Well repair platform

Abstract

The invention discloses a well repair platform, which relates to the technical field of drilling platforms, and comprises a platform main body, a communicating pipeline, a protection assembly and a pumping and draining pipeline, the platform main body is arranged above a wellhead; the communicating pipeline comprises an upper communicating pipe and a lower communicating pipe, the upper communicating pipe is arranged on the platform body and used for being communicated with liquid pumping equipment, the lower communicating pipe is used for being communicated with a wellhead, and the upper communicating pipe and the lower communicating pipe are connected and communicated; the protection assembly at least can be arranged outside the joint of the upper communicating pipe and the lower communicating pipe in a sleeving mode, and a liquid accumulation cavity can be defined by the protection assembly. And the pumping and draining pipeline is communicated with the liquid accumulation cavity and can also be communicated with liquid pumping equipment. The workover platform provided by the invention can reduce marine environment pollution caused by leakage.

Description

Technical Field

[0001] This invention relates to the field of drilling platform technology, and in particular to a well workover platform. Background Technology

[0002] A well workover platform (generally referring to well workover operations) is an operation for oil drilling and subsequent well maintenance. It is a platform used for maintenance and upkeep measures to ensure that the well can be used smoothly. Well workover platforms are platforms used to perform downhole operations on oil wells to restore or increase production. They are divided into two categories based on the usage scenario: land and sea. Among them, sea platforms need to cope with the complex marine environment.

[0003] Well workover platforms typically require pipelines to connect with the drilling site to facilitate the drainage of oil. However, existing well workover platforms are difficult to handle if pipeline leaks occur, which can easily lead to marine environmental pollution. Summary of the Invention

[0004] The purpose of this invention is to provide a well repair platform to solve the problems existing in the prior art and reduce marine environmental pollution caused by leaks.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] This invention provides a well workover platform, comprising a platform body, connecting pipes, protective components, and pumping pipes; the platform body is positioned above the wellhead; the connecting pipes include an upper connecting pipe and a lower connecting pipe, the upper connecting pipe being disposed on the platform body and used to connect to a pumping device, and the lower connecting pipe being used to connect to the wellhead, the upper connecting pipe being connected to and communicating with the lower connecting pipe; the protective components are at least able to be fitted over the connection between the upper and lower connecting pipes and can form a fluid accumulation chamber; the pumping pipes are connected to the fluid accumulation chamber and can also connect to the pumping device.

[0007] Preferably, the protective assembly includes a protective conduit, the lower end of the upper connecting pipe is detachably connected to the upper end of the lower connecting pipe, the upper end of the protective conduit is detachably connected to the upper connecting pipe, the lower end of the protective conduit is sealed and sleeved outside the lower connecting pipe, and the drainage conduit is connected to the protective conduit and can communicate with the liquid accumulation chamber.

[0008] Preferably, the protective assembly further includes an adjustment mechanism disposed on the platform body, the protective pipeline is capable of changing its length, and the adjustment mechanism is tractively connected to the protective pipeline; the adjustment mechanism can drive the protective pipeline to extend so that the lower end of the lower connecting pipe is sealed and sleeved outside the protective pipeline, so as to form the liquid accumulation cavity.

[0009] Preferably, the protective pipeline includes a fixed sleeve, a telescopic sleeve, and a docking plate. The fixed sleeve is detachably fitted onto the outside of the upper connecting pipe. The upper and lower ends of the telescopic sleeve are fixedly connected to the fixed sleeve and the docking plate, respectively. The docking plate is kinetically connected to the adjusting mechanism. The adjusting mechanism can extend and retract the telescopic sleeve via the docking plate to adjust the position of the docking plate. The docking plate is end-sealed and fitted onto the outside of the protective pipeline.

[0010] Preferably, the adjustment mechanism includes a telescopic component and a drive frame. The telescopic component is disposed on the platform body, the drive end of the telescopic component is connected to the drive frame, and the lower end of the drive frame is connected to the protective pipeline. The telescopic component can drive the drive frame to move up and down to adjust the length of the protective pipeline itself in the vertical direction.

