CN201041005Y - Anti-grinding pair of hollow pumping rod - Google Patents
Anti-grinding pair of hollow pumping rod Download PDFInfo
- Publication number
- CN201041005Y CN201041005Y CNU2007200228333U CN200720022833U CN201041005Y CN 201041005 Y CN201041005 Y CN 201041005Y CN U2007200228333 U CNU2007200228333 U CN U2007200228333U CN 200720022833 U CN200720022833 U CN 200720022833U CN 201041005 Y CN201041005 Y CN 201041005Y
- Authority
- CN
- China
- Prior art keywords
- rod
- hollow
- wear
- rod body
- oil 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
A hollow sucker rod antiwear pair is composed of an upper joint, a rod body, a righting sleeve and a lower joint, wherein the upper joint, the rod body, the lower joint are connected in order, the righting sleeve is sleeved on the rod body. The upper joint, the rod body and the lower joint are all hollow. The righting sleeve is made of metal material whose hardness is lower than the oil pipe. Because the righting sleeve doesn't move when sucking oil, the righting sleeve doesn't wear the rude inner surface of the oil pipe due to attrition, and because the surfaces of the rod body and the inner surface of the righting sleeve are smooth, although relative slide exists between the rod body and the inner surface of the righting sleeve, wearing can not be easily casued, thus the hollow sucker rod antiwear pair can not only ensure that the oil pipe and the sucker rod don't wear, but also ensure a higher service life.
Description
One, technical field
The utility model relates to the oil production equipment of petroleum industry, the wear-resistant pair of particularly a kind of hollow rod.
Two, background technology
In sucker-rod pumping system, no matter be straight well or inclined shaft, R a T all is relative motion in contact, therefore, exist inevitable wearing and tearing between sucker rod and the oil pipe, particularly deep-well and inclined shaft, sucker rod is easy to bending in oil pipe, the problem of serious sucker rod partial wear oil pipe occurs, in order to solve the eccentric wear problem, worked out some technical methods and measure, but these technical measures all are to be applied on the solid sucker rod, also do not have suitable prevent mill technology and measure on the hollow rod, cause the oil well of hollow rod production wearing and tearing to occur producing between hollow rod and the oil pipe, after producing wearing and tearing oil pipe and hollow rod can not be used, cause the oil well operation, oil well repair free period is short, increase operating cost, increase rod tube consumption, the oil well off-time is many, has reduced crude output.
Three, summary of the invention
The purpose of this utility model is a kind of long service life of design, and the wear-resistant pair of hollow rod of the oil pipe that do not wear and tear again avoids hollow rod the problem of hollow rod, oil pipe eccentric wear to occur in the bending of oil pipe internal cause, inclination.
The purpose of this utility model is achieved in that by top connection, the body of rod, lower contact to be formed, and top connection, the body of rod, lower contact connect successively, and supporting positive cover is sleeved on the body of rod.Top connection, the body of rod, lower contact are hollow body.Supporting positive cover adopts hardness to be lower than the metal material of oil pipe hardness.
The beneficial effects of the utility model are: supporting positive cover does not move during owing to oil pumping, supporting positive cover can not rub on more coarse pipe inner surface and wear and tear, very smooth by body of rod surface and supporting positive cover inner surface again, though relative slip is arranged between them, also be not easy wearing and tearing, therefore, the wear-resistant pair of this hollow rod can guarantee that oil pipe, sucker rod do not wear and tear, and can also guarantee to have higher application life.
Four, description of drawings
Accompanying drawing is the wear-resistant secondary assembling drawing of the utility model hollow rod.
Five, the specific embodiment
As shown in the figure, be made up of top connection (1), the body of rod (2), supporting positive cover 3, lower contact (4), top connection (1), the body of rod (2), lower contact (4) connect successively, and supporting positive cover (3) is sleeved on the body of rod (2).Top connection (1), the body of rod (2), lower contact (4) are hollow body, make it inside and outsidely can carry fluid respectively, also can be lowered to heating cable in inside.Supporting positive cover (3) adopts hardness to be lower than the metal material of oil pipe hardness, as copper etc.
Claims (3)
1. the wear-resistant pair of hollow rod is made up of top connection (1), the body of rod (2), lower contact (4), it is characterized in that: top connection (1), the body of rod (2), lower contact (4) connect successively, and supporting positive cover (3) is sleeved on the body of rod (2).
2. the wear-resistant pair of hollow rod according to claim 1 is characterized in that: top connection (1), the body of rod (2), lower contact (4) are hollow body.
3. the wear-resistant pair of hollow rod according to claim 1 is characterized in that: supporting positive cover (3) adopts hardness to be lower than the metal material of oil pipe hardness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228333U CN201041005Y (en) | 2007-05-29 | 2007-05-29 | Anti-grinding pair of hollow pumping rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200228333U CN201041005Y (en) | 2007-05-29 | 2007-05-29 | Anti-grinding pair of hollow pumping rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201041005Y true CN201041005Y (en) | 2008-03-26 |
Family
ID=39252711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200228333U Expired - Fee Related CN201041005Y (en) | 2007-05-29 | 2007-05-29 | Anti-grinding pair of hollow pumping rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201041005Y (en) |
-
2007
- 2007-05-29 CN CNU2007200228333U patent/CN201041005Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |