CN2534356Y - Sucker pole coupling centralizer - Google Patents
Sucker pole coupling centralizer Download PDFInfo
- Publication number
- CN2534356Y CN2534356Y CN 02238290 CN02238290U CN2534356Y CN 2534356 Y CN2534356 Y CN 2534356Y CN 02238290 CN02238290 CN 02238290 CN 02238290 U CN02238290 U CN 02238290U CN 2534356 Y CN2534356 Y CN 2534356Y
- Authority
- CN
- China
- Prior art keywords
- centralizer
- sucker rod
- positive cover
- supporting positive
- 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.)
- Expired - Lifetime
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Abstract
A sucker rod hoop connection type centralizer relates to a centralizing device for oil field sucker rod which consists of a centralizer connection hoop (1), a centralizing sleeve (2) with a cog (3) at the outer surface. A through hole (4) with internal thread is provided in the centralizer connection hoop (1). The centralizing sleeve (2) is out of the centralizer connection hoop (1). The sucker rod hoop connection type centralizer of the utility model is applicable for inclined well and well with serious bias wear, which has a simple structure, an esay processing technology, a low production cost, a tight and firm screw, an esay installing, a uniform wear, and a long service life.
Description
Technical field: the utility model relates to the erection device on the sucker rod of a kind of oil field.
Background technology: when oil-field oil pumper carried out work, sucker rod moved up and down in oil pipe, so sucker rod and tube inner wall friction, collision even fracture very easily take place.Existing centralizer exists processing technology complexity, shortcoming that cost of production is high; Existing centralizer is that the joint by body of rod upper and lower side is connected with sucker rod, therefore makes the centralizer axial dimension long, and intensity reduces.
Summary of the invention: the utility model provides a kind of join hoop type centralizer of sucker rod, and this centralizer has overcome complex process that existing centralizer exists, cost of production height, problem that intensity is low.The utility model is made up of the supporting positive cover 2 that centralizer box cupling 1, external surface have fin 3, and centralizer box cupling 1 is inner for having the through hole 4 of internal thread, and supporting positive cover 2 is enclosed within the outside of centralizer box cupling 1.During use, the internal thread by through hole 4 is connected centralizer box cupling 1 between two sucker rods, because fin 3 carries out work near oil pipe, institute is so that sucker rod and short circuit difficult drop-off.The utility model is suitable for inclined shaft and the more serious well of eccentric wear, have simple in structure, processing technology is simple, cost of production is low, screw firmly, simple installation, wearing and tearing evenly, the advantage of long service life.This centralizer plays to be set upright and the effect of stable sucker rod, provides certain feasibility for deviated directional drilling adopts conventional sucker rod oil pumping, has avoided side-abrasion of rod string to greatest extent.This centralizer is through axially applying the load test more than the 250KN, and test back centralizer does not rupture.The supporting positive cover 2 of this centralizer adopts the enhancement type nanometer polyamide 6 composite material to make, and has performances such as friction factor is little, self lubricity good, intensity is high, shock-resistant, high temperature resistant, and its abrasion resistance is 7 times of steel.
Description of drawings: Fig. 1 is the structural representation of the specific embodiment one, and Fig. 2 is the A-A sectional view of Fig. 1, and Fig. 3 is the structural representation of the specific embodiment two, and Fig. 4 is the structural representation of the specific embodiment three, and Fig. 5 is the sectional view of the specific embodiment three.
The specific embodiment one: present embodiment is made up of centralizer box cupling 1, supporting positive cover 2, and there is tapped through hole 4 centralizer box cupling 1 inside.The convex platform 5-1 and the lower convex platform 5-2 of annular are arranged at the two ends up and down of centralizer box cupling 1 external surface, and supporting positive cover 2 is enclosed between convex platform 5-1 and the lower convex platform 5-2.External surface at supporting positive cover 2 has four fins 3, and fin 3 is the straightedges that parallel with the axis of supporting positive cover 2.
The specific embodiment two: what present embodiment and the specific embodiment one were different is: the lower convex platform 5-2 of annular is only arranged in the lower end of centralizer box cupling 1 external surface, be with supporting positive cover 2 between sucker rod 6 that links to each other with centralizer box cupling 1 and lower convex platform 5-2.This structure is convenient to change the supporting positive cover 2 of wearing and tearing, improves the application life of centralizer box cupling 1.Other composition is identical with the specific embodiment one with annexation.
The specific embodiment three: what present embodiment and the specific embodiment one, two were different is that fin 3 is helical rib, its pitch angle alpha will≤20 °.The length m of supporting positive cover 2 is less than the length n of the axle journal 1-1 that matches with supporting positive cover 2, and the inside diameter D of supporting positive cover 2 is less than the inner diameter d of axle journal 1-1.The supporting positive cover 2 of said structure is rotation on centralizer box cupling 1 under the drive of oil stream, and scraping is deposited on the paraffin on the tubing wall effectively, stops the wax crystalline substance to be grown up, and reduces oil flow resistance, reaches the purpose of wax control clearly.Other composition is identical with the specific embodiment one, two with annexation.
Claims (6)
1, join hoop type centralizer of sucker rod, it is made up of the supporting positive cover (2) that centralizer box cupling (1), external surface have fin (3), it is characterized in that centralizer box cupling (1) is inner for having the through hole (4) of internal thread, supporting positive cover (2) is enclosed within the outside of centralizer box cupling (1).
2, join hoop type centralizer of sucker rod according to claim 1, it is characterized in that having at the two ends up and down of centralizer box cupling (1) external surface the convex platform (5-1) and the lower convex platform (5-2) of annular, supporting positive cover (2) is enclosed between convex platform (5-1) and the lower convex platform (5-2).
3, join hoop type centralizer of sucker rod according to claim 1, it is characterized in that having the lower convex platform (5-2) of annular, between sucker rod (6) that links to each other with centralizer box cupling (1) and lower convex platform (5-2), be with supporting positive cover (2) in the lower end of centralizer box cupling (1) external surface.
4,, it is characterized in that fin (3) is the straightedge that parallels with the axis of supporting positive cover (2) according to claim 1,2 or 3 described join hoop type centralizer of sucker rod.
5,, it is characterized in that fin (3) for helical rib, its pitch angle alpha will≤20 ° according to claim 1,2 or 3 described join hoop type centralizer of sucker rod.
6, according to claim 1,2 or 3 described join hoop type centralizer of sucker rod, it is characterized in that the length n of the length m of supporting positive cover (2) less than the axle journal (1-1) that matches with supporting positive cover (2), the inside diameter D of supporting positive cover (2) is less than the inner diameter d of axle journal (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02238290 CN2534356Y (en) | 2002-06-28 | 2002-06-28 | Sucker pole coupling centralizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02238290 CN2534356Y (en) | 2002-06-28 | 2002-06-28 | Sucker pole coupling centralizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2534356Y true CN2534356Y (en) | 2003-02-05 |
Family
ID=33712023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02238290 Expired - Lifetime CN2534356Y (en) | 2002-06-28 | 2002-06-28 | Sucker pole coupling centralizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2534356Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775964B (en) * | 2010-01-27 | 2013-01-30 | 中国石油大学(华东) | Auto-rotation centralizer with dynamic pressure lubricating effect |
| CN104727758A (en) * | 2013-12-20 | 2015-06-24 | 盐城市华谊石油机械有限公司 | Nano-metal centralizer |
-
2002
- 2002-06-28 CN CN 02238290 patent/CN2534356Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101775964B (en) * | 2010-01-27 | 2013-01-30 | 中国石油大学(华东) | Auto-rotation centralizer with dynamic pressure lubricating effect |
| CN104727758A (en) * | 2013-12-20 | 2015-06-24 | 盐城市华谊石油机械有限公司 | Nano-metal centralizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20060607 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |