CN2611580Y - Self-locking reverse buckling salvage of sucker rod - Google Patents
Self-locking reverse buckling salvage of sucker rod Download PDFInfo
- Publication number
- CN2611580Y CN2611580Y CN 03218807 CN03218807U CN2611580Y CN 2611580 Y CN2611580 Y CN 2611580Y CN 03218807 CN03218807 CN 03218807 CN 03218807 U CN03218807 U CN 03218807U CN 2611580 Y CN2611580 Y CN 2611580Y
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- CN
- China
- Prior art keywords
- inner cone
- slips
- self
- sucker rod
- guide shoe
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Abstract
The utility model relates to a self-locking back-off pumping rod overshot, which is essentially applicable to non-retrusive instruments for salvaging on the outer wall of pump well in oil field workover operation and also for salvaging the junks with similar sizes to pumping rod. The utility model is composed of joints, a barrel body, an elastic mechanism, slips, an inner cone body, a guide shoe and keys, wherein the sleeve barrel is connected with joints, and the inside of the sleeve barrel is coated with the elastic mechanism and the slips, further the bottom of the sleeve barrel is connected with the inner cone body fixed with keys, additionally the bottom of the inner cone body is connected with the guide shoe, the bottom of which is of a left-hand spiral shape and is provided with an inclined chamfer angle along the left spiral line from inside to outside.
Description
Technical field: the utility model belongs to the oil field sucker rod socket, particularly about the upside down fastened sucker rod socket of a kind of self-locking, it mainly is applicable in the oil well repairing operation can not move back the formula instrument from what the pumpingh well outer wall was salvaged in sleeve pipe, also can salvage the junk to the similar size of sucker rod.
Background technology: original sucker rod socket adopts hinge type or fork type, and its shortcoming is to grab to be hampered as the down-hole after dragging for down junk, can only be with the sucker rod cutting-off, otherwise instrument can't withdraw from, to the life-span generation tremendous influence of equipment and tubing string.
Summary of the invention: the purpose of this utility model is: design the upside down fastened sucker rod socket of a kind of self-locking; it introduces performance to junk well can 3 grades of introducings; self-lock force is strong; junk is convenient to take out; when junk is met card in the down-hole; can implement back-off operation, instrument is taken out smoothly, better protection equipment and instrument.
The technical solution of the utility model is: design the upside down fastened sucker rod socket of a kind of self-locking, it is characterized in that: it is connected and composed by joint, cylindrical shell, elastic mechanism, slips, inner cone, guide shoe, key, be connected with joint on the sleeve, be with elastic mechanism and slips in the sleeve, the sleeve bottom is connected with inner cone, key is arranged on the inner cone, and the inner cone bottom is connected with guide shoe, and the bottom of guide shoe is the left-hand screw shape.
The chamfering that described guide shoe bottom tilts along left-hand screw line ecto-entad.
Described key is three equal parts and is fixed on uniformly on the inner cone, cylindrical cavity in the middle of the tapered cavity in the inner chamber two ends of inner cone, and the diameter of cylindrical cavity equals two ends conical cavity smaller diameter end.
Described elastic mechanism is spring and spring base, and the external surface of spring base and joint bottom is with spring, and the bottom of spring base is pressed with slips, and the slips Lower Half is enclosed within the epicone cavity of inner cone.
Described slips is three equal parts and distributes, and the slips that three equal parts distribute is with to be the key that three equal parts evenly are fixed on the inner cone corresponding one by one.
Described guide shoe is a cavity body, and inner chamber is cylindrical, and intracavity diameter equals the outside diameter of inner cone lower end conical cavity, and is communicated with it.
Characteristics of the present invention are: 1, junk is introduced conveniently, because its adopts three grades of introducings, the i.e. lower cone hole of the endoporus of guide shoe, inner cone and straight hole.
2, when junk is met card in the down-hole, back-off operation be can implement, better protection equipment and instrument instrument taken out smoothly.Be welded with three keys owing to equidistantly evenly distribute at the inner cone circumference, slips can only slide up and down in inner cone, but can not rotate, and behind the moving sucker rod of slips card and other junk, as the tubing string that can turn left that is hampered, takes out after holding the junk back-off.
Below in conjunction with the embodiment accompanying drawing the utility model is described further.
Description of drawings: Fig. 1 is the example structure schematic diagram.
Among the figure: 1, joint; 2, cylindrical shell; 3, spring; 4, spring base; 5, slips; 6, inner cone; 7, guide shoe; 8, key.
The specific embodiment:
Example structure is as shown in Figure 1: be connected with joint 1 on the sleeve 2, be with elastic mechanism and slips 5 in the sleeve 2, elastic mechanism is spring 3 and spring base 4, and the bottom of cylindrical shell 2 is threaded with inner cone 6 tops, the bottom of inner cone 6 is threaded with guide shoe 7, but screw thread needs left-handed connection.Be welded with three keys 8 on the inner cone 6, equally distributed by three slips 5 are arranged on the inner chamber conical surface of inner cone 6, slips 5 is three equal parts and distributes, and the slips 5 that three equal parts distribute is with to be the key 8 that three equal parts evenly are fixed on the inner cone 6 corresponding one by one.Slips 5 tops are pressed with spring base 4, and the external surface in spring base 4 and joint 1 bottom is with spring 3, and slips 5 Lower Halves are enclosed within the epicone cavity of inner cone 6.Guide shoe 7 is cavity body, the chamfering that guide shoe 7 bottoms tilt along left-hand screw line ecto-entad, and there is left-handed breach the bottom, cylindrical cavity in the middle of the tapered cavity in the inner chamber two ends of inner cone 6, the diameter of cylindrical cavity equals two ends conical cavity smaller diameter end.
The top of joint 1 is connected G.I.H and touches and be introduced into inner cone 6 inner chambers by guide shoe 7 behind the junk and enter in the self-locking slips 5 during use with tubing string, when slips 5 pressuring springs 3 are pushed up in the junk upper end, slips 5 internal diameters rise greatly to junk appearance and size, on when carrying instrument, spring 3 compressing slips 5 tighten, and conical surface reinforcement firmly blocks junk, during as the need back-off, three keys 8 on the cylindrical shell 2 drive slips 5 and carry out back-off operation.On observe the list index reading when carrying instrument, as greater than suspending weight, illustrate to drag for and obtains, as the need back-off operation, must mention back-off on the tubing string and load.
Claims (6)
1, the upside down fastened sucker rod socket of self-locking, it is characterized in that: it is connected and composed by joint, cylindrical shell, elastic mechanism, slips, inner cone, guide shoe, key, be connected with joint on the sleeve, be with elastic mechanism and slips in the sleeve, the sleeve bottom is connected with inner cone, be fixed with key on the inner cone, the inner cone bottom is connected with guide shoe, and the bottom of guide shoe is the left-hand screw shape.
2, the upside down fastened sucker rod socket of self-locking according to claim 1 is characterized in that: the chamfering that described guide shoe bottom tilts along left-hand screw line ecto-entad.
3, the upside down fastened sucker rod socket of self-locking according to claim 1, it is characterized in that: described key is three equal parts and is fixed on the inner cone uniformly, cylindrical cavity in the middle of the tapered cavity in the inner chamber two ends of inner cone, the diameter of cylindrical cavity equals two ends conical cavity smaller diameter end.
4, the upside down fastened sucker rod socket of self-locking according to claim 1, it is characterized in that: described elastic mechanism is spring and spring base, the external surface of spring base and joint bottom is with spring, and the bottom of spring base is pressed with slips, and the slips Lower Half is enclosed within the epicone cavity of inner cone.
5, the upside down fastened sucker rod socket of self-locking according to claim 1 is characterized in that: described slips is three equal parts and distributes, and the slips that three equal parts distribute is with to be the key that three equal parts evenly are fixed on the inner cone corresponding one by one.
6, the upside down fastened sucker rod socket of self-locking according to claim 1, it is characterized in that: described guide shoe is a cavity body, and inner chamber is net post shape, and the guide shoe intracavity diameter equals the outside diameter of inner cone lower end conical cavity, and is communicated with it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218807 CN2611580Y (en) | 2003-04-20 | 2003-04-20 | Self-locking reverse buckling salvage of sucker rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03218807 CN2611580Y (en) | 2003-04-20 | 2003-04-20 | Self-locking reverse buckling salvage of sucker rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2611580Y true CN2611580Y (en) | 2004-04-14 |
Family
ID=34161082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03218807 Expired - Fee Related CN2611580Y (en) | 2003-04-20 | 2003-04-20 | Self-locking reverse buckling salvage of sucker rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2611580Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102704883A (en) * | 2012-05-06 | 2012-10-03 | 山西晋城无烟煤矿业集团有限责任公司 | Special fishing device for downhole motor rotor of kilometer-level drilling machine |
| CN103228864A (en) * | 2010-11-22 | 2013-07-31 | 阿特拉斯·科普柯加拿大有限公司 | Fail safe locking overshot device |
| CN103775017A (en) * | 2012-11-28 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Fishing method for broken rod and side fishing device used in method |
| CN108035688A (en) * | 2018-01-03 | 2018-05-15 | 西南石油大学 | A kind of anti-rotation is sent into instrument |
| CN115263222A (en) * | 2022-09-29 | 2022-11-01 | 胜利油田东方实业投资集团有限责任公司 | Dual fixed anti-drop's a sucker rod overshot |
-
2003
- 2003-04-20 CN CN 03218807 patent/CN2611580Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103228864A (en) * | 2010-11-22 | 2013-07-31 | 阿特拉斯·科普柯加拿大有限公司 | Fail safe locking overshot device |
| CN103228864B (en) * | 2010-11-22 | 2016-06-29 | 阿特拉斯·科普柯加拿大有限公司 | The overshot device of failure safe locking-type |
| CN102704883A (en) * | 2012-05-06 | 2012-10-03 | 山西晋城无烟煤矿业集团有限责任公司 | Special fishing device for downhole motor rotor of kilometer-level drilling machine |
| CN103775017A (en) * | 2012-11-28 | 2014-05-07 | 贵州高峰石油机械股份有限公司 | Fishing method for broken rod and side fishing device used in method |
| CN103775017B (en) * | 2012-11-28 | 2016-04-13 | 贵州高峰石油机械股份有限公司 | Device is dragged in a kind of Refloatation method and side used of disconnected bar |
| CN108035688A (en) * | 2018-01-03 | 2018-05-15 | 西南石油大学 | A kind of anti-rotation is sent into instrument |
| CN115263222A (en) * | 2022-09-29 | 2022-11-01 | 胜利油田东方实业投资集团有限责任公司 | Dual fixed anti-drop's a sucker rod overshot |
| CN115263222B (en) * | 2022-09-29 | 2022-12-02 | 胜利油田东方实业投资集团有限责任公司 | Dual fixed anti-drop's a sucker rod socket |
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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 |