CN201016288Y - Well mouth hydraulic self-sealing equipment - Google Patents
Well mouth hydraulic self-sealing equipment Download PDFInfo
- Publication number
- CN201016288Y CN201016288Y CNU2006200313806U CN200620031380U CN201016288Y CN 201016288 Y CN201016288 Y CN 201016288Y CN U2006200313806 U CNU2006200313806 U CN U2006200313806U CN 200620031380 U CN200620031380 U CN 200620031380U CN 201016288 Y CN201016288 Y CN 201016288Y
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- piston
- oil
- auxiliary follow
- cylinder jacket
- 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.)
- Expired - Fee Related
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- 239000003292 glue Substances 0.000 claims description 16
- 239000003921 oil Substances 0.000 description 22
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a hydraulic self-sealing device for wellhead. The utility model comprises a pressure bearing plate, an oil cylinder jacket, an upper piston follower, a lower piston follower, a rubber core, a locking pressure plate, a locking screw, a reset spring and a joint flange. The pressure bearing plate is pi-shaped. The oil cylinder jacket is a reversed pi-shaped and is connected to the joint flange to form an assembly, an oil inlet and a drain valve are positioned on the oil cylinder jacket, and the oil cylinder jacket and the pressure bearing plate are connected by thread. The rubber core is a hollow I-shaped and is fixed between the upper and lower piston follower by the locking pressure plate with the locking screw, and the reset spring is positioned between the upper and lower piston follower. When force is exerted to the oil cylinder jacket of the utility model, the inner diameter of the rubber core can change according to the outer diameter of the oil pipe and the sucker rod going through the central hole of the rubber core, so that the dynamic sealing of the lower oil pipe and the sucker rod is achieved. When the well does not have the oil pipe or the sucker rod, exertion of appropriate pressure can achieve full sealing or blind sealing of the wellhead.
Description
Technical field: the utility model relates to a kind of well head hydraulic pressure self-sealing device, belongs to oil well repairing operation and removes blowout prevention of well head annular space or overflow mechanism technical field in oil pipe or the sucker rod process.
Background technology: oil well repairing operation removes in oil pipe or the sucker rod process, what blowout prevention of well head annular space or overflow mechanism were used partly seals blowout preventer and seals blowout preventer entirely, structurally be respectively two single discs and single disc, type of drive is manually, can only realize static sealing to removing oil pipe, can not realize that promptly oil pipe removes the dynamic seal (packing) in the process, can not be used for the sealing of lower sucker rod, range of application is little, and poor sealing performance pollutes the oil well surrounding enviroment.
Summary of the invention: the purpose of this utility model is little in order to overcome blowout preventer range of application of the prior art, the defective of poor sealing performance, design a kind of dynamic seal (packing) that can realize removing well head in oil pipe or the sucker rod process, the well head hydraulic pressure self-sealing device of control blowout or overflow.
The utility model is made up of bearing disc, oil cylinder cover, last auxiliary follow up piston, following auxiliary follow up piston, glue core, locking pressure plate, lock-screw, back-moving spring, adpting flange, bearing disc is " П " font, the oil cylinder cover is for falling " П " font, the oil cylinder cover is designed to one with adpting flange, have oil-in and exhaust-valve on it, oil cylinder cover and bearing disc are by screwed connection; The glue core is hollow " worker " font, the glue core is fixed between auxiliary follow up piston and the following auxiliary follow up piston by locking pressure plate with lock-screw, between last auxiliary follow up piston and following auxiliary follow up piston back-moving spring is installed; Be respectively equipped with the connecting thread hole on bearing disc and the adpting flange, can be connected with wellhead flange or other well control device.
The invention effect: when injection pressure in oil cylinder cover of the present utility model, glue in-core footpath can be realized removing the dynamic seal (packing) of oil pipe or sucker rod with changing by the oil pipe of its hollow hole or the external diameter of sucker rod; When in the well when no oil pipe or sucker rod, inject suitable pressure, can realize hermetically sealed or blind sealing to well head, annular pressure is high more, and glue core seal degree is good more.
Description of drawings: Fig. 1 is the utility model structural representation.
The specific embodiment: the utility model is made up of bearing disc 1, oil cylinder cover 5, last auxiliary follow up piston 3, following auxiliary follow up piston 4, glue core 8, locking pressure plate 6, lock-screw 9, back-moving spring 7, adpting flange 2, bearing disc 1 is " П " font, oil cylinder cover 5 is for falling " П " font, oil cylinder cover 5 is designed to one with adpting flange 2, have oil-in 10 and exhaust-valve 11 on it, oil cylinder cover 5 and bearing disc 1 are by screwed connection; Glue core 8 is hollow " worker " font, glue core 8 is fixed between auxiliary follow up piston 3 and the following auxiliary follow up piston 4 by locking pressure plate 6 with lock-screw 9, at last auxiliary follow up piston 3 and 4 of following auxiliary follow up pistons back-moving spring 7 is installed; Be respectively equipped with connecting thread hole 12 and 13 on bearing disc 1 and the adpting flange 2, can be connected with wellhead flange or other well control device.
By oil-in 10 on the oil cylinder cover 1 to oil cylinder cover 1, go up auxiliary follow up piston 3, hydraulic oil injects in the annular sealed chamber that constitutes of auxiliary follow up piston 4, glue core 8 down, air in it discharges by outlet valve 11, when pressure raises, will force auxiliary follow up piston 3 and following auxiliary follow up piston 4 to produce moves axially, glue core 8 internal diameter directions produce radial contraction and encase oil pipe or sucker rod, reach the purpose of sealing annular space, pack tightly the size that degree or seal degree depend on injection pressure; When injection pressure was suitable, glue core 8 internal diameters can change by the external diameter of oil pipe in it or sucker rod; When in the well when no oil pipe or sucker rod, inject certain pressure, glue core 8 internal diameters may contract to zero, and well head is realized hermetically sealed or blind sealing, in case fall into junk or stop overflow; When injection pressure reduced or discharge, last auxiliary follow up piston 3, following auxiliary follow up piston 4 and glue core 8 returned to the home position state under the effect of back-moving spring 7.
Claims (1)
1. well head hydraulic pressure self-sealing device, form by bearing disc (1), oil cylinder cover (5), last auxiliary follow up piston (3), following auxiliary follow up piston (4), glue core (8), locking pressure plate (6), lock-screw (9), back-moving spring (7), adpting flange (2), it is characterized in that bearing disc (1) is " ∏ " font, oil cylinder cover (5) is for falling " ∏ " font, oil cylinder cover (5) is designed to one with adpting flange (2), have oil-in (10) and exhaust-valve (11) on it, oil cylinder cover (5) and bearing disc (1) are by screwed connection; Glue core (8) is hollow " worker " font, glue core (8) is fixed between auxiliary follow up piston (3) and the following auxiliary follow up piston (4) by locking pressure plate (6) with lock-screw (9), between last auxiliary follow up piston (3) and following auxiliary follow up piston (4), back-moving spring (7) is installed; Be respectively equipped with connecting thread hole (12) and (13) on bearing disc (1) and the adpting flange (2), can be connected with wellhead flange or other well control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200313806U CN201016288Y (en) | 2006-03-23 | 2006-03-23 | Well mouth hydraulic self-sealing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200313806U CN201016288Y (en) | 2006-03-23 | 2006-03-23 | Well mouth hydraulic self-sealing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201016288Y true CN201016288Y (en) | 2008-02-06 |
Family
ID=39056772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200313806U Expired - Fee Related CN201016288Y (en) | 2006-03-23 | 2006-03-23 | Well mouth hydraulic self-sealing equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201016288Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330543A (en) * | 2011-05-20 | 2012-01-25 | 中国石油化工股份有限公司 | Sucker rod ring seal movable sealer |
| CN103032043A (en) * | 2012-11-22 | 2013-04-10 | 中国水电顾问集团中南勘测设计研究院 | Special hydraulic orifice sealer by orifice sealed grouting method |
| CN107083936A (en) * | 2017-04-25 | 2017-08-22 | 中煤科工集团重庆研究院有限公司 | Automatic reset hole packer |
| CN115306342A (en) * | 2022-10-11 | 2022-11-08 | 克拉玛依红山油田有限责任公司 | Glue injection guiding sealing blowout preventer |
-
2006
- 2006-03-23 CN CNU2006200313806U patent/CN201016288Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330543A (en) * | 2011-05-20 | 2012-01-25 | 中国石油化工股份有限公司 | Sucker rod ring seal movable sealer |
| CN103032043A (en) * | 2012-11-22 | 2013-04-10 | 中国水电顾问集团中南勘测设计研究院 | Special hydraulic orifice sealer by orifice sealed grouting method |
| CN107083936A (en) * | 2017-04-25 | 2017-08-22 | 中煤科工集团重庆研究院有限公司 | Automatic reset hole packer |
| CN115306342A (en) * | 2022-10-11 | 2022-11-08 | 克拉玛依红山油田有限责任公司 | Glue injection guiding sealing blowout preventer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZIGONG CHUANSHI DRILLING TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: ZHONG ZHONGLIANG Effective date: 20100621 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 457532 WELL TESTING CENTER, OIL EXTRACTION INSTITUTE, NO.109, ZHONGYUAN ROAD UYANG CITY, HENAN PROVINCE TO: 643000 NO.129, GROUP 1, TIANYUAN VILLAGE, XINMIN TOWN, DAAN DISTRICT, ZIGONG CITY, SICHUAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100621 Address after: Xinmin Town Daan District of Tianyuan city of Zigong province Sichuan 643000 village 1 Group No. 129 Patentee after: Zigong Chuanshi Drilling Technology Co.,Ltd. Address before: 457532 well testing center, Zhongyuan Oil Road, No. 109 Zhongyuan Road, Henan, Puyang Patentee before: Zhong Zhongliang |
|
| DD01 | Delivery of document by public notice |
Addressee: Zigong Chuanshi Drilling Technology Co.,Ltd. Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080206 Termination date: 20140323 |