the lower clamping assembly includes two relatively arranged claws, a tubing clamping cylinder and a support seat, the support seat is arranged at the bottom of the protective cover, and the support seat is correspondingly provided with a through hole, one end of the claw is arranged in the through hole, and the tubing clamping cylinder The cylinder is correspondingly arranged above the support seat, the pipe clamping cylinder is fixedly connected to the claw, the upper clamping assembly includes a support frame, a fixed plate, a tubing pad and a hydraulic pliers, the fixed plate is arranged above the lower clamping assembly through the support frame, the fixed plate is provided with a through hole corresponding to the claw, the tubing pad is arranged above the fixed plate, the hydraulic pliers is arranged above the tubing pad, the tubing pad and the hydraulic pliers are respectively located on both sides of the through hole of the fixed plate, and the tubing pad and the hydraulic pliers are fixedly connected to the fixed plate by pushing the cylinder.

2. An oil well maintenance platform as claimed in claim 1, It is characterized in that The lifting assembly includes a limit frame, a lifting bayonet and a bayonet cylinder. The limit frame surface is provided with a sliding groove, the bottom of the sliding groove is provided with a locking hole, the lifting bayonet is slidably set in the sliding groove, the lifting bayonet is provided with an 8-shaped slot, one side of the 8-shaped slot is used to limit the oil pipe, the bayonet cylinder is arranged on one side of the limit frame, the bayonet cylinder is fixedly connected to the lifting bayonet, and a lifting rod ring is fixedly provided on the surface of the limit frame.

3. An oil well maintenance platform as claimed in claim 2, It is characterized in that A blocking component is provided above the limiting frame, and the blocking component includes a gantry, a blocking head and a blocking cylinder. The blocking cylinder is arranged above the limiting frame through the gantry, the blocking head is fixedly connected to the blocking cylinder, and the blocking head is arranged corresponding to the positioning hole.

4. An oil well maintenance platform as claimed in claim 3, It is characterized in that A ball is arranged on the bottom surface of the lifting bayonet, and a spring is arranged inside the lifting bayonet corresponding to the ball.

5. An oil well maintenance platform as claimed in claim 1, It is characterized in that A hollow oil cylinder is arranged below the fixing plate, and the hollow oil cylinder is arranged corresponding to the perforations of the fixing plate.

6. An oil well maintenance platform as claimed in claim 1, It is characterized in that A recovery bucket is provided below the protective cover, a recovery port is provided at the bottom of the recovery bucket, and a connecting flange is provided at the center of the recovery bucket.

7. An oil well maintenance platform as claimed in claim 1, It is characterized in that A lifting cylinder is provided below the support seat, the output shaft of the lifting cylinder is fixedly connected to the clamping cylinder for clamping the pipe, and the lifting cylinder is provided corresponding to the clamping claw.

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