CN201372736Y - Wear-resisting corrosion-resisting sucker rod collar - Google Patents
Wear-resisting corrosion-resisting sucker rod collar Download PDFInfo
- Publication number
- CN201372736Y CN201372736Y CN200920093115U CN200920093115U CN201372736Y CN 201372736 Y CN201372736 Y CN 201372736Y CN 200920093115 U CN200920093115 U CN 200920093115U CN 200920093115 U CN200920093115 U CN 200920093115U CN 201372736 Y CN201372736 Y CN 201372736Y
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- China
- Prior art keywords
- resisting
- rod collar
- wear
- sucker rod
- corrosion
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- 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 relates to a wear-resisting corrosion-resisting sucker rod collar, which is characterized in that the sucker rod collar is a hollow cylinder; the surface at the middle part of the collar is the square neck plane of a wrench; two ends of an inner cavity are respectively provided with an internal thread; and the outer surface of the sucker rod collar is provided with an wear-resisting corrosion-resisting boriding layer. The sucker rod collar has the advantages that the boriding layer has extremely high hardness and good corrosion resistance, and the thickness of the boriding layer is 0.04-0.09mm to lead the wear and corrosion to be limited to the boriding layer and the collar not to be worn and corroded, thus prolonging the overhaul period of the oil well and improving the economic benefit of the oil field.
Description
Technical field
The utility model belongs to the oil equipment field, relates to a kind of wear resistant corrosion resistant rod collar.
Background technology
Rod-pumped well all is the main oil production method in domestic and international oil field all the time, rod collar then is a critical component in the rod-pumped well, it plays a part to connect sucker rod to the oil well pump transferring power, and domestic sucker rod pumping accounts for artificial lift about 90% of the total well number that recovers the oil.Particularly along with being on the increase of current dark oil well, it is even more important that the effect of rod collar and performance just seem.
In the tradition oil producing operation, sucker rod will be done upper and lower reciprocating motion for a long time in oil well, therefore rod collar not only is subjected to the corrosion of well liquid under arms in the process, and eccentric wear also often takes place in rod collar and oil pick-up tube, often cause the disconnected of sucker rod to take off, often after operation a period of time, promptly need stop production to overhaul, change box cupling, strengthen cost for oil production, become one of bottleneck problem of influence oil recovery production.
The utility model content
The purpose of this utility model provides a kind of wear resistant corrosion resistant rod collar, alleviate the wearing and tearing and the corrosion of box cupling in the oil producing operation greatly, minimizing is because of box cupling wearing and tearing and the frequent situation of changing of corrosion, prolonged the time between overhauls(TBO) of oil well, reduce cost for oil production, thereby solved the problem that exists in the above-mentioned background technology.
For achieving the above object, the utility model provides a kind of wear resistant corrosion resistant rod collar, rod collar is a hollow circular cylinder, the rod collar middle part surface is the square neck plane of spanner, all there is internal thread at the two ends of inner chamber, it is characterized in that: the rod collar external surface is provided with the wear resistant corrosion resistant boride layer.
The utility model has the advantages that: boride layer has high hardness and good decay resistance, the thickness of boride layer is 0.04-0.09mm, makes wearing and tearing and corrosion be confined to infiltration layer itself, and makes unlikely wearing and tearing of box cupling itself and corrosion, prolong the oil well time between overhauls(TBO), improve the economic benefit in oil field.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
With reference to accompanying drawing, rod collar 1 is a cylinder, and the middle part is that 3, two planes, square neck plane of digonous spanner are parallel to each other, cylindrical cavity hollow, and all there is internal thread 4 at the inner chamber two ends, can be connected with the external screw thread of sucker rod.At box cupling 1 external surface boronising treatment process, expand and ooze formation one deck wear resistant corrosion resistant boride layer 2, its thickness is 0.04-0.09mm, makes the wearing and tearing of coupling surface and corrosion be confined to boride layer.
The composition of solid powder boronisation agent is: boron carbide 5%, potassium fluoborate 5%, carborundum 90%, 840-920 ℃ of boronising temperature.
Claims (2)
1, a kind of wear resistant corrosion resistant rod collar, rod collar is a hollow circular cylinder, and its middle part surface is the square neck plane of spanner, and all there is internal thread at the two ends of inner chamber, it is characterized in that: the rod collar external surface is provided with the wear resistant corrosion resistant boride layer.
2, wear resistant corrosion resistant rod collar according to claim 1, it is characterized in that: the thickness of boride layer is 0.04-0.09mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093115U CN201372736Y (en) | 2009-02-27 | 2009-02-27 | Wear-resisting corrosion-resisting sucker rod collar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920093115U CN201372736Y (en) | 2009-02-27 | 2009-02-27 | Wear-resisting corrosion-resisting sucker rod collar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372736Y true CN201372736Y (en) | 2009-12-30 |
Family
ID=41498817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920093115U Expired - Fee Related CN201372736Y (en) | 2009-02-27 | 2009-02-27 | Wear-resisting corrosion-resisting sucker rod collar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201372736Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033112A (en) * | 2014-06-25 | 2014-09-10 | 山东鸿盛石油化工装备有限公司 | Corrosion resisting and button adhesion preventing coupling |
| CN111660072A (en) * | 2020-01-04 | 2020-09-15 | 铁岭中油机械设备制造有限公司 | Manufacturing method of anti-corrosion wear-resistant oil pumping polished rod |
-
2009
- 2009-02-27 CN CN200920093115U patent/CN201372736Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033112A (en) * | 2014-06-25 | 2014-09-10 | 山东鸿盛石油化工装备有限公司 | Corrosion resisting and button adhesion preventing coupling |
| CN111660072A (en) * | 2020-01-04 | 2020-09-15 | 铁岭中油机械设备制造有限公司 | Manufacturing method of anti-corrosion wear-resistant oil pumping polished rod |
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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: 20091230 Termination date: 20140227 |