CN201546657U - Polished rod break-off blowout preventer - Google Patents
Polished rod break-off blowout preventer Download PDFInfo
- Publication number
- CN201546657U CN201546657U CN2009200949317U CN200920094931U CN201546657U CN 201546657 U CN201546657 U CN 201546657U CN 2009200949317 U CN2009200949317 U CN 2009200949317U CN 200920094931 U CN200920094931 U CN 200920094931U CN 201546657 U CN201546657 U CN 201546657U
- Authority
- CN
- China
- Prior art keywords
- ball sealer
- blowout preventer
- polished rod
- connecting section
- accommodating pipe
- 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 discloses a polished rod break-off blowout preventer used in producing wells. The blowout preventer comprises a connecting section, a ball sealer, an ejection spring, an accommodating pipe and a plug, wherein, the accommodating pipe is perpendicular to the connecting section and is communicated therewith; the ball sealer and the ejection spring are arranged in the accommodating pipe from the inside out; the plug is in sealed screwed connection with the outer end of the accommodating pipe; and the diameter of the ball sealer is smaller than the internal pipe diameter of the connecting section. When the break-off blowout preventer is in use, the connecting section is connected to the lower part of a packing box, and an oil pumping polished rod moves up and down in the connecting section in a reciprocating manner, so as to pump oil; when the oil pumping polished rod is broken off, the blowout preventer can prevent the generation of blowout; and when the plug, the ejection spring and the ball sealer are dismounted from the blowout preventer, pressure of a pit shaft can be released through the accommodating pipe.
Description
Technical field
The utility model relates to the disconnected preventer that takes off of polished rod that a kind of producing well is used.
Background technology
When the oil pumping polish rod in the well casing of producing well is disconnected take off after, blowout will take place, have a strong impact on oil producing operation, and can waste crude oil and pollute the environment of periphery.
Summary of the invention
The purpose of this utility model is for after solving that oil pumping polish rod is disconnected and taking off, and the problem of blowout takes place, and provide a kind of oil pumping polish rod is disconnected take off after, the disconnected preventer that takes off of polished rod of blowout can not take place.
The utility model is formed by connecting joint, ball sealer, pushing top spring, containing tube and shutoff, containing tube is perpendicular to connecting joint, and be connected joint and be communicated with, ball sealer and pushing top spring are set in the containing tube from inside to outside, the outer end of containing tube seals the shutoff that is spirally connected, and the diameter of ball sealer is less than the bore that connects joint, during use, connect joint and be connected the packing box below, oil pumping polish rod pumps in connecting joint and pumps.
The utility model prevents that the principle of blowout from being: when oil pumping polish rod is disconnected take off after, shutoff enters and connects in the joint under the ejection of pushing top spring, under the pressure of oil well, ball sealer moves upward shutoff connecting the junction of joint with packing box, prevents the generation of blowout.
The beneficial effects of the utility model are:
1, when oil pumping polish rod is disconnected take off after, can prevent the generation of blowout.
2, shutoff, pushing top spring and ball sealer are disassembled after, can let out the pressure of pit shaft from containing tube.
Description of drawings
Fig. 1 is the cross-sectional schematic of the utility model embodiment.
The specific embodiment
See also shown in Figure 1, be embodiment of the present utility model, it is formed by connecting joint 1, ball sealer 3, pushing top spring 4, containing tube 5 and shutoff 2, containing tube 5 perpendicular to connect joint 1 and with is connected joint 1 and is communicated with, ball sealer 3 and pushing top spring 4 are set in the containing tube 5 from inside to outside, the outer end of containing tube 5 seals the shutoff 2 that is spirally connected, the diameter of ball sealer 3 is less than the bore that connects joint 1, during use, connect joint 1 and be connected the packing box below, oil pumping polish rod pumps in connecting joint 1 and pumps.
The material of described ball sealer 3 is a rigid plastics.
Claims (2)
1. the disconnected preventer that takes off of a polished rod, it is characterized in that: form by connecting joint, ball sealer, pushing top spring, containing tube and shutoff, containing tube is perpendicular to connecting joint, and be connected joint and be communicated with, ball sealer and pushing top spring are set in the containing tube from inside to outside, the outer end of containing tube seals the shutoff that is spirally connected, and the diameter of ball sealer is less than the bore that connects joint.
2. a kind of polished rod according to claim 1 is disconnected to take off preventer, and it is characterized in that: the material of described ball sealer is a rigid plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200949317U CN201546657U (en) | 2009-12-15 | 2009-12-15 | Polished rod break-off blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200949317U CN201546657U (en) | 2009-12-15 | 2009-12-15 | Polished rod break-off blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201546657U true CN201546657U (en) | 2010-08-11 |
Family
ID=42601831
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200949317U Expired - Fee Related CN201546657U (en) | 2009-12-15 | 2009-12-15 | Polished rod break-off blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201546657U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389552A (en) * | 2014-11-04 | 2015-03-04 | 大庆博海天地环保科技有限公司 | Blowout-proof wellhead valve |
| CN105756606A (en) * | 2016-03-09 | 2016-07-13 | 苏州华冲精密机械有限公司 | Blowout preventer shell |
-
2009
- 2009-12-15 CN CN2009200949317U patent/CN201546657U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104389552A (en) * | 2014-11-04 | 2015-03-04 | 大庆博海天地环保科技有限公司 | Blowout-proof wellhead valve |
| CN105756606A (en) * | 2016-03-09 | 2016-07-13 | 苏州华冲精密机械有限公司 | Blowout preventer shell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100811 Termination date: 20101215 |