175MPa ultrahigh pressure erosion-resistant throttling kill manifold with sand prevention structure

Abstract

The 175MPa ultrahigh pressure erosion-resistant throttling kill manifold comprises a sand prevention assembly, the sand prevention assembly is connected into a pipeline and connected with a sand collection pressure relief bin, the sand prevention assembly comprises a sand prevention net, the sand prevention net is arranged in the pipeline, a net cleaning assembly is arranged at the position of the sand prevention net, and the sand collection pressure relief bin is connected with the sand collection pressure relief bin. When the sand prevention net is blocked, the net cleaning assembly can scrape blocking objects on the sand prevention net into the sand collection pressure relief bin. The sand prevention assembly is arranged, sand in the manifold is intercepted through the sand prevention net, stratum sand is prevented from entering the manifold, erosion of a valve, a throttling opening and other key components is reduced, and the service life of the manifold is prolonged; and the sand prevention assembly is connected with the sand collection pressure relief bin, when the manifold pressure exceeds the safety limit, pressure relief can be conducted at the position of the sand prevention assembly, flowing liquid in the manifold is temporarily discharged to the sand collection pressure relief bin, the manifold pressure is reduced, and safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of well control manifold technology, specifically a 175MPa ultra-high pressure erosion resistant throttling well control manifold with a sand-proof structure. Background Technology

[0002] In the production operation of oil and gas wells in oilfields, in order to prevent sudden accidents such as well kicks and blowouts and to achieve effective control of oil and gas well pressure, it is necessary to equip the well control manifold.

[0003] The main function of the kill manifold is to control well kicks and blowouts using mud. Specifically, it does so in three ways: First, when the wellhead is sealed by the full-sealing gate, heavy mud is forcibly pumped into the wellbore through the kill manifold to carry out well control operations. Second, when a blowout occurs, clean water is forcibly injected into the wellhead through the kill manifold to prevent combustion and fire. Third, when a blowout has occurred and a fire has broken out, fire extinguishing agent is forcibly injected into the wellbore through the kill manifold to help extinguish the fire.

[0004] During operation, formation sand particles can easily enter the manifold, causing erosion of critical components such as valves and throttles, reducing the service life of the manifold and potentially leading to safety accidents. Summary of the Invention

[0005] This invention provides a 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-prevention structure includes a sand-prevention component connected in a pipeline and connected to a sand collection and pressure relief chamber. The sand-prevention component includes a sand-prevention mesh disposed in the pipeline. A mesh cleaning component is provided at the sand-prevention mesh. When the sand-prevention mesh is blocked, the mesh cleaning component can scrape the blockage on the sand-prevention mesh into the sand collection and pressure relief chamber.

[0008] Preferably, the sand control net is in the form of a pipe network. One end of the sand control net is fixedly connected to an inlet pipe, which is connected to an inlet end. The other end of the sand control net is fixedly connected to a sand discharge pipe, which is connected to a sand collection and pressure relief chamber through a sand discharge end. A flow-gathering hood is provided on the outer periphery of the sand control net, and the flow-gathering hood is fixedly connected to the sand discharge pipe and the inlet pipe located at both ends of the sand control net. An outlet pipe is connected to the flow-gathering hood, which is connected to an outlet end.

[0009] Preferably, a return pipeline is provided between the sand collection and pressure relief chamber and the outlet end, and a one-way valve is provided on the return pipeline.

[0010] Preferably, the cleaning mesh assembly includes a sand removal bowl, which is slidably connected to the inner wall of the sandproof mesh, and the sand removal bowl is in contact with the inner wall of the sandproof mesh;

[0011] The sand removal bowl is fixedly connected to the sand removal frame, and a first limiting ring is fixedly connected to the sand removal frame. One end of a first spring is sleeved on the first limiting ring, and the other end of the first spring is connected to a slot. The slot is fixedly connected to the inner wall of the sand discharge pipe.

[0012] Preferably, a pressure relief port is provided at the center of the sand removal bowl, a pressure relief core is slidably connected to the pressure relief port, and a second spring is provided between the pressure relief core and the sand removal frame.

