CN201666126U - Antifriction ball-bearing casing protecting device - Google Patents
Antifriction ball-bearing casing protecting device Download PDFInfo
- Publication number
- CN201666126U CN201666126U CN2010201263552U CN201020126355U CN201666126U CN 201666126 U CN201666126 U CN 201666126U CN 2010201263552 U CN2010201263552 U CN 2010201263552U CN 201020126355 U CN201020126355 U CN 201020126355U CN 201666126 U CN201666126 U CN 201666126U
- Authority
- CN
- China
- Prior art keywords
- ball bearing
- well workover
- ball
- central tube
- production casing
- 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 provides an antifriction ball-bearing casing protecting device, which belongs to a production device for an oil filed, and comprises a central tube, wherein a ball bearing bushing is arranged at the outer side of the central tube, and the inner side of a ball bearing arranged on the ball bearing bushing can be contacted with the outer wall of the central tube; and the outer side of the ball bearing is projected out of the outer wall of the ball bearing bushing, and the two ends of the central tube are respectively provided with an upper joint and a lower joint with threads. When in use, the protecting device can be arranged between well workover pipe strings, and in the well workover operation, the ball bearing is contacted with the inner wall of a production casing to form a pivot, so that the well workover pipe strings are not contacted with the production casing, and the sliding friction between the well workover pipe strings and the production casing is changed into the rolling friction between the production casing and the ball bearing, thereby reducing friction loss and improving the rotary torque force transferring effect of the well workover pipe strings, and protecting the production casing. The protecting device has particularly obvious effect in the construction operation of movable unfreezing well workover.
Description
Technical field
The utility model 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 in the utility model 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 utility model is to realize 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 the utility model structure.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing further specifies concrete structure of the present utility model.
As shown in drawings; the ball anti-attrition casing protection device of the utility model; 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 protective device of the utility model 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 |
|---|---|---|---|
| CN2010201263552U CN201666126U (en) | 2010-02-03 | 2010-02-03 | Antifriction ball-bearing casing protecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201263552U CN201666126U (en) | 2010-02-03 | 2010-02-03 | Antifriction ball-bearing casing protecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201666126U true CN201666126U (en) | 2010-12-08 |
Family
ID=43267085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201263552U Expired - Fee Related CN201666126U (en) | 2010-02-03 | 2010-02-03 | Antifriction ball-bearing casing protecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201666126U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909189A (en) * | 2016-06-13 | 2016-08-31 | 西安石油大学 | Anti-abrasion device for casing pipe |
| US10920502B2 (en) | 2018-02-05 | 2021-02-16 | Saudi Arabian Oil Company | Casing friction reduction methods and tool |
| US11448016B2 (en) | 2018-02-05 | 2022-09-20 | Saudi Arabian Oil Company | Casing friction reduction methods and tool |
-
2010
- 2010-02-03 CN CN2010201263552U patent/CN201666126U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105909189A (en) * | 2016-06-13 | 2016-08-31 | 西安石油大学 | Anti-abrasion device for casing pipe |
| US10920502B2 (en) | 2018-02-05 | 2021-02-16 | Saudi Arabian Oil Company | Casing friction reduction methods and tool |
| US11448016B2 (en) | 2018-02-05 | 2022-09-20 | Saudi Arabian Oil Company | Casing friction reduction methods and tool |
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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: 20101208 Termination date: 20110203 |