CN204299486U - A kind of anti-corrosion pipe nipple - Google Patents
A kind of anti-corrosion pipe nipple Download PDFInfo
- Publication number
- CN204299486U CN204299486U CN201420690942.2U CN201420690942U CN204299486U CN 204299486 U CN204299486 U CN 204299486U CN 201420690942 U CN201420690942 U CN 201420690942U CN 204299486 U CN204299486 U CN 204299486U
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- CN
- China
- Prior art keywords
- spelter
- sacrificial anode
- hold
- pipe nipple
- erosion groove
- 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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- Prevention Of Electric Corrosion (AREA)
Abstract
The utility model relates to a kind of anti-corrosion pipe nipple, belongs to the subsurface tool that oil extraction in oil field engineering uses, the anti-corrosion pipe nipple that main application air injection foam well down-hole string is supporting.Comprise tubing pup joint, sacrificial anode spelter, the outer tube wall upper at least two of tubing pup joint saves above sacrificial anode spelter, is formed and hold erosion groove between two joint sacrificial anode spelters.The beneficial effects of the utility model are, be provided with between anticorrosion spelter and hold erosion groove, anticorrosion spelter etching residue comes off, and hold to be stored in and hold in erosion groove, avoid residue to be stuck between anticorrosion spelter and internal surface of sleeve pipe, avoid card tubing string.
Description
Technical field
The utility model relates to a kind of anti-corrosion pipe nipple, belongs to the subsurface tool that oil extraction in oil field engineering uses, the anti-corrosion pipe nipple that main application air injection foam well down-hole string is supporting.
Background technology
Air foam flooding shaft is the important process technology improving oil recovery factor, for avoiding the water injection string of air injection foam to corrode, usually adopts the electrochemical anti-corrosive technology of sacrificial anode, namely connects sacrificial anode spelter anti-corrosion pipe nipple at water injection string.The sacrificial anode spelter entirety of sacrificial anode spelter anti-corrosion pipe nipple is wrapped on oil pipe short circuit outer tube wall.Owing to limitting by oil well casing and water injection string annular clearance, the etching residue that sacrificial anode produces easily comes off and is stuck between sacrificial anode spelter and internal surface of sleeve pipe, causes water injection string by card, needs heavy repair task unfreezing, increases workover cost.
The 201120447338.3 anodic protection anticorrosion structures disclosing a kind of well recovery pipeline, described oil extraction pipeline is formed by the oil pipe column that many are connected by joint hoop, and described oil extraction pipeline is connected with cable guard, and described cable guard internal fixtion has sacrificial anode.Sacrificial anode residue comes off in cable guard, its complex structure, uses the electrochemical anti-corrosive technology of cable, is only applicable to surface gathering and transferring pipeline.
Utility model content
The purpose of this utility model overcomes the etching residue that prior art exists to come off the defect being stuck in and causing card tubing string between anticorrosion spelter and internal surface of sleeve pipe, provides a kind of anti-corrosion pipe nipple, be provided with and hold erosion groove between anticorrosion spelter, avoids that tubing string is stuck causes hole condition accident.
The utility model comprises tubing pup joint, sacrificial anode spelter, and the outer tube wall upper at least two of tubing pup joint saves above sacrificial anode spelter, is formed and hold erosion groove between two joint sacrificial anode spelters.
The beneficial effects of the utility model are, be provided with between anticorrosion spelter and hold erosion groove, anticorrosion spelter etching residue comes off, and hold to be stored in and hold in erosion groove, avoid residue to be stuck between anticorrosion spelter and internal surface of sleeve pipe, avoid card tubing string.
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
With reference to accompanying drawing, the utility model comprises tubing pup joint 1, sacrificial anode spelter 2, and the outer tube wall upper at least two of tubing pup joint 1 saves above sacrificial anode spelter 2, is formed and hold erosion groove 3 between two joint sacrificial anode spelters.
The utility model is gone into the well by design requirements, and in process of production, the residue that sacrificial anode spelter 2 produces when electrochemical reaction, holds to be stored in and hold in erosion groove 3, can effectively prevent card tubing string, protective casing and water injection string can not be corroded again, enhance productivity.
Claims (1)
1. an anti-corrosion pipe nipple, comprises tubing pup joint (1), sacrificial anode spelter (2), it is characterized in that: the outer tube wall upper at least two of tubing pup joint (1) saves above sacrificial anode spelter (2), is formed and hold erosion groove (3) between two joint sacrificial anode spelters
.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690942.2U CN204299486U (en) | 2014-11-18 | 2014-11-18 | A kind of anti-corrosion pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420690942.2U CN204299486U (en) | 2014-11-18 | 2014-11-18 | A kind of anti-corrosion pipe nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204299486U true CN204299486U (en) | 2015-04-29 |
Family
ID=53105032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420690942.2U Expired - Fee Related CN204299486U (en) | 2014-11-18 | 2014-11-18 | A kind of anti-corrosion pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204299486U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154889A (en) * | 2015-09-08 | 2015-12-16 | 中国石油天然气股份有限公司 | Anodic sacrifice protection device for cased well with internal coating |
| CN107575168A (en) * | 2017-08-24 | 2018-01-12 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of anticorrosive casing pipe and arrangement and application |
| CN108979562A (en) * | 2018-06-19 | 2018-12-11 | 门雨晴 | A kind of oil field rotation pipeline and short circuit |
| CN110529056A (en) * | 2019-09-05 | 2019-12-03 | 大庆华油石油科技开发有限公司 | A kind of scalable oil pipe short circuit in producing well |
-
2014
- 2014-11-18 CN CN201420690942.2U patent/CN204299486U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105154889A (en) * | 2015-09-08 | 2015-12-16 | 中国石油天然气股份有限公司 | Anodic sacrifice protection device for cased well with internal coating |
| CN105154889B (en) * | 2015-09-08 | 2017-11-07 | 中国石油天然气股份有限公司 | A kind of sacrificial anode protection device of undercoating cased well |
| CN107575168A (en) * | 2017-08-24 | 2018-01-12 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of anticorrosive casing pipe and arrangement and application |
| CN108979562A (en) * | 2018-06-19 | 2018-12-11 | 门雨晴 | A kind of oil field rotation pipeline and short circuit |
| CN108979562B (en) * | 2018-06-19 | 2019-05-10 | 大庆市璞庆钻采设备制造有限公司 | A kind of oil field rotation pipeline and short circuit |
| CN110529056A (en) * | 2019-09-05 | 2019-12-03 | 大庆华油石油科技开发有限公司 | A kind of scalable oil pipe short circuit in producing well |
| CN110529056B (en) * | 2019-09-05 | 2020-09-22 | 大庆华油石油科技开发有限公司 | Telescopic oil pipe short joint for oil production well |
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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: 20150429 Termination date: 20191118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |