CN204663452U - Totally-enclosed blowout preventer borehole apparatus - Google Patents
Totally-enclosed blowout preventer borehole apparatus Download PDFInfo
- Publication number
- CN204663452U CN204663452U CN201520285483.4U CN201520285483U CN204663452U CN 204663452 U CN204663452 U CN 204663452U CN 201520285483 U CN201520285483 U CN 201520285483U CN 204663452 U CN204663452 U CN 204663452U
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- CN
- China
- Prior art keywords
- blowout
- totally
- blowout preventer
- borehole apparatus
- pressure cap
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- 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.)
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Abstract
The utility model belongs to the blowout preventer borehole apparatus that oil field uses when workover operation construction, in particular to the totally-enclosed blowout preventer borehole apparatus of one, this totally-enclosed blowout preventer borehole apparatus, by blowout-proof pressure cap, relief port, hinge jaw, seal, retaining mechanism, abnormity flange composition, its special character is: the side of blowout-proof pressure cap is welded with pressure relief opening and retaining mechanism, abnormity flange upper end is welded with seal, blowout-proof pressure cap is connected by hinge jaw with special-shaped flange, the beneficial effects of the utility model are: structure is simple, volume is little, easy to operate, the work requirements of closing well rapidly in 15 seconds can be met, bearing pressure: >=50MPa, closed oil casing annular space and pipe elevator can be realized.
Description
Technical field
The utility model belongs to the blowout preventer borehole apparatus that oil field uses when workover operation construction, particularly the totally-enclosed blowout preventer borehole apparatus of one.
Background technology
Oil pumper sucker rod pumping is field use artificial lift oil production method the most widely, present stage, due to the impact by injection water or gas injection, strata pressure is abnormal, when workover treatment, often there is the hidden danger that blowout occurs, at present, the wellhead blowout preventer of oil field in workover operation construction has semiclosed blowout preventer borehole apparatus, totally-enclosed blowout preventer borehole apparatus, but there are some problems, semiclosed blowout preventer borehole apparatus: rising in lower tubular column process once there is blowout, can only closed casing annular space, operating personnel are while closedown annular space, the blocking device of charge of oil pipe must be robbed, once rob dress not in time, easy generation blowout, there is certain potential safety hazard, totally-enclosed blowout preventer borehole apparatus: be generally several semiclosed and one totally-enclosedly to combinationally use, combine up to high more than two meters, work plane is higher, must use by compounding practice platform, play lower tubular column trouble, volume is larger, resettlement assembling is complicated, labor strength is large, costly, be not suitable for light maintenance operation to use.
Summary of the invention
In order to overcome the problems referred to above, the utility model provides a kind of totally-enclosed blowout preventer borehole apparatus, when light maintenance operation, after oil well generation overflow, quick closedown well head can be reached, and can pipe elevator and tubing coupling all be wrapped in totally-enclosed blowout preventer borehole apparatus, really reach the object all closing oil pipe and sleeve pipe, during construction, light maintenance wellhead blowout preventer flange and totally-enclosed blowout preventer borehole apparatus abnormity flange are aligned, be with tight bolt, open blowout-proof pressure cap, blowout-proof pressure cap is flat on light maintenance job platform, normally carry out light maintenance operation, when borehole pressure is excessive, as well kick or blowout sign, oil pipe parting tool is used to cut off oil pipe immediately, buckle blowout-proof pressure cap fast, by retaining mechanism and special-shaped Flange joint, and fast blowout-proof pressure cap is connected fastening with special-shaped flange by well head bolt, and in relief port, connecting line is installed, by in connecting line outlet access oil storage tank.
The technical scheme in the invention for solving the technical problem is: a kind of totally-enclosed blowout preventer borehole apparatus, be made up of blowout-proof pressure cap, relief port, hinge jaw, seal, retaining mechanism, special-shaped flange, its special character is: the side of blowout-proof pressure cap is welded with pressure relief opening and retaining mechanism, abnormity flange upper end is welded with seal, and blowout-proof pressure cap is connected by hinge jaw with special-shaped flange.
The beneficial effects of the utility model are: structure is simple, volume is little, easy to operate, and can meet the work requirements of rapid closing well in 15 seconds, bearing pressure: >=50MPa, can realize closed oil casing annular space and pipe elevator.
Accompanying drawing explanation
Accompanying drawing is schematic diagram of the present utility model.
In accompanying drawing: 1 be blowout-proof pressure cap, 2 are relief ports, 3 are hinge jaws, 4 are seals, 5 are retaining mechanisms, 6 is special-shaped flanges.
Detailed description of the invention
An embodiment is described by reference to the accompanying drawings:
In accompanying drawing: the side of blowout-proof pressure cap 1 is welded with pressure relief opening 2 and retaining mechanism 5, special-shaped flange 6 upper end is welded with seal 4, and blowout-proof pressure cap 1 is connected by hinge jaw 3 with special-shaped flange 6.
Claims (1)
1. a totally-enclosed blowout preventer borehole apparatus, be made up of blowout-proof pressure cap, relief port, hinge jaw, seal, retaining mechanism, special-shaped flange, it is characterized in that: the side of blowout-proof pressure cap is welded with pressure relief opening and retaining mechanism, abnormity flange upper end is welded with seal, and blowout-proof pressure cap is connected by hinge jaw with special-shaped flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285483.4U CN204663452U (en) | 2015-04-29 | 2015-04-29 | Totally-enclosed blowout preventer borehole apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520285483.4U CN204663452U (en) | 2015-04-29 | 2015-04-29 | Totally-enclosed blowout preventer borehole apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204663452U true CN204663452U (en) | 2015-09-23 |
Family
ID=54133844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520285483.4U Expired - Fee Related CN204663452U (en) | 2015-04-29 | 2015-04-29 | Totally-enclosed blowout preventer borehole apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204663452U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456668A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Semi-sealing blowout preventer for oil well fracturing |
-
2015
- 2015-04-29 CN CN201520285483.4U patent/CN204663452U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456668A (en) * | 2020-04-01 | 2020-07-28 | 刘超 | Semi-sealing blowout preventer for oil well fracturing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20160429 |