CN220365550U - Self-blowing machine pumping integrated well completion wellhead sealing device - Google Patents
Self-blowing machine pumping integrated well completion wellhead sealing device Download PDFInfo
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- CN220365550U CN220365550U CN202321085367.9U CN202321085367U CN220365550U CN 220365550 U CN220365550 U CN 220365550U CN 202321085367 U CN202321085367 U CN 202321085367U CN 220365550 U CN220365550 U CN 220365550U
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- sealing
- sealing device
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- 238000007789 sealing Methods 0.000 title claims abstract description 85
- 238000005086 pumping Methods 0.000 title claims abstract description 21
- 238000007664 blowing Methods 0.000 title claims description 13
- 210000002445 nipple Anatomy 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 17
- 230000001502 supplementing effect Effects 0.000 claims description 4
- 230000010354 integration Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model relates to a self-injection machine-pumping integrated well completion wellhead sealing device which comprises a sealing cover, wherein a lubricator is connected in an upper port of the sealing cover in an internal rotation mode, a supporting pipe is connected in the lubricator in an inserted mode, a supporting block is connected in a lower port of the supporting pipe in an inserted mode, a packing pressing cap is arranged in the supporting block and connected with a connecting nipple arranged in a lower port of the sealing cover, and the connecting nipple is fixedly connected with the inner wall of the sealing cover. The second sealing device of sealed well head pressure is regarded as to this application, guarantees well control safety. The device can improve the bearing capacity and reliability of the mechanical pumping wellhead, ensure the safety of well control, and save the operation cost of emergency well control, wellhead repair and replacement and the like due to high pressure.
Description
Technical Field
The utility model relates to a self-injection machine pumping integrated well completion wellhead sealing device.
Background
Under the condition that the oil price is continuously operated at a low level, in order to achieve the purposes of reducing the cost and enhancing the efficiency, some oil and gas wells adopt self-injection machine pumping integrated wellheads, so that the later well repair and pumping operation of the self-injection well is reduced, and the construction cost is saved. However, a certain well control risk exists, the formation pressure coefficient is difficult to accurately predict due to the heterogeneity of a reservoir, the oil pressure can reach more than 10MPa in the initial stage of oil and gas well production, well head sealing completely depends on a polished rod blowout preventer and a sealer, and once the well head sealing fails, an oil well is in an uncontrolled state, and the safety risk is high. The current method is to connect an emergency open flow process for emergency open pressure relief, and if the oil pressure is too high, the emergency well control can only be realized, and the self-injection well head device is replaced.
Disclosure of Invention
The utility model aims to increase the self-blowing and pumping integrated well completion wellhead sealing device on the basis of not changing the current situation of a pumping wellhead, shield an original exposed polished rod and a polished rod sealer, and realize the purposes of ensuring reliable wellhead sealing and keeping rated working pressure of the device at 35MPa under the condition that a ram core of a sucker rod blowout preventer and the polished rod sealer fail.
The purpose of the utility model is realized in the following way: the utility model provides an integration well completion well head sealing device is taken out to self-blowing machine includes the sealed cowling, has connect the lubricator in the port internal rotation on the sealed cowling, has pegged graft in the lubricator, has pegged graft in the port under the stay tube has the supporting shoe, is provided with packing in the supporting shoe and presses the cap, and packing presses the cap to link to each other with the connection nipple joint that sets up in the port under the sealed cowling, and the connection nipple joint is fixed continuous with the sealed cowling inner wall.
The sealing cover comprises a cover body, an upper cavity and a lower cavity are arranged in the cover body, an upper port of the sealing cover is a top opening of the upper cavity, a lower port of the sealing cover is a bottom opening of the lower cavity, the inner diameter of the lower cavity is larger than that of the upper cavity, and a first clamping edge is formed at the junction of the upper cavity and the lower cavity.
The connecting nipple comprises a nipple body, an upper connector is arranged at the upper end of the nipple body, and a lower connector is arranged at the lower end of the nipple body; an internal thread is arranged in the opening of the upper connector, an external thread matched with the external thread is arranged on the outer wall of the lower part of the packing pressing cap, and the lower part of the packing pressing cap is screwed in the opening of the upper connector; an external thread is arranged on the outer wall of the upper connector, an internal thread matched with the external thread is arranged in the upper cavity of the sealing cover, and the upper connector is connected with the upper cavity of the sealing cover.
An internal thread is arranged in the lower connector, a sealing rubber cylinder is arranged, and a pressing ring is covered on the lower end surface of the sealing rubber cylinder; the lower connector is sleeved with a sealing ring, and a seal is formed between the lower connector and the inner wall of the lower cavity of the sealing cover.
The external diameter of the upper connector is smaller than that of the short section body, a second clamping edge is formed at the joint of the upper connector and the short section body, and the second clamping edge is in propping contact with the first clamping edge.
The support tube is a cavity tube with two open ends, a support block is connected in the lower port of the support tube, and a core supplementing is connected in the upper port.
The center of the supporting block is provided with a through hole, the upper part of the supporting block stretches into the lower port of the supporting pipe to be connected with the supporting pipe, the lower part of the supporting block is provided with a socket, and the upper part of the packing pressing cap is inserted into the socket.
The lubricator is a cavity tube with two open ends, the lower end of the lubricator is screwed with the upper cavity of the sealing cover, and the upper end of the lubricator is screwed with the plug.
Holes are formed in the sealing cover and the plugs, and pressure gauges or pressure relief cock are arranged in the holes.
Due to the fact that the technical scheme is implemented, the lubricator is internally sealed, so that a sealing space is formed above the sucker rod blowout preventer, the sealing space is used as a second sealing device for sealing wellhead pressure, and well control safety is guaranteed. The device can improve the bearing capacity and reliability of the mechanical pumping wellhead, ensure the safety of well control, and save the operation cost of emergency well control, wellhead repair and replacement and the like due to high pressure.
Drawings
The technical scheme of the utility model is shown by the following figures and examples:
FIG. 1 is a schematic diagram of a self-injection pump integrated well completion wellhead sealing device;
FIG. 2 is a schematic diagram of the junction of the nipple and the seal housing.
Legend: 1. the sealing device comprises a compression ring, 2, a sealing rubber cylinder, 3, a sealing ring, 4, a connecting nipple, 4-1, a nipple body, 4-2, an upper connector, 5, a packing pressing cap, 6, two-flap supporting blocks, 7, a sealing cover, 7-1, a cover body, 7-2, a first clamping edge, 8, a blowout preventer, 9, a supporting tube, 10, a core supplementing, 11 and a plug.
Detailed Description
The present utility model is not limited by the following examples, and specific embodiments can be determined according to the technical scheme and practical situations of the present utility model.
In the present utility model, for convenience of description, the description of the relative positional relationship of each component is described according to the layout manner of fig. 1 of the specification, for example: the positional relationship of up, down, left, right, etc. is determined in accordance with the layout direction of fig. 1 of the specification.
The utility model is illustrated in the following examples in connection with the accompanying drawings: examples: as shown in fig. 1, the self-injection machine-pumping integrated well completion wellhead sealing device comprises a sealing cover 7, a lubricator 8 is connected in an upper port of the sealing cover 7 in an internal rotation mode, a supporting pipe 9 is connected in the lubricator 8 in an inserted mode, a supporting block 6 is connected in a lower port of the supporting pipe 9 in an inserted mode, a packing pressing cap 5 is arranged in the supporting block 6, the packing pressing cap 5 is connected with a connecting nipple 4 arranged in a lower port of the sealing cover 7, and the connecting nipple 4 is fixedly connected with the inner wall of the sealing cover 7.
