CN201934045U - Tool for fishing coiled tubings - Google Patents
Tool for fishing coiled tubings Download PDFInfo
- Publication number
- CN201934045U CN201934045U CN2010206846618U CN201020684661U CN201934045U CN 201934045 U CN201934045 U CN 201934045U CN 2010206846618 U CN2010206846618 U CN 2010206846618U CN 201020684661 U CN201020684661 U CN 201020684661U CN 201934045 U CN201934045 U CN 201934045U
- Authority
- CN
- China
- Prior art keywords
- slip
- sliding rail
- coiled tubing
- cylindrical shell
- fishing
- 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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- Fishing Rods (AREA)
Abstract
A tool for fishing coiled tubings is applied to fishing coiled tubings in oil field underground. The lower end of an upper joint is provided with external threads, the lower end of the upper joint is in threaded connected with a barrel, the barrel is in a cylindrical shape, and the lower end of the barrel are spiral guide shoes. A sliding track is fixed inside the barrel, the inner lateral side of the sliding track is provided with a dovetail groove, the dovetail groove is provided with a sliding slip, one side of the sliding slip is a dovetail block, and the dovetail block is arranged inside the dovetail groove. The backside of the dovetail block of the sliding slip is provided with an arc-shaped slip insert which has an identical external diameter with the coiled tubings. The tool has the function of guiding fish into the barrel, fishing, and circulating flushing manhole, and is reliable in fishing dropped objects. The monolithic sliding slip slides in the track to adapt to small-sized fish, accordingly the locking degree of the slip to the coiled tubing is high, further improving the success rate of the fishing.
Description
Technical field
The utility model relates to oilfield downhole operation fishing operation field, and special tool is salvaged in particularly a kind of coiled tubing down-hole.
Background technology
At present, the oil field has the coiled tubing of application to carry out underground work production on stream.Use coiled tubing to carry out in the underground work process in the long period, the coiled tubing body causes fatigue fracture easily, and the accident that often has coiled tubing to fall in the well takes place.Form the number joint at the down-hole coiled tubing, even tens save the junk that is uneven in length.Especially at ultradeep well small casing well, the situation that falls into the coiled tubing in the well is more complicated, brings quite big difficulty to the fall operation of coiled tubing of well of salvaging.Handle such horizontal well trouble of lost tool in hole now and do not have effective fishing tool.
The utility model content
The purpose of this utility model is: a kind of coiled tubing fishing tool is provided, and G.I.H can clamp the coiled tubing upper end, realizes the salvaging of the coiled tubing of well.And salvaging the time can carry out circulation well cleanup.
The technical solution adopted in the utility model is: the coiled tubing fishing tool, mainly to form by top connection, cylindrical shell, sliding rail and slip slips, and top connection has centre bore, and there is the drilling rod internal thread upper end of top connection, can be connected G.I.H with drilling rod.It is characterized in that: there is external screw thread the lower end in top connection, and the lower end screw thread of top connection is connected with cylindrical shell, and cylindrical shell is a cylindrical shape, and the lower end of cylindrical shell is the spirality guide shoe.Be fixed with a sliding rail in cylindrical shell, the medial surface of sliding rail has dovetail groove, and a slip slips is arranged in dovetail groove, and a side of slip slips is a dovetails, and dovetails is in the dovetail groove of sliding rail; The same circular arc slip insert of coiled tubing external diameter is arranged on the dovetails back side of slip slips.
The lateral surface of described sliding rail is an arc surface shape, and the radius of circular arc is identical with the cylinder inboard wall radius, and the medial surface of sliding rail is the plane, and the angle between plane and the cylinder inboard wall is between 7～20 degree.
In order to make the slip slips can not skid off dovetail groove automatically, be welded with block in the dovetail groove lower end of sliding rail.
Summary coiled tubing fishing tool principle.Consult Fig. 1.A skateboard track 3 that has the gradient dovetail groove is housed in the fishing tool cylindrical shell 2, slidably dovetails shape slip slips 4 is housed on the sliding rail 3, in the process of salvaging coiled tubing, after the coiled tubing top of fish enters cylindrical shell 2 lower ends, under the effect of frictional force, promote slip slips 4 and move up; When on when carrying fishing string, slip slips 4 moves down in action of gravity because the effect of gradient dovetail groove, slip slips 4 is in folding process, radial dimension dwindles, thus the slip insert of slip slips 4 is with the coiled tubing chucking and drag for and obtain.
Summary coiled tubing fishing tool using method
1. because coiled tubing the fish of down-hole, generally all leans against on the borehole wall, and the upper end jointed rod of coiled tubing fishing tool forms fishing string, drilling rod is delivered to the top of coiled tubing the down-hole fish with the coiled tubing fishing tool.
2. behind the position that definite arrival tubing string is hampered, the turn on pump cyclic flusher, slowly fishing string is transferred in rotation, and coiled tubing is in the top of down-hole fish enters the coiled tubing fishing tool; When length above instrument is gone into by drilling tool well head side, termination of pumping.
3. steadily trip out fishing string, coiled tubing fishing tool and junk are together dragged for obtain out well head.
The beneficial effects of the utility model: the utility model coiled tubing fishing tool, have the guiding fish and enter cylindrical shell, salvaging, cyclic flusher well function, the salvaging junk is reliable, because monolithic slip slips is in slide, can adapt to less fish size, the degree height of slips locking coiled tubing, thus the success rate of salvaging improved.
Description of drawings
Fig. 1 is the utility model coiled tubing fishing tool structural profile schematic diagram.
Among the figure, 1. top connection, 2. cylindrical shell, 3. sliding rail, 4. slip slips, 5. block.
The specific embodiment
Embodiment 1: with a coiled tubing fishing tool is example, and the utility model is described in further detail.
Consult Fig. 1.The utility model coiled tubing fishing tool mainly is made up of top connection 1, cylindrical shell 2, sliding rail 3 and slip slips 4.Top connection 1 has centre bore, and there is the drilling rod internal thread upper end of top connection 1, can be connected G.I.H with drilling rod.There is external screw thread lower end in top connection 1, and the lower end screw thread of top connection 1 is connected with cylindrical shell 2, and cylindrical shell 2 is a cylindrical shape, and cylindrical shell 2 internal diameters are 82 millimeters, and the lower end of cylindrical shell 2 is the spirality guide shoe.
Be welded with a sliding rail 3 in cylindrical shell 2, the lateral surface of sliding rail 3 is an arc surface shape, and the radius of circular arc is identical with cylindrical shell 2 inwall radiuses, and the medial surface of sliding rail 3 is the plane, angle 12 degree between plane and cylindrical shell 2 inwalls.The medial surface of sliding rail 3 has dovetail groove, and a slip slips 4 is arranged in dovetail groove, and a side of slip slips 4 is a dovetails, and dovetails is welded with a block 5 in the dovetail groove lower end of sliding rail 3 in the dovetail groove of sliding rail 3.The same circular arc slip insert of coiled tubing diameter is arranged on the dovetails back side of slip slips 4.The slip insert of slip slips 4 protrudes the dovetail groove plane of sliding rail 3.
Claims (3)
1. coiled tubing fishing tool, mainly form by top connection (1), cylindrical shell (2), sliding rail (3) and slip slips (4), top connection (1) has centre bore, there is the drilling rod internal thread upper end of top connection (1), it is characterized in that: there is external screw thread the lower end in top connection (1), the lower end screw thread of top connection (1) is connected with cylindrical shell (2), and cylindrical shell (2) is a cylindrical shape, and the lower end of cylindrical shell (2) is the spirality guide shoe; Be fixed with a sliding rail (3) in cylindrical shell (2), the medial surface of sliding rail (3) has dovetail groove, and a slip slips (4) is arranged in dovetail groove, and a side of slip slips (4) is a dovetails, and dovetails is in the dovetail groove of sliding rail (3); The same circular arc slip insert of coiled tubing external diameter is arranged on the dovetails back side of slip slips (4).
2. coiled tubing fishing tool according to claim 1, it is characterized in that: the lateral surface of described sliding rail (3) is an arc surface shape, the radius of circular arc is identical with cylindrical shell (2) inwall radius, the medial surface of sliding rail (3) is the plane, and the angle between plane and cylindrical shell (2) inwall is between 7～20 degree.
3. coiled tubing fishing tool according to claim 1 is characterized in that: be welded with block (5) in the dovetail groove lower end of sliding rail (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206846618U CN201934045U (en) | 2010-12-17 | 2010-12-17 | Tool for fishing coiled tubings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206846618U CN201934045U (en) | 2010-12-17 | 2010-12-17 | Tool for fishing coiled tubings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201934045U true CN201934045U (en) | 2011-08-17 |
Family
ID=44445567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206846618U Expired - Fee Related CN201934045U (en) | 2010-12-17 | 2010-12-17 | Tool for fishing coiled tubings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201934045U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806187A (en) * | 2014-01-27 | 2015-07-29 | 牡丹江宏冈石油工具厂 | Non-metal continuous oil tube catch sleeve |
| CN108868742A (en) * | 2018-06-08 | 2018-11-23 | 中国石油天然气股份有限公司 | Method, device and storage medium for determining source of pipe type underground falling object |
-
2010
- 2010-12-17 CN CN2010206846618U patent/CN201934045U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104806187A (en) * | 2014-01-27 | 2015-07-29 | 牡丹江宏冈石油工具厂 | Non-metal continuous oil tube catch sleeve |
| CN108868742A (en) * | 2018-06-08 | 2018-11-23 | 中国石油天然气股份有限公司 | Method, device and storage medium for determining source of pipe type underground falling object |
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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: 20110817 Termination date: 20111217 |