CN2668839Y - Oil-well repair-operation blowout preventor - Google Patents
Oil-well repair-operation blowout preventor Download PDFInfo
- Publication number
- CN2668839Y CN2668839Y CNU2004200300385U CN200420030038U CN2668839Y CN 2668839 Y CN2668839 Y CN 2668839Y CN U2004200300385 U CNU2004200300385 U CN U2004200300385U CN 200420030038 U CN200420030038 U CN 200420030038U CN 2668839 Y CN2668839 Y CN 2668839Y
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- CN
- China
- Prior art keywords
- housing
- screw
- bearing
- oil
- flashboard
- 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
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Abstract
The utility model relates to an oil-well repair-operation and underground working blowout preventer which is composed of a casing 11, a handle 1, a screw 2, a bearing 4, an end cover 5, a fastening screw nail 6, a screw nail 7, an elastic check ring 8, a bearing seat 9, a casing 11, a screw nut 12, the sealing pressed rings 14 and 17, a flashboard 16, the o-shaped sealing rings 3, 10, 13 and 15. The blowout preventer can be used to replace the wellhead blowout preventer which is used for the field at present and the large four-way. The oil-well repair-operation and underground working blowout preventer is easy to install and use. The oil-well repair-operation and underground working blowout preventer can effectively avoid the blowout accident without control. The oil-well repair-operation and underground working blowout preventer is in favor of environmental protection and safety production and is suitable to be popularized.
Description
Technical field:
The utility model relates to a kind of wellhead assembly that is used for oil field well workover, underground work process.
Background technology:
At present, the on-the-spot workover treatment wellhead blowout preventor that uses is divided into two kinds, and a kind of is full envelope single disc structure, and another kind is half full seal structure.Single disc seals blowout preventer entirely, just a simple slide valve structure; And half full envelope blowout preventer adopts centre valve and side extruding rubber sealing structure, for adapting to different calibers, needs to change the squeeze sealing member of both sides.Full envelope blowout preventer adopts two kinds of bolts to connect, and the part screw is a blind hole, and is not general with well head bolt commonly used, the on-the-spot difficulty of installing; What half full envelope blowout preventer adopted is blind hole bolt entirely, and the scene is installed more difficult.In addition, need for guaranteeing kill-job or pressure release, in playing the lower tubular column operation, big four must be installed in the preventer below, causes the operation well head to increase, and be unfavorable for rountrip, and operation field must have oil recovery big four and wellhead blowout preventer.For above-mentioned reasons, have, in rountrip, generally do not install, and result of use is bad, thereby makes the workover treatment process exist potential safety hazard though these two kinds of preventers are on-the-spot.
Summary of the invention:
The utility model purpose is to provide a kind of easy to install, workover rig service to oil well preventer that can effectively prevent from not have the control gas blowout accident.
The utility model is to realize like this.This kind wellhead blowout preventor is made up of blowout preventer main body, flashboard sealing, bearing seal and end cap seal four parts, wherein, the last lower flange of blowout preventer main body is provided with general bolt hole, and the middle part is provided with the flashboard hermetically-sealed construction, and the bottom is provided with the curve runner and sits the tubing hanger position.The flashboard hermetic unit comprises " O " shape sealing ring, seal joint and flashboard, takes inclined-plane crush seal and sealing ring dual structure, guarantees that high pressure sealing is safe and reliable.Bearing seal partly comprises " O " shape sealing ring, bearing and bearing cap, takes to compress seal form.End cap seal partly comprises end cap, screw, circlip, bearing support, " O " shape sealing ring, takes to compress sealing.Before the use, the side opening place with this preventer clamps one at intact " 250 " type gate earlier.Carry original well head during operation earlier off, put ring gasket then well, all open ram block, again this preventer is sitting on the casing flange,, guarantee that the sealing of steel ring position is reliable with 12 general well head bolton.Rise, down in the oil pipe process, when finding the blowout omen is arranged, rapidly blowout preventing tubing hung with tubing string in the well and be connected, then blowout preventing tubing is hung and be seated in the wellhead blowout preventor, lay down the lifting short circuit, close flashboard, can realize the generation of prevention gas blowout accident in the rountrip process.When seeing well, rest midway, pre-well blowout preventing operation is the same.During the empty well tube, close slide valve tight and get final product.When having pressure to need kill-job in the well, can on this preventer, wellhead flange be installed, on connect oil ninth of the ten Heavenly Stems, side opening gate place connects oil ninth of the ten Heavenly Stems, can realize positive and negative kill-job construction.When needing the open flow pressure release, sleeve gate connects the emptying blowdown line, can implement open flow pressure release operation by flashboard control.
The utility model can be used to replace on-the-spot at present wellhead blowout preventer and the big four that uses; adopt well head bolt commonly used to connect, easy to install, utilize it can prevent from not have the control gas blowout accident effectively; help environmental protection and safety in production, be suitable for and apply.
Description of drawings:
Accompanying drawing is the utility model structural representation.Fig. 2 is its vertical view.
The specific embodiment: enforcement of the present utility model is illustrated below in conjunction with accompanying drawing.