Further, the sealing cover 7 includes a cover body 7-1, an upper cavity and a lower cavity are separated in the cover body 7-1, an upper port of the sealing cover 7 is a top opening of the upper cavity, a lower port of the sealing cover 7 is a bottom opening of the lower cavity, an inner diameter of the lower cavity is larger than an inner diameter of the upper cavity, and a first clamping edge 7-2 is formed at a junction of the upper cavity and the lower cavity.
Further, the connecting nipple 4 comprises a nipple body 4-1, an upper connector 4-2 is arranged at the upper end of the nipple body 4-1, and a lower connector is arranged at the lower end of the nipple body; the outer diameter of the upper connector 4-2 is smaller than that of the nipple body 4-1, a second clamping edge is formed at the joint of the upper connector 4-2 and the nipple body 4-1 and is in contact with the first clamping edge 7-2, so that the limit of the length of the connecting nipple 4 entering the sealing cover 7 is formed.
Further, an internal thread is arranged in the opening of the upper connector 4-2, an external thread matched with the external thread is arranged on the outer wall of the lower part of the packing pressing cap 5, and the lower part of the packing pressing cap 5 is screwed in the opening of the upper connector 4-2.
Further, an external thread is arranged on the outer wall of the upper connector 4-2, an internal thread matched with the external thread is arranged in the upper cavity of the sealing cover 7, and the upper connector 4-2 is connected with the upper cavity of the sealing cover 7.
Further, an internal thread is arranged in the lower connector, a sealing rubber cylinder 2 is arranged, and a pressing ring 1 is covered on the lower end face of the sealing rubber cylinder 2. The lower connector is externally sleeved with a sealing ring 3, and a seal is formed between the lower connector and the inner wall of the lower cavity of the sealing cover 7.
The supporting tube 9 is a cavity tube with two open ends, the lower port of the supporting tube 9 is connected with the supporting block 6, and the upper port is connected with the core supplementing 10.
Further, a through hole is formed in the center of the supporting block 6, the upper portion of the supporting block 6 stretches into the lower port of the supporting tube 9 to be connected with the supporting tube 9, a socket is formed in the lower portion of the supporting block, and the upper portion of the packing pressing cap 5 is inserted into the socket.
The lubricator 8 is a cavity pipe with two open ends, the lower end is screwed with the upper cavity of the sealing cover 7, and the upper end is screwed with the plug 11.
Holes with the buckling rate of 1/2' NPT are designed on the sealing cover 7 and the plug 11, and a pressure gauge and a pressure relief cock can be installed so as to observe the pressure change condition in the lubricator 8, and the holes can also be used for pressure relief during disassembly and modification, thereby ensuring the operation safety.
The supporting blocks 6 and the compensating cores 10 are two-petal type, and the supporting blocks 6 and the compensating cores 10 are matched to position the supporting tube 9 so as to prevent the supporting tube 9 from shaking left and right.
After the wellhead is installed, a gland and a pressing cap on the upper part of the sucker rod blowout preventer are detached, the sucker rod exposed out of the sucker rod blowout preventer is connected with the sucker rod blowout preventer through a connecting nipple 4 and stretches into a supporting tube 9, double sealing is formed at the connecting nipple 4 through internal threads and a sealing rubber cylinder 2 at the joint of the sucker rod blowout preventer, the sealing ring 3 seals between the connecting nipple 4 and a sealing cover 7, so that the lubricator 8 is internally sealed, a sealing space is formed above the sucker rod blowout preventer, and the sealing space is used as a second sealing device for sealing wellhead pressure, thereby ensuring well control safety. If the oil gas well loses self-injection capacity and needs pumping, the sealing cover 7, the lubricator 8 and the supporting tube 9 are removed, the exposed sucker rod is directly connected with pumping equipment, and pumping production is carried out.
The foregoing description is provided for clarity of illustration only and is not intended to limit the embodiments of the present application. Obvious changes and modifications which are extended by the technical proposal of the application are still within the protection scope of the application.
Claims (9)
1. A self-blowing machine is taken out integration well completion well head sealing device which characterized in that: the sealing device comprises a sealing cover, a lubricator is connected in an upper port of the sealing cover in an internal rotation mode, a supporting pipe is connected in the lubricator in an inserting mode, a supporting block is connected in a lower port of the supporting pipe in an inserting mode, a packing pressing cap is arranged in the supporting block, the packing pressing cap is connected with a connecting nipple arranged in the lower port of the sealing cover, and the connecting nipple is fixedly connected with the inner wall of the sealing cover.
2. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as claimed in claim 1 wherein: the sealing cover comprises a cover body, an upper cavity and a lower cavity are arranged in the cover body, an upper port of the sealing cover is a top opening of the upper cavity, a lower port of the sealing cover is a bottom opening of the lower cavity, the inner diameter of the lower cavity is larger than that of the upper cavity, and a first clamping edge is formed at the junction of the upper cavity and the lower cavity.
3. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as claimed in claim 2 wherein: the connecting nipple comprises a nipple body, an upper connector is arranged at the upper end of the nipple body, and a lower connector is arranged at the lower end of the nipple body; an internal thread is arranged in the opening of the upper connector, an external thread matched with the external thread is arranged on the outer wall of the lower part of the packing pressing cap, and the lower part of the packing pressing cap is screwed in the opening of the upper connector; an external thread is arranged on the outer wall of the upper connector, an internal thread matched with the external thread is arranged in the upper cavity of the sealing cover, and the upper connector is connected with the upper cavity of the sealing cover.
4. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as claimed in claim 3 wherein: an internal thread is arranged in the lower connector, a sealing rubber cylinder is arranged, and a pressing ring is covered on the lower end surface of the sealing rubber cylinder; the lower connector is sleeved with a sealing ring, and a seal is formed between the lower connector and the inner wall of the lower cavity of the sealing cover.
5. A self-blowing pump integrated completion wellhead sealing device as claimed in claim 3 or 4 wherein: the external diameter of the upper connector is smaller than that of the short section body, a second clamping edge is formed at the joint of the upper connector and the short section body, and the second clamping edge is in propping contact with the first clamping edge.
6. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as claimed in claim 3 wherein: the support tube is a cavity tube with two open ends, a support block is connected in the lower port of the support tube, and a core supplementing is connected in the upper port.
7. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as recited in claim 6 wherein: the center of the supporting block is provided with a through hole, the upper part of the supporting block stretches into the lower port of the supporting pipe to be connected with the supporting pipe, the lower part of the supporting block is provided with a socket, and the upper part of the packing pressing cap is inserted into the socket.
8. A self-blowing and pumping integrated completion wellhead sealing device as claimed in claim 1 or 2 or 3 or 4 or 6 or 7 wherein: the lubricator is a cavity tube with two open ends, the lower end of the lubricator is screwed with the upper cavity of the sealing cover, and the upper end of the lubricator is screwed with the plug.
9. A self-blowing and mechanically-pumping integrated completion wellhead sealing device as claimed in claim 8 wherein: holes are formed in the sealing cover and the plugs, and pressure gauges or pressure relief cock are arranged in the holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321085367.9U CN220365550U (en) | 2023-05-08 | 2023-05-08 | Self-blowing machine pumping integrated well completion wellhead sealing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321085367.9U CN220365550U (en) | 2023-05-08 | 2023-05-08 | Self-blowing machine pumping integrated well completion wellhead sealing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220365550U true CN220365550U (en) | 2024-01-19 |
Family
ID=89520473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321085367.9U Active CN220365550U (en) | 2023-05-08 | 2023-05-08 | Self-blowing machine pumping integrated well completion wellhead sealing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220365550U (en) |
-
2023
- 2023-05-08 CN CN202321085367.9U patent/CN220365550U/en active Active
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