CN201786304U - Fishing tool for back-off packer - Google Patents
Fishing tool for back-off packer Download PDFInfo
- Publication number
- CN201786304U CN201786304U CN2010205492601U CN201020549260U CN201786304U CN 201786304 U CN201786304 U CN 201786304U CN 2010205492601 U CN2010205492601 U CN 2010205492601U CN 201020549260 U CN201020549260 U CN 201020549260U CN 201786304 U CN201786304 U CN 201786304U
- Authority
- CN
- China
- Prior art keywords
- packer
- fishing
- bailer grab
- fishing claw
- conical surface
- 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 a fishing tool for the back-off packer, which comprises a joint, a cylinder body, and a fishing claw. The joint is threadedly connected with the upper portion of the cylinder body, the fishing claw is mounted inside the cylinder body. An outer cone surface is provided on the lower portion of the fishing claw. Strips are formed by milling the lower portion of the fishing claw, which can expand after contact with the back-off packer. The fish top of the back-off packer can be lead into the fishing claw. The fishing claw returns to the original shape after leading the fish top of the back-off packer into the fishing claw. The thread on the lower portion inside the fishing claw is engaged with the thread on the fish top of the back-off packer, so that the back-off packet can be taken out after connection. Therefore, the utility model can take the back-off packer outer through downward and upward moving, has simple operation, high success rate of fishing, and evident economic effect.
Description
Technical field
The utility model is the marine salvage equipment that the oil field well workover is used, and is a kind of back-off packer fishing tool.
Background technology
Back-off packer is a kind of instrument of separating oil reservoir, and the seal on back-off packer damages, and when maybe needing to change layer production, just back-off packer need be salvaged from the oil well depths.The way of salvaging at present back-off packer generally is to connect at thread making on the top of fish of back-off packer to pull out after being integral, and this way workload is big, and operating technology requires high, and therefore, fishing success ratio is low, can not satisfy on-the-spot needs.
Summary of the invention
The purpose of this utility model provides a kind of back-off packer fishing tool, by under put to carry back-off packer pulled out, simple to operate, the fishing success ratio height.
The purpose of this utility model is achieved in that by connector, cylindrical shell, bailer grab to be formed, connector is threaded with cylindrical shell top, bailer grab is installed in the cylindrical shell, the bailer grab bottom is an outer conical surface, and the lower end external diameter is little, and the bottom is an internal conical surface in the cylindrical shell, bottom diameter is little, the tapering of outer conical surface, internal conical surface is identical, and the make-up screw thread is arranged at the bottom in the bailer grab, and the bailer grab bottom is milled and is split into the bar body.
The beneficial effects of the utility model are: the bailer grab bottom is milled and is split into the bar body, it is big to rise behind the contact back-off packer, the back-off packer top of fish can enter in the bailer grab, after the back-off packer top of fish enters in the bailer grab, bailer grab restores to the original state, the make-up screw thread of bottom and the screw thread on the back-off packer top of fish are harmonious in the bailer grab, pull out after can connecting, therefore, the utility model by under put and just carry and back-off packer can be pulled out, simple to operate, the fishing success ratio height has remarkable economic efficiency.
Description of drawings
Accompanying drawing 1 is the utility model embodiment half sectional view.
The specific embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described.
The utility model embodiment is made up of connector 1, cylindrical shell 2, bailer grab 3, connector 1 is threaded with cylindrical shell 2 tops, bailer grab 3 is installed in the cylindrical shell 2, bailer grab 3 bottoms are outer conical surface 4, and the lower end external diameter is little, and the bottom is an internal conical surface 5 in the cylindrical shell 2, bottom diameter is little, the tapering of outer conical surface 4, internal conical surface 5 is identical, and the make-up screw thread is arranged at the bottom in the bailer grab 3, and bailer grab 3 bottoms are milled and are split into the bar body.
Claims (1)
1. back-off packer fishing tool, it is characterized in that: form by connector (1), cylindrical shell (2), bailer grab (3), connector (1) is threaded with cylindrical shell (2) top, bailer grab (3) is installed in the cylindrical shell (2), bailer grab (3) bottom is outer conical surface (4), the lower end external diameter is little, the interior bottom of cylindrical shell (2) is internal conical surface (5), bottom diameter is little, the tapering of outer conical surface (4), internal conical surface (5) is identical, the make-up screw thread is arranged at the interior bottom of bailer grab (3), and bailer grab (3) bottom is milled and is split into the bar body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205492601U CN201786304U (en) | 2010-09-26 | 2010-09-26 | Fishing tool for back-off packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205492601U CN201786304U (en) | 2010-09-26 | 2010-09-26 | Fishing tool for back-off packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786304U true CN201786304U (en) | 2011-04-06 |
Family
ID=43818271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205492601U Expired - Fee Related CN201786304U (en) | 2010-09-26 | 2010-09-26 | Fishing tool for back-off packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879086A (en) * | 2015-06-02 | 2015-09-02 | 安东石油技术（集团）有限公司 | Packer and fishing tool |
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
-
2010
- 2010-09-26 CN CN2010205492601U patent/CN201786304U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104879086A (en) * | 2015-06-02 | 2015-09-02 | 安东石油技术（集团）有限公司 | Packer and fishing tool |
| CN109469458A (en) * | 2018-09-27 | 2019-03-15 | 核工业北京地质研究院 | A kind of circlip type fisher and its Refloatation method |
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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: 20110406 Termination date: 20110926 |