Skid-mounted wellhead pressure relief reinjection device

Abstract

The utility model provides a skid-mounted wellhead pressure relief reinjection device, and belongs to the technical field of water injection wells. The skid-mounted wellhead pressure relief reinjection device comprises a connecting base and a discharge filtering mechanism, external pipes are installed on the two sides of the top of the connecting base, valves are installed on the outer sides of the external pipes, a filtering box is movably connected to the left sides of the valves, connecting pipes are fixedly connected to the two sides of the filtering box, and the filtering box is connected with the valves through the connecting pipes. The filtering seat is movably connected into the filtering box, a filtering opening is formed in the top of the filtering seat, by arranging the discharging filtering mechanism, when the external pipe is matched with the connecting base to work, filtering and impurity removing work can be carried out on liquid discharged by the external pipe, meanwhile, a user can conveniently and regularly clean and maintain the interior, and the practicability is high. And the situation that the interior of the external pipe is difficult to clean and maintain regularly during discharging work is avoided, so that the filtering, cleaning and maintaining convenience of the discharging pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water injection wells, in particular to a skid-mounted wellhead pressure relief and re-injection device. Background Art

[0002] The skid-mounted wellhead pressure relief and reinjection device is mainly used for wellhead pressure control and downhole fluid reinjection management during oil and gas exploration and production. The entire device adopts a skid-mounted structure, which is convenient for rapid installation and disassembly on site and improves operational flexibility. When the wellhead pressure is too high, the pressure can be released by adjusting the valve to avoid dangerous accidents such as blowouts. The depressurized downhole fluid can be reinjected into the formation through a pipeline, which can not only recycle resources but also achieve harmless treatment of waste. It is widely used in onshore and offshore oil and gas fields, especially suitable for use under complex geological conditions. It can effectively control wellhead pressure and reduce accident risks. Since the liquid inside the well body carries impurities when it is discharged, it is necessary to filter the discharged liquid.

[0003] In the related art, during the use of the wellhead pressure relief and reinjection device, a filter sleeve is generally installed on the outside of the external discharge pipe to filter impurities in the discharge process of the external discharge pipe, so that the device can be used.

[0004] However, during the use of the wellhead pressure relief and reinjection device, since the filter sleeve mainly filters through the internal filter holes or other filter media, and the filter holes and the filter sleeve are integrated, when the filter sleeve is blocked or damaged, the entire filter sleeve needs to be disassembled and replaced, affecting the convenience of external pipe filtration maintenance. Utility Model Content

[0005] In order to make up for the above deficiencies, the utility model provides a skid-mounted wellhead pressure relief and reinjection device that overcomes the above technical problems or at least partially solves the above problems.

[0006] The utility model is achieved in this way:

[0007] The utility model provides a skid-mounted wellhead pressure relief and re-injection device, comprising a connecting base, the top of the connecting base is provided with external pipes on both sides, and valves are installed on the outside of the external pipes;

[0008] An external exhaust filtering mechanism, the external exhaust filtering mechanism comprising:

[0009] Filter box; the filter box is movably connected to the left side of the valve, and connecting pipes are fixedly connected to both sides of the filter box, and the filter box is connected to the valve through the connecting pipes;

[0010] Filter seat; the filter seat is movably connected to the inside of the filter box, and a filter port is opened on the top of the filter seat;

[0011] The filter screen is movably connected to both sides of the inner wall of the filter port, and the inner part of the filter port is movably connected to a stabilizing frame located inside the filter screen;

[0012] Opening and closing sealing mechanism; the opening and closing sealing mechanism is arranged on the top of the filter box.

[0013] In a preferred embodiment, the opening and closing sealing mechanism includes an opening and closing port, a rubber plate and an opening and closing plate, wherein the opening and closing port is opened at the top of the filter box, the rubber plate is movably connected inside the opening and closing port, and the opening and closing plate is fixedly connected to the top of the rubber plate.

[0014] In a preferred solution, a pressing frame is movably connected inside the filter port, the outer side of the pressing frame contacts the inner side of the stabilizing frame, and the top of the pressing frame is fixedly connected to the bottom of the rubber plate.

[0015] In a preferred solution, connection grooves are provided at the top and bottom of both sides of the inner wall of the filter port, and connection blocks are movably connected to both sides of the connection grooves, and the inner side of the connection block is fixedly connected to the outer side of the stabilizing frame.

[0016] In a preferred solution, both sides of the bottom of the inner wall of the filter seat are provided with collecting ports located outside the filter port, and the bottom of the inner wall of the collecting port is fixedly connected with a collecting net.