[0011] Preferably, the number of the adjustment mechanisms is set to two, symmetrically arranged on both sides of the protective pipeline; each drive frame includes a support frame and two sets of drive rods, each telescopic component is detachably arranged on the upper side of the platform body, the support frame is detachably arranged on the lower side of the platform body, the two sets of drive rods are symmetrically arranged on both sides of the telescopic component and are connected to the drive end of the telescopic component, each drive rod moves through the platform body and the support frame, and the lower end of each drive rod is connected to the protective pipeline.

[0012] Preferably, the protective assembly further includes multiple telescopic rods, which are symmetrically arranged on both sides of the protective pipeline, and each telescopic rod is detachably rotatably connected to the protective pipeline and the platform body at both ends.

[0013] Preferably, the system further includes a platform base, which is positioned above the wellhead and below the platform body. A lifting mechanism is provided between the platform base and the platform body, which can drive the platform body to move up and down. A through hole is provided on the platform base, and the lower connecting pipe is connected to the platform base and communicates with the wellhead through the through hole.

[0014] Preferably, the platform body includes a supporting top plate, a splicing plate, and a supporting bottom plate arranged sequentially from top to bottom. The splicing plate is formed by splicing multiple splicing pieces distributed circumferentially, with a through hole in the middle. The supporting top plate, the splicing plate, and the supporting bottom plate can be detachably connected. The upper connecting pipe includes an upper guide pipe and a lower guide pipe arranged from top to bottom. The upper guide pipe passes through the supporting top plate, and the lower guide pipe passes through the supporting bottom plate. The upper guide pipe can move vertically relative to the supporting top plate so that it can be connected and communicated with the lower guide pipe through the through hole.

[0015] Preferably, the platform also includes a fence mechanism and a ladder respectively disposed above and on one side of the platform body. The fence mechanism includes a plurality of support shelves distributed circumferentially along the platform body, and each support shelf is detachably connected to the platform body. The ladder is detachably connected to the platform body.

[0016] The present invention achieves the following technical effects compared to the prior art:

[0017] The well workover platform provided by this invention has its main body positioned above the wellhead for easy workover operations. The lower connecting pipe connects to the wellhead and to the upper connecting pipe of the platform body. The upper connecting pipe connects to a pumping device, allowing for the pumping of oil from the wellhead. The upper and lower connecting pipes facilitate assembly and disassembly, reducing the length of individual pipes. Furthermore, a protective component is installed at the connection point of the upper and lower connecting pipes, forming a fluid collection chamber. This allows for the collection of oil in the event of a leak. The leaking oil is then pumped out of the fluid collection chamber via the pumping pipe connected to the fluid collection chamber, preventing excessive pressure within the chamber. This provides emergency protection against oil leaks and reduces marine environmental pollution caused by leaks. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the well repair platform from the front view in this invention;

[0020] Figure 2 This is a side view three-dimensional structural diagram of the well repair platform in this invention;

[0021] Figure 3 This is an exploded view of the well repair platform in this invention;

[0022] Figure 4 This is a perspective view of a portion of the structure of the well repair platform in this invention;

[0023] Figure 5 This is a perspective view of the platform body and the fence mechanism in this invention;

[0024] Figure 6 This is an exploded view of the platform body and the fence mechanism in this invention;

[0025] Figure 7 This is a split view of the main body of the platform in this invention;

[0026] Figure 8 This is a perspective view of the protective component in this invention.

[0027] In the diagram: 1-Well repair platform, 2-Lifting mechanism, 3-Supporting base block, 4-Reinforced base, 5-Connecting conduit, 6-Dialing conduit, 7-Reinforced support seat, 8-Fence mechanism, 9-Protective components, 10-First support partition, 11-Second support partition, 12-Platform body, 13-Upper conduit, 14-Supporting top plate, 15-Fastening screw, 16-Splicing plate, 17-Ladder, 18-Supporting base plate, 19-Lower conduit, 20-Connecting control frame, 21-Telescopic component, 22-Connecting guide rod, 23-Supporting frame, 24-Fastening end block, 25-First hinge rod, 26-Displacement rod, 27-Dialing plate, 28-Telescopic rod, 29-Second hinge rod, 30-Dialing end, 31-First telescopic sleeve, 32-Second telescopic sleeve, 33-Guide control pipe, 34-Fixed sleeve pipe, 35-Connecting branch pipe. Detailed Implementation

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] The purpose of this invention is to provide a well repair platform to solve the problems existing in the prior art and reduce marine environmental pollution caused by leaks.

