CN2881065Y - Metal centering guide of screw pump oil extraction rod - Google Patents
Metal centering guide of screw pump oil extraction rod Download PDFInfo
- Publication number
- CN2881065Y CN2881065Y CN 200520087597 CN200520087597U CN2881065Y CN 2881065 Y CN2881065 Y CN 2881065Y CN 200520087597 CN200520087597 CN 200520087597 CN 200520087597 U CN200520087597 U CN 200520087597U CN 2881065 Y CN2881065 Y CN 2881065Y
- Authority
- CN
- China
- Prior art keywords
- righting
- rod
- sleeve
- wear
- screw pump
- 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
The utility model relates to a screw pump sucker rod metal centering guide, which comprises a righting rod and a righting sleeve, wherein the righting sleeve is equipped on the righting rod, the righting rod and righting sleeve can rotate relatively, the two ends of the righting rod have threads, the righting sleeve is a hollow body, the external part is a cylinder, the external surface of the righting rod is hot sprayed with a wear-resistant layer and the external surface of the righting sleeve is also hot sprayed with a wear-resistant layer. The internal surface of the righting sleeve is provided with a wear-resistant metal clad layer. The hot spray wear-resistant layer on the external surface of the righting rod and righting sleeve is the alloy powder, such as nickel base alloy powder. The righting rod can be a hollow body. The screw pump sucker rod metal centering guide is linked between the sucker rods. As the external surface of the righting rod and righting sleeve and the internal surface of the righting sleeve have hot spray wear-resistant layer and wear-resistant metal clad layer and polishing processing is conducted, the surface smooth finish and hardness are high, the friction coefficient is low and the abrasion is alleviated, which can lengthen the service life of the oil pipe and the sucker rod, increase the production cycle of the oilwell and reduce the well repair expense.
Description
One, technical field
The utility model is the equipment that oil field pumping well is used, and is a kind of screw pump sucker rod metal centralizer, belongs to engineering goods.
Two, background technology
In the oil well of producing with screw pump, sucker rod is lowered in the oil pipe, and sucker rod rotates the rotation of drive screw pump in oil pipe, thereby crude oil is adopted to ground.Sucker rod produces relative rotary motion with oil pipe in rotary course, must exist mutual wear problem.In order to prevent the wearing and tearing between the sucker rod and oil pipe in the screw pump oil production well, many abrasionproof measures have been taked at the scene, wherein a kind of is between the connection sucker rod centralizer to be installed, but the supporting positive cover of the centralizer that uses generally is nonmetal at present, wear no resistance, work hardly to preventing wearing and tearing, as adopt metal material can damage oil pipe again, so, adopt the well sucker rod and the wearing and tearing between the oil pipe of screw pump oil production to can not get solving, cause sucker rod, oil pipe weak point in application life, the oil well production cycle is short, and workover cost is many.
Three, summary of the invention
The purpose of this utility model provides a kind of screw pump sucker rod metal centralizer, improves the reliability of screw pump oil production system, increases the oil well production cycle, reduces workover cost.
The purpose of this utility model is achieved in that by righting rod, supporting positive cover to be formed, supporting positive cover is installed on the righting rod, righting rod, supporting positive cover can rotate relatively, there is screw thread at the righting rod two ends, supporting positive cover is a hollow body, the outside is a cylinder, righting rod outer surface heat spraying abrasion-proof layer, supporting positive cover outer surface heat spraying abrasion-proof layer.Supporting positive cover outer surface heat spraying abrasion-proof layer.The supporting positive cover inner surface has antifriction metal (AFM) coating.Righting rod, supporting positive cover outer surface heat spraying abrasion-proof layer are alloy powder, as nickel-base alloy powder.Righting rod is solid or hollow body.
The beneficial effects of the utility model are: screw pump sucker rod metal centralizer is connected between the sucker rod, because righting rod supporting positive cover external surface, the supporting positive cover inner surface has hot spraying wearing layer and the coating of anti-the antifriction metal (AFM), and polishes processing, makes its finish height, the hardness height, friction factor is low, and wearing and tearing alleviate, and can prolong oil pipe, sucker rod application life simultaneously, increase the oil well production cycle, reduce workover cost.
