CN111852376A - Well head and sealing protection device - Google Patents
Well head and sealing protection device Download PDFInfo
- Publication number
- CN111852376A CN111852376A CN202010701082.8A CN202010701082A CN111852376A CN 111852376 A CN111852376 A CN 111852376A CN 202010701082 A CN202010701082 A CN 202010701082A CN 111852376 A CN111852376 A CN 111852376A
- Authority
- CN
- China
- Prior art keywords
- sealing
- main body
- protection main
- wellhead
- side wall
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/068—Well heads; Setting-up thereof having provision for introducing objects or fluids into, or removing objects from, wells
Abstract
The invention provides a wellhead and seal protection device, and relates to the field of oil extraction devices. This well head and sealed protection device, including oil recovery well head, sealed protection main part and sucker rod, sealed protection main part is located oil recovery well head directly over, the fixed first flange that is provided with in top of oil recovery well head, the fixed second flange that is provided with of lower extreme of sealed protection main part, the fixed third flange that is provided with in top of sealed protection main part, through many first connecting bolt fixed connection between first flange and the second flange, be provided with the connecting piece directly over of sealed protection main part. The invention provides a well mouth and seal protection device, which is provided with two closed seals, so that the condition of well mouth leakage can be ensured, meanwhile, the rod body of a sucker rod can be limited and fixed, and the sucker rod can not shake during working.
Description
Technical Field
The invention relates to the technical field of oil extraction devices, in particular to a wellhead and seal protection device.
Background
At present, most oil fields in China enter a mechanical oil production period, main equipment used in mechanical oil production is rod pumping equipment, and according to statistics of relevant data, a rod pumping well accounts for more than 90% of the total number of mechanical oil production wells.
And more than 98% of wellhead sealing devices in the rod-type pumping wells adopt conventional polish rod sealing devices. Because structural defect, conventional polished rod sealing device exposes many defects in field application, and the failure rate of sealing washer is higher, leads to the device sealing performance relatively poor, and current well head sealing device can't carry out spacing fixed to the sucker rod moreover, and the sucker rod shakes easily at the during operation, makes fluid leak.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a wellhead and seal protection device, and solves the problems that the existing sealing device is poor in sealing performance, a sucker rod is easy to shake during working, and oil is leaked.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a well head and sealed protection device, includes oil recovery well head, sealed protection main part and sucker rod, sealed protection main part is located oil recovery well head's positive upper end, the fixed first flange that is provided with in top of oil recovery well head, the fixed second flange that is provided with of lower extreme of sealed protection main part, the fixed third flange that is provided with in top of sealed protection main part, through many first connecting bolt fixed connection between first flange and the second flange, be provided with the connecting piece positive upper end of sealed protection main part, be provided with sealed the pad between sealed protection main part and the connecting piece, through many second connecting bolt fixed connection between third flange and connecting piece, the sealed pad, oil recovery well head leans on the fixed stop device that is provided with between the upper end inner wall, the lower extreme of sucker rod passes connecting piece, sealing member in proper order, The sealing gasket, the sealing protection main body and the limiting device are communicated to the inner end of the oil extraction wellhead, the outer side walls of the middle end of the sealing protection main body are fixedly connected with an external block, the inner end of the external addition block is provided with a chute which passes through the side wall of the sealing protection main body near the inner end, sealing plates are fixedly arranged on the front inner side wall and the rear inner side wall of the sealing protection main body and the two additional blocks which are positioned on the same plane, the inner ends of the two chutes are respectively provided with a clamping sliding plate, the side wall of the chute close to the outer end is fixedly embedded with a thread sleeve, the outer end of the thread bushing penetrates through the external block to be communicated with the outer end, the inner end of the thread bushing is connected with a screw rod in a threaded manner, an adjusting hand wheel is fixedly arranged at the outer end of the screw rod, a connecting plate is rotatably arranged at the inner end of the screw rod, and a side wall of the connecting plate, which is far away from the screw rod, is fixedly connected with a compression spring, and the other end of the compression spring is fixedly connected to the side wall of the clamping sliding plate, which is close to the outer end.
Preferably, sealed the pad is made by wear-resisting ageing resistance rubber materials, sealed lower extreme that fills up is located sealed protection main part inner, and sealed outer wall and the laminating of sealed protection main part inner wall of filling up, sealed inner wall and the laminating of sucker rod of filling up.