[0030] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Example 1

[0032] This embodiment provides a well repair platform 1. Please refer to [link / reference]. Figures 1-8 The system includes a platform body 12, connecting pipes, protective components 9, and pumping pipes. The platform body 12 is positioned above the wellhead. The connecting pipes include an upper connecting pipe and a lower connecting pipe. The upper connecting pipe is located on the platform body 12 and is used to connect to the pumping equipment. The lower connecting pipe is used to connect to the wellhead. The upper connecting pipe and the lower connecting pipe are connected and communicate with each other. The protective components 9 can be fitted at least outside the connection between the upper and lower connecting pipes and can form a liquid accumulation chamber. The pumping pipes are connected to the liquid accumulation chamber and can also connect to the pumping equipment.

[0033] The platform body 12 is positioned above the wellhead for easy well repair operations. The lower connecting pipe of the connecting pipeline connects to the wellhead and the upper connecting pipe of the platform body 12. The upper connecting pipe connects to the pumping equipment, allowing for the pumping of oil from the wellhead. The upper and lower connecting pipes facilitate assembly and disassembly, reducing the length of individual pipes. Furthermore, a protective component 9 is installed at the connection point of the upper and lower connecting pipes, forming a liquid accumulation chamber. This chamber collects oil in the event of a leak and pumps it out through the pumping pipeline connected to the liquid accumulation chamber, preventing excessive pressure within the chamber. This provides emergency protection against oil leaks and reduces marine environmental pollution caused by leaks.

[0034] In the optional scheme of this embodiment, more preferably, the protective component 9 includes a protective pipeline, the lower end of the upper connecting pipe is detachably connected to the upper end of the lower connecting pipe, the upper end of the protective pipeline is detachably connected to the upper connecting pipe, the lower end of the protective pipeline is sealed and sleeved outside the lower connecting pipe, and the drainage pipeline is connected to the protective pipeline and can communicate with the liquid accumulation chamber.

[0035] The detachable connection method facilitates disassembly and assembly; by providing overall protection for the lower connecting pipe, leaked oil at the joint can be temporarily collected in the liquid accumulation chamber, preventing oil from flowing out from the bottom of the liquid accumulation chamber.

[0036] In the optional scheme of this embodiment, more preferably, the protective component 9 also includes an adjustment mechanism, which is disposed on the platform body 12. The protective pipeline can change its own length, and the adjustment mechanism is connected to the protective pipeline. The adjustment mechanism can drive the protective pipeline to extend so that the lower end of the protective pipeline is sealed and sleeved outside the lower connecting pipe, so as to form a liquid accumulation cavity.

[0037] The system incorporates an adjustment mechanism that works in conjunction with a protective pipeline capable of changing its length. In the event of a leak, the protective pipeline can be extended to seal and connect with the lower end of the connecting pipe, thus forming a liquid collection chamber to collect the leaked oil. When there is no leak, the protective pipeline can be maintained at its initial length as an emergency protection measure, and it can also be activated for temporary protection in the event of a leak.

[0038] In the optional embodiment, more preferably, the protective pipeline includes a fixed sleeve 34, a telescopic sleeve, and a docking plate 27. The fixed sleeve 34 is detachably sleeved on the outside of the upper connecting pipe. The upper and lower ends of the telescopic sleeve are fixedly connected to the fixed sleeve 34 and the docking plate 27, respectively. The docking plate 27 is connected to the adjustment mechanism. The adjustment mechanism can adjust the position of the docking plate 27 by extending and retracting the telescopic sleeve through the docking plate 27. The docking plate 27 can be end-sealed and sleeved on the outside of the protective pipeline.

[0039] The fixed sleeve 34 can be detachably sleeved onto the lower end of the connecting pipe to achieve connection and communication. The telescopic sleeve includes a first telescopic sleeve 31 and a second telescopic sleeve 32 arranged from bottom to top. The first telescopic sleeve 31 is fixedly connected to the center of the connecting plate 27. The upper end of the first telescopic sleeve 31 is telescopically connected to the second telescopic sleeve 32. The upper end of the second telescopic sleeve 32 is connected to the fixed sleeve 34. The fixed sleeve 34 is connected to the upper connecting pipe to maintain a stable position. The first telescopic sleeve 31 and the second telescopic sleeve 32 adopt a telescopic design. For example, they can be combined into a telescopic tube that can slide relative to each other to adjust the length, or both the first telescopic sleeve 31 and the second telescopic sleeve 32 can be set as telescopic tubes, and both can adjust their own length. The setting of the connecting plate 27 facilitates connection with the adjustment mechanism to realize the overall driving of the protective pipeline.

[0040] In the optional scheme of this embodiment, more preferably, the adjustment mechanism includes a telescopic component 21 and a drive frame. The telescopic component 21 is disposed on the platform body 12, the drive end of the telescopic component 21 is connected to the drive frame, and the lower end of the drive frame is connected to the protective pipeline. The telescopic component 21 can drive the drive frame to move up and down to adjust the length of the protective pipeline itself in the vertical direction.

[0041] The telescopic component 21 is mounted on the platform body 12 and supported by the platform body 12. The lower end of the drive frame is connected to the docking plate 27 at the lower end of the protective pipeline. The vertical telescopic drive enables vertical adjustment of the protective pipeline.

[0042] In the optional scheme of this embodiment, more preferably, the number of adjustment mechanisms is set to two, symmetrically arranged on both sides of the protective pipeline; each drive frame includes a support frame 23 and two sets of drive rods, each telescopic component 21 is detachably arranged on the upper side of the platform body 12, the support frame 23 is detachably arranged on the lower side of the platform body 12, the two sets of drive rods are symmetrically arranged on both sides of the telescopic component 21 and are connected to the drive end of the telescopic component 21, each drive rod moves through the platform body 12 and the support frame 23, and the lower end of each drive rod is connected to the protective pipeline.

[0043] Two adjustment mechanisms are symmetrically arranged on both sides of the protective pipeline to facilitate stable driving of the protective pipeline and prevent tilting. Each driving rod includes a connecting guide rod 22 and a displacement rod 26 fixedly connected from top to bottom. The support frame 23 is detachably fixed to the lower end of the platform body 12 by bolts. The telescopic component 21 is a hydraulic telescopic control seat, which can be detachably fixed to the upper end of the platform body 12 by bolts. The upper end of the telescopic component 21 is telescopically connected to the connecting guide control frame 20. The two ends of the connecting guide control frame 20 are fixedly connected to the connecting guide rods 22. The lower ends of each connecting guide rod 22 sequentially move through the platform body 12 and the support frame 23, and the lower ends of the connecting guide rods 22 are fixedly connected to the displacement rods 26. The lower end of the displacement rods 26 is fixedly connected to the docking plate 27. The lower end of the displacement rods 26 can be connected to the docking plate 27 by threads or screws to realize the connection and drive with the docking plate 27.

[0044] In the optional embodiment, more preferably, the protective component 9 further includes a plurality of telescopic rods 28, which are symmetrically arranged on both sides of the protective pipeline, and the two ends of each telescopic rod 28 are detachably rotatably connected to the protective pipeline and the platform body 12.

[0045] The telescopic rods 28 are all hydraulic telescopic diagonal rods, and the number of them can be set to four, symmetrically arranged around the docking plate 27. In addition, a docking end 30 is fixedly provided on the docking plate 27, and a second hinge rod 29 is fixedly provided on the docking end 30. A hydraulic telescopic diagonal rod is hinged to the second hinge rod 29. The upper end of the hydraulic telescopic diagonal rod is hinged to the first hinge rod 25. The rear end of the first hinge rod 25 is fixedly connected to a fastening end block 24, which can be detachably connected to the bottom of the platform body 12 by screws. When a leakage problem occurs, the hydraulic telescopic control seat can be lowered, causing the connecting guide control frame 20 to lower, changing the position of the connecting guide rod 22, so that... The connecting rod 22 passes through the support frame 23, causing the displacement rod 26 to descend. The displacement rod 26 then causes the docking plate 27 to descend, allowing the docking plate 27 to extend and adjust the first telescopic sleeve 31 and the second telescopic sleeve 32 on the fixed sleeve pipe 34 to cover the lower connecting pipe. When the docking plate 27 moves, the docking end 30 moves accordingly. The docking end 30, through the second hinge rod 29, can pull the hydraulic telescopic diagonal rod to extend in coordination. The hydraulic telescopic diagonal rod is hinged to the fastening end block 24 through the first hinge rod 25, enabling angle coordination during telescopic coordination. The multiple hydraulic telescopic diagonal rods improve the stability during the adjustment process.

[0046] In the optional scheme of this embodiment, more preferably, the well repair platform 1 provided in this embodiment also includes a platform base, which is used to be placed above the wellhead and below the platform body 12. A lifting mechanism 2 is provided between the platform base and the platform body 12, and the lifting mechanism 2 can drive the platform body 12 to rise and fall. A through hole is provided on the platform base, and a lower connecting pipe is connected to the platform base and connected to the wellhead through the through hole.

[0047] The platform base facilitates overall support for the workover platform 1. The lifting mechanism 2 can adjust the height of the platform body 12. The upper and lower connecting pipes can be connected by a sleeve, meaning the upper end of the lower connecting pipe can be detachably sleeved inside the lower end of the upper connecting pipe. The lifting mechanism 2 adjusts the height of the upper connecting pipe by moving the platform body 12, thus achieving the connection between the upper and lower connecting pipes. The lifting mechanism 2 includes hydraulic lifting columns symmetrically arranged on both sides of the lower connecting pipe. The platform base includes a support block 3 and a reinforcing base 4. The upper end of the reinforcing base 4 is fixedly connected to the support block 3. The hydraulic lifting column is installed on the support block 3. The lower connecting pipe is connected to the through hole on the platform base, and the oil is guided and discharged through the wellhead via the through hole.

[0048] The lower connecting pipe includes, from top to bottom, a connecting conduit 5, a docking conduit 6, and a reinforcing support 7 connected in sequence. The center of the supporting base block 3 is provided with a hollow reinforcing support 7, which is connected to a through hole on the platform base. The center of the reinforcing support 7 is connected to the docking conduit 6 by thread or insertion. The upper end of the docking conduit 6 is connected to the connecting conduit 5 by thread or insertion. The connecting conduit 5 is inserted and connected to the lower end of the upper connecting pipe for oil drainage. The docking plate 27 of the protective pipeline can be sealed with the circumferential outer edge of the reinforcing support 7 to form the liquid accumulation chamber.

[0049] In a preferred embodiment, the platform body 12 includes a top support plate 14, a splicing plate 16, and a bottom support plate 18 arranged sequentially from top to bottom. The splicing plate 16 is formed by splicing multiple splicing pieces distributed circumferentially, with a through hole in the middle. The top support plate 14, the splicing plate 16, and the bottom support plate 18 can be detached and connected. The upper connecting pipe includes an upper conduit 13 and a lower conduit 19 arranged from top to bottom. The upper conduit 13 passes through the top support plate 14, and the lower conduit 19 passes through the bottom support plate 18. The upper conduit 13 can move vertically relative to the top support plate 14 so that it can be connected and communicated with the lower conduit 19 through the through hole.

[0050] The lower guide tube 19 is connected to the connecting guide tube 5. The support base plate 18 is connected to the upper part of the hydraulic control column by screw limit. The splicing plate 16 is laid on the support base plate 18. The splicing plate 16 has multiple splicing pieces on its circumference, which can be spliced ​​and combined. It is fastened by longitudinal screws. Then, the support top plate 14 is fixed on the splicing plate 16. After the splicing is completed, the fastening work is carried out by turning the fastening screw 15. The fastening screw 15 is connected to the splicing plate 16 and the support base plate 18 to achieve fastening connection, realize the rapid formation of the platform body 12, realize the carrying capacity of personnel, and facilitate subsequent well repair work. Then, the upper guide tube 13, which is threaded to the support top plate 14, is screwed. The upper guide tube 13 is threaded to the lower guide tube 19 for fastening, realizing the oil drainage work.

[0051] In the optional scheme of this embodiment, more preferably, the well repair platform 1 provided in this embodiment also includes a fence mechanism 8 and a ladder 17 respectively disposed above and on one side of the platform body 12. The fence mechanism 8 includes a plurality of support shelves distributed around the platform body 12, and each support shelf is detachably connected to the platform body 12; the ladder 17 is detachably connected to the platform body 12.

