CN217151905U

CN217151905U - Anti-leakage oil field water injection wellhead device

Info

Publication number: CN217151905U
Application number: CN202123434846.0U
Authority: CN
Inventors: 柳朝阳; 胡生龙
Original assignee: Yanchang Oil Field Co Ltd
Current assignee: Yanchang Oil Field Co Ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-08-09
Anticipated expiration: 2031-12-31

Abstract

The utility model discloses an antiseep oil field water injection well head device, including first four-way pipe, the top rigid coupling of first four-way pipe has the second four-way pipe, and the horizontal pipe tip rigid coupling of first four-way pipe has sealed lid, and one side rigid coupling that sealed lid is close to first four-way pipe has the connecting rod that the level set up, and the pole body rigid coupling of connecting rod has the sealing ring, and the pole body of connecting rod has cup jointed sealed unit, sealed unit and sealing ring phase-match, and the tip rigid coupling that sealed lid was kept away from to the connecting rod has the mount, the inner wall rigid coupling of mount and first four-way pipe. The utility model discloses a set up sealed end cap and sealing ring to set up the second four-way pipe, at the device water injection in-process, if take place the oil return phenomenon, can in time seal first four-way pipe right-hand member, avoid fluid to leak, also can release the oil pressure through opening the relief valve simultaneously, avoid the device to transship and lead to damaging, also for overhauing the time of providing.

Description

Anti-leakage oil field water injection wellhead device

Technical Field

The utility model belongs to the technical field of water injection well head equipment, concretely relates to antiseep oil field water injection well head device.

Background

Water injection wells are wells used to inject water into oil formations. In the process of oil field development, water is injected into an oil reservoir through a special water injection well, so that the pressure of an oil layer is maintained or recovered, the oil reservoir has stronger driving force, and the exploitation rate and the recovery rate of the oil reservoir are improved.

Traditional oil field water injection well head device during the use, through to the inside water injection in-process in oil field, when oil field internal pressure was too big, caused backward flow phenomenon easily to lead to fluid to produce through the water injection well head and leak, for this reason, we propose a antiseep oil field water injection well head device, mainly used solves the above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an antiseep oil field water injection well head device has solved among the prior art water injection process and has appeared the backward flow phenomenon and lead to fluid to produce the problem of leaking through the water injection well head.

The utility model adopts the technical proposal that: antiseep oil field water injection well head device, including first four-way pipe, the top rigid coupling of first four-way pipe has the second four-way pipe, a horizontal pipe tip rigid coupling of first four-way pipe has sealed lid, the connecting rod that one side rigid coupling that sealed lid is close to first four-way pipe has the level to set up, the pole body rigid coupling of connecting rod has the sealing ring, the pole body of connecting rod has cup jointed sealed unit, sealed unit and sealing ring phase-match, the tip rigid coupling that sealed lid was kept away from to the connecting rod has the mount, the inner wall rigid coupling of mount and first four-way pipe.

The utility model is also characterized in that,

the sealing unit comprises a sealing plug, one side of the sealing plug is fixedly connected with a sealing plug, the sealing plug and the sealing plug are both sleeved on the rod body of the connecting rod, and the sealing plug are both matched with the sealing ring;

a spring is fixedly connected to one side, far away from the sealing plug, of the sealing plug, the spring is sleeved on a rod body of the connecting rod, a threaded rod is fixedly connected to the end, close to the fixing frame, of the connecting rod, and the threaded rod is in threaded connection with the fixing frame;

a first limiting block and a second limiting block are fixedly connected to the rod body of the connecting rod, the first limiting block is arranged between the spring and the fixing frame, and the second limiting block is arranged on one side, away from the sealing plug, of the sealing plug;

a bearing is fixedly connected to the rod body of the connecting rod, the bearing is arranged between the sealing cover and the second limiting block, a supporting frame is fixedly connected to the outer ring of the bearing, a sliding groove is formed in the inner wall of the first four-way pipe, and the frame body of the supporting frame is matched with the sliding groove;

the end part, far away from the fixed frame, of the first four-way pipe is fixedly connected with a connecting ring, the outer wall of the connecting ring is provided with threads, and the connecting ring is connected with the sealing cover through the threads;

the end part of the connecting rod, which is far away from the fixed frame, penetrates through the sealing cover, the end part of the connecting rod, which penetrates out of the sealing cover, is fixedly connected with a rotating disc, and a plurality of handles are fixedly connected to the outer wall of the rotating disc along the circumferential direction of the rotating disc;

a plurality of rotating handles are fixedly connected to the outer wall of the sealing cover along the circumferential direction;

the four pipe bodies of the second four-way pipe are connected with pressure relief valves, and the four pressure relief valves are arranged close to the end part of the second four-way pipe;

the end part of the first four-way pipe far away from the second four-way pipe is connected with a pressure gauge.

The utility model has the advantages that:

1. through setting up sealed end cap and sealing ring to set up the second four-way pipe, at device water injection in-process, if take place the oil return phenomenon, can in time seal first four-way pipe right-hand member, avoid fluid to leak, also can release the oil pressure through opening the relief valve simultaneously, avoid the device to transship and lead to damaging, also for overhauing the time of providing.

2. Through the arrangement of the sealing plug, the sealing plug and the sealing ring can generate friction loss to lead to the situation of untight sealing, the sealing ring is sealed in one step, and the safety of the device is improved.

3. The connecting rod is driven to rotate by rotating the rotating disc, the threaded rod at the right end of the connecting rod is separated from the connection with the fixing frame, then the sealing cover is taken out from the connecting ring by rotating the rotating handle, the connecting rod can be taken out from the inside of the first four-way pipe, the aim of replacing and maintaining the sealing plug, the sealing plug and the spring conveniently is achieved, the supporting frame can be used for supporting and positioning, and the connecting rod can be taken out and installed conveniently.

4. Through setting up the stopper, can prescribe a limit to the gliding position of sealing plug, avoid under water injection hydraulic influence, lead to sealing plug and sealed plug to produce too big pulling force to the spring, lead to the spring to become invalid to influence the sealed effect of device.

Drawings

FIG. 1 is a schematic structural view of the anti-seepage oilfield flooding wellhead assembly of the present invention;

FIG. 2 is a schematic view of the internal structure of a first four-way pipe in the anti-seepage oilfield flooding wellhead assembly of the present invention;

FIG. 3 is the utility model discloses the inner structure schematic diagram of sealing ring among the antiseep oil field water injection well head device

Figure 4 is the utility model discloses the local structure schematic diagram of connecting rod in the antiseep oil field water injection well head device.

In the figure: 1. a first four-way pipe; 2. a second four-way pipe; 3. a pressure relief valve; 4. a handle; 5. a pressure gauge; 6. a fixed mount; 7. a seal ring; 8. a chute; 9. a support frame; 10. a bearing; 11. a connecting ring; 12. a sealing cover; 13. rotating the handle; 14. a connecting rod; 15. rotating the disc; 16. a first stopper; 17. a sealing plug; 18. sealing the plug; 19. a spring; 20. a threaded rod; 21. and a second limiting block.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

An anti-leakage oilfield water injection wellhead device is shown in a figure 1-2 and comprises a first four-way pipe 1, wherein a second four-way pipe 2 is fixedly connected to the top of the first four-way pipe 1, a sealing cover 12 is fixedly connected to one end of a horizontal pipe of the first four-way pipe 1, a connecting rod 14 horizontally arranged is fixedly connected to one side, close to the first four-way pipe 1, of the sealing cover 12, a sealing ring 7 is fixedly connected to a rod body of the connecting rod 14, a sealing unit is sleeved on a rod body of the connecting rod 14 and matched with the sealing ring 7, a fixing frame 6 is fixedly connected to the end, far away from the sealing cover 12, of the connecting rod 14, and the fixing frame 6 is fixedly connected with the inner wall of the first four-way pipe 1.

Four pipe shafts of second four-way pipe 2 all are connected with relief valve 3, and four relief valves 3 all are close to the tip setting of second four-way pipe 2. At device water injection in-process, if take place the oil return phenomenon, the 1 right-hand member of first four-way pipe that can be timely seals, avoids fluid to leak, releases the oil pressure through opening relief valve 3 simultaneously, avoids the device to transship and leads to damaging, also provides time for the maintenance.

The end part of the first four-way pipe 1 far away from the second four-way pipe 2 is connected with a pressure gauge 5.

As shown in fig. 3, the sealing unit includes a sealing plug 17, a sealing plug 18 is fixedly connected to one side of the sealing plug 17, the sealing plug 17 and the sealing plug 18 are both sleeved on the rod body of the connecting rod 14, the sealing plug 17 and the sealing plug 18 are both matched with the sealing ring 7, the sealing plug 17 is in a circular truncated cone structure, and the section of the sealing plug 17 close to the sealing plug 18 is a small interface.

A spring 19 is fixedly connected to one side, away from the sealing plug 17, of the sealing plug 18, the spring 19 is sleeved on the rod body of the connecting rod 14, a threaded rod 20 is fixedly connected to the end, close to the fixing frame 6, of the connecting rod 14, and the threaded rod 20 is in threaded connection with the fixing frame 6. When water injection starts, water enters from the bottom of the first four-way pipe 1, and under the influence of water pressure, the sealing plug 18 and the sealing plug 17 stretch the spring 19 to slide along the connecting rod 14 to the left side and separate from the inside of the sealing ring 7, so that water flow is injected into the oil field through the first four-way pipe 1.

The shaft body of the connecting rod 14 is fixedly connected with a first limiting block 16 and a second limiting block 21, the first limiting block 16 is arranged between the spring 19 and the fixing frame 6, and the second limiting block 21 is arranged on one side of the sealing plug 17 far away from the sealing plug 18. The arrangement of the first limiting block 16 and the second limiting block 21 can limit the sliding position of the sealing plug 17, so that the sealing plug 17 and the sealing plug are prevented from generating overlarge tension on the spring under the influence of water pressure of water injection, the spring 19 is prevented from losing efficacy, and the sealing effect of the device is influenced

As shown in fig. 4, a bearing 10 is fixedly connected to a rod body of the connecting rod 14, the bearing 10 is disposed between the sealing cover 12 and the second limiting block 21, a supporting frame 9 is fixedly connected to an outer ring of the bearing 10, a sliding groove 8 is formed in an inner wall of the first four-way pipe 1, and a frame body of the supporting frame 9 is matched with the sliding groove 8. The support frame 9 supports the connecting rod 14, and when the device is disassembled and repaired, the connecting rod 14 is drawn out from the first four-way pipe 1, and the support frame 9 slides along the sliding groove 8.

The end part of the first four-way pipe 1 far away from the fixed frame 6 is fixedly connected with a connecting ring 11, the outer wall of the connecting ring 11 is provided with threads, and the connecting ring 11 is in threaded connection with the sealing cover 12.

The end part of the connecting rod 14 far away from the fixed frame 6 penetrates through the sealing cover 12, the end part of the connecting rod 14 penetrating through the sealing cover 12 is fixedly connected with a rotating disc 15, and a plurality of handles 4 are fixedly connected to the outer wall of the rotating disc 15 along the circumferential direction of the rotating disc.

The outer wall of the sealing cover 12 is fixedly connected with a plurality of rotating handles 13 along the circumferential direction.

The utility model discloses antiseep oil field water injection well head device's theory of operation does:

in the in-process of using, at first, be connected second four-way pipe 2 top and left and right sides both ends with the liquid storage pot respectively, in to the inside water injection in-process of oil field through 1 right-hand member of first four-way pipe, under hydraulic influence, sealed end cap 18 and sealing plug 17 can produce the tensile horizontal slip along connecting rod 14 to spring 19, break away from the inside of sealing ring 7, thereby inside the first four-way pipe 1 injection oil field of rivers, when the oil return phenomenon takes place in the oil field, under oil hydraulic pressure effect, can produce the extrusion to sealing plug 17 and sealed end cap 18, make sealed end cap 18 sealed sealing ring 7, avoid fluid to leak, when fluid continues to rise, the operator can open relief valve 3, make fluid flow into inside the oil storage pot of being connected through second four-way pipe 2, thereby release the oil pressure, strive for the time for the overhaul of the equipment. When the device needs to be overhauled, the handheld rotating handle 13 rotates, the sealing cover 12 is taken down from the connecting ring 11, meanwhile, the rotating disc 15 rotates to drive the connecting rod 14 to rotate, the middle part of the connecting rod 14 rotates in the inner ring of the bearing 10, and then the threaded rod 20 is driven to rotate in the fixing frame 6, so that the connecting rod 14 can be taken out from the first four-way pipe 1, and the sealing plug 17, the sealing plug 18 and other components are replaced and maintained.