Four, description of drawings
Fig. 1 is first kind of embodiment half sectional view of the utility model.
Fig. 2 is second kind of embodiment half sectional view of the utility model.
Five, the specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
Be made up of righting rod 1, supporting positive cover 2, supporting positive cover 2 is installed on the righting rod 1, and righting rod 1, supporting positive cover 2 can rotate relatively, and there is screw thread at righting rod 1 two ends, and supporting positive cover 2 is a hollow body, and supporting positive cover 2 outsides are cylinder, righting rod 1 outer surface heat spraying abrasion-proof layer 3.Supporting positive cover 2 outer surface heat spraying abrasion-proof layers 5.Supporting positive cover 2 inner surfaces have antifriction metal (AFM) coating 4, and as chromium plating, chromium coating thickness is greater than 0.1mm, and hardness is higher than HRC 50.Righting rod 1, supporting positive cover 2 outer surface heat spraying abrasion-proof layers are alloy powder, and as nickel-base alloy powder, jetting thickness is greater than 0.25mm, and hardness is higher than HRC50, and is wear-resisting, corrosion-resistant.Processing is polished on the anti-scuff-resistant coating of hot spraying wearing layer and metal surface, and surface roughness is lower than 0.0004mm, and the friction factor of itself and oil pipe is reduced to below 0.01, and except that self was wear-resisting, the oil pipe that also can not wear and tear had played the effect of bidirectional protective.
Among the another kind of embodiment of the present utility model righting rod 1 is designed to hollow body, is used for the screw pump oil production well that hollow rod drives, make it inside and outsidely can carry fluid respectively, also can be lowered to heating cable in inside.
Claims (4)
1, a kind of screw pump sucker rod metal centralizer, it is characterized in that: form by righting rod (1), supporting positive cover (2), supporting positive cover (2) is installed on the righting rod (1), there is screw thread at righting rod (1) two ends, supporting positive cover (2) is a hollow body, supporting positive cover (2) outside is a cylinder, righting rod (1) outer surface heat spraying abrasion-proof layer (3).
2, screw pump sucker rod metal centralizer according to claim 1 is characterized in that: supporting positive cover (2) outer surface heat spraying abrasion-proof layer (5).
3, screw pump sucker rod metal centralizer according to claim 1, it is characterized in that: supporting positive cover (2) inner surface has antifriction metal (AFM) coating (4).
4, screw pump sucker rod metal centralizer according to claim 1, it is characterized in that: righting rod (1) is solid or hollow body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520087597 CN2881065Y (en) | 2005-09-26 | 2005-09-26 | Metal centering guide of screw pump oil extraction rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520087597 CN2881065Y (en) | 2005-09-26 | 2005-09-26 | Metal centering guide of screw pump oil extraction rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881065Y true CN2881065Y (en) | 2007-03-21 |
Family
ID=37880905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520087597 Expired - Fee Related CN2881065Y (en) | 2005-09-26 | 2005-09-26 | Metal centering guide of screw pump oil extraction rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881065Y (en) |
Cited By (3)
| 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 |
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
| EP2539535A4 (en) * | 2010-02-22 | 2018-08-29 | Exxonmobil Upstream Research Company | Coated sleeved oil and gas well production devices |
-
2005
- 2005-09-26 CN CN 200520087597 patent/CN2881065Y/en not_active Expired - Fee Related
Cited By (3)
| 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 |
| EP2539535A4 (en) * | 2010-02-22 | 2018-08-29 | Exxonmobil Upstream Research Company | Coated sleeved oil and gas well production devices |
| CN104074475A (en) * | 2013-03-25 | 2014-10-01 | 中国石油化工股份有限公司 | Sucker rod centralizer for full metal screw pump lifting |
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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 |