[0013] Preferably, a second limiting ring is fixedly connected to the sand removal frame, the pressure relief core is slidably connected to the second limiting ring, one end of the second spring is sleeved on the second limiting ring, and the other end of the second spring is fixedly connected to the pressure relief core;

[0014] A first sealing ring is provided at the contact point between the pressure relief core and the pressure relief port, and the first sealing ring is fixedly connected to the sand removal bowl.

[0015] Preferably, the sand collection and pressure relief chamber is provided with a sand cleaning and maintenance port, the sand cleaning and maintenance port includes a fixed pipe fixedly connected to the sand collection and pressure relief chamber, and a cover plate is provided on the upper side of the fixed pipe;

[0016] A fixing plate is provided on the outer periphery of the cover plate, and a second positioning plate is fixedly connected to the fixing plate;

[0017] A first positioning plate is fixedly connected to the fixed tube, and a positioning rod is rotatably connected to the first positioning plate. The first positioning plate and the second positioning plate are rotatably connected through the positioning rod.

[0018] Preferably, the fixing tube is provided with a first buckle and a second buckle block, and the first buckle and the second buckle block are respectively located on different halves of the fixing tube;

[0019] The fixing plate is provided with a first locking block and a second locking buckle, and the first locking block and the second locking buckle are respectively located on different halves of the fixing plate;

[0020] The first and second buckles are L-shaped;

[0021] The second locking block can be engaged in the second latch, and the first locking block can be engaged in the first latch.

[0022] Preferably, a second sealing ring is provided between the fixing pipe and the fixing plate, and the second sealing ring is fixedly connected to the fixing pipe;

[0023] The second sealing ring is hollow inside, and an inflation tube is provided on the second sealing ring, with a valve provided on the inflation tube.

[0024] Preferably, a limiting tube is fixedly connected to the fixed tube, a limiting pin is provided inside the limiting tube, the limiting pin is elastically slidably connected to the limiting tube, and the fixed plate is provided with a socket corresponding to the limiting pin.

[0025] Compared with the prior art, the present invention has at least the following beneficial effects:

[0026] This application incorporates a sand-prevention component that uses a sand-prevention mesh to intercept sand and gravel in the manifold, preventing formation sand particles from entering the manifold, reducing erosion of critical components such as valves and throttles, and extending the service life of the manifold.

[0027] Furthermore, the sand control component is connected to the sand collection and pressure relief chamber. When the manifold pressure exceeds the safety limit, the sand control component can release pressure, temporarily draining the liquid in the manifold to the sand collection and pressure relief chamber, reducing the manifold pressure and ensuring safety. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the main structure of the present invention;

[0029] Figure 2 This is a cross-sectional view of the sand-proof component structure of the present invention;

[0030] Figure 3 This is a schematic diagram of the pressure relief core connection structure of the present invention;

[0031] Figure 4 This is an exploded view of the sand cleaning and maintenance port structure of the present invention;

[0032] Figure 5 This is a schematic diagram of the cover plate structure of the present invention;

[0033] Figure 6 This is a schematic diagram of the fixed tube structure of the present invention.

[0034] In the diagram: 1. Sand control component; 2. Inlet end; 3. Outlet end; 4. Sand discharge end; 5. Sand collection and pressure relief chamber; 6. Sand cleaning and maintenance port; 7. Check valve; 8. Return pipeline; 9. Sand discharge pipe; 10. Slot; 11. First spring; 12. Sand removal frame; 13. First limit ring; 14. Second spring; 15. Sand control mesh; 16. Pressure relief port; 17. Sand removal bowl; 18. Inlet pipe; 19. Concentrator; 20. Outlet pipe ; 21. Pressure relief core; 22. Second limiting ring; 25. First sealing ring; 26. Fixing tube; 27. First buckle; 28. First positioning plate; 29. ​​Limiting tube; 30. Limiting pin; 31. Positioning rod; 32. Second sealing ring; 33. Cover plate; 34. Fixing plate; 35. Second positioning plate; 36. Handle; 37. First locking block; 38. Second buckle; 39. Second locking block; 40. Inflation tube. Detailed Implementation

[0035] In this invention, the terms "first," "second," etc., are used for descriptive purposes only and do not specifically refer to any order or sequence, nor are they intended to limit the invention. They are merely used to distinguish protective components or operations described using the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0036] Example 1:

[0037] Please refer to Figure 1 A 175MPa ultra-high pressure erosion resistant throttling and kill manifold with a sand-prevention structure includes a sand-prevention component 1 connected in a pipeline and connected to a sand collection and pressure relief chamber 5. The sand-prevention component 1 includes a sand-prevention net 15 disposed in the pipeline. A net-cleaning component is provided at the sand-prevention net 15. When the sand-prevention net 15 is blocked, the net-cleaning component can scrape the blockage on the sand-prevention net 15 into the sand collection and pressure relief chamber 5.