The utility model discloses antiseep oil field water injection well head device is through setting up sealed end cap and sealing ring to set up the second four-way pipe, at device water injection in-process, if take place the oil return phenomenon, can in time seal first four-way pipe right-hand member, avoid fluid to leak, also can release the oil pressure through opening the relief valve simultaneously, avoid the device to transship and lead to damaging, also provide time for the maintenance.

Claims

1. Antiseep oil field water injection well head device, its characterized in that, including first four-way pipe (1), the top rigid coupling of first four-way pipe (1) has second four-way pipe (2), the horizontal pipe tip rigid coupling of first four-way pipe (1) has sealed lid (12), one side rigid coupling that sealed lid (12) are close to first four-way pipe (1) has connecting rod (14) that the level set up, the pole body rigid coupling of connecting rod (14) has sealing ring (7), the pole body of connecting rod (14) has cup jointed sealed unit, sealed unit and sealing ring (7) phase-match, the tip rigid coupling that sealed lid (12) was kept away from in connecting rod (14) has mount (6), the inner wall rigid coupling of mount (6) and first four-way pipe (1).

2. The anti-leakage oilfield water injection wellhead device according to claim 1, wherein the sealing unit comprises a sealing plug (17), a sealing plug (18) is fixedly connected to one side of the sealing plug (17), the sealing plug (17) and the sealing plug (18) are both sleeved on a rod body of the connecting rod (14), and the sealing plug (17) and the sealing plug (18) are both matched with the sealing ring (7).

3. The wellhead device for preventing the water flooding in the oil field of the anti-leakage claim 2, characterized in that a spring (19) is fixedly connected to one side of the sealing plug (18) far away from the sealing plug (17), the spring (19) is sleeved on the rod body of the connecting rod (14), a threaded rod (20) is fixedly connected to the end part of the connecting rod (14) close to the fixing frame (6), and the threaded rod (20) is in threaded connection with the fixing frame (6).

4. The wellhead device for preventing water flooding in oil fields of leakage as claimed in claim 1, characterized in that the shaft of said connecting rod (14) is fixedly connected with a first stopper (16) and a second stopper (21), said first stopper (16) is disposed between the spring (19) and the fixing frame (6), said second stopper (21) is disposed on the side of the sealing plug (17) away from the sealing plug (18).

5. The wellhead device for water injection in the anti-leakage oilfield according to claim 1, wherein a bearing (10) is fixedly connected to a rod body of the connecting rod (14), the bearing (10) is arranged between the sealing cover (12) and the second limiting block (21), a supporting frame (9) is fixedly connected to an outer ring of the bearing (10), a sliding groove (8) is formed in the inner wall of the first four-way pipe (1), and a frame body of the supporting frame (9) is matched with the sliding groove (8).

6. The wellhead device for anti-leakage oilfield flooding according to claim 1, wherein the end part of the first four-way pipe (1) far away from the fixing frame (6) is fixedly connected with a connecting ring (11), the outer wall of the connecting ring (11) is provided with threads, and the connecting ring (11) is in threaded connection with the sealing cover (12).

7. The wellhead device for anti-leakage oilfield flooding according to claim 1, wherein the end of the connecting rod (14) far away from the fixed frame (6) penetrates through the sealing cover (12), the end of the connecting rod (14) penetrating through the sealing cover (12) is fixedly connected with a rotating disc (15), and the outer wall of the rotating disc (15) is fixedly connected with a plurality of handles (4) along the circumferential direction of the rotating disc.

8. The wellhead device for anti-seepage oilfield flooding according to claim 1, characterized in that a plurality of rotating handles (13) are fixedly connected to the outer wall of the sealing cover (12) along the circumferential direction thereof.

9. The anti-leakage oilfield flooding wellhead device according to claim 1, wherein the four pipe bodies of the second four-way pipe (2) are connected with pressure relief valves (3), and the four pressure relief valves (3) are arranged close to the end of the second four-way pipe (2).

10. The anti-leakage oilfield flooding wellhead device according to claim 1, characterized in that the end of the first four-way pipe (1) far away from the second four-way pipe (2) is connected with a pressure gauge (5).