Preferably, the limiting device comprises a limiting ring and four connecting rods, the inner ends of the four connecting rods are fixedly connected to the outer wall of the limiting ring, and the outer ends of the four connecting rods are fixedly connected to the inner wall of the oil production wellhead.
Preferably, the two sealing plates have the same specification and are both arranged in an arc plate shape, and the two sealing plates are symmetrical based on the central axis of the sealing protection main body.
Preferably, the front side wall and the rear side wall of the clamping sliding plate are respectively attached to the inner side walls of the two sealing plates.
Preferably, the shape of the side wall of the clamping sliding plate close to the sucker rod is matched with the shape of the outer wall of the sucker rod.
Preferably, the two additional blocks and the sealing protection body are integrally cast.
The working principle is as follows: when the device is used, the device is sequentially installed, the sucker rod is inserted into the oil well after the installation is finished, and then the two adjusting hand wheels are rotated. Adjusting hand wheel rotates and drives the screw rod and rotates, the screw rod moves to the inner end of the sealed protection main body along the thread bush when rotating, the screw rod moves and drives the compression spring to move to the inner side, the compression spring moves inwards and drives the clamping slide plate to move to the inner side until two clamping slide plates clamp the sucker rod, the adjusting hand wheel rotates a circle again to ensure that the compression spring is in a compression state at the moment, the sealing gasket at the moment, a limiting device, the clamping slide plate fixes the rod body of the sucker rod, the shaking condition of the sucker rod during working is ensured, meanwhile, the two clamping slide plates form one closed seal with the two sealing plates when clamping the sucker rod, the sealing gasket liquid forms one seal, and the whole device can be ensured to have good sealing.
(III) advantageous effects
The invention provides a wellhead and seal protection device. The method has the following beneficial effects:
compared with the prior art, the inner ends of the wellhead and the sealing protection device are provided with two closed seals, so that the condition of wellhead leakage can be avoided, and meanwhile, the device can limit and fix the rod body of the sucker rod, so that the sucker rod can not shake during working, and oil can not leak.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic cross-sectional view of an additional block structure according to the present invention;
fig. 4 is a schematic structural view of the limiting device of the present invention.
Wherein, 1, an oil extraction wellhead; 2. a seal protection body; 3. a first connecting flange; 4. a second connecting flange; 5. a first connecting bolt; 6. a third connecting flange; 7. a gasket; 8. a connecting member; 9. a second connecting bolt; 10. a sucker rod; 11. a limiting device; 12. adding a block; 13. a chute; 14. clamping the sliding plate; 15. a threaded sleeve; 16. a screw; 17. adjusting a hand wheel; 18. a compression spring; 19. a connecting plate; 20. a limiting ring; 21. a connecting rod; 22. and (7) sealing the plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
as shown in fig. 1-4, an embodiment of the present invention provides a wellhead and seal protection device, including an oil production wellhead 1, a seal protection body 2 and a sucker rod 10, wherein the seal protection body 2 is located at the upper end of the oil production wellhead 1, a first connecting flange 3 is fixedly disposed at the top end of the oil production wellhead 1, a second connecting flange 4 is fixedly disposed at the lower end of the seal protection body 2, a third connecting flange 6 is fixedly disposed at the top end of the seal protection body 2, the first connecting flange 3 and the second connecting flange 4 are fixedly connected by a plurality of first connecting bolts 5, a connecting member 8 is disposed at the upper end of the seal protection body 2, the connecting member 8 is composed of a sleeve and two flanges fixedly connected to the upper and lower ends of the sleeve, and is used for connecting other wellhead devices at the upper end of the device, a sealing pad 7 is disposed between the seal protection body 2 and the connecting, the third connecting flange 6 is fixedly connected with the connecting piece 8 and the sealing gasket 7 through a plurality of second connecting bolts 9, a limiting device 11 is fixedly arranged between the inner walls of the upper ends of the oil extraction well mouths 1, the limiting device 11 simply limits the rod bodies of the oil extraction rods 10 to ensure that the oil extraction rods do not shake too greatly, the lower ends of the oil extraction rods 10 sequentially penetrate through the connecting piece 8, the sealing gasket 7, the sealing protection main body 2 and the limiting device 11 to the inner ends of the oil extraction well mouths 1, outer adding blocks 12 are fixedly connected to the outer side walls of the middle ends of the sealing protection main body 2, sliding grooves 13 are formed in the inner ends of the outer adding blocks 12, the inner ends of the sliding grooves 13 penetrate through the side walls of the sealing protection main body 2, sealing plates 22 are fixedly arranged on the front inner side walls and the rear inner side walls of the sealing protection main body 2 and the two outer adding blocks 12 on, the outer end of the threaded sleeve 15 penetrates through the outer block 12 to reach the outer end, the inner end of the threaded sleeve 15 is in threaded connection with a screw rod 16, an adjusting hand wheel 17 is fixedly arranged at the outer end of the screw rod 16, a connecting plate 19 is rotatably arranged at the inner end of the screw rod 16, a pressure spring 18 is fixedly connected to one side wall, far away from the screw rod 16, of the connecting plate 19, the other end of the pressure spring 18 is fixedly connected to the side wall, close to the outer end, of the clamping slide plate 14, and the two clamping slide plates 14 can be controlled to clamp.
The sealing gasket 7 is made of wear-resistant and anti-aging rubber materials, the lower end of the sealing gasket 7 is positioned at the inner end of the sealing protection main body 2, the outer wall of the sealing gasket 7 is attached to the inner wall of the sealing protection main body 2, the inner wall of the sealing gasket 7 is attached to the sucker rod 10, the design ensures that the sealing gasket 7 has good sealing performance, the limiting device 11 comprises a limiting ring 20 and four connecting rods 21, the inner ends of the four connecting rods 21 are fixedly connected to the outer wall of the limiting ring 20, the outer ends of the four connecting rods 21 are fixedly connected to the inner wall of the oil extraction well head 1, the two sealing plates 22 are identical in specification and are both arranged in an arc plate shape, the two sealing plates 22 are symmetrical based on the central shaft of the sealing protection main body 2, the front side wall and the rear side wall of the clamping sliding plate 14 are respectively attached to the inner side walls of the two sealing, ensures that the whole device has good stability and quality strength.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a well head and sealed protection device, includes oil recovery well head (1), sealed protection main part (2) and sucker rod (10), its characterized in that: the sealing protection main body (2) is positioned at the upper end of the oil extraction wellhead (1), a first connecting flange (3) is fixedly arranged at the top end of the oil extraction wellhead (1), a second connecting flange (4) is fixedly arranged at the lower end of the sealing protection main body (2), a third connecting flange (6) is fixedly arranged at the top end of the sealing protection main body (2), the first connecting flange (3) is fixedly connected with the second connecting flange (4) through a plurality of first connecting bolts (5), a connecting piece (8) is arranged at the upper end of the sealing protection main body (2), a sealing gasket (7) is arranged between the sealing protection main body (2) and the connecting piece (8), the third connecting flange (6) is fixedly connected with the connecting piece (8) and the sealing gasket (7) through a plurality of second connecting bolts (9), and a limiting device (11) is fixedly arranged between the inner walls of the upper end of the oil extraction wellhead (1), the lower end of the sucker rod (10) sequentially penetrates through a connecting piece (8), a sealing gasket (7), a sealing protection main body (2) and a limiting device (11) to be communicated with the inner end of an oil extraction well head (1), the sealing protection main body (2) is close to two outer side walls of the middle end and is fixedly connected with an additional block (12), the inner end of the additional block (12) is provided with a sliding groove (13), the sliding groove (13) is close to the inner end to penetrate through the side wall of the sealing protection main body (2), the sealing protection main body (2) and the two additional blocks (12) are positioned on the front inner side wall and the rear inner side wall of the same plane and are fixedly provided with sealing plates (22), the inner ends of the two sliding grooves (13) are respectively provided with a clamping sliding plate (14), the sliding groove (13) is fixedly embedded with a thread sleeve (15) on the side wall close to the outer end, the outer end of the thread, the outer end of the screw rod (16) is fixedly provided with an adjusting hand wheel (17), the inner end of the screw rod (16) is rotatably provided with a connecting plate (19), a side wall, far away from the screw rod (16), of the connecting plate (19) is fixedly connected with a compression spring (18), and the other end of the compression spring (18) is fixedly connected to the side wall, close to the outer end, of the clamping sliding plate (14).
2. A wellhead and seal protection device as claimed in claim 1, in which: the sealing gasket (7) is made of wear-resistant anti-aging rubber materials, the lower end of the sealing gasket (7) is located at the inner end of the sealing protection main body (2), the outer wall of the sealing gasket (7) is attached to the inner wall of the sealing protection main body (2), and the inner wall of the sealing gasket (7) is attached to the sucker rod (10).
3. A wellhead and seal protection device as claimed in claim 1, in which: stop device (11) include spacing ring (20) and four connecting rods (21), the inner fixed connection of four connecting rods (21) is on the outer wall of spacing ring (20), the outer end fixed connection of four connecting rods (21) is on the inner wall of oil recovery well head (1).
4. A wellhead and seal protection device as claimed in claim 1, in which: the two sealing plates (22) are identical in specification and are both arranged in an arc plate shape, and the two sealing plates (22) are symmetrical based on the central axis of the sealing protection main body (2).
5. A wellhead and seal protection device as claimed in claim 1, in which: the front side wall and the rear side wall of the clamping sliding plate (14) are respectively attached to the inner side walls of the two sealing plates (22).
6. A wellhead and seal protection device as claimed in claim 1, in which: the shape of the side wall of the clamping sliding plate (14) close to the sucker rod (10) is matched with the shape of the outer wall of the sucker rod (10).
7. A wellhead and seal protection device as claimed in claim 1, in which: the two additional blocks (12) and the sealing protection main body (2) are cast integrally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701082.8A CN111852376A (en) | 2020-07-20 | 2020-07-20 | Well head and sealing protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010701082.8A CN111852376A (en) | 2020-07-20 | 2020-07-20 | Well head and sealing protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852376A true CN111852376A (en) | 2020-10-30 |
Family
ID=73001121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010701082.8A Pending CN111852376A (en) | 2020-07-20 | 2020-07-20 | Well head and sealing protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852376A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482549A (en) * | 2021-08-18 | 2021-10-08 | 姜水 | Single-pipe wellhead flow device |
| CN115637946A (en) * | 2022-12-23 | 2023-01-24 | 大庆市华禹石油机械制造有限公司 | Petroleum wellhead sealing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357123Y (en) * | 1998-08-18 | 2000-01-05 | 曾维康 | Self-sealed blow-out preventing box |
| US20030127220A1 (en) * | 2002-01-04 | 2003-07-10 | Farquharson Keith D. | Wellhead stuffing box support assembly |
| CN2786273Y (en) * | 2005-02-04 | 2006-06-07 | 张军 | Bias-adjusting type polish rod sealing blowout preventer |
| CN203394374U (en) * | 2013-07-05 | 2014-01-15 | 中国石油天然气股份有限公司 | Polished-rod centralizing device |
| CN205858243U (en) * | 2016-06-06 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of packing box device |
| CN209163764U (en) * | 2018-09-21 | 2019-07-26 | 辽宁泰隆石油机械有限公司 | A kind of polish rod seal device being conveniently replaceable maintenance |
| CN111364935A (en) * | 2018-12-25 | 2020-07-03 | 中国石油天然气股份有限公司 | Oil pumping equipment and oil pumping rod group under-pressure operation method |
-
2020
- 2020-07-20 CN CN202010701082.8A patent/CN111852376A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2357123Y (en) * | 1998-08-18 | 2000-01-05 | 曾维康 | Self-sealed blow-out preventing box |
| US20030127220A1 (en) * | 2002-01-04 | 2003-07-10 | Farquharson Keith D. | Wellhead stuffing box support assembly |
| CN2786273Y (en) * | 2005-02-04 | 2006-06-07 | 张军 | Bias-adjusting type polish rod sealing blowout preventer |
| CN203394374U (en) * | 2013-07-05 | 2014-01-15 | 中国石油天然气股份有限公司 | Polished-rod centralizing device |
| CN205858243U (en) * | 2016-06-06 | 2017-01-04 | 中国石油天然气股份有限公司 | A kind of packing box device |
| CN209163764U (en) * | 2018-09-21 | 2019-07-26 | 辽宁泰隆石油机械有限公司 | A kind of polish rod seal device being conveniently replaceable maintenance |
| CN111364935A (en) * | 2018-12-25 | 2020-07-03 | 中国石油天然气股份有限公司 | Oil pumping equipment and oil pumping rod group under-pressure operation method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113482549A (en) * | 2021-08-18 | 2021-10-08 | 姜水 | Single-pipe wellhead flow device |
| CN115637946A (en) * | 2022-12-23 | 2023-01-24 | 大庆市华禹石油机械制造有限公司 | Petroleum wellhead sealing device |
| CN115637946B (en) * | 2022-12-23 | 2023-03-07 | 大庆市华禹石油机械制造有限公司 | Petroleum wellhead sealing device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
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| RJ01 | Rejection of invention patent application after publication |