CN2534363Y - Wellhead blowout preventer - Google Patents
Wellhead blowout preventer Download PDFInfo
- Publication number
- CN2534363Y CN2534363Y CN 02203812 CN02203812U CN2534363Y CN 2534363 Y CN2534363 Y CN 2534363Y CN 02203812 CN02203812 CN 02203812 CN 02203812 U CN02203812 U CN 02203812U CN 2534363 Y CN2534363 Y CN 2534363Y
- Authority
- CN
- China
- Prior art keywords
- blowout prevention
- polished rod
- blowout
- roller
- ball
- 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
A wellhead blowout prevention device mainly consists of a blowout prevention box, a roller, a blowout prevention sealing ball, a ball base, a spring and a polished rod, which is characterized in that the polished rod is provided in the middle of the blowout prevention box. The roller is provided between the polished rod at one side of the blowout prevention box and the blowout prevention sealing ball. The blowout prevention sealing ball is connected with the spring by the ball base. With the utility model, when the oil well works normally, the roller is against the polished rod at the spring force, and when the polished rod is broken off the well, the blowout prevention sealing ball goes into a seal cavity at the spring force, at this time, the blowout prevention sealing ball goes up to a blowout prevention port to form a sealing at the action of mixing water pressure, oil outlet pipe line pressure and downhole pressure, thus preventing wellhead blowout effectively.
Description
Technical field
The utility model relates to a kind of wellhead blowout preventer.
Background technology
Sucker rod pumping is one of our times petroleum industry tradition oil production method, nearly 80% sucker rod pumping technology in each field produces well of China, and the sucker rod pumping technology is occupied important proportion in the China's oil exploitation; In the prior art condition, its polished rod is disconnected take off after, generally all can fall in the well, the well head packing_seal is ineffective, at this moment, water mixing under the effect of the back pressure in the station of the oil in the flow line, all can spray well head under the effect of water mixing pressure; If borehole pressure is higher, the crude oil in shaft bottom also can spray well head; This not only causes pollution in wide area, the follow-up work difficulty, and cause the substantial oil waste, lose bigger.
Summary of the invention
At the shortcoming that above-mentioned prior art exists, the utility model provides a kind of wellhead blowout preventer.
The technical solution adopted in the utility model is: a kind of wellhead blowout preventer; Mainly form by blowout prevention box, roller, blowout prevention ball sealer, ball seat, spring and polished rod; It is characterized in that: be equipped with polished rod in the middle of the blowout prevention box, be provided with roller between blowout prevention box one side polished rod and blowout prevention ball sealer, the blowout prevention ball sealer connects spring by ball seat.
Above-mentioned polished rod is used for junctor and adopts power-equipment and sucker rod combination; On well head, be provided with the combinations thereof device, the flow tee and the splicing sleeve of the oil gas aqueous fluid of stream 0.8-1.5Mpa and big four that oil, cover are separated in well head also is provided with simultaneously.
By the utility model wellhead blowout preventer, when the oil well operate as normal, roller heads on polished rod under the effect of spring force; When polished rod is disconnected when taking off in the well, spray-proof ball enters annular seal space under the effect of spring force, at this moment, under the pressure of spray-proof ball in water mixing pressure, flow line, the bottom pressure effect, goes upward to anti-spout, forms sealing, thereby has carried out the well head blowout prevention effectively.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model scheme of installation.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and the specific embodiments.
As shown in Figure 2, the utility model wellhead blowout preventer 1 mainly is made up of blowout prevention box 2, roller 3, blowout prevention ball sealer 4, ball seat 5, spring 6 and polished rod 7; Wherein, be equipped with polished rod 7 in the middle of blowout prevention box 2, be provided with roller 3 between blowout prevention box 2 one side polished rods 7 and blowout prevention ball sealer 4, blowout prevention ball sealer 4 connects spring 6 by ball seat 5.
As shown in Figure 2, polished rod 7 is used for junctor and adopts power-equipment and sucker rod combination (figure does not show); On well head, be provided with wellhead blowout preventer 1, the flow tee 8 and the splicing sleeve of the oil gas aqueous fluid of stream 0.8-1.5Mpa and big four 9 that oil, cover are separated in well head also is provided with simultaneously.
Be preferred embodiment of the present utility model in sum, all changes of making according to technical solutions of the utility model, the function that is produced all belong to protection domain of the present utility model when not exceeding the scope of technical solutions of the utility model.
Claims (2)
1, a kind of wellhead blowout preventer; Mainly form by blowout prevention box, roller, blowout prevention ball sealer, ball seat, spring and polished rod; It is characterized in that: be equipped with polished rod in the middle of the blowout prevention box, be provided with roller between blowout prevention box one side polished rod and blowout prevention ball sealer, the blowout prevention ball sealer connects spring by ball seat.
2, wellhead blowout preventer as claimed in claim 1 is characterized in that: above-mentioned polished rod is used for junctor and adopts power-equipment and sucker rod combination; On well head, be provided with the combinations thereof device, the flow tee and the splicing sleeve of the oil gas aqueous fluid of stream 0.8-1.5Mpa and big four that oil, cover are separated in well head also is provided with simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203812 CN2534363Y (en) | 2002-02-06 | 2002-02-06 | Wellhead blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02203812 CN2534363Y (en) | 2002-02-06 | 2002-02-06 | Wellhead blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534363Y true CN2534363Y (en) | 2003-02-05 |
Family
ID=33685880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02203812 Expired - Fee Related CN2534363Y (en) | 2002-02-06 | 2002-02-06 | Wellhead blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534363Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711451A (en) * | 2013-12-10 | 2014-04-09 | 段鹏飞 | Oil-well broken rod blowout preventer |
-
2002
- 2002-02-06 CN CN 02203812 patent/CN2534363Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711451A (en) * | 2013-12-10 | 2014-04-09 | 段鹏飞 | Oil-well broken rod blowout preventer |
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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 |