CN102913171A - Slip socket - Google Patents
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- CN102913171A CN102913171A CN 201210422605 CN201210422605A CN102913171A CN 102913171 A CN102913171 A CN 102913171A CN 201210422605 CN201210422605 CN 201210422605 CN 201210422605 A CN201210422605 A CN 201210422605A CN 102913171 A CN102913171 A CN 102913171A
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- China
- Prior art keywords
- slip socket
- cylindrical shell
- fishing
- watt
- handed
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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.)
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Abstract
The invention discloses a slip socket, which relates to a grappling tool for fishing or removing objects in a borehole or a well. The slip socket disclosed by the invention comprises a hollow tubular upper joint and a hollow tubular barrel connected with the upper joint, wherein the inner surface of the barrel is provided with left-hand buttress threads thereon. The slip socket has high tensile strength and large fish fishing range, can realize the cycle operation of fishing, retreating and fluid drilling, and can solve the fishing technical problems of burrs on fish heads, breakage and serious deviation from borehole axis. The slip socket has the advantages of reliable technology, convenience for field operation and high fishing success rate.
Description
Technical field
The present invention relates to a kind of grappling tool of in well or well, salvaging or get rid of object.
Background technology
Processing fish trouble can be with die nipple, drag for lance salvages from a fish internal diameter, and also available female coupling tap is salvaged from a fish external diameter.Use die nipple, drag for lance requirement fish larger hydrophthalmia is arranged, enough with the fishing tool intensity that guarantees well, otherwise, even engaging fish, also frangibility.Female coupling tap is salvaged fish needs falling buckle, the overweight easy slippage of fish, and fish is blocked can not withdraw from.
Summary of the invention
The present invention aims to provide a kind of slip socket that is applicable to salvage overweight fish in deep-well, ultradeep well.
Slip socket of the present invention comprises the top connection of hollow tube-shape and the hollow tube-shape cylindrical shell that links to each other with top connection, and cylinder inner surface is provided with left-handed buttless thread.
Preferably, bobbin body inner surface is provided with blue watt, also be provided with left-handed buttless thread on blue watt, and the left-handed buttless thread conical surface of Lan Washang is narrower than the left-handed buttless thread conical surface on the cylinder inner surface.
More preferably, also comprise a guide shoe, guide shoe links to each other with the end of cylindrical shell away from top connection.
Further preferably, described guide shoe is provided with helical incline at the end away from cylindrical shell.
Perhaps more preferably, also comprise a milling shoe that links to each other with blue watt bottom, its underpart is provided with inner conical surface, and inner conical surface is provided with tooth milling fish capillus thorn.
Further preferably, described milling shoe inner surface is provided with R shape sealing ring, and external surface is provided with O-ring seals.
Tensile strength of the present invention is high, salvages the fish size range large, can realize salvaging, withdraws from, the circulation of drilling fluid operation, can solve that fish is jagged, the fishing operation problem of breakage and substantial deviation borehole axis.Its technology is reliable, and execute-in-place is convenient, and fishing success ratio is high.
Salvage effect in order further to improve, the present invention can also use with other annex, comprises spiral shell watt assembly, lengthens cylinder and wall hook formula guide shoe.
Description of drawings
Fig. 1 is the partial sectional view of embodiment one.
Fig. 2 is the partial sectional view of spiral shell watt assembly, among the figure, and 8-A type packing, 9-spiral shell watt, 10-control card.
Fig. 3 for lengthen cylinder partial sectional view.
Fig. 4 is the partial sectional view of wall hook formula guide shoe.
The specific embodiment
Embodiment one.
Slip socket of the present invention comprises the top connection 1 of hollow tube-shape, hollow tube-shape cylindrical shell 3, guide shoe 7 and milling shoe 5.
Top connection 1 upper internal threaded is connected with the salvaging drilling tool, and bottom closely-pitched external screw thread is connected with cylindrical shell 3 tops.
Bobbin body inner surface is provided with blue watt 2, also be provided with left-handed buttless thread on blue watt 2, and the left-handed buttless thread conical surface on blue watt 2 is narrower than the left-handed buttless thread conical surface on cylindrical shell 3 inner surfaces, can move axially certain distance in bobbin body 3.
Milling shoe 5 bottoms are provided with inner conical surface, inner conical surface is provided with tooth milling fish capillus thorn, top is provided with protruding key, protruding key inserts blue watt 2 down gaps and pincers enter in the keyway of cylindrical shell 3, can prevent blue watt 2 in cylindrical shell 3 interior rotations, TORQ can be passed to milling shoe 5 by salvaging drilling tool, top connection 1, cylindrical shell 3 again, milling fish capillus thorn.Described milling shoe 5 inner surfaces are provided with R shape sealing ring 4, and external surface is provided with O-ring seals 6, realize the sealing between fish and cylinder inboard wall, make it circulating fluid.
Claims (6)
1. slip socket is characterized in that comprising the top connection (1) and the hollow tube-shape cylindrical shell (3) that links to each other with top connection (1) of hollow tube-shape, and cylindrical shell (3) inner surface is provided with left-handed buttless thread.
2. slip socket as claimed in claim 1, it is characterized in that bobbin body inner surface is provided with blue watt (2), also be provided with left-handed buttless thread on blue watt (2), and the left-handed buttless thread conical surface on blue watt (2) is narrower than the left-handed buttless thread conical surface on cylindrical shell (3) inner surface.
3. slip socket as claimed in claim 1 or 2 characterized by further comprising a guide shoe (7), and guide shoe (7) links to each other with the end of cylindrical shell (3) away from top connection (1).
4. slip socket as claimed in claim 3 is characterized in that described guide shoe (7) is provided with helical incline at the end away from cylindrical shell (3).
5. slip socket as claimed in claim 1 or 2 characterized by further comprising a milling shoe (5) that links to each other with blue watt (2) bottom, and its underpart is provided with inner conical surface, and inner conical surface is provided with tooth milling fish capillus thorn.
6. slip socket as claimed in claim 5 is characterized in that described milling shoe (5) inner surface is provided with R shape sealing ring (4), and external surface is provided with O-ring seals (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210422605 CN102913171A (en) | 2012-10-30 | 2012-10-30 | Slip socket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210422605 CN102913171A (en) | 2012-10-30 | 2012-10-30 | Slip socket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102913171A true CN102913171A (en) | 2013-02-06 |
Family
ID=47611714
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201210422605 Pending CN102913171A (en) | 2012-10-30 | 2012-10-30 | Slip socket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102913171A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225485A (en) * | 2013-05-06 | 2013-07-31 | 重庆望江工业有限公司 | Releasing type spiral slip overshot |
| CN104373071A (en) * | 2014-11-17 | 2015-02-25 | 大同煤矿集团有限责任公司 | Efficient salvage device |
| CN107060679A (en) * | 2017-04-25 | 2017-08-18 | 西南石油大学 | A kind of screw rod hydraulic returnable fishing tool |
| CN111677473A (en) * | 2020-03-02 | 2020-09-18 | 中煤科工集团西安研究院有限公司 | Rotary overshot for underground coal mine and overshot method |
| CN112253044A (en) * | 2020-11-05 | 2021-01-22 | 中国石油集团渤海钻探工程有限公司 | High-ductility small-diameter dissolvable bridge plug |
-
2012
- 2012-10-30 CN CN 201210422605 patent/CN102913171A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225485A (en) * | 2013-05-06 | 2013-07-31 | 重庆望江工业有限公司 | Releasing type spiral slip overshot |
| CN104373071A (en) * | 2014-11-17 | 2015-02-25 | 大同煤矿集团有限责任公司 | Efficient salvage device |
| CN107060679A (en) * | 2017-04-25 | 2017-08-18 | 西南石油大学 | A kind of screw rod hydraulic returnable fishing tool |
| CN107060679B (en) * | 2017-04-25 | 2023-04-21 | 西南石油大学 | Screw rod hydraulic pressure can move back formula fishing tool |
| CN111677473A (en) * | 2020-03-02 | 2020-09-18 | 中煤科工集团西安研究院有限公司 | Rotary overshot for underground coal mine and overshot method |
| CN111677473B (en) * | 2020-03-02 | 2022-05-13 | 中煤科工集团西安研究院有限公司 | Rotatable fishing barrel used under coal mine and fishing method thereof |
| CN112253044A (en) * | 2020-11-05 | 2021-01-22 | 中国石油集团渤海钻探工程有限公司 | High-ductility small-diameter dissolvable bridge plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130206 |