[0052] The support frame includes a first support frame 10 and a second support frame 11 connected in sequence in the circumferential direction. The side end of the first support frame 10 can be fixedly connected to the second support frame 11 by bolts. Both the first support frame 10 and the second support frame 11 can be detachably fixed to the upper end of the support top plate 14 of the platform body 12 by bolts. The fence mechanism 8 can play a protective role. The ladder 17 can be detachably connected to one side of the splicing plate 16 of the platform body 12 by screws, or rotatably connected to one side of the platform body 12 by a pin. The pin adopts a plug-in method to facilitate disassembly and assembly.

[0053] In the optional scheme of this embodiment, more preferably, the drainage pipeline includes a guide control pipe 33 and a connecting branch pipe 35. The drainage pipeline can be set into two sets, symmetrically arranged on both sides of the protective pipeline. The connecting branch pipe 35 is connected to the external liquid pumping equipment. It can be connected to the liquid accumulation chamber in the fixed sleeve pipe 34 through the guide control pipe 33 for drainage treatment, and provide emergency protection against leakage. After personnel arrive, it can be repaired.

[0054] In this embodiment, the well workover platform 1 is first constructed by supporting the base block 3 and reinforcing the base 4 to achieve the support function of the platform base. The lifting mechanism 2 is installed on the supporting base block 3, which can change the overall height of the platform body 12 to facilitate the subsequent connection of the connecting pipe 5, docking pipe 6, lower pipe 19 and upper pipe 13. Then, the docking pipe 6 is installed through the reinforcing support base 7. The docking pipe 6 is connected to the connecting pipe 5, which can guide the oil through the connecting pipe 5 to the lower pipe 19 and upper pipe 13 for oil drainage.

[0055] Afterwards, the platform body 12 can be installed, the lower conduit 19 is connected to the connecting conduit 5, the support base plate 18 is connected to the upper limit of the lifting mechanism 2, the splicing plate 16 is laid on the support base plate 18, the splicing plate 16 has multiple pieces that can be spliced ​​and combined, and is fastened by longitudinal screws. Then, the support top plate 14 is fixed on the splicing plate 16. After the splicing is completed, the fastening work is carried out by turning the fastening screw 15. Then, the upper conduit 13 is turned on, and the upper conduit 13 is threadedly connected to the lower conduit 19 for fastening, so as to realize the oil drainage work.

[0056] When a leak occurs, the telescopic component 21 descends, causing the connecting control frame 20 to descend and changing the position of the connecting rod 22. This causes the connecting rod 22 to pass through the support frame 23, driving the displacement rod 26 to descend. The displacement rod 26 then drives the docking plate 27 to descend, causing the docking plate 27 to extend and adjust the first telescopic sleeve 31 and the second telescopic sleeve 32 on the fixed sleeve pipe 34. This covers the connecting conduit 5, the docking conduit 6, and the reinforcing support seat 7. When the docking plate 27 moves, the docking end 30 moves accordingly. The docking end 30, via the second hinge rod 29, can pull the hydraulic telescopic diagonal rod. When the hydraulic telescopic tie rod is extended, it is hinged to the fastening end block 24 via the first hinge rod 25, which allows for angular engagement during telescopic movement. At this time, the first telescopic sleeve 31, the second telescopic sleeve 32, and the fixed sleeve pipe 34 cover the connecting conduit 5, the docking conduit 6, and the reinforcing support 7, thus replacing the connecting conduit 5, the docking conduit 6, and the reinforcing support 7 for sealing. In order to prevent excessive pressure, the connecting branch pipe 35 is connected to the external drainage equipment, which can drain the contents of the fixed sleeve pipe 34 through the drainage control pipe 33 to provide emergency protection against leakage. After personnel arrive, the work can be repaired and completed.

[0057] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. A well workover platform, characterized in that: include: The main body of the platform is used to be placed above the wellhead; The connecting pipeline includes an upper connecting pipe and a lower connecting pipe. The upper connecting pipe is installed on the platform body and is used to connect to the pumping equipment. The lower connecting pipe is used to connect to the wellhead. The upper connecting pipe is connected to and communicates with the lower connecting pipe. The protective component can be fitted over the connection between the upper and lower connecting pipes and can form a liquid accumulation cavity. and The drainage pipeline is connected to the liquid accumulation chamber, and the drainage pipeline can also be connected to the liquid extraction equipment.

2. The well workover platform according to claim 1, characterized in that: The protective assembly includes a protective conduit, the lower end of the upper connecting pipe is detachably connected to the upper end of the lower connecting pipe, the upper end of the protective conduit is detachably connected to the upper connecting pipe, the lower end of the protective conduit is sealed and sleeved outside the lower connecting pipe, and the drainage conduit is connected to the protective conduit and can communicate with the liquid accumulation chamber.

3. The well workover platform according to claim 2, characterized in that: The protective assembly also includes an adjustment mechanism, which is disposed on the platform body. The protective pipeline can change its length, and the adjustment mechanism is driven to the protective pipeline. The adjustment mechanism can drive the protective pipeline to extend so that the lower end of the protective pipeline is sealed and sleeved outside the lower connecting pipe to form the liquid accumulation cavity.

4. The well workover platform according to claim 3, characterized in that: The protective pipeline includes a fixed sleeve, a telescopic sleeve, and a docking plate. The fixed sleeve is detachably fitted onto the outside of the lower connecting pipe. The upper and lower ends of the telescopic sleeve are fixedly connected to the fixed sleeve and the docking plate, respectively. The docking plate is kinetically connected to the adjustment mechanism. The adjustment mechanism can extend and retract the telescopic sleeve via the docking plate to adjust the position of the docking plate. The docking plate is end-sealed and fitted onto the outside of the protective pipeline.

5. The well workover platform according to claim 3, characterized in that: The adjustment mechanism includes a telescopic component and a drive frame. The telescopic component is mounted on the platform body, and the drive end of the telescopic component is connected to the drive frame. The lower end of the drive frame is connected to the protective pipeline. The telescopic component can drive the drive frame to move up and down to adjust the length of the protective pipeline in the vertical direction.

6. The well workover platform according to claim 5, characterized in that: The number of adjustment mechanisms is set to two, symmetrically arranged on both sides of the protective pipeline; each drive frame includes a support frame and two sets of drive rods, each telescopic component is detachably arranged on the upper side of the platform body, the support frame is detachably arranged on the lower side of the platform body, the two sets of drive rods are symmetrically arranged on both sides of the telescopic component and are connected to the drive end of the telescopic component, each drive rod moves through the platform body and the support frame, and the lower end of each drive rod is connected to the protective pipeline.

7. The well workover platform according to claim 3, characterized in that: The protective assembly also includes multiple telescopic rods, which are symmetrically arranged on both sides of the protective pipeline. Each telescopic rod is detachably rotatably connected to the protective pipeline and the platform body at both ends.

8. The well workover platform according to claim 2, characterized in that: It also includes a platform base, which is used to be placed above the wellhead and below the platform body. A lifting mechanism is provided between the platform base and the platform body, which can drive the platform body to rise and fall. A through hole is provided on the platform base, and the lower connecting pipe is connected to the platform base and connected to the wellhead through the through hole.

9. The well workover platform according to claim 1, characterized in that: The platform body includes a supporting top plate, a splicing plate, and a supporting bottom plate arranged sequentially from top to bottom. The splicing plate is formed by splicing multiple splicing pieces distributed circumferentially, and a through hole is formed in the middle. The supporting top plate, the splicing plate, and the supporting bottom plate can be detached and connected. The upper connecting pipe includes an upper guide tube and a lower guide tube arranged from top to bottom. The upper guide tube passes through the supporting top plate, and the lower guide tube passes through the supporting bottom plate. The upper guide tube can move vertically relative to the supporting top plate so that it can be connected and communicated with the lower guide tube through the through hole.

10. The well workover platform according to claim 1, characterized in that: It also includes a fence mechanism and a ladder respectively disposed above and on one side of the platform body. The fence mechanism includes multiple support shelves distributed around the circumference of the platform body, and each support shelf is detachably connected to the platform body; the ladder is detachably connected to the platform body.

Images