CN214660047U - Static sealing device for polished rod of thermal production well - Google Patents
Static sealing device for polished rod of thermal production well Download PDFInfo
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- CN214660047U CN214660047U CN202121084255.2U CN202121084255U CN214660047U CN 214660047 U CN214660047 U CN 214660047U CN 202121084255 U CN202121084255 U CN 202121084255U CN 214660047 U CN214660047 U CN 214660047U
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- polished rod
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- sleeved
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Abstract
The utility model relates to a static sealing device for a polished rod of a thermal production well, which comprises an upper joint sleeved on the outer wall of the polished rod, wherein an upper righting ring sleeved on the outer wall of the polished rod is arranged on the inner wall of a top port of the upper joint, and an upper retaining ring clamped on the inner wall of the upper joint is arranged at the top of the upper righting ring; the outer wall of the bottom end head of the upper joint is sleeved with a lower joint, a piston is arranged in a cavity formed between the lower joint and the upper joint, a bottom port of the piston is sleeved on the outer wall of the polished rod, a high-temperature sealing ring sleeved on the outer wall of the polished rod is arranged on the inner wall of the lower joint below the bottom port of the piston, a lower centering ring sleeved on the outer wall of the polished rod is arranged on the inner wall of the lower joint below the high-temperature sealing ring, and lower retaining rings clamped on the inner wall of the lower joint are arranged at the bottoms of the lower centering ring and the lower centering ring. The utility model discloses a quiet sealing device of hot production well polished rod structural design is reasonable, has realized that the packing can be changed at any time under the high temperature area pressure condition, can guarantee the continuous steady production of oil well.
Description
Technical Field
The utility model relates to a quiet sealing device of hot production well polished rod.
Background
In recent years, with continuous development and expansion of thick oil blocks in oil fields in China, wells for thick oil steam flooding recovery and thick oil SAGD (steam assisted gravity drainage) recovery are increasing year by year. The SAGD production well has high well mouth temperature and high pressure, and the conventional thickened oil thermal recovery well packing box mainly has the following problems when being applied to SAGD: firstly, the service life of the packing is short; secondly, the packing is inconvenient to replace; and the well mouth is frequently punctured, hidden danger is brought to well control safety, and the requirement of environmental protection is not met. Therefore, an emergency cut-off device under a packing box suitable for an SAGD production mode needs to be developed, packing replacement under high temperature and pressure can be achieved after the packing fails, and a hot production well polished rod static sealing device is urgently needed to achieve high temperature and pressure packing replacement in the operation process.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a quiet sealing device of hot production well polished rod.
The utility model discloses a static sealing device for a polished rod of a thermal production well, which comprises an upper joint sleeved on the outer wall of the polished rod, wherein an upper righting ring sleeved on the outer wall of the polished rod is arranged on the inner wall of a top port of the upper joint, and an upper baffle ring clamped on the inner wall of the upper joint is arranged at the top of the upper righting ring; the outer wall of the bottom end head of the upper joint is sleeved with a lower joint, a pressurizing joint is arranged on the outer wall of the lower joint close to the top end, a piston is arranged in a cavity formed between the lower joint and the upper joint, first sealing rings are arranged on the inner wall of a piston top port and the outer wall of the piston top port, a bottom port of the piston is sleeved on the outer wall of the polished rod, a high-temperature sealing ring sleeved on the outer wall of the polished rod is arranged on the inner wall of the lower joint below the piston bottom port, a lower centering ring sleeved on the outer wall of the polished rod is arranged on the inner wall of the lower joint below the high-temperature sealing ring, and a lower retaining ring clamped on the inner wall of the lower joint is arranged at the bottom of the lower centering ring and the lower centering ring.
The utility model discloses a quiet sealing device of hot production well polished rod, it is sealed through the second sealing washer between the outer wall of top port inner wall of lower clutch and top connection.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a quiet sealing device of hot production well polished rod structural design is reasonable, adopts top connection and lower clutch that mutually support, sets up the piston in the cavity that forms between top connection and the lower clutch, realizes the pressurization to the piston through the pressurization joint, compresses the high temperature sealing washer through the hydraulic pressure mode, realizes the polished rod quiet seal, satisfies SAGD and changes the time needs of packing; the packing can be replaced at any time under the condition of high temperature and pressure, and the continuous and stable production of the oil well can be ensured.
Drawings
Fig. 1 is a schematic structural view of a polished rod static sealing device for a thermal production well according to an embodiment of the present invention.
In the figure:
1. a polish rod; 2. an upper joint; 3. an upper righting ring; 4. an upper baffle ring; 5. a lower joint; 6. a pressurized joint; 7. a piston; 8. a first seal ring; 9. a high-temperature sealing ring; 10. a lower righting ring; 11. a lower baffle ring; 12. and a second seal ring.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1, the static sealing device for the polish rod of the thermal production well comprises an upper joint 2 sleeved on the outer wall of the polish rod 1, wherein an upper righting ring 3 sleeved on the outer wall of the polish rod 1 is arranged on the inner wall of the top end opening of the upper joint 2, and an upper retaining ring 4 clamped on the inner wall of the upper joint 2 is arranged at the top of the upper righting ring 3; the outer wall of the bottom end of the upper joint 2 is sleeved with a lower joint 5, a pressurizing joint 6 is arranged on the outer wall of the lower joint 5 close to the top end, a piston 7 is arranged in a cavity formed between the lower joint 5 and the upper joint 2, first sealing rings 8 are arranged on the inner wall of a top port of the piston 7 and the outer wall of the top port of the piston 7, the bottom port of the piston 7 is sleeved on the outer wall of the polished rod 1, a high-temperature sealing ring 9 sleeved on the outer wall of the polished rod 1 is arranged on the inner wall of the lower joint 5 below the bottom port of the piston 7, a lower centering ring 10 sleeved on the outer wall of the polished rod 1 is arranged on the inner wall of the lower joint 5 below the high-temperature sealing ring 9, and a lower retaining ring 11 clamped on the inner wall of the lower joint 5 is arranged at the bottom of the lower centering ring 10.
The utility model discloses a quiet sealing device of hot production well polished rod, it is sealed through second sealing washer 12 between the outer wall of the inner wall of top port of lower clutch 5 and top connection 2.
The utility model discloses a quiet sealing device of hot production well polished rod when specifically using, install between wellhead and conventional hot production well packing box, right the ring down and right the ring main role on and right the polished rod and make it placed in the middle, prevent the eccentric wear. The piston is pressurized through the pressurizing joint, the power adopts a hydraulic mode, the piston compresses the high-temperature sealing ring, the static sealing of the polished rod is realized, and the time requirement of replacing the packing by the SAGD is met; the packing can be replaced at any time under the condition of high temperature and pressure, and the continuous and stable production of the oil well can be ensured. When the packing needs to be replaced, the portable manual hydraulic pump is connected through the pressurizing joint on the outer wall of the lower joint, the piston is pressurized, the piston in the lower joint moves downwards, the high-temperature sealing ring is compressed, and the sealing of the polish rod can be realized. And after the packing is replaced, the pressure is released, and the high-temperature sealing ring recovers the free state. The high-temperature sealing ring is in a loose free state in daily production, is not stressed and has long service life.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a quiet sealing device of hot production well polished rod, establishes top connection (2) on polished rod (1) outer wall including the cover, its characterized in that: an upper righting ring (3) sleeved on the outer wall of the polished rod (1) is arranged on the inner wall of the top end opening of the upper joint (2), and an upper retaining ring (4) clamped on the inner wall of the upper joint (2) is arranged at the top of the upper righting ring (3); the outer wall of the bottom end of the upper joint (2) is sleeved with a lower joint (5), a pressurizing joint (6) is arranged on the outer wall of the lower joint (5) close to the top end, a piston (7) is arranged in a cavity formed between the lower joint (5) and the upper joint (2), a first sealing ring (8) is arranged on the inner wall of a top port of the piston (7) and the outer wall of the top port of the piston (7), a bottom port of the piston (7) is sleeved on the outer wall of the polished rod (1), a high-temperature sealing ring (9) sleeved on the outer wall of the polished rod (1) is arranged on the inner wall of the lower joint (5) below the bottom port of the piston (7), a lower centering ring (10) sleeved on the outer wall of the polished rod (1) is arranged on the inner wall of the lower joint (5) below the high-temperature sealing ring (9), and a lower blocking ring (11) clamped on the inner wall of the lower joint (5) is arranged at the bottom of the lower centering ring (10).
2. The static sealing device for a polish rod of a thermal production well according to claim 1, wherein: and the inner wall of the top port of the lower joint (5) and the outer wall of the upper joint (2) are sealed through a second sealing ring (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084255.2U CN214660047U (en) | 2021-05-19 | 2021-05-19 | Static sealing device for polished rod of thermal production well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121084255.2U CN214660047U (en) | 2021-05-19 | 2021-05-19 | Static sealing device for polished rod of thermal production well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214660047U true CN214660047U (en) | 2021-11-09 |
Family
ID=78495248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121084255.2U Active CN214660047U (en) | 2021-05-19 | 2021-05-19 | Static sealing device for polished rod of thermal production well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214660047U (en) |
-
2021
- 2021-05-19 CN CN202121084255.2U patent/CN214660047U/en active Active
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