CN201574713U - Downhole falling object catch sleeve - Google Patents
Downhole falling object catch sleeve Download PDFInfo
- Publication number
- CN201574713U CN201574713U CN2009202906369U CN200920290636U CN201574713U CN 201574713 U CN201574713 U CN 201574713U CN 2009202906369 U CN2009202906369 U CN 2009202906369U CN 200920290636 U CN200920290636 U CN 200920290636U CN 201574713 U CN201574713 U CN 201574713U
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- self
- cylindrical shell
- tool
- catching
- trouble
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- Expired - Fee Related
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Abstract
The utility model discloses a downhole falling object catch sleeve used in the petroleum industry, which is used for catching downhole falling objects and is especially suitable for catching tubular falling objects. The downhole falling object catch sleeve comprises an upper joint and a guiding shoe, wherein a lengthening barrel and a self-locking barrel are connected between the upper joint and the guiding shoe in sequence. A slideway and a slide block slip are arranged in the self-locking barrel to ensure flexible reset and firm clamping. The self-locking barrel structure of the tool can firmly catch the falling objects. After the falling objects are caught to the ground, the tool can be conveniently disassembled to pour out the falling objects. In the processing of catching, a top of fish can enter in the lengthening barrel in time to be effectively protected, and the complication of catching work can be caused. The tool has the advantages of simple structure and reliable work, effectively increasing the catching success rate and reducing the operation cost.
Description
Technical field
The utility model belongs to the workover treatment instrument of petroleum industry, and particularly a kind of trouble of lost tool in hole fishing socket is used to salvage trouble of lost tool in hole, is particularly useful for salvaging the tubular junk.
Background technology
At present, known fishing tool mainly contains vatman's tool and awl class thread making fishing tool in outer vatman's tool of a class and the lance class, the outer vatman's tool of tube class is by justifying the slips clamping junk that resets, vatman's tool then is that slips produces outer expansion force and drags for and obtain junk in the lance class, and this two classes instrument all has himself unsurmountable shortcoming.The easy spalling fish of vatman's tool causes salvage complicated in the lance class; The slips of the outer vatman's tool of tube class resets dumb.And awl class thread making fishing tool uses limitation bigger, in the thread making process, very easily destroy top of fish, if what use is the left-hand thread instrument, the phenomenon that many places, down-hole back-off in the thread making process, also may occur, cause trouble of lost tool in hole not salvage by Integratively, increase the salvaging number of times, increased operating cost.The on-the-spot fishing tool that needs a kind of simple in structure, reliable operation.
Summary of the invention
The purpose of this utility model provides a kind of trouble of lost tool in hole fishing socket, overcomes the existing fishing tool slips defective dumb, the destructible top of fish that resets, and effectively protects top of fish, and clamping is firm, can withdraw from junk easily after going out well.
The purpose of this utility model is achieved in that a kind of trouble of lost tool in hole fishing socket comprises top connection and guide shoe, is connected lengthening cylindrical shell and self-locking cylindrical shell between top connection and guide shoe successively.Be provided with slideway and slide block slips in the self-locking cylindrical shell, guarantee to reset flexibly, clamping is firm.
The utlity model has following useful effect: the structure of this instrument self-locking cylindrical shell can be caught junk securely.After pulling ground out, can because the interior circle of self-locking cylindrical shell is the little down circle in the big taper of, very easily junk be poured out easily with the instrument dismounting.In the salvaging process, top of fish can in time enter in the lengthening cylindrical shell, is subjected to effective protection, can not cause salvage complicated.This tool construction is simple, reliable operation, has effectively improved fishing success ratio, reduces operating cost.
Description of drawings
Accompanying drawing is a structural representation of the present utility model.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to accompanying drawing, a kind of trouble of lost tool in hole fishing socket comprises top connection 1 and guide shoe 6, is connected lengthening cylindrical shell 2 and self-locking cylindrical shell 4 between top connection 1 and guide shoe 6 successively.The inwall of self-locking cylindrical shell 4 is provided with slideway 3, and slide block slips 5 is housed in the slideway 3.The inner edge of slide block slips 5 is provided with slip insert, is used to tighten junk; Its outside structure cooperates with slideway 3, and slide block slips 5 can be slided freely on slideway 3.At least be provided with two slideways 3 in the self-locking cylindrical shell 4, guarantee the needs of chucking junk.Slideway 3 preferred dovetail slideways, stability is good.The interior circle of self-locking cylindrical shell 4 is the down little circles in the big taper of, can guarantee that junk enters self-locking cylindrical shell 4 after, slide block slips 5 can be fallen and junk radially be tightened voluntarily.The bottom diameter of lengthening cylindrical shell 2 is used to limit the upward position of slide block slips 5 less than the upper-end inner diameter of self-locking cylindrical shell 4.
During concrete the use, the utility model is connected the end of running string, slowly near junk.When junk entered self-locking cylindrical shell 4 under the effect of guide shoe 6, it was up to promote slide block slips 5, thereby the public inscribed circle diameter that slide block slips 5 is formed increases.Arrive the top of self-locking cylindrical shell 4 when junk after, top of fish can pass self-locking cylindrical shell 4 and enter lengthening cylindrical shell 2.Slide block slips 5 meetings this moment are close to the junk outer wall and are freely glided under the self gravitation effect.The upper lifting pipe post, under the effect of circle, slide block slips 5 produces radially clamping force, holds in the junk bottom in power of lifting and 4 tapers of self-locking cylindrical shell, and the clamping junk is finished salvage to ground.Drag for to ground,, pour out junk the dismounting of this instrument.
Claims (6)
1. a trouble of lost tool in hole fishing socket comprises top connection (1) and guide shoe (6), it is characterized in that being connected successively between top connection (1) and guide shoe (6) lengthening cylindrical shell (2) and self-locking cylindrical shell (4).
2. a kind of trouble of lost tool in hole fishing socket according to claim 1, the inwall that it is characterized in that self-locking cylindrical shell (4) is provided with slideway (3), slide block slips (5) is housed in the slideway (3), and the inner edge of slide block slips (5) is provided with slip insert, and its outside structure cooperates with slideway (3).
3. a kind of trouble of lost tool in hole fishing socket according to claim 1 and 2 is characterized in that being provided with at least in the self-locking cylindrical shell (4) two slideways (3).
4. a kind of trouble of lost tool in hole fishing socket according to claim 3 is characterized in that the preferred dovetail slideway of slideway (3).
5. a kind of trouble of lost tool in hole fishing socket according to claim 1 and 2, the interior circle that it is characterized in that self-locking cylindrical shell (4) are the little down circles in the big taper of.
6. a kind of trouble of lost tool in hole fishing socket according to claim 1, the bottom diameter of the cylindrical shell (2) that it is characterized in that extending is less than the upper-end inner diameter of self-locking cylindrical shell (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202906369U CN201574713U (en) | 2009-12-17 | 2009-12-17 | Downhole falling object catch sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202906369U CN201574713U (en) | 2009-12-17 | 2009-12-17 | Downhole falling object catch sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201574713U true CN201574713U (en) | 2010-09-08 |
Family
ID=42694589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202906369U Expired - Fee Related CN201574713U (en) | 2009-12-17 | 2009-12-17 | Downhole falling object catch sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201574713U (en) |
Cited By (1)
| 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 |
-
2009
- 2009-12-17 CN CN2009202906369U patent/CN201574713U/en not_active Expired - Fee Related
Cited By (2)
| 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 |
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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: 20100908 Termination date: 20111217 |