[0038] The working principle and beneficial effects of the above scheme are as follows:

[0039] This application sets up a sand control component 1, which intercepts sand and gravel in the manifold through a sand control net 15, preventing formation sand particles from entering the manifold, reducing erosion of key components such as valves and throttle ports, and improving the service life of the manifold.

[0040] Furthermore, the sand control component 1 is connected to the sand collection and pressure relief chamber 5. When the manifold pressure exceeds the safety limit, the sand control component 1 can release pressure and temporarily discharge the liquid in the manifold to the sand collection and pressure relief chamber 5 to reduce the manifold pressure and ensure safety.

[0041] Example 2:

[0042] Please refer to Figures 1-3 Based on Embodiment 1, the sand control net 15 is in the form of a pipe network. One end of the sand control net 15 is fixedly connected to an inlet pipe 18, which is connected to an inlet end 2. The other end of the sand control net 15 is fixedly connected to a sand discharge pipe 9, which is connected to a sand collection and pressure relief chamber 5 through a sand discharge end 4. A flow-gathering hood 19 is provided on the outer periphery of the sand control net 15, and the flow-gathering hood 19 is fixedly connected to the sand discharge pipe 9 and the inlet pipe 18 located at both ends of the sand control net 15. An outlet pipe 20 is connected to the flow-gathering hood 19, which is connected to an outlet end 3.

[0043] The working principle and beneficial effects of the above scheme are as follows:

[0044] The liquid flowing into the inlet pipe 18 from the inlet end 2 will pass through the sand screen 15. The sand screen 15 intercepts the sand and gravel in the liquid, preventing the sand and gravel from entering the downstream manifold and eroding key components such as valves and throttling ports.

[0045] The liquid flowing through the sandproof mesh 15 is collected in the flow-collecting hood 19 and enters the rear pipeline through the outlet pipe 20. A diffusion buffer cavity is formed between the sandproof mesh 15 and the flow-collecting hood 19, which can effectively prevent erosion.

[0046] The sandproof mesh 15 is designed as a pipe network structure in the same direction as the inlet pipe 18, so that the sand and gravel entering will not directly impact the sandproof mesh 15, effectively reducing the wear of the sandproof mesh 15.

[0047] Example 3:

[0048] Please refer to Figures 1-3 Based on Example 1, a return pipeline 8 is provided between the sand collection and pressure relief chamber 5 and the outlet end 3, and a one-way valve 7 is provided on the return pipeline 8.

[0049] The cleaning assembly includes a sand removal bowl 17, which is slidably connected to the inner wall of the sandproof net 15, and the sand removal bowl 17 is in contact with the inner wall of the sandproof net 15.

[0050] The sand removal bowl 17 is fixedly connected to the sand removal frame 12. A first limiting ring 13 is fixedly connected to the sand removal frame 12. One end of a first spring 11 is sleeved on the first limiting ring 13. The other end of the first spring 11 is connected to the slot 10. The slot 10 is fixedly connected to the inner wall of the sand discharge pipe 9.

[0051] A pressure relief port 16 is provided at the center of the sand removal bowl 17, and a pressure relief core 21 is slidably connected to the pressure relief port 16. A second spring 14 is provided between the pressure relief core 21 and the sand removal frame 12.

[0052] A second limiting ring 22 is fixedly connected to the sand removal frame 12, the pressure relief core 21 is slidably connected to the second limiting ring 22, one end of the second spring 14 is sleeved on the second limiting ring 22, and the other end of the second spring 14 is fixedly connected to the pressure relief core 21;

[0053] A first sealing ring 25 is provided at the contact point between the pressure relief core 21 and the pressure relief port 16, and the first sealing ring 25 is fixedly connected to the sand removal bowl 17.

[0054] The working principle and beneficial effects of the above scheme are as follows:

[0055] As sand and gravel in the flowing liquid are continuously intercepted by the sand-proof net 15, the sand and gravel will become clogged on the sand-proof net 15, causing the pressure inside the sand-proof net 15 to increase continuously. This will push the sand removal bowl 17 to move towards the sand discharge pipe 9, compress the first spring 11, and increase the exposure area of ​​the sand-proof net 15 to ensure the passage of the flowing liquid. When the sand removal bowl 17 moves to the limit position, the exposure area of ​​the sand-proof net 15 can no longer increase, but the continuously increasing flowing liquid will squeeze the pressure relief core 21, compress the second spring 14, open the pressure relief port 16, and the flowing liquid will carry the sand and gravel from the pressure relief port 16 to the sand collection and pressure relief chamber 5. When the pressure inside the sand-proof net 15 decreases, the first spring 11 rebounds, driving the sand removal bowl 17 to move and scrape the inside of the sand-proof net 15, causing the sand and gravel remaining on the sand-proof net 15 to fall off, further ensuring the interception effect of the sand-proof net 15.

[0056] The sandproof net 15 is automatically cleaned by the cleaning component, which greatly reduces the frequency of replacement and maintenance of the sandproof net 15 and reduces maintenance costs.

[0057] Furthermore, when the pressure inside the sandproof mesh 15 is too high and the sandproof mesh 15 is not completely blocked, the pressure relief port 16 will still open under pressure to relieve pressure and reduce safety hazards.

[0058] Example 4:

[0059] Please refer to Figures 4-6 Based on Example 1, the sand collection and pressure relief chamber 5 is provided with a sand cleaning and maintenance port 6. The sand cleaning and maintenance port 6 includes a fixed pipe 26 fixedly connected to the sand collection and pressure relief chamber 5, and a cover plate 33 is provided on the upper side of the fixed pipe 26.

[0060] A fixing plate 34 is provided on the outer periphery of the cover plate 33, and a second positioning plate 35 is fixedly connected to the fixing plate 34;

[0061] A first positioning plate 28 is fixedly connected to the fixed tube 26, and a positioning rod 31 is rotatably connected to the first positioning plate 28. The first positioning plate 28 and the second positioning plate 35 are rotatably connected through the positioning rod 31.

[0062] The fixing tube 26 is provided with a first buckle 27 and a second buckle block 39, and the first buckle 27 and the second buckle block 39 are respectively located on different halves of the fixing tube 26;

[0063] The fixing plate 34 is provided with a first locking block 37 and a second locking buckle 38, and the first locking block 37 and the second locking buckle 38 are respectively located on different halves of the fixing plate 34;

[0064] The first buckle 27 and the second buckle 38 are L-shaped;

[0065] The second locking block 39 can be locked into the second latch 38, and the first locking block 37 can be locked into the first latch 27.

[0066] A second sealing ring 32 is provided between the fixed tube 26 and the fixed plate 34, and the second sealing ring 32 is fixedly connected to the fixed tube 26.

[0067] The second sealing ring 32 is hollow inside, and an inflation tube 40 is provided on the second sealing ring 32, and a valve is provided on the inflation tube 40.

[0068] A limiting tube 29 is fixedly connected to the fixed tube 26. A limiting pin 30 is provided inside the limiting tube 29. The limiting pin 30 is elastically slidably connected to the limiting tube 29. A socket corresponding to the limiting pin 30 is provided on the fixed plate 34.

[0069] The working principle and beneficial effects of the above scheme are as follows:

[0070] The cover plate 33 of the sand cleaning and maintenance port 6 is rotatably connected to the fixed pipe 26 through the positioning rod 31. The positioning rod 31 bears the weight of the cover plate 33, so that the cover plate 33 can be easily opened even when the cover plate 33 is large and heavy (opening the cover plate 33 only requires overcoming the sliding resistance between the cover plate 33 and the positioning rod 31, and a bearing can also be installed between the two to further reduce friction).

[0071] When closing the cover plate 33, rotate the cover plate 33 so that the cover plate 33 rotates around the positioning rod 31. The first locking block 37 on the cover plate 33 moves into the first latch 27, and the bent end of the second latch 38 is also locked on the second locking block 39, thus completing the closing of the cover plate 33.

[0072] By inflating the hollow second sealing ring 32, the second sealing ring 32 expands, enhancing the sealing effect between the cover plate 33 and the fixing tube 26. The expanded second sealing ring 32 also reduces the stress on the positioning rod 31, preventing the positioning rod 31 from deforming under long-term static load.

[0073] The setting of the limiting pin 30 enables the cover plate 33 to be accurately aligned with the fixing tube 26.

[0074] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure, characterized in that, It includes a sand control component, which is connected to the pipeline and to the sand collection and pressure relief chamber. The sand control component includes a sand control net, which is installed in the pipeline. A net cleaning component is installed at the sand control net. When the sand control net is blocked, the net cleaning component can scrape the blockage on the sand control net into the sand collection and pressure relief chamber.

2. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 1, characterized in that, The sand control net is in the shape of a pipe network. One end of the sand control net is fixedly connected to an inlet pipe, which is connected to the inlet end. The other end of the sand control net is fixedly connected to a discharge pipe, which is connected to the sand collection and pressure relief chamber through the discharge end. A flow-gathering hood is installed on the outer periphery of the sand control net, and the flow-gathering hood is fixedly connected to the discharge pipe and the inlet pipe located at both ends of the sand control net. An outlet pipe is connected to the flow-gathering hood, which is connected to the outlet end.

3. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 2, characterized in that, A return pipeline is installed between the sand collection and pressure relief chamber and the outlet end, and a one-way valve is installed on the return pipeline.

4. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 2, characterized in that, The cleaning mesh assembly includes a sand removal bowl, which is slidably connected to the inner wall of the sand-proof mesh, and the sand removal bowl is in close contact with the inner wall of the sand-proof mesh; The sand removal bowl is fixedly connected to the sand removal frame, and a first limiting ring is fixedly connected to the sand removal frame. One end of the first spring is sleeved on the first limiting ring, and the other end of the first spring is connected to the slot. The slot is fixedly connected to the inner wall of the sand discharge pipe.

5. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 4, characterized in that, A pressure relief port is provided at the center of the sand removal bowl, and a pressure relief core is slidably connected to the pressure relief port. A second spring is provided between the pressure relief core and the sand removal frame.

6. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 5, characterized in that, A second limiting ring is fixedly connected to the sand removal frame, a pressure relief core is slidably connected to the second limiting ring, one end of the second spring is sleeved on the second limiting ring, and the other end of the second spring is fixedly connected to the pressure relief core; A first sealing ring is provided at the contact point between the pressure relief core and the pressure relief port, and the first sealing ring is fixedly connected to the sand removal bowl.

7. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 1, characterized in that, The sand collection and pressure relief chamber is equipped with a sand cleaning and maintenance port, which includes a fixed pipe that is fixedly connected to the sand collection and pressure relief chamber, and a cover plate is provided on the upper side of the fixed pipe. A fixing plate is provided on the outer periphery of the cover plate, and a second positioning plate is fixedly connected to the fixing plate; A first positioning plate is fixedly connected to the fixed tube, and a positioning rod is rotatably connected to the first positioning plate. The first positioning plate and the second positioning plate are rotatably connected through the positioning rod.

8. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 7, characterized in that, The fixing tube is provided with a first buckle and a second buckle, and the first buckle and the second buckle are located on different halves of the fixing tube respectively; The fixing plate is provided with a first locking block and a second locking buckle, and the first locking block and the second locking buckle are located on different halves of the fixing plate respectively; The first and second buckles are L-shaped; The second locking block can be engaged in the second latch, and the first locking block can be engaged in the first latch.

9. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 7, characterized in that, A second sealing ring is provided between the fixed pipe and the fixed plate, and the second sealing ring is fixedly connected to the fixed pipe. The second sealing ring is hollow inside, and an inflation tube is installed on the second sealing ring, with a valve installed on the inflation tube.

10. A 175MPa ultra-high pressure erosion-resistant throttling and kill manifold with a sand-control structure according to claim 7, characterized in that, A limiting tube is fixedly connected to the fixed tube, and a limiting pin is provided inside the limiting tube. The limiting pin is elastically slidably connected to the limiting tube, and the fixed plate is provided with a socket corresponding to the limiting pin.

Images