[0017] In a preferred solution, a stabilizing opening is provided on the left and right sides of both sides of the filter seat, and a stabilizing bar is movably connected inside the stabilizing opening, and the outer side of the stabilizing bar is fixedly connected to the inner wall of the filter box.

[0018] In a preferred solution, both sides of the top of the filter box are fixedly connected with positioning seats located outside the opening and closing plate, and the top of the positioning seat is movably connected with a positioning plate located on the top of the opening and closing plate.

[0019] In a preferred solution, a movable cavity is provided at the top of the positioning seat, a movable seat is rotatably connected inside the movable cavity, and the top of the movable seat is fixedly connected to the bottom of the positioning plate.

[0020] The utility model provides a skid-mounted wellhead pressure relief and re-injection device, the beneficial effects of which include:

[0021] 1. By setting up an external filter mechanism, the liquid discharged from the external pipe can be filtered and impurities removed when the external pipe cooperates with the connecting base. At the same time, it is convenient for users to regularly clean and maintain the internal part, avoiding the situation where it is difficult to regularly clean and maintain the internal part when the external pipe is working. Therefore, the convenience of filtering, cleaning and maintenance of the external pipe is improved.

[0022] 2. By setting up an opening and closing sealing mechanism, when the filter seat cooperates with the filter screen, the user can open and close the sealed filter box to regularly clean and maintain the filter seat and the filter screen, avoiding the situation where it is difficult to open and close the filter box when using it, thereby improving the convenience of opening and closing the filter box.

[0023] 3. By setting a tightening frame, a tightening stabilizing force can be applied to the stabilizing frame when the stabilizing frame is used with the filter, so as to avoid position deviation of the stabilizing frame during operation, resulting in a change in the position of the filter, thereby improving the stabilizing effect of the stabilizing frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is an overall stereogram provided by the embodiment of the utility model;

[0026] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of a filter box provided in an embodiment of the utility model;

[0027] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a filter seat provided in an embodiment of the utility model;

[0028] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of an opening and closing plate provided in an embodiment of the utility model;

[0029] In the figure: 1. connecting base; 2. external pipe; 3. valve; 4. filter box; 5. connecting pipe; 6. filter seat; 7. filter port; 8. filter net; 9. stabilizing frame; 10. opening and closing port; 11. rubber sheet; 12. opening and closing plate; 13. tightening frame; 14. connecting groove; 15. connecting block; 16. collecting port; 17. collecting net; 18. stabilizing port; 19. stabilizing strip; 20. positioning seat; 21. positioning plate; 22. movable cavity; 23. movable seat. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1-Figure 4 The utility model provides a technical solution: a skid-mounted wellhead pressure relief and reinjection device, including a connecting base 1 and an external discharge filtering mechanism, the top of the connecting base 1 is equipped with external pipes 2 on both sides, and the outer side of the external pipe 2 is equipped with a valve 3, which can filter and remove impurities from the liquid discharged from the external pipe 2 when the external pipe 2 cooperates with the connecting base 1. At the same time, it is convenient for users to regularly clean and maintain the inside, avoiding the situation that it is difficult to regularly clean and maintain the inside when the external pipe 2 is working, thereby improving the convenience of filtering, cleaning and maintenance of the external pipe.

[0032] Reference Figure 1-Figure 4 In a preferred embodiment, the external filter mechanism includes a filter box 4, which is movably connected to the left side of the valve 3. Both sides of the filter box 4 are fixedly connected with connecting pipes 5. The filter box 4 is connected to the valve 3 through the connecting pipes 5. The filter seat 6 is movably connected to the inside of the filter box 4. A filter port 7 is provided on the top of the filter seat 6. A filter screen 8 is movably connected to both sides of the inner wall of the filter port 7. The inside of the filter port 7 is movably connected with a stabilizing frame 9 located inside the filter screen 8. An opening and closing sealing mechanism is arranged on the top of the filter box 4. The filter box 4 and the valve 3 are installed and connected through the connecting pipe 5. When the external pipe 2 is in external discharge operation, the filter seat 6 cooperates with the filter screen 8 to When the external discharge pipe is discharging, impurities in the liquid are filtered. At the same time, the stabilizing frame 9 cooperates with the filter port 7 to stabilize the filter screen 8 during filtering. The opening and closing sealing mechanism includes an opening and closing port 10, a rubber plate 11 and an opening and closing plate 12. The opening and closing port 10 is opened at the top of the filter box 4, the rubber plate 11 is movably connected to the inside of the opening and closing port 10, and the opening and closing plate 12 is fixedly connected to the top of the rubber plate 11. When the filter seat 6 cooperates with the filter screen 8, the user can open and close the sealed filter box 4 to provide space for regular cleaning and maintenance of the filter seat 6 and the filter screen 8, thereby avoiding the situation where it is difficult to open and close the filter box 4 when it is in use, thereby improving the convenience of opening and closing the filter box 4.

[0033] Reference Figure 2-Figure 3In a preferred embodiment, a pressing frame 13 is movably connected inside the filter port 7, the outer side of the pressing frame 13 contacts the inner side of the stabilizing frame 9, and the top of the pressing frame 13 is fixedly connected to the bottom of the rubber plate 11. When the stabilizing frame 9 is used in conjunction with the filter net 8, a pressing stabilizing force can be applied to the stabilizing frame 9 to avoid positional displacement of the stabilizing frame 9 during operation, which causes the position of the filter net 8 to change, thereby improving the stabilizing effect of the stabilizing frame 9. Connection grooves 14 are provided at the top and bottom of both sides of the inner wall of the filter port 7, and connection blocks 15 are movably connected to both sides of the connection grooves 14. The inner side of the connection block 15 is fixedly connected to the outer side of the stabilizing frame 9. When the stabilizing frame 9 is used in conjunction with the filter net 8, a connection guiding work can be performed between the stabilizing frame 9 and the filter port 7 to avoid the up and down movement of the stabilizing frame 9 during operation, thereby improving the working stability of the stabilizing frame 9.

[0034] Reference Figure 2-Figure 3 In a preferred embodiment, collecting ports 16 located outside the filter port 7 are provided on both sides of the bottom of the inner wall of the filter seat 6, and a collecting net 17 is fixedly connected to the bottom of the inner wall of the collecting port 16. When the filter seat 6 cooperates with the filter net 8 to work, the impurities filtered by the filter net 8 can be lowered and collected to avoid the difficulty in collecting impurities when the filter seat 6 is working, thereby improving the impurity collection effect of the filter seat 6. Stable ports 18 are provided on the left and right sides of both sides of the filter seat 6. The inside of the stable port 18 is movably connected with a stabilizing bar 19. The outside of the stabilizing bar 19 is fixedly connected to the inner wall of the filter box 4. When the filter seat 6 cooperates with the filter net 8 to work, the connection between the filter seat 6 and the filter box 4 can be stabilized to avoid the position displacement of the filter frame due to the flow force of the liquid inside the filter box 4 when the filter frame is working, thereby improving the connection stability between the filter seat 6 and the filter box 4.

[0035] Reference Figure 4 In a preferred embodiment, by fixing the positioning seats 20 located on the outside of the opening and closing plate 12 on both sides of the top of the filter box 4, the top of the positioning seat 20 is movably connected with the positioning plate 21 located on the top of the opening and closing plate 12, which can provide the user with a medium for positioning between the opening and closing plate 12 and the opening and closing port 10 when the opening and closing plate 12 is used in conjunction with the opening and closing port 10, thereby avoiding the situation where the opening and closing plate 12 is difficult to position when in use, thereby improving the convenience of positioning the opening and closing plate 12, and the top of the positioning seat 20 is provided with a movable cavity 22, and the inside of the movable cavity 22 is rotatably connected with a movable seat 23, and the top of the movable seat 23 is fixedly connected to the bottom of the positioning plate 21, so that when the positioning seat 20 cooperates with the positioning plate 21 to work, the positioning plate 21 and the positioning seat 20 can be rotatably connected, thereby avoiding the situation where the positioning plate 21 is separated from the positioning seat 20 when working, thereby improving the connection effect between the positioning plate 21 and the positioning seat 20.

[0036] Specifically, the working process or working principle of the skid-mounted wellhead pressure relief and reinjection device is as follows: when in use, the filter seat 6 is held by hand to drive the stabilizing port 18 to move, and the filter seat 6 drives the stabilizing port 18 to align with the stabilizing bar 19, and the filter seat 6 is placed and installed in the filter box 4 through the opening and closing port 10 to cooperate with the stabilizing port 18. At this time, the stabilizing bar 19 enters the stabilizing port 18 to connect and stabilize the filter seat 6 and the filter box 4, and then the stabilizing frame 9 is held by hand to move toward the inside of the filter port 7. At this time, the connecting block 15 follows the stabilizing frame 9 to move inside the connecting groove 14 to guide the connection between the stabilizing frame 9 and the filter port 7. Subsequently, the two filter nets 8 are held by hand and placed on both sides of the inside of the filter port 7, and the filter nets 8 are located on the outside of the stabilizing frame 9, and the stabilizing frame 9 is held by hand to move outward to stabilize the filter nets 8 and the filter port 7, and then the opening and closing plate 12 is held by hand to drive the abutting frame 13 to move through the rubber plate 11, and the bottom of the abutting frame 13 enters the stabilizing frame 9, and moves the opening and closing plate 12 downward to drive the rubber plate 11 into the opening and closing opening 10 to close and seal the opening and closing opening 10. At the same time, the pressing frame 13 applies a limiting pressing force to the stabilizing frame 9 to ensure that the stabilizing frame 9 stably presses and stabilizes the filter screen 8. Then, the positioning plate 21 is moved and rotated to the top of the opening and closing plate 12 to cooperate with the positioning seat 20 to position the opening and closing plate 12 and the filter box 4. At the same time, the movable seat 23 follows the positioning plate 21 to move inside the movable cavity 22 to rotate and connect the positioning plate 21 and the positioning seat 20. Then, the filter box 4 and the valve 3 are installed and connected through the connecting pipe 5. When the external pipe 2 is discharged, the filter seat 6 cooperates with the filter screen 8 to filter the impurities in the liquid when the external pipe is discharged. At the same time, the collecting port 16 cooperates with the collecting net 17 to concentrate the impurities that move downward after being filtered by the filter screen 8, so that the user can subsequently clean the impurities filtered by the filter screen 8.

[0037] It should be noted that the connecting base 1, the external pipe 2 and the valve 3 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.

Claims

1. A skid-mounted wellhead pressure relief and re-injection device, comprising a connection base (1), the top of the connection base (1) having external pipes (2) installed on both sides, the outer side of the external pipe (2) being installed with a valve (3), characterized in that ； An external exhaust filtering mechanism, the external exhaust filtering mechanism comprising: A filter box (4); the filter box (4) is movably connected to the left side of the valve (3), and connecting pipes (5) are fixedly connected to both sides of the filter box (4), and the filter box (4) is connected to the valve (3) through the connecting pipes (5); A filter seat (6); the filter seat (6) is movably connected to the inside of the filter box (4), and a filter port (7) is provided on the top of the filter seat (6); A filter screen (8); the filter screen (8) is movably connected to two sides of the inner wall of the filter port (7); the interior of the filter port (7) is movably connected to a stabilizing frame (9) located inside the filter screen (8); An opening and closing sealing mechanism; the opening and closing sealing mechanism is arranged on the top of the filter box (4).

2. A skid-mounted wellhead pressure relief and re-injection device according to claim 1, characterized in that: The opening and closing sealing mechanism comprises an opening and closing opening (10), a rubber plate (11) and an opening and closing plate (12); the opening and closing opening (10) is opened at the top of the filter box (4); the rubber plate (11) is movably connected to the inside of the opening and closing opening (10); and the opening and closing plate (12) is fixedly connected to the top of the rubber plate (11).

3. A skid-mounted wellhead pressure relief and re-injection device according to claim 2, characterized in that: The filter port (7) is movably connected to a pressing frame (13) inside, the outer side of the pressing frame (13) contacts the inner side of the stabilizing frame (9), and the top of the pressing frame (13) is fixedly connected to the bottom of the rubber plate (11).

4. A skid-mounted wellhead pressure relief and re-injection device according to claim 3, characterized in that: The top and bottom of both sides of the inner wall of the filter port (7) are provided with connection grooves (14), both sides of the connection groove (14) are movably connected with connection blocks (15), and the inner side of the connection block (15) is fixedly connected to the outer side of the stabilizing frame (9).

5. The skid-mounted wellhead pressure relief and re-injection device according to claim 1, characterized in that: Collection ports (16) located outside the filter port (7) are provided on both sides of the bottom of the inner wall of the filter seat (6), and a collection net (17) is fixedly connected to the bottom of the inner wall of the collection port (16).

6. The skid-mounted wellhead pressure relief and re-injection device according to claim 1, characterized in that: The filter seat (6) is provided with a stabilizing opening (18) on both the left and right sides, the stabilizing opening (18) is movably connected to a stabilizing bar (19) inside, and the outer side of the stabilizing bar (19) is fixedly connected to the inner wall of the filter box (4).

7. The skid-mounted wellhead pressure relief and re-injection device according to claim 2, characterized in that: Both sides of the top of the filter box (4) are fixedly connected to positioning seats (20) located outside the opening and closing plate (12), and the top of the positioning seat (20) is movably connected to a positioning plate (21) located on the top of the opening and closing plate (12).

8. The skid-mounted wellhead pressure relief and re-injection device according to claim 7, characterized in that: The top of the positioning seat (20) is provided with a movable cavity (22), the interior of the movable cavity (22) is rotatably connected to a movable seat (23), and the top of the movable seat (23) is fixedly connected to the bottom of the positioning plate (21).

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