As shown in the figure, the utility model is made up of handle 1, leading screw 2, bearing 4, end cap 5, holding screw 6, screw 7, circlip 8, bearing support 9, housing 11, screw 12, seal joint 14,17, flashboard 16, " O " shape sealing ring 3,10,13,15, its structure assembled relation is as follows: be provided with flashboard 16 in housing 11 center lumen, its upper and lower is respectively equipped with seal joint 14,17, and " O " shape sealing ring 13,15 is housed on the pressure ring 14; Housing is provided with leading screw 2 in the 11 1 side chambeies, and its inboard is provided with the screw 12 that links to each other with flashboard 16, and outside external part is equipped with handle 1; Housing 11 1 sides are set with bearing support 9, and fix with housing 11 with 12 screws 7 that are uniformly distributed along the circumference and circlip 8, and bearing support 9 outsides are provided with bearing 4, and bearing 4 is outer to be set with end cap 5, is connected and fixed by 10 holding screws 6 between end cap 5 and the bearing 9.Wherein, housing 11 materials are ZG35, and its upper and lower flange is uniformly distributed with 12 bolts hole along the circumference, the middle part is provided with the flashboard hermetically-sealed construction, and the bottom is provided with the curve runner and sits the tubing hanger position, and whole height is 320mm, flange diameter 380mm, latus rectum 158mm, maximum length is 655mm.2 bearings 4 adopt single direction thrust ball bearing 8305.Holding screw 6 adopts M8 * 10 fluting awl-end screws.Screw 7 adopts M16 * 50 hexagon socket cap head screws." O " shape sealing ring 3,10,13,15 all adopts acrylonitrile-butadiene rubber to make.
Claims (2)
1, a kind of workover rig service to oil well preventer, by housing (11), handle (1), leading screw (2), bearing (4), end cap (5), holding screw (6), screw (7), circlip (8), bearing support (9), housing (11), screw (12), seal joint (14), (17), flashboard (16), " O " shape sealing ring (3), (10), (13), (15) form, it is characterized in that: be provided with flashboard (16) in housing (11) center lumen, on it, the below is respectively equipped with seal joint (14), (17), on the pressure ring (14) " O " shape sealing ring (13) is housed, (15); Housing is provided with leading screw (2) in (11) the one side chambeies, and its inboard is provided with the screw (12) that links to each other with flashboard (16), and outside external part is equipped with handle (1); Housing (11) one sides are set with bearing support (9), and fix with 12 screws (7) that are uniformly distributed along the circumference and circlip (8) and housing (11), bearing support (9) outside is provided with bearing (4), bearing (4) is outer to be set with end cap (5), is connected and fixed by 10 holding screws (6) between end cap (5) and the bearing (9).
2, workover rig service to oil well preventer according to claim 1 is characterized in that: the upper and lower flange of housing (11) is uniformly distributed with 12 bolts hole along the circumference, and the middle part is provided with the flashboard hermetically-sealed construction, and the bottom is provided with the curve runner and sits the tubing hanger position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200300385U CN2668839Y (en) | 2004-01-05 | 2004-01-05 | Oil-well repair-operation blowout preventor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2004200300385U CN2668839Y (en) | 2004-01-05 | 2004-01-05 | Oil-well repair-operation blowout preventor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2668839Y true CN2668839Y (en) | 2005-01-05 |
Family
ID=34441582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2004200300385U Expired - Fee Related CN2668839Y (en) | 2004-01-05 | 2004-01-05 | Oil-well repair-operation blowout preventor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2668839Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547764A (en) * | 2011-06-14 | 2014-01-29 | 现代重工业株式会社 | Drilling system having slot for underwater storage of BOP assembly |
| CN106703736A (en) * | 2017-03-20 | 2017-05-24 | 大庆东达节能技术开发服务有限公司 | Anti-theft and pressure maintaining well sealing device for oil field |
| CN114592819A (en) * | 2022-04-01 | 2022-06-07 | 大庆丹诺石油科技开发有限公司 | Multi-stage sealing device for polymer composite particles at wellhead of oil pumping unit |
-
2004
- 2004-01-05 CN CNU2004200300385U patent/CN2668839Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547764A (en) * | 2011-06-14 | 2014-01-29 | 现代重工业株式会社 | Drilling system having slot for underwater storage of BOP assembly |
| CN103547764B (en) * | 2011-06-14 | 2015-07-22 | 现代重工业株式会社 | Drilling system having slot for underwater storage of BOP assembly |
| CN106703736A (en) * | 2017-03-20 | 2017-05-24 | 大庆东达节能技术开发服务有限公司 | Anti-theft and pressure maintaining well sealing device for oil field |
| CN114592819A (en) * | 2022-04-01 | 2022-06-07 | 大庆丹诺石油科技开发有限公司 | Multi-stage sealing device for polymer composite particles at wellhead of oil pumping unit |
| CN114592819B (en) * | 2022-04-01 | 2022-07-22 | 大庆丹诺石油科技开发有限公司 | Oil pumping machine well head high molecular composite particle multistage sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |