CN202767931U - Hydraulic back-off salvage device of down hole - Google Patents
Hydraulic back-off salvage device of down hole Download PDFInfo
- Publication number
- CN202767931U CN202767931U CN 201220485941 CN201220485941U CN202767931U CN 202767931 U CN202767931 U CN 202767931U CN 201220485941 CN201220485941 CN 201220485941 CN 201220485941 U CN201220485941 U CN 201220485941U CN 202767931 U CN202767931 U CN 202767931U
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- China
- Prior art keywords
- centralizer
- salvage
- down hole
- shaft assembly
- spear
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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
A hydraulic back-off salvage device of a down hole is composed of a positive-displacement hydraulic motor (1), a driving shaft assembly (2), an anti-reversing anchor tile centralizer (3), a hollow reducer (4), a no load starting compensator (5) and a retreating type back-off oil pipe salvage spear (6). The hydraulic back-off salvage device of the down hole is characterized in that the positive displacement hydraulic motor (1), the driving shaft assembly (2), the anti-reversing anchor tile centralizer (3), the hollow reducer (4), the no load starting compensator (5) and the retreating type back-off oil pipe salvage spear (6) are sequentially connected by silk buckles from top to bottom. By means of the hydraulic back-off salvage device of the down hole, dropping objects in the down hole can be in the hydraulic back-off salvage.
Description
Affiliated technical field
The utility model relates to a kind of underground hydraulic pressure back-off fishing device on the oilfield, this device has positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5], reversible back-off tubing spear [6] to form, and uses this device to carry out hydraulic pressure back-off to trouble of lost tool in hole and salvages.
Background technology
At present, known technology is in the salvaging process of oil well junk, does not have the underground hydraulic pressure back-off fishing device, the salvaging process more complicated of trouble of lost tool in hole, and production brings very large loss to oil well.
Summary of the invention
In order to overcome the deficiencies in the prior art, the utility model provides a kind of underground hydraulic pressure back-off fishing device, uses this device to carry out hydraulic pressure back-off to trouble of lost tool in hole and salvages.
The technical scheme that its technical problem that solves the utility model adopts is: adopt a kind of underground hydraulic pressure back-off fishing device, this device has positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5], reversible back-off tubing spear [6] forms, it is characterized in that: positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5] and reversible back-off tubing spear [6] are used screwed connection from top to bottom successively in order, and the effect of positive displacement hydraulic motor [1] provides hydraulic pressure back-off moment; The effect of driving-shaft assembly [2] is that back-off moment is passed to hollow reduction gear [4], the effect of hollow reduction gear [4] is that back-off moment is passed to reversible back-off tubing spear [6], and the effect of reversible back-off tubing spear [6] is trouble of lost tool in hole to be carried out hydraulic pressure back-off salvage; The effect of anti-reverse anchor watt centralizer [3] is the fixing tubing string on centralizer top, prevent the tubing string counter-rotating of centralizer top, the effect of No Load Start expansion bend [5] is to assist reversible back-off tubing spear [6] to do longitudinal extension, uses this device to carry out hydraulic pressure back-off to trouble of lost tool in hole and salvages.
The beneficial effects of the utility model: by field trial, the utility model compared with prior art uses this device to carry out hydraulic pressure back-off to trouble of lost tool in hole and salvages.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified:
Fig. 1 is the schematic diagram of a kind of structure embodiment of underground hydraulic pressure back-off fishing device.
Among the figure: 1. positive displacement hydraulic motor, 2. driving-shaft assembly, 3. anti-reverse anchor watt centralizer, 4. hollow reduction gear, 5. No Load Start expansion bend, 6. reversible back-off tubing spear.
The specific embodiment
In the accompanying drawings, the underground hydraulic pressure back-off fishing device, this device has positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5], reversible back-off tubing spear [6] forms, it is characterized in that: positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5] and reversible back-off tubing spear [6] are used screwed connection from top to bottom successively in order, and the effect of positive displacement hydraulic motor [1] provides hydraulic pressure back-off moment; The effect of driving-shaft assembly [2] is that back-off moment is passed to hollow reduction gear [4], the effect of hollow reduction gear [4] is that back-off moment is passed to reversible back-off tubing spear [6], and the effect of reversible back-off tubing spear [6] is trouble of lost tool in hole to be carried out hydraulic pressure back-off salvage; The effect of anti-reverse anchor watt centralizer [3] is the fixing tubing string on centralizer top, prevent the tubing string counter-rotating of centralizer top, the effect of No Load Start expansion bend [5] is to assist reversible back-off tubing spear [6] to do longitudinal extension, uses this device to carry out hydraulic pressure back-off to trouble of lost tool in hole and salvages.
Claims (1)
1. underground hydraulic pressure back-off fishing device, this device has positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5], reversible back-off tubing spear [6] to form, and it is characterized in that: positive displacement hydraulic motor [1], driving-shaft assembly [2], anti-reverse anchor watt centralizer [3], hollow reduction gear [4], No Load Start expansion bend [5] and reversible back-off tubing spear [6] are used screwed connection from top to bottom successively in order.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485941 CN202767931U (en) | 2012-09-23 | 2012-09-23 | Hydraulic back-off salvage device of down hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220485941 CN202767931U (en) | 2012-09-23 | 2012-09-23 | Hydraulic back-off salvage device of down hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202767931U true CN202767931U (en) | 2013-03-06 |
Family
ID=47774514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220485941 Expired - Fee Related CN202767931U (en) | 2012-09-23 | 2012-09-23 | Hydraulic back-off salvage device of down hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202767931U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339077A (en) * | 2017-03-30 | 2017-11-10 | 中国石油天然气股份有限公司 | Underground fishing tool and application method based on controlled in wireless |
| CN111810073A (en) * | 2020-07-13 | 2020-10-23 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
| 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 |
-
2012
- 2012-09-23 CN CN 201220485941 patent/CN202767931U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107339077A (en) * | 2017-03-30 | 2017-11-10 | 中国石油天然气股份有限公司 | Underground fishing tool and application method based on controlled in wireless |
| CN107339077B (en) * | 2017-03-30 | 2019-06-11 | 中国石油天然气股份有限公司 | Underground fishing tool and application method based on wireless control |
| 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 |
| CN111810073A (en) * | 2020-07-13 | 2020-10-23 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
| CN111810073B (en) * | 2020-07-13 | 2022-07-08 | 中国石油天然气集团有限公司 | Fishing device, control method and device, electronic equipment and storage medium |
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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: 20130306 Termination date: 20130923 |