CN102140894A - Ball friction-reducing sleeve protective device - Google Patents
Ball friction-reducing sleeve protective device Download PDFInfo
- Publication number
- CN102140894A CN102140894A CN2010101191968A CN201010119196A CN102140894A CN 102140894 A CN102140894 A CN 102140894A CN 2010101191968 A CN2010101191968 A CN 2010101191968A CN 201010119196 A CN201010119196 A CN 201010119196A CN 102140894 A CN102140894 A CN 102140894A
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- CN
- China
- Prior art keywords
- ball
- sleeve
- workover
- protective device
- oil layer
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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.)
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Abstract
The invention provides a ball friction-reducing sleeve protective device, and belongs to a device for oil field production. The device comprises a central pipe, wherein a ball sleeve is arranged on the outer side of the central pipe; the inner side of a ball arranged on the ball sleeve can be contacted with the outer wall of the central pipe, and the outer side of the ball is protruded outside the outer wall of the ball sleeve; and the two ends of the central pipe are respectively provided with an upper joint and a lower joint with threads. The protective device can be arranged between workover pipe columns during use, and the ball is contacted with the inner wall of an oil layer sleeve to form a pivot during workover operation, so that the workover pipe columns are not contacted with the oil layer sleeve, and sliding friction between the workover pipe columns and the oil layer sleeve is changed into rolling friction between the oil layer sleeve and the ball; therefore, friction resistance loss is reduced, the effect of transmitting rotating torque of the workover pipe columns is enhanced, and the oil layer sleeve is protected. The protective device has a particularly obvious effect in movable releasing workover construction operation.
Description
Technical field
The invention provides a kind of field produces device, the protective device during especially a kind of workover treatment.
Background technology
In oil well repairing operation, because the centre-of gravity shift of well workover tubing string, can cause serious eccentric wear phenomenon occurring between interior well workover tubing string of horizontal well inclination section, increasing hole angle section and horizontal segment and production string, and between well workover tubing string and the production string pure sliding friction, caused excessive wear, shortened the application life of production string production string.
Summary of the invention
Technical problem to be solved by this invention is, a kind of ball anti-attrition casing protection device is provided, and the well workover tubing string is to the eccentric wear of production string when alleviating workover treatment.
The present invention realizes like this; ball anti-attrition casing protection device; it has central tube; there is the ball cover in the central tube outside; the ball inboard that ball puts installation can contact with the central tube outer wall, protrude in ball cover outer wall outside in the outside, and the central tube two ends are separately installed with threaded top connection and lower contact.
Adopt the ball anti-attrition casing protection device of said structure; can be installed between the well workover tubing string during use; during workover treatment; ball contacts with the inwall of production string and forms fulcrum, the well workover tubing string is not contacted, with the sliding friction between well workover tubing string and the production string with production string; become the rolling friction between production string and the ball; thereby reduced friction loss, improved the rotary torsion laser propagation effect of well workover tubing string, protected production string.This protective device effect in activity unfreezing well workover construction operation is especially obvious.
Description of drawings
Fig. 1 is the schematic diagram of structure of the present invention.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing further specifies concrete structure of the present invention.
As shown in drawings; the present invention's ball anti-attrition casing protection device; it has central tube 4; there is ball cover 3 in the central tube outside; ball 2 inboards that ball puts installation can contact with the central tube outer wall, protrude in ball cover outer wall outside in the outside, and the central tube two ends are separately installed with threaded top connection 1 and lower contact 5.
Obviously, corresponding to the position of ball ball hole is arranged at the ball cover, the shape of ball hole is corresponding with the shape of ball.
During use; the present invention's protective device is installed between the well workover tubing string by the screw thread in top connection, the lower contact; top connection is installed on the joint well workover tubing string, and lower contact is installed on next joint well workover tubing string, more whole well workover tubing string is lowered in the production string.Can determine the installation site of this protective device as required and quantity is installed.
Claims (1)
1. ball anti-attrition casing protection device; it is characterized in that; it has central tube (4); there is ball cover (3) in the central tube outside; ball (2) inboard that ball puts installation can contact with the central tube outer wall, protrude in ball cover outer wall outside in the outside, and the central tube two ends are separately installed with threaded top connection (1) and lower contact (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101191968A CN102140894A (en) | 2010-02-03 | 2010-02-03 | Ball friction-reducing sleeve protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101191968A CN102140894A (en) | 2010-02-03 | 2010-02-03 | Ball friction-reducing sleeve protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102140894A true CN102140894A (en) | 2011-08-03 |
Family
ID=44408660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101191968A Pending CN102140894A (en) | 2010-02-03 | 2010-02-03 | Ball friction-reducing sleeve protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102140894A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334704A (en) * | 2013-06-27 | 2013-10-02 | 济源市石油机械有限公司 | Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod |
| CN105134101A (en) * | 2015-08-21 | 2015-12-09 | 西南石油大学 | Deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device |
| CN108035685A (en) * | 2018-01-03 | 2018-05-15 | 西南石油大学 | A kind of ball antifriction pipe nipple |
-
2010
- 2010-02-03 CN CN2010101191968A patent/CN102140894A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103334704A (en) * | 2013-06-27 | 2013-10-02 | 济源市石油机械有限公司 | Rolling type eccentric wear preventing coupling capable of realizing rotation and revolution for sucker rod |
| CN103334704B (en) * | 2013-06-27 | 2015-12-09 | 济源市石油机械有限公司 | Can rotation can to revolve round the sun tumbling-type Anti-eccentric wear coupling of sucker rod |
| CN105134101A (en) * | 2015-08-21 | 2015-12-09 | 西南石油大学 | Deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device |
| CN105134101B (en) * | 2015-08-21 | 2017-05-24 | 西南石油大学 | Deepwater drilling riser and drill pipe anti-abrasion anti-attrition protection device |
| CN108035685A (en) * | 2018-01-03 | 2018-05-15 | 西南石油大学 | A kind of ball antifriction pipe nipple |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110803 |