CN102797428A - Well abandoning tool capable of locking position - Google Patents
Well abandoning tool capable of locking position Download PDFInfo
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- CN102797428A CN102797428A CN2012103135726A CN201210313572A CN102797428A CN 102797428 A CN102797428 A CN 102797428A CN 2012103135726 A CN2012103135726 A CN 2012103135726A CN 201210313572 A CN201210313572 A CN 201210313572A CN 102797428 A CN102797428 A CN 102797428A
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- piston
- slips
- abandoned well
- upper piston
- strut
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Abstract
The invention discloses a well abandoning tool capable of locking a position. The well abandoning tool capable of locking the position comprises a body, wherein the front end of the body is provided with a guide shoe; the rear section of the body is provided with a clamping tile, the clamping tile can axially move relative to the body and relatively circumferentially rotate, and when the clamping tile upwards moves, the outer diameter of the clamping tile is enlarged; the upper section of the body is internally provided with an upper piston, the intermediate part of the upper piston is provided with a through hole; the intermediate section of the body is provided with a support rod connected to the lower end of the upper piston, and when the upper piston downwards moves, the support rod drives the clamping tile to upwards move; the lower section of the body is internally provided with a lower piston, and the intermediate part of the lower piston is provided with the through hole; the lower section of the body is provided with a well abandoning cutter knife connected to the lower end of the lower piston, and when the lower piston downwards moves, the lower piston supports against the well abandoning cutter knife to enable the well abandoning cutter knife to open. In the invention, a position can be locked during operation, and the well abandoning cutter knife can not move up and down, and therefore, the operation effectiveness can be increased.
Description
Technical field
The invention belongs to the technical field of oilfield drilling, specifically be meant a kind of after oil drilling finishes, the instrument that interim or permanent abandoned well operation is used.
Background technology
In present prospect pit operation, after drillng operation finishes, need carry out interim or permanent abandoned well operation.But conventional abandoned well instrument can only be in the rig floor permanent position; Can cause the up and down of down-hole pipe string like this, under the long situation of pipe string, add that hydraulic blow is inhomogeneous especially; Rocking of the drift of platform and marine riser; The up and down amplitude of cutter can be bigger, and this must cause clipping time long, even the cutting failure.
The marine drilling expense is expensive unusually, and generally, semisubmersible platform (shallow water) comprehensive cost needs 2,000,000 yuan/day of RMB, and the jack-up unit comprehensive cost needs 1,500,000 yuan/day of RMB.Improving the operation timeliness is the key of saving drilling cost.Therefore, provide a kind of simple in structure, be convenient to operate, safe and reliable and can improve the operation timeliness to a certain extent and become the industry technical issues that need to address with the abandoned well instrument that reduces the marine drilling cost.
Above-mentioned argumentation content purpose is the various aspects of the technology that maybe be relevant with the various aspects of the present invention that below will be described and/or advocate of introducing to the reader; Believe that this argumentation content helps for the reader background information to be provided; To help understanding various aspects of the present invention better; Therefore, should be appreciated that it is to read these argumentations, rather than admit prior art with this angle.
Summary of the invention
The abandoned well instrument that the objective of the invention is to avoid deficiency of the prior art and a kind of lockable position is provided, during with interim after the solution offshore drilling end or permanent abandoned well, the problem that the cutting sleeve pipe time is oversize or cutting is failed.
The object of the invention is realized through following technical scheme:
The abandoned well instrument of a kind of lockable position is provided, comprises body, the front end of body is provided with guide shoe; The back segment of said body is provided with slips, and said slips body relatively moves axially and can relatively circumferentially rotate, when on the slips when mobile; The external diameter of slips magnifies, and is provided with upper piston in the epimere of said body, and the upper piston middle part is provided with through hole; The stage casing of said body is provided with the strut that is connected on the upper piston lower end, and when said upper piston moved down, said strut drove said slips and moves up; Be provided with lower piston in the hypomere of said body, the lower piston middle part is provided with through hole, and the hypomere of said body is provided with the abandoned well cutter that is connected on the lower piston lower end; When said lower piston moved down, the said abandoned well cutter of lower piston roof pressure opened it.
Wherein, be provided with the upper reset spring that said upper piston is moved up in the said body epimere.
Wherein, be provided with the following back-moving spring that said lower piston is moved up in the said body hypomere.
Wherein, the middle part of said strut and said body are hinged, and the inner of strut is connected to the upper piston lower end, and the outer end of strut is connected to said slips lower end.
Wherein, be provided with ball between said body and the slips.
Wherein, the conical surface of the back segment outer peripheral face of said body for upwards enlarging gradually.
After this abandoned well instrument gets into sleeve pipe, can under a less waterpower, upper piston be moved down, strut is opened; Force on the slips and move; Thereby slips produces radial tension, stings tightly by the inwall of sleeve pipe, applies the pressure of the drill about 5KN again; Can make the abandoned well instrument can not be up and down, reach the purpose of latched position.After the instrument locking, strengthen waterpower, following abandoned well cutter is opened, begin to cut sleeve pipe.Cutter at this time can not be up and down, and usefulness is improved during operation.
Main beneficial effect of the present invention:
1) this tool construction is simple, and cost of investment is low.
2) this tool of invention can make the operation timeliness be improved, and has reduced the risk of cutting failure.
3) this tool of invention is simple to operation, oil gas field extensive use at sea.
Description of drawings
Utilize accompanying drawing that the present invention is described further, but the embodiment in the accompanying drawing do not constitute any restriction of the present invention,, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to following accompanying drawing for those of ordinary skill in the art.
Fig. 1 is the structural representation of the abandoned well instrument of lockable position.
In Fig. 1, include: 1---guide shoe, 2---abandoned well cutter, 3---following back-moving spring, 4---lower piston, 5---body, 6---strut, 7---slips, 8---upper reset spring, 9---upper piston, 10---ball.
The specific embodiment
In order to make those skilled in the art understand technical scheme of the present invention better; Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail; Need to prove that under the situation of not conflicting, the application's embodiment and the characteristic among the embodiment can make up each other.
Core of the present invention is to provide the abandoned well instrument of a kind of lockable position, its lockable position, and during with interim after the solution offshore drilling end or permanent abandoned well, the problem that the cutting sleeve pipe time is oversize or cutting is failed.
As shown in Figure 1, the abandoned well instrument of lockable of the present invention position comprises body 5, and body 5 is substantially cylindrical.The front end of said body 5 is provided with guide shoe 1, and guide shoe 1 is used to guide body 5 to be lowered to sleeve pipe.The back segment of said body 5 is provided with slips 7, and said slips 7 body 5 relatively moves axially and can relatively circumferentially rotate, when on the slips 7 when mobile, the external diameter of slips 7 magnifies, thus slips generation radial tension is stung the inwall of tight sleeve pipe.Concrete, the conical surface of the back segment outer peripheral face of said body 5 for upwards enlarging gradually.When mobile, under the effect of the conical surface, said slips 7 external diameters magnify gradually on said slips 7.Be provided with ball 10 between said body 5 and the slips 7, ball 10 is used to reduce the resistance that slips 7 relative bodies 5 circumferentially rotate.Be provided with upper piston 9 in the epimere of said body 5, upper piston 9 can move down under the effect of waterpower.Upper piston 9 middle parts are provided with through hole, and through hole is used for liquid to be passed through.Be provided with the upper reset spring 8 that said upper piston 9 is moved up in said body 5 epimeres.The stage casing of said body 5 is provided with the strut 6 that is connected on upper piston 9 lower ends, and when said upper piston 9 moved down, said strut 6 drove said slips 7 and moves up.Concrete, the middle part of said strut 6 and said body 5 are hinged, and the inner of strut 6 is connected to upper piston 9 lower ends, and the outer end of strut 6 is connected to said slips 7 lower ends.When said upper piston 9 moved down, upper piston 9 pushed away the inner of strut 6 downwards, and strut 6 rotates along pin joint, and the outer end of strut 6 moves up, and moves up thereby drive said slips 7.Be provided with lower piston 4 in the hypomere of said body 5, lower piston 4 can move down under the effect of waterpower.Lower piston 4 middle parts are provided with through hole, and through hole is used for liquid to be passed through.Be provided with the following back-moving spring 3 that said lower piston 4 is moved up in said body 5 hypomeres.The hypomere of said body 5 is provided with the abandoned well cutter 2 that is connected on lower piston 4 lower ends, and when said lower piston 4 moved down, the said abandoned well cutter 2 of lower piston 4 roof pressures opened it.
Use abandoned well instrument of the present invention to carry out operation, concrete operations are following:
1. by this abandoned well tool pipe string of conventional method combination, and down to depth of cut;
2. slow turn on pump moves downward upper piston, thereby forces the galianconism strut to open, and make on the slips and move, thereby slips produces radial tension, stings the inwall of tight sleeve pipe;
3. try to transfer whole pipe string (can not open elevator), when rig floor the pressure of the drill table show to surpass 5KN, try to transfer tool string, when the pressure of the drill continues to increase, when can not machinery transferring, represent that this locking tool enters into force, cutting position locks;
4. continue to strengthen waterpower, cutter is opened, begin the cutting cover by the routine work program.
Set forth a lot of details so that make much of the present invention in the top description, still, the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as the restriction to protection domain of the present invention.
In a word; The above-mentioned preferred implementation though the present invention has given an example should be explained, though those skilled in the art can carry out various variations and remodeling; Only if such variation and remodeling have departed from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (6)
1. the abandoned well instrument of a lockable position comprises body (5), and the front end of body (5) is provided with guide shoe (1); It is characterized in that: the back segment of said body (5) is provided with slips (7), and said slips (7) body (5) relatively moves axially and can relatively circumferentially rotate, when slips (7) is gone up when mobile; The external diameter of slips (7) magnifies, and is provided with upper piston (9) in the epimere of said body (5), and upper piston (9) middle part is provided with through hole; The stage casing of said body (5) is provided with the strut (6) that is connected on upper piston (9) lower end; When said upper piston (9) when moving down, said strut (6) drives said slips (7) and moves up, and is provided with lower piston (4) in the hypomere of said body (5); Lower piston (4) middle part is provided with through hole; The hypomere of said body (5) is provided with the abandoned well cutter (2) that is connected on lower piston (4) lower end, and when said lower piston (4) when moving down, the said abandoned well cutter of lower piston (4) roof pressure (2) opens it.
2. the abandoned well instrument of lockable according to claim 1 position is characterized in that: be provided with the upper reset spring (8) that said upper piston (9) is moved up in said body (5) epimere.
3. the abandoned well instrument of lockable according to claim 1 position is characterized in that: be provided with the following back-moving spring (3) that said lower piston (4) is moved up in said body (5) hypomere.
4. the abandoned well instrument of lockable according to claim 1 position; It is characterized in that: the middle part of said strut (6) and said body (5) are hinged; The inner of strut (6) is connected to upper piston (9) lower end, and the outer end of strut (6) is connected to said slips (7) lower end.
5. according to the abandoned well instrument of claim 1 or 2 or 3 or 4 described lockable positions, it is characterized in that: be provided with ball (10) between said body (5) and the slips (7).
6. the abandoned well instrument of lockable according to claim 5 position is characterized in that: the conical surface of the back segment outer peripheral face of said body (5) for upwards enlarging gradually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313572.6A CN102797428B (en) | 2012-08-30 | 2012-08-30 | Well abandoning tool capable of locking position |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210313572.6A CN102797428B (en) | 2012-08-30 | 2012-08-30 | Well abandoning tool capable of locking position |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102797428A true CN102797428A (en) | 2012-11-28 |
| CN102797428B CN102797428B (en) | 2015-03-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210313572.6A Expired - Fee Related CN102797428B (en) | 2012-08-30 | 2012-08-30 | Well abandoning tool capable of locking position |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102797428B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089181A (en) * | 2013-01-14 | 2013-05-08 | 中国石油大学(华东) | Hydraulic cutter in pipe |
| CN105370231A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Cutting method for tubular column in oil-gas well |
| CN105612307A (en) * | 2013-10-17 | 2016-05-25 | 界标制图有限公司 | Method and apparatus for well abandonment |
| CN109653697A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Oil pipe hydraulic cuts fishing tool |
| CN113216901A (en) * | 2021-06-10 | 2021-08-06 | 长江大学 | Quick well abandoning device for deepwater high-pressure gas well |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2767794A (en) * | 1955-01-17 | 1956-10-23 | Oil Recovery Corp | Oil well packer construction |
| US2991834A (en) * | 1957-08-21 | 1961-07-11 | Thomas A Kennard | Cutting tool |
| US4003433A (en) * | 1974-11-06 | 1977-01-18 | Mack Goins | Method for cutting pipe |
| US4047568A (en) * | 1976-04-26 | 1977-09-13 | International Enterprises, Inc. | Method and apparatus for cutting and retrieving casing from a well bore |
| US4345646A (en) * | 1978-02-13 | 1982-08-24 | Gearhart Industries, Inc. | Apparatus for chemical cutting |
| CN85109237A (en) * | 1985-11-02 | 1987-07-08 | 阿茨国际器具公司 | The apparatus and method of cutting and recovery submarine surface sleeve pipe |
| US5014782A (en) * | 1990-01-30 | 1991-05-14 | Daspit Ronald Albert | Venting packer |
| CN202718647U (en) * | 2012-08-30 | 2013-02-06 | 中国海洋石油总公司 | Abandonment tool capable of being locked on position |
-
2012
- 2012-08-30 CN CN201210313572.6A patent/CN102797428B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2767794A (en) * | 1955-01-17 | 1956-10-23 | Oil Recovery Corp | Oil well packer construction |
| US2991834A (en) * | 1957-08-21 | 1961-07-11 | Thomas A Kennard | Cutting tool |
| US4003433A (en) * | 1974-11-06 | 1977-01-18 | Mack Goins | Method for cutting pipe |
| US4047568A (en) * | 1976-04-26 | 1977-09-13 | International Enterprises, Inc. | Method and apparatus for cutting and retrieving casing from a well bore |
| US4345646A (en) * | 1978-02-13 | 1982-08-24 | Gearhart Industries, Inc. | Apparatus for chemical cutting |
| CN85109237A (en) * | 1985-11-02 | 1987-07-08 | 阿茨国际器具公司 | The apparatus and method of cutting and recovery submarine surface sleeve pipe |
| US5014782A (en) * | 1990-01-30 | 1991-05-14 | Daspit Ronald Albert | Venting packer |
| CN202718647U (en) * | 2012-08-30 | 2013-02-06 | 中国海洋石油总公司 | Abandonment tool capable of being locked on position |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089181A (en) * | 2013-01-14 | 2013-05-08 | 中国石油大学(华东) | Hydraulic cutter in pipe |
| CN103089181B (en) * | 2013-01-14 | 2015-09-09 | 中国石油大学(华东) | Hydraulic cutter in pipe |
| CN105612307A (en) * | 2013-10-17 | 2016-05-25 | 界标制图有限公司 | Method and apparatus for well abandonment |
| CN105370231A (en) * | 2014-08-22 | 2016-03-02 | 中国石油化工股份有限公司 | Cutting method for tubular column in oil-gas well |
| CN109653697A (en) * | 2017-10-11 | 2019-04-19 | 中国石油化工股份有限公司 | Oil pipe hydraulic cuts fishing tool |
| CN113216901A (en) * | 2021-06-10 | 2021-08-06 | 长江大学 | Quick well abandoning device for deepwater high-pressure gas well |
| CN113216901B (en) * | 2021-06-10 | 2023-02-28 | 长江大学 | Quick well abandoning device for deep water high-pressure gas well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102797428B (en) | 2015-03-25 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20180830 |