CN105257236A - Wellhead blowout preventer - Google Patents
Wellhead blowout preventer Download PDFInfo
- Publication number
- CN105257236A CN105257236A CN201510715648.1A CN201510715648A CN105257236A CN 105257236 A CN105257236 A CN 105257236A CN 201510715648 A CN201510715648 A CN 201510715648A CN 105257236 A CN105257236 A CN 105257236A
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- CN
- China
- Prior art keywords
- blowout preventer
- valve
- wellhead
- wellhead blowout
- ball valve
- 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.)
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Abstract
The invention discloses a wellhead blowout preventer. The wellhead blowout preventer is used for wellhead equipment replacement under pressure in an oilfield, mounted between a wellhead flange and an oil production tree, and characterized by comprising a main body, a sealing body, an upper ball seat, a lower ball seat, a ball valve, a short sleeve, discharging valves and injecting valves; the discharging valves and the injecting valves are symmetrically arranged on two sides of the main body; the upper ball seat and the lower ball seat clamp the ball valve to ensure that the ball valve is arranged at a central position of the main body; the sealing body fixes the short sleeve to ensure that the short sleeve penetrates through the main body and the ball valve. The wellhead blowout preventer adopts a ball valve sealing mode, prevents and controls occurrence of a blowout accident, and is simple in structure, simple to operate, lower in construction cost, and higher in production efficiency.
Description
Technical field
The present invention relates to oilfield, particularly relate to a kind of wellhead blowout preventer.
Background technology
Prior art oil field shaft mouth replace with pressure wellhead equipment, needs first by wellhead sealing, this operation element amount is large, cost is high, wastes time and energy, and there is very large potential safety hazard.
Summary of the invention
In order to solve the problems of the technologies described above, the invention provides a kind of wellhead blowout preventer.
Wellhead blowout preventer provided by the invention comprises for oil field shaft mouth replace with pressure wellhead equipment, described wellhead blowout preventer is arranged between wellhead flange and production tree, described wellhead blowout preventer comprises body, seal, upper ball base, lower ball base, ball valve, short sleeve, drain valve and injection valve, described drain valve and injection valve are symmetrically set in the both sides of described body, described upper ball base and described lower ball base clamp the center that described ball valve is located at described body, and described seal is fixed described short sleeve and run through described body and described ball valve.
In a kind of preferred embodiment of the present invention, also comprise trapezoidal cushion rubber and disc spring, described trapezoidal cushion rubber is fixed described ball valve and is located between described upper ball base and described lower ball base, and described disc spring is located on short sleeve and connects described upper ball base and described lower ball base.
In a kind of preferred embodiment of the present invention, also comprise plug, circlip for hole and equalizing valve, described plug and circlip for hole are located at the both sides of described body respectively, seal described equalizing valve and are located in described body.
In a kind of preferred embodiment of the present invention, also comprise shelves silk, valve rod and direction board, described shelves silk, valve rod and direction board are located at the one end away from described equalizing valve, and described shelves silk and direction board seal described valve rod to be run through described body and is partly located at described ball valve.
In a kind of preferred embodiment of the present invention, also comprise multiple O shape cushion rubber, described multiple O shape cushion rubber is located in the gap of described body respectively.
In a kind of preferred embodiment of the present invention, described O shape cushion rubber is nitrile rubber.
In a kind of preferred embodiment of the present invention, described wellhead blowout preventer is connected by greasing with described production tree.
In a kind of preferred embodiment of the present invention, also comprise greasing flange, described wellhead flange and described greasing Flange joint.
In a kind of preferred embodiment of the present invention, described ball valve is provided with through hole and ball valve plug, and described ball valve plug is plugged in described through hole.
Compared to prior art, wellhead blowout preventer provided by the invention adopts ball valve sealing, and prevent and control the generation of gas blowout accident, this structure operation is simple, and saving construction cost, enhances productivity.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings, wherein:
Fig. 1 is the plane structure schematic diagram of wellhead blowout preventer provided by the invention;
Fig. 2 is the sectional drawing in the K-K of wellhead blowout preventer shown in Fig. 1 face.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Please refer to Fig. 1 and Fig. 2, wellhead blowout preventer provided by the invention comprises for oil field shaft mouth replace with pressure wellhead equipment, and described wellhead blowout preventer is arranged between wellhead flange and production tree.
Described wellhead blowout preventer comprises body 1, seal 2, upper ball base 3, lower ball base 8, ball valve 4, short sleeve 16, drain valve 18 and injection valve 17, described drain valve 18 and injection valve 17 are symmetrically set in the both sides of described body 1, described upper ball base 3 and described lower ball base 8 clamp the center that described ball valve 4 is located at described body 1, and described seal 2 is fixed described short sleeve 16 and run through described body 1 and described ball valve 4.
Preferably, described wellhead blowout preventer also comprises trapezoidal cushion rubber 7, disc spring 9, draws together plug 10, circlip for hole 6, equalizing valve 5, shelves silk 13, valve rod 12 and direction board 11, described trapezoidal cushion rubber 7 is fixed described ball valve 4 and is located between described upper ball base 3 and described lower ball base 8, and described disc spring 9 is located on short sleeve 16 and connects described upper ball base 3 and described lower ball base 8; Described plug 10 and circlip for hole 6 are located at the both sides of described body 1 respectively, seal described equalizing valve 5 and are located in described body 1; Described shelves silk 13, valve rod 12 and direction board 11 are located at the one end away from described equalizing valve 5, and described shelves silk 13 and direction board 11 seal described valve rod 12 to be run through described body 1 and is partly located at described ball valve 4.
Preferably, described wellhead blowout preventer also comprises multiple O shape cushion rubber, described multiple O shape cushion rubber is located in the gap of described body respectively, further, described O shape cushion rubber is the first cushion rubber 19, second cushion rubber 20, the 3rd cushion rubber 21, the 4th cushion rubber 22, the 5th cushion rubber 23, the 6th cushion rubber 24, and described first cushion rubber 19, described 3rd cushion rubber 21, described 4th cushion rubber 22 seal described short sleeve 16 and described body 1; Described second cushion rubber 20 seals described plug 10 and described body 1; Described 5th cushion rubber 23 seals described circlip for hole 6 and described body 1; Described 6th cushion rubber 24 seals described valve rod 12 and described body 1.
Preferably, also comprise the first screw 14 and the second screw 15, described first screw 14 and the second screw 15 are fixed described shelves silk 13 and are located at described body 1.
In a kind of preferred embodiment of the present invention, described O shape cushion rubber is nitrile rubber.
Further, described wellhead blowout preventer is connected by greasing with described production tree; Also comprise greasing flange (figure does not look), described wellhead flange and described greasing Flange joint.
In the present embodiment, described ball valve is provided with through hole and ball valve plug (figure does not look), when described ball valve is closed, described ball valve plug is plugged in described through hole, when described ball valve is opened, is taken out by described ball valve plug in described through hole, increase well head flow, reduce pressure.
When needing replace with pressure wellhead equipment, when ball valve is opened, inner water pressure testing 70MPa keeps not falling for 30 minutes, and when ball valve is closed, bottom water pressure testing 20MPa keeps not falling for 30 minutes.
In sum, wellhead blowout preventer provided by the invention adopts ball valve sealing, and prevent and control the generation of gas blowout accident, this structure operation is simple, and saving construction cost, enhances productivity.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize manual of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a wellhead blowout preventer, for oil field shaft mouth replace with pressure wellhead equipment, described wellhead blowout preventer is arranged between wellhead flange and production tree, it is characterized in that, described wellhead blowout preventer comprises body, seal, upper ball base, lower ball base, ball valve, short sleeve, drain valve and injection valve, described drain valve and injection valve are symmetrically set in the both sides of described body, described upper ball base and described lower ball base clamp the center that described ball valve is located at described body, and described seal is fixed described short sleeve and run through described body and described ball valve.
2. wellhead blowout preventer according to claim 1, it is characterized in that, also comprise trapezoidal cushion rubber and disc spring, described trapezoidal cushion rubber is fixed described ball valve and is located between described upper ball base and described lower ball base, and described disc spring is located on short sleeve and connects described upper ball base and described lower ball base.
3. wellhead blowout preventer according to claim 1, is characterized in that, also comprises plug, circlip for hole and equalizing valve, and described plug and circlip for hole are located at the both sides of described body respectively, seals described equalizing valve and is located in described body.
4. wellhead blowout preventer according to claim 3, it is characterized in that, also comprise shelves silk, valve rod and direction board, described shelves silk, valve rod and direction board are located at the one end away from described equalizing valve, and described shelves silk and direction board seal described valve rod to be run through described body and is partly located at described ball valve.
5. wellhead blowout preventer according to claim 1, is characterized in that, also comprises multiple O shape cushion rubber, and described multiple O shape cushion rubber is located in the gap of described body respectively.
6. wellhead blowout preventer according to claim 1, is characterized in that, described O shape cushion rubber is nitrile rubber.
7. wellhead blowout preventer according to claim 1, is characterized in that, described wellhead blowout preventer is connected by greasing with described production tree.
8. wellhead blowout preventer according to claim 1, is characterized in that, also comprises greasing flange, described wellhead flange and described greasing Flange joint.
9. wellhead blowout preventer according to claim 1, is characterized in that, described ball valve is provided with through hole and ball valve plug, and described ball valve plug is plugged in described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510715648.1A CN105257236A (en) | 2015-10-29 | 2015-10-29 | Wellhead blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510715648.1A CN105257236A (en) | 2015-10-29 | 2015-10-29 | Wellhead blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105257236A true CN105257236A (en) | 2016-01-20 |
Family
ID=55097126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510715648.1A Pending CN105257236A (en) | 2015-10-29 | 2015-10-29 | Wellhead blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257236A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266785A (en) * | 2023-11-17 | 2023-12-22 | 江苏苏盐阀门机械有限公司 | Blowout preventer for wellhead |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562888A (en) * | 1984-01-12 | 1986-01-07 | Collet James R | Tubing head adapter and valve |
| RU2191884C2 (en) * | 2001-01-09 | 2002-10-27 | Абрамов Александр Федорович | Device for wellhead sealing |
| CN2618010Y (en) * | 2003-01-07 | 2004-05-26 | 北京迪威尔石油天然气技术开发有限公司 | Sealed grease filling throughout valves |
| US20070007483A1 (en) * | 2005-07-06 | 2007-01-11 | Leblanc John R | Double-stop floating ball valve |
| CN200949439Y (en) * | 2006-08-08 | 2007-09-19 | 美国钻采系统(上海)有限公司 | Oil pipe hanger device with cut-off valve |
| CN201024987Y (en) * | 2006-11-18 | 2008-02-20 | 张爱萍 | Separated multi-channel rotary valve |
| CN201306146Y (en) * | 2008-11-22 | 2009-09-09 | 宝鸡石油机械有限责任公司 | Inner blowout preventing device with pressure balance and combined seal |
| CN102071908A (en) * | 2010-12-16 | 2011-05-25 | 张跃 | Anti-blowout control valve |
| CN204941431U (en) * | 2015-09-07 | 2016-01-06 | 江苏新彩阳机电技术有限公司 | A kind of Operating Pressure sleeve pipe ground cutoff device |
| CN205743818U (en) * | 2015-10-29 | 2016-11-30 | 宝鸡巨基机械制造有限公司 | Wellhead blowout preventer |
-
2015
- 2015-10-29 CN CN201510715648.1A patent/CN105257236A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4562888A (en) * | 1984-01-12 | 1986-01-07 | Collet James R | Tubing head adapter and valve |
| RU2191884C2 (en) * | 2001-01-09 | 2002-10-27 | Абрамов Александр Федорович | Device for wellhead sealing |
| CN2618010Y (en) * | 2003-01-07 | 2004-05-26 | 北京迪威尔石油天然气技术开发有限公司 | Sealed grease filling throughout valves |
| US20070007483A1 (en) * | 2005-07-06 | 2007-01-11 | Leblanc John R | Double-stop floating ball valve |
| CN200949439Y (en) * | 2006-08-08 | 2007-09-19 | 美国钻采系统(上海)有限公司 | Oil pipe hanger device with cut-off valve |
| CN201024987Y (en) * | 2006-11-18 | 2008-02-20 | 张爱萍 | Separated multi-channel rotary valve |
| CN201306146Y (en) * | 2008-11-22 | 2009-09-09 | 宝鸡石油机械有限责任公司 | Inner blowout preventing device with pressure balance and combined seal |
| CN102071908A (en) * | 2010-12-16 | 2011-05-25 | 张跃 | Anti-blowout control valve |
| CN204941431U (en) * | 2015-09-07 | 2016-01-06 | 江苏新彩阳机电技术有限公司 | A kind of Operating Pressure sleeve pipe ground cutoff device |
| CN205743818U (en) * | 2015-10-29 | 2016-11-30 | 宝鸡巨基机械制造有限公司 | Wellhead blowout preventer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266785A (en) * | 2023-11-17 | 2023-12-22 | 江苏苏盐阀门机械有限公司 | Blowout preventer for wellhead |
| CN117266785B (en) * | 2023-11-17 | 2024-02-20 | 江苏苏盐阀门机械有限公司 | Blowout preventer for wellhead |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160120 |
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| RJ01 | Rejection of invention patent application after publication |