CN201103361Y - Salvaging device for down-hole remaining rubber - Google Patents
Salvaging device for down-hole remaining rubber Download PDFInfo
- Publication number
- CN201103361Y CN201103361Y CNU2007200917463U CN200720091746U CN201103361Y CN 201103361 Y CN201103361 Y CN 201103361Y CN U2007200917463 U CNU2007200917463 U CN U2007200917463U CN 200720091746 U CN200720091746 U CN 200720091746U CN 201103361 Y CN201103361 Y CN 201103361Y
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- Prior art keywords
- tooth
- hole
- hook teeth
- rows
- fishing
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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.)
- Expired - Fee Related
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Abstract
The utility model relates to a fisher for down-hole residue rubber sheet, which belongs to the technical field of a fishing tool for fishing down-hole residue rubber objects of breaking packer in oil well repair operation and is composed of an upper joint and an overshot body. A claw tooth 3 is arranged at the lower end of the overshot body; three rows of inner hook teeth are welded on the inner wall of the claw tooth, and can be divided into long hook teeth, medium hook teeth and short hook teeth according to the length. As the down-hole junk is hooked by the three rows of inner hook teeth on the claw tooth at the lower end of the overshot body, the success rate of fishing can be improved, the work period can be shortened and the operation cost can be reduced.
Description
Technical field: the utility model relates to the remaining rubber fisher in a kind of down-hole, belongs to the fishing tool technical field that oil well repairing operation is salvaged the remaining broken packer rubber class junk in down-hole.
Background technology: when oilfield downhole operation, the broken rubber of packer is arranged, cause construction normally to carry out because of the shaft bottom is often remaining.In the prior art, one is to use pawl to salvage the broken rubber in down-hole, and one is made of pawl top connection and salvaging cylindrical shell, because of can't stopping junk, its blade tooth of salvaging the cylindrical shell lower end under deadweight and circulation fluid impact, falls, be everlasting to press down and receive when embracing, junk not in cylindrical shell, causes and salvages failure; Two are to use junk mill to carry out milling, because of the shaft bottom is softer rubber, the milling weak effect, can only adopt the junk mill tubing string to pause repeatedly to pound, method such as flushing repeatedly, junk is gone out, caused the well workover construction period to prolong, operating cost increases severely, and the accident of the dead junk mill of hair fastener causes economic loss serious extremely easily.
Summary of the invention: the purpose of this utility model is to salvage or the low defective of the broken rubber success rate in milling down-hole in order to overcome in the prior art, and a kind of remaining rubber fisher in down-hole that can effectively salvage the broken rubber of shaft bottom under residual is provided.
The utility model is made up of top connection, salvaging cylindrical shell, and the lower end of salvaging cylindrical shell is a blade tooth 3, is welded with briar tooth in three rows on the blade tooth inwall, according to the length of briar tooth in three rows, can be divided into long briar tooth, middle briar tooth, weak point briar tooth.
Utilize the interior briar tooth hook of the row of three on the blade tooth of salvaging cylindrical shell of the present utility model lower end to live trouble of lost tool in hole, can improve fishing success ratio, the reduction of erection time, reduce operating cost.
Description of drawings: Fig. 1 is the utility model structural representation.
The specific embodiment: as can be known by accompanying drawing 1, the utility model is made up of top connection 1, salvaging cylindrical shell 2, and the lower end of salvaging cylindrical shell 2 is a blade tooth 3, is welded with briar tooth in three rows on blade tooth 3 inwalls, according to the length of briar tooth in three rows, can be divided into long briar tooth 4, middle briar tooth 5, short briar tooth 6.
When the utility model during down to the shaft bottom, softer flexible junk such as broken rubber, be squeezed and shrink and enter salvaging cylindrical shell 2, and stop by short briar tooth 6, middle briar tooth 5, long briar tooth 4 hooks respectively and prevent its whereabouts, transfer drill string pressurization and rotation, the blade tooth 3 of salvaging cylindrical shell 2 is curved inwardly close up and form the helical form profile of tooth and receive and embrace together by the drill string rotation direction, thereby will enter the junk receipts of salvaging cylindrical shell 2 embraces in salvaging cylindrical shell 2, the upper lifting pipe post can be salvaged trouble of lost tool in hole to pit shaft, prevent the generation of down-hole accident, ensure safety in production.
Claims (1)
1, the remaining rubber fisher in a kind of down-hole, form by top connection (1), salvaging cylindrical shell (2), the lower end of salvaging cylindrical shell (2) is blade tooth (3), it is characterized in that on blade tooth (3) inwall, being welded with briar tooth in three rows, according to the length of briar tooth in three rows, can be divided into long briar tooth (4), middle briar tooth (5), short briar tooth (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200917463U CN201103361Y (en) | 2007-08-31 | 2007-08-31 | Salvaging device for down-hole remaining rubber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200917463U CN201103361Y (en) | 2007-08-31 | 2007-08-31 | Salvaging device for down-hole remaining rubber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201103361Y true CN201103361Y (en) | 2008-08-20 |
Family
ID=39950386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200917463U Expired - Fee Related CN201103361Y (en) | 2007-08-31 | 2007-08-31 | Salvaging device for down-hole remaining rubber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201103361Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821473A (en) * | 2014-03-03 | 2014-05-28 | 中煤特殊凿井有限责任公司 | Hole bottom falling object fisher in drilling |
| CN106639948A (en) * | 2017-03-02 | 2017-05-10 | 河北恒安泰油管有限公司 | Salvaging tool |
| CN108386150A (en) * | 2018-04-17 | 2018-08-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of oil pipe rubber class litter latch jack and Refloatation method |
| CN112065326A (en) * | 2018-09-20 | 2020-12-11 | 山东天汇石油技术有限公司 | Downhole operation tool and method for petroleum industry |
-
2007
- 2007-08-31 CN CNU2007200917463U patent/CN201103361Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103821473A (en) * | 2014-03-03 | 2014-05-28 | 中煤特殊凿井有限责任公司 | Hole bottom falling object fisher in drilling |
| CN106639948A (en) * | 2017-03-02 | 2017-05-10 | 河北恒安泰油管有限公司 | Salvaging tool |
| CN108386150A (en) * | 2018-04-17 | 2018-08-10 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of oil pipe rubber class litter latch jack and Refloatation method |
| CN112065326A (en) * | 2018-09-20 | 2020-12-11 | 山东天汇石油技术有限公司 | Downhole operation tool and method for petroleum industry |
| CN112065326B (en) * | 2018-09-20 | 2022-08-26 | 东营大明石油工程科技开发有限责任公司 | Downhole operation tool and method for petroleum industry |
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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: 20080820 |