CN201661261U - Well casing positioning and reversing tool - Google Patents
Well casing positioning and reversing tool Download PDFInfo
- Publication number
- CN201661261U CN201661261U CN2010201753049U CN201020175304U CN201661261U CN 201661261 U CN201661261 U CN 201661261U CN 2010201753049 U CN2010201753049 U CN 2010201753049U CN 201020175304 U CN201020175304 U CN 201020175304U CN 201661261 U CN201661261 U CN 201661261U
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- CN
- China
- Prior art keywords
- tooth body
- core pipe
- well casing
- reversing tool
- oil well
- 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 discloses a well casing positioning and reversing tool for petroleum industry, which is a tool capable of being positioned at a casing collar to catch and inverse and reliably throwing fishes during the oil well casing taking and changing processes, and comprises an upper joint and a tooth body, wherein the lower internal circle of the upper joint is connected with a hydraulic drive mechanism, the excircle thereof is connected with a protective barrel, the tooth body is installed in an annular space between the hydraulic drive mechanism and the protective barrel, and the hydraulic drive mechanism is utilized to control the operation of the tooth body. In the utility model, the downward and upward moving of the tooth body are forcibly controlled by the hydraulic drive mechanism and are in trackless control. The well casing positioning and reversing tool has simple structure and reliable work, prevents the use accident of the tool, and eliminates the problem and future trouble of unsuccessful fish throwing caused by self accidents. Under the control of the hydraulic drive mechanism, the utility model can position at any depth, can not wear the tooth body, can reliably throw the fishes, improve the operation success rate, and lower the operation cost.
Description
Technical field
The utility model is the underground work instrument that a kind of petroleum industry is used.Especially oil well casing location reversing tool is that a kind of getting at oil well bought or get by illegal means in the cover process, is positioned casing coupling and fishes for back-off and can reliably lose the instrument of fish.
Background technology
Existing sleeve pipe reversing tool, by top connection, track cover, track pin, drag for lance tooth body, center-pole five parts are formed.When being used for sleeve pipe and salvaging back-off, reversing tool carried arrive design attitude, on put and put drill string, reversing tool drags for and obtains sleeve pipe, on carry drill string and implement back-off to the designing requirement tonnage, trip out instrument and waste and old sleeve pipe under the back-off situation smoothly.But owing to drag for lance tooth body with respect to the casing inner diameter interference, G.I.H course of conveying dens in dente body excessive wear cause dragging for obtain not dead; Easily cause the back-off failure when the sleeve pipe reversing torque is excessive in addition; When moment of torsion was big, it is unsuccessful that its track deformation easily causes reversing tool to lose fish, causes serious construction accident.The reversing tool of fish need a kind ofly can reliably be lost again at any depth location location, the tooth body that do not wear and tear in the job site, solves the problem that present conventional reversing tool exists.
Summary of the invention
The purpose of this utility model provides oil well casing location reversing tool, overcomes the problem that existing conventional reversing tool exists, and makes the tooth body be subjected to practical protection, goes into the well smoothly.Cancel the track of conventional reversing tool, the adverse consequences after avoiding it to use improves job success ratio, reduces operating cost.
The present technique solution can reach above-mentioned purpose: oil well casing location reversing tool comprises top connection and tooth body; circle is connected with hydraulic gear in the bottom of top connection; its cylindrical connects the protection tube; the tooth body is installed in the annular space between hydraulic gear and the protection tube, utilizes hydraulic gear to handle the operation of tooth body.
The utlity model has following useful effect: the descending and up of the utility model tooth body executed by hydraulic gear, no track control.It is simple in structure, reliable operation has been avoided the use accident of instrument self, and that has eliminated that self accident brings loses unsuccessful problem of fish and future trouble.Can take in behind the tooth body undergauge in the protection tube, go into the well smoothly, avoided and sleeve pipe between wearing and tearing, protected the tooth body, eliminated the not dead problem that obtains of dragging for.The utility model can reliably be lost fish again at any depth location location, the tooth body that do not wear and tear under the control of hydraulic gear, obviously improved job 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; oil well casing location reversing tool comprises top connection 1 and tooth body 8; circle is connected with hydraulic gear in the bottom of top connection 1; its cylindrical connects protection tube 7; tooth body 8 is installed in the annular space between hydraulic gear and the protection tube 7, utilizes hydraulic gear to handle the operation of tooth body 8.Hydraulic gear comprises core pipe 2, ball seat 5, move about piston 4 and cone core pipe 9, last core pipe 2 and 9 screwed connections of cone core pipe, and ball seat 5 is contained in the centre bore of core pipe 2, and the piston 4 that moves about is installed in the up hydraulic pressure of the tooth body airtight chamber.The bottom caliber of last core pipe 2 is greater than the top caliber, and circle is connected with cone core pipe 9 in its underpart, cooperates and justify in the top of bottom cylindrical and tooth body 8, and tube wall is provided with pressure transmission hole in the middle.Circle is provided with step in the top of cone core pipe 9, and built-in spring 6, its underpart cylindrical are that taper cooperates with the sealed step of tooth body 8, and its bottom cylindrical is provided with chamfering, conveniently goes into the well.Circle is connected with spacing ring 3 in the top of tooth body 8, and circle is provided with sealed step in its middle part, the middle part cylindrical is provided with limited step, its bottom cylindrical design card tooth.The sealed step of circle cooperates with cone core pipe 9 and last core pipe 2 in tooth body 8 middle parts, constitutes the descending hydraulic pressure of tooth body airtight chamber; Tooth body 8 cooperates with spacing ring 3 and last core pipe 2, constitutes the up hydraulic pressure of tooth body airtight chamber, and the piston 4 that moves about just is installed in the up hydraulic pressure of the tooth body airtight chamber.
When going into the well, tooth body 8 undergauges income protection tube 7.When fishing for, suppress from ground, hydraulic coupling enters the descending hydraulic pressure of the tooth body airtight chamber of core pipe 2 belows by the pressure transmission hole of hydraulic gear, promotes the tooth body 8 descending protection tubes 7 that withdraw from, and the external diameter of this instrument expands.On carry drill string, tooth body 8 wedging sleeve pipes are realized fishing for.Back-off when failure, throw steel ball, ball seat 5 descending unlimited pressure transmission holes, hydraulic coupling forces the piston 4 that moves about up, it is up to drive tooth body 8, behind the undergauge in the income protection tube 7, on carry drill string and realize losing fish, avoid causing construction accident.
Claims (6)
1. oil well casing is located reversing tool; comprise top connection (1) and tooth body (8); it is characterized in that circle is connected with hydraulic gear in the bottom of top connection (1), its cylindrical connects protection tube (7), and tooth body (8) is installed on hydraulic gear and protects in the annular space between tin (7).
2. oil well casing according to claim 1 location reversing tool, it is characterized in that hydraulic gear comprises core pipe (2), ball seat (5), the piston that moves about (4) and cone core pipe (9), last core pipe (2) and cone core pipe (9) screwed connection, ball seat (5) is contained in the centre bore of core pipe (2), and the piston that moves about (4) is installed in the up hydraulic pressure of the tooth body airtight chamber.
3. oil well casing according to claim 2 location reversing tool, the bottom caliber that it is characterized in that core pipe (2) is greater than the top caliber, circle is connected with cone core pipe (9) in its underpart, cooperates and justify in the top of bottom cylindrical and tooth body (8), and tube wall is provided with pressure transmission hole in the middle.
4. oil well casing according to claim 2 location reversing tool is characterized in that circle is provided with step in the top of cone core pipe (9), and built-in spring (6), its underpart cylindrical are that taper cooperates with the sealed step of tooth body (8), and cylindrical is provided with chamfering bottom it.
5. oil well casing according to claim 1 location reversing tool is characterized in that circle is connected with spacing ring (3) in the top of tooth body (8), and circle is provided with sealed step in its middle part, the middle part cylindrical is provided with limited step, and cylindrical design is blocked tooth bottom it.
6. oil well casing according to claim 5 location reversing tool is characterized in that sealed step round in tooth body (8) middle part and cone core pipe (9) and last core pipe (2) constitute the descending hydraulic pressure of tooth body airtight chamber; Tooth body (8) constitutes the up hydraulic pressure of tooth body airtight chamber with spacing ring (3) and last core pipe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201753049U CN201661261U (en) | 2010-04-19 | 2010-04-19 | Well casing positioning and reversing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201753049U CN201661261U (en) | 2010-04-19 | 2010-04-19 | Well casing positioning and reversing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201661261U true CN201661261U (en) | 2010-12-01 |
Family
ID=43231676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201753049U Expired - Fee Related CN201661261U (en) | 2010-04-19 | 2010-04-19 | Well casing positioning and reversing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201661261U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775774A (en) * | 2014-01-11 | 2015-07-15 | 中国石油化工股份有限公司 | Quick insertion guide chain of continuous oil pipe injection head |
| CN105401903A (en) * | 2016-01-07 | 2016-03-16 | 西南石油大学 | Three-jaw fisher for coiled tubing |
| CN105863544A (en) * | 2016-05-09 | 2016-08-17 | 西南石油大学 | Slip type hydraulic control inner fishing tool |
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
-
2010
- 2010-04-19 CN CN2010201753049U patent/CN201661261U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775774A (en) * | 2014-01-11 | 2015-07-15 | 中国石油化工股份有限公司 | Quick insertion guide chain of continuous oil pipe injection head |
| CN104775774B (en) * | 2014-01-11 | 2017-11-14 | 中国石油化工股份有限公司 | Coiled tubing injection head quick insertion drag chain |
| CN105401903A (en) * | 2016-01-07 | 2016-03-16 | 西南石油大学 | Three-jaw fisher for coiled tubing |
| CN105401903B (en) * | 2016-01-07 | 2017-11-14 | 西南石油大学 | A kind of coiled tubing three-jaw fisher |
| CN105863544A (en) * | 2016-05-09 | 2016-08-17 | 西南石油大学 | Slip type hydraulic control inner fishing tool |
| CN105863544B (en) * | 2016-05-09 | 2018-03-27 | 西南石油大学 | Fishing tool in a kind of slip-type hydraulic control |
| CN108571318A (en) * | 2017-03-09 | 2018-09-25 | 中国石油化工股份有限公司 | collar locator |
| CN108571318B (en) * | 2017-03-09 | 2021-04-20 | 中国石油化工股份有限公司 | Coupling positioner |
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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: 20101201 Termination date: 20130419 |