CN102644444A - Double-seal anti-corrosion water injection well oil pipe - Google Patents
Double-seal anti-corrosion water injection well oil pipe Download PDFInfo
- Publication number
- CN102644444A CN102644444A CN2012101210385A CN201210121038A CN102644444A CN 102644444 A CN102644444 A CN 102644444A CN 2012101210385 A CN2012101210385 A CN 2012101210385A CN 201210121038 A CN201210121038 A CN 201210121038A CN 102644444 A CN102644444 A CN 102644444A
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- China
- Prior art keywords
- oil pipe
- injection well
- sealing ring
- well tubing
- box cupling
- 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 double-seal anti-corrosion water injection well oil pipe, which comprises an oil pipe and a coupling. External threads capable of coming into sealed connection with the coupling are arranged outside two ends of the oil pipe respectively; a first seal ring is inlaid in a position at the tail part of the external threads on the outer wall of the oil pipe; an annular groove is provided at the middle position inside the coupling and a second seal ring is inlaid in the annular groove; when the oil pipe and the coupling are screwed down, the first seal ring is expanded at a boring of the coupling by pressing to therefore prevent a corrosion medium from entering the threaded connection from the outside of the oil pipe; and the second seal ring tightly seals at the oil pipe end face by pressing, to therefore prevent a corrosion medium from entering the threads from the inside of the oil pipe. The invention can prevent corrosion to the threads of the oil pipe and improve the corrosion resistance of the oil pipe.
Description
Technical field
The present invention relates to water injection well tubing string in a kind of oil field, relate in particular to the anticorrosion injection well tubing of a kind of double containment, belong to the oil recovery machiner technical field.
Background technology
Recover the oil in the production, the water injection well sewage salinity is high, and is serious to tube corrosion; The use of anti-corrosion pipe also experienced one by rudimentary to senior evolution, from coating anti-corrosion pipe, coating antiseptic pipe, anti-corrosive pipe with lining etc., antiseptic property changes to some extent; But it is all not ideal enough; It is anticorrosion that reason is that existing anti-corrosion pipe all can not be carried out the screw thread that connects usefulness between the oil pipe, and screw thread is the most perishable position, and the inefficacy majority of oil pipe occurs in the screw thread position.
Summary of the invention
The problem that the present invention will solve is in order to overcome above-mentioned technological deficiency, a kind of anticorrosion injection well tubing of double containment that prevents the tubing round thread corrosion to be provided, having improved the antiseptic property of oil pipe.
In order to address the above problem, the present invention adopts following technical scheme:
The anticorrosion injection well tubing of a kind of double containment comprises oil pipe, box cupling; The outside, two ends of oil pipe is respectively equipped with the external screw thread that can be tightly connected with box cupling, and the position that is positioned at externally threaded afterbody place on the outer wall of oil pipe is inlaid with joint ring, and the centre position in the box cupling has annular groove, in annular groove, is inlaid with sealing ring.
Below be the further improvement of the present invention to such scheme:
The joint ring of said joint ring for processing with resistant material.
Further improve: said joint ring is the sealing copper sheathing.
The another kind of improvement:
The sealing ring of said sealing ring for adopting the corrosion resisting elastic material to process.
Further improve: said sealing ring is a rubber seal.
The another kind of improvement:
The internal diameter of sealing ring is less than the internal diameter of box cupling.
Further improve: the internal diameter of sealing ring is identical with the internal diameter of oil pipe, has made things convenient for the smooth circulation of crude oil in the oil pipe.
When oil pipe and box cupling were tightened, joint ring expanded at box cupling bore hole place through extruding, thereby stoped corrosive medium by the outside threaded connection place that gets into of oil pipe; Sealing ring tightly is sealed in the oil pipe end face through extruding, thereby prevents that corrosive medium is by the inner screw thread place that gets into of oil pipe.
It is anticorrosion that the present invention adopts such scheme to carry out the screw thread of oil pipe, improved the antiseptic property of oil pipe.
Below in conjunction with accompanying drawing and embodiment the present invention is described further.
Description of drawings
Accompanying drawing 1 is the structural representation of the embodiment of the invention;
Accompanying drawing 2 is an I place enlarged drawing in the accompanying drawing 1.
Among the figure: the 1-oil pipe; The 2-box cupling; The 3-sealing ring; The 4-joint ring; 5-box cupling bore hole.
The specific embodiment
Embodiment, like Fig. 1, shown in Figure 2, the anticorrosion injection well tubing of a kind of double containment comprises oil pipe 1, box cupling 2; The outside, two ends of oil pipe 1 is respectively equipped with the external screw thread that can be tightly connected with box cupling 2; The position that is positioned at externally threaded afterbody place on the outer wall of oil pipe 1 is inlaid with the joint ring of processing with resistant material 4; Centre position in the box cupling 2 has annular groove; In annular groove, be inlaid with the sealing ring of processing with the corrosion resisting elastic material 3, the internal diameter of sealing ring 3 is less than the internal diameter of box cupling 2.The internal diameter of sealing ring 3 is identical with the internal diameter of oil pipe 1.
Be positioned in the box cupling 2 be respectively equipped with on the inwall of sealing ring 3 both sides with oil pipe 1 on the internal thread that is tightly connected of external screw thread, the two ends of box cupling 2 are respectively equipped with box cupling bore hole 5.
When oil pipe 1 and box cupling 2 were tightened, joint ring 4 expanded at box cupling bore hole 5 places through extruding, thereby stoped corrosive medium by the oil pipe 1 outside threaded connection place that gets into; Sealing ring 3 tightly is sealed in the oil pipe end face through extruding, thereby prevents that corrosive medium is by the inner screw thread place that gets into of oil pipe.
The double containment anticorrosion injection well tubing that the present invention adopts such scheme to provide can effectively prevent the corrosion of screw thread on the oil pipe, has improved the antiseptic property of oil pipe.
In the foregoing description, said joint ring is not limited to the sealing copper sheathing, the joint ring that can also adopt other material with corrosion-resistance properties to process.
In the foregoing description, said sealing ring is not limited to rubber seal, the sealing ring that can also adopt resistant materials such as polyvinyl or polytetrafluoroethylene (PTFE) to process.
More than be that the preferred embodiments of the present invention describe, should be appreciated that preferred embodiment described herein only is used for explanation and explains the present invention, and be not used in qualification the present invention.
Claims (7)
1. the anticorrosion injection well tubing of double containment comprises oil pipe, box cupling; It is characterized in that: the outside, two ends of oil pipe is respectively equipped with the external screw thread that can be tightly connected with box cupling; The position that is positioned at externally threaded afterbody place on the outer wall of oil pipe is inlaid with joint ring; Centre position in the box cupling has annular groove, in annular groove, is inlaid with sealing ring.
2. the anticorrosion injection well tubing of a kind of double containment according to claim 1 is characterized in that: the joint ring of said joint ring for processing with resistant material.
3. the anticorrosion injection well tubing of double containment according to claim 1 and 2 is characterized in that: said joint ring is the sealing copper sheathing.
4. the anticorrosion injection well tubing of double containment according to claim 1 is characterized in that: the sealing ring of said sealing ring for adopting the corrosion resisting elastic material to process.
5. according to claim 1 or the anticorrosion injection well tubing of 4 described double containments, it is characterized in that: said sealing ring is a rubber seal.
6. the anticorrosion injection well tubing of double containment according to claim 1, it is characterized in that: the internal diameter of sealing ring is less than the internal diameter of box cupling.
7. according to claim 1 or the anticorrosion injection well tubing of 6 described double containments, it is characterized in that: the internal diameter of sealing ring is identical with the internal diameter of oil pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101210385A CN102644444A (en) | 2012-04-24 | 2012-04-24 | Double-seal anti-corrosion water injection well oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101210385A CN102644444A (en) | 2012-04-24 | 2012-04-24 | Double-seal anti-corrosion water injection well oil pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102644444A true CN102644444A (en) | 2012-08-22 |
Family
ID=46657500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101210385A Pending CN102644444A (en) | 2012-04-24 | 2012-04-24 | Double-seal anti-corrosion water injection well oil pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102644444A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287044A (en) * | 2016-08-16 | 2017-01-04 | 陆金福 | There is the screw connection structure of the band coating steel pipe of corrosion proof function |
| CN107940123A (en) * | 2017-12-22 | 2018-04-20 | 中国石油化工股份有限公司 | A kind of polyketone internal lining pipe, polyketone liner composite oil pipe and preparation method thereof |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572777A (en) * | 1969-05-05 | 1971-03-30 | Armco Steel Corp | Multiple seal, double shoulder joint for tubular products |
| CN2077901U (en) * | 1990-12-03 | 1991-05-29 | 石油勘探开发科研院机械研究所 | Hollow sucker rod with same diameter |
| DE4239092A1 (en) * | 1992-11-20 | 1994-05-26 | Preussag Anlagenbau | Electrically testable plastic pipe jointing for underground water - is sealed at two sepd. points by compression of elastic rings into grooves when bevelled ends of pipe encounter collar of sleeve |
| CN2177794Y (en) * | 1993-07-27 | 1994-09-21 | 高迺科 | Hollow sucker rod |
| FR2848282A1 (en) * | 2002-12-09 | 2004-06-11 | Vallourec Mannesmann Oil & Gas | Making a threaded tubular joint sealed from the outside by inserting a sealing ring seated in the female element for use in hydrocarbon pipelines |
| US6851726B2 (en) * | 1998-08-25 | 2005-02-08 | John T. Minemyer | Radial conduit coupling system and method |
| CN2881270Y (en) * | 2006-03-14 | 2007-03-21 | 潘德岐 | Screw-threaded joint for sealing |
| CN201246540Y (en) * | 2008-08-28 | 2009-05-27 | 胜利油田胜机石油装备有限公司 | Anti-corrosive oil pipe joint |
| CN201474626U (en) * | 2009-09-02 | 2010-05-19 | 孙月东 | Reverse buckle double joint |
| CN202176275U (en) * | 2011-08-02 | 2012-03-28 | 西南石油大学 | API (American Petroleum Institute) petroleum sleeve threaded connecting structure for preventing flow field induced corrosion and improving sealing property |
| CN202560116U (en) * | 2012-04-24 | 2012-11-28 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
-
2012
- 2012-04-24 CN CN2012101210385A patent/CN102644444A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3572777A (en) * | 1969-05-05 | 1971-03-30 | Armco Steel Corp | Multiple seal, double shoulder joint for tubular products |
| CN2077901U (en) * | 1990-12-03 | 1991-05-29 | 石油勘探开发科研院机械研究所 | Hollow sucker rod with same diameter |
| DE4239092A1 (en) * | 1992-11-20 | 1994-05-26 | Preussag Anlagenbau | Electrically testable plastic pipe jointing for underground water - is sealed at two sepd. points by compression of elastic rings into grooves when bevelled ends of pipe encounter collar of sleeve |
| CN2177794Y (en) * | 1993-07-27 | 1994-09-21 | 高迺科 | Hollow sucker rod |
| US6851726B2 (en) * | 1998-08-25 | 2005-02-08 | John T. Minemyer | Radial conduit coupling system and method |
| FR2848282A1 (en) * | 2002-12-09 | 2004-06-11 | Vallourec Mannesmann Oil & Gas | Making a threaded tubular joint sealed from the outside by inserting a sealing ring seated in the female element for use in hydrocarbon pipelines |
| CN2881270Y (en) * | 2006-03-14 | 2007-03-21 | 潘德岐 | Screw-threaded joint for sealing |
| CN201246540Y (en) * | 2008-08-28 | 2009-05-27 | 胜利油田胜机石油装备有限公司 | Anti-corrosive oil pipe joint |
| CN201474626U (en) * | 2009-09-02 | 2010-05-19 | 孙月东 | Reverse buckle double joint |
| CN202176275U (en) * | 2011-08-02 | 2012-03-28 | 西南石油大学 | API (American Petroleum Institute) petroleum sleeve threaded connecting structure for preventing flow field induced corrosion and improving sealing property |
| CN202560116U (en) * | 2012-04-24 | 2012-11-28 | 山东东宝钢管有限公司 | Double-seal anti-corrosion water injection well oil pipe |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106287044A (en) * | 2016-08-16 | 2017-01-04 | 陆金福 | There is the screw connection structure of the band coating steel pipe of corrosion proof function |
| CN107940123A (en) * | 2017-12-22 | 2018-04-20 | 中国石油化工股份有限公司 | A kind of polyketone internal lining pipe, polyketone liner composite oil pipe and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120822 |