CN102797428B - Well abandoning tool capable of locking position - Google Patents
Well abandoning tool capable of locking position Download PDFInfo
- Publication number
- CN102797428B CN102797428B CN201210313572.6A CN201210313572A CN102797428B CN 102797428 B CN102797428 B CN 102797428B CN 201210313572 A CN201210313572 A CN 201210313572A CN 102797428 B CN102797428 B CN 102797428B
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- piston
- slips
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- 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 refer to a kind of after oil drilling terminates, the instrument of interim or permanent abandoned well operation.
Background technology
In current prospect pit operation, after drillng operation terminates, need to carry out interim or permanent abandoned well operation.But the abandoned well instrument of routine can only in rig floor fixed position, the up and down of downhole pipeline can be caused like this, it is special in pipe string is longer, add that hydraulic blow is uneven, the drift of platform and rocking of marine riser, the up and down amplitude of cutter can be larger, and this must cause clipping time long, even cuts failure.
Marine drilling expense is abnormal expensive, and under normal circumstances, semisubmersible platform (shallow water) comprehensive cost needs RMB 2,000,000 yuan/day, and jack-up unit comprehensive cost needs RMB 1,500,000 yuan/day.Improving operation timeliness is the key of saving drilling cost.Therefore, provide that a kind of structure is simple, convenient operation, safe and reliable and operation timeliness can be improved to a certain extent become the industry technical issues that need to address with the abandoned well instrument reducing marine drilling cost.
Above-mentioned discussion content object be to reader introduce may to below by the various aspects of technology relevant for the various aspects of the present invention be described and/or advocate, believe that this discussion content contributes to for reader with background's information, to be conducive to understanding various aspects of the present invention better, therefore, should be appreciated that it is discuss to read these with this angle, instead of admit prior art.
Summary of the invention
The object of the invention is to avoid deficiency of the prior art and abandoned well instrument that a kind of lockable position is provided, with solve offshore drilling terminate rear interim or permanent abandoned well time, the problem that the Casing-Cutting time is oversize or cutting is failed.
Object of the present invention is achieved through the following technical solutions:
A kind of abandoned well instrument of lockable position is provided, comprise body, the front end of body is provided with guide shoe, the back segment of described body is provided with slips, described slips opposing body can move axially and can rotate relative to circumference, when on slips to time mobile, the external diameter of slips magnifies, upper piston is provided with in the epimere of described body, through hole is provided with in the middle part of upper piston, the stage casing of described body is provided with the strut being connected on upper piston lower end, when described upper piston moves down, described strut drives described slips to move up, lower piston is provided with in the hypomere of described body, through hole is provided with in the middle part of lower piston, the hypomere of described body is provided with the abandoned well cutter being connected on lower piston lower end, when described lower piston moves down, lower piston top presses described abandoned well cutter to make it open.
Wherein, the upper reset spring that described upper piston is moved up is provided with in described body epimere.
Wherein, the lower back-moving spring that described lower piston is moved up is provided with in described body hypomere.
Wherein, middle part and the described body of described strut are hinged, and the inner of strut is connected to upper piston lower end, and the outer end of strut is connected to described slips lower end.
Wherein, ball is provided with between described body and slips.
Wherein, the back segment outer peripheral face of described body is the conical surface upwards expanded gradually.
After this abandoned well instrument enters sleeve pipe, can under a less waterpower, upper piston be moved down, strut is opened, force on slips and move, thus slips produces radial tension, stings the inwall of tight sleeve, then applies the pressure of the drill of an about 5KN, can make abandoned well instrument can not be up and down, reach the object of latched position.When after instrument locking, strengthen waterpower, abandoned well cutter below can be made to open, start Casing-Cutting.Cutter at this time can not be up and down, and during operation, usefulness is improved.
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 operation timeliness be improved, and reduces the failed risk of cutting.
3) this tool of invention is simple to operation, can oil gas field extensive use at sea.
Accompanying drawing explanation
The invention will be further described to utilize accompanying drawing, but the embodiment in accompanying drawing does not form any limitation of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to the following drawings.
Fig. 1 is the structural representation of the abandoned well instrument of lockable position.
Include: 1---guide shoe, 2---abandoned well cutter, 3---lower back-moving spring, 4---lower piston, 5---body, 6---strut, 7---slips, 8---upper reset spring, 9---upper piston, 10---ball in FIG.
Detailed description of the invention
Technical scheme of the present invention is understood better in order to make those skilled in the art, below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it should be noted that, when not conflicting, the feature in the embodiment of the application and embodiment can combine mutually.
Core of the present invention is the abandoned well instrument providing a kind of lockable position, its lockable position, with solve offshore drilling terminate rear interim or permanent abandoned well time, the problem that the Casing-Cutting time is oversize or cutting is failed.
As shown in Figure 1, the abandoned well instrument of lockable position of the present invention, comprises body 5, and body 5 is substantially cylindrical.The front end of described body 5 is provided with guide shoe 1, and guide shoe 1 enters sleeve pipe 5 times for guiding body.The back segment of described body 5 is provided with slips 7, and described slips 7 opposing body 5 can move axially and can rotate relative to circumference, when on slips 7 to time mobile, the external diameter of slips 7 magnifies, thus slips generation radial tension, stings the inwall of tight sleeve pipe.Concrete, the back segment outer peripheral face of described body 5 is the conical surface upwards expanded gradually.When on described slips 7 to time mobile, under the effect of the conical surface, described slips 7 external diameter magnifies gradually.Ball 10 is provided with, the resistance that ball 10 rotates for reducing slips 7 opposing body 5 circumference between described body 5 and slips 7.Be provided with upper piston 9 in the epimere of described body 5, upper piston 9 can move down under the effect of waterpower.Be provided with through hole in the middle part of upper piston 9, through hole is used for liquid to be passed through.The upper reset spring 8 that described upper piston 9 is moved up is provided with in described body 5 epimere.The stage casing of described body 5 is provided with the strut 6 being connected on upper piston 9 lower end, and when described upper piston 9 moves down, described strut 6 drives described slips 7 to move up.Concrete, middle part and the described body 5 of described strut 6 are hinged, and the inner of strut 6 is connected to upper piston 9 lower end, and the outer end of strut 6 is connected to described slips 7 lower end.When described upper piston 9 moves down, upper piston 9 pushes away the inner of strut 6 downwards, and strut 6 rotates along pin joint, and the outer end of strut 6 moves up, thus drives described slips 7 to move up.Be provided with lower piston 4 in the hypomere of described body 5, lower piston 4 can move down under the effect of waterpower.Be provided with through hole in the middle part of lower piston 4, through hole is used for liquid to be passed through.The lower back-moving spring 3 that described lower piston 4 is moved up is provided with in described body 5 hypomere.The hypomere of described body 5 is provided with the abandoned well cutter 2 being connected on lower piston 4 lower end, and when described lower piston 4 moves down, lower piston 4 pushes up the described abandoned well cutter 2 of pressure makes it open.
Use abandoned well instrument of the present invention to carry out operation, concrete operations are as follows:
1. this abandoned well tool pipe string is combined according to a conventional method, and down to depth of cut;
2. slow turn on pump, makes upper piston move downward, thus forces galianconism strut to open, make slips moves, thus slips produces radial tension, stings the inwall of tight sleeve pipe;
3. try to transfer whole pipe string (can not elevator be opened), when the display of rig floor the pressure of the drill table is more than 5KN, try to transfer tool string, when the pressure of the drill continues to increase, can not machinery when transferring, represent that this locking tool enters into force, cutting position locks;
4. continue to strengthen waterpower, cutter is opened, operation procedure starts cutting cover routinely.
Set forth a lot of detail in description above so that fully understand the present invention, but the present invention can also adopt other to be different from other modes described here and implement, and therefore, can not be interpreted as limiting the scope of the invention.
In a word; those skilled in the art although the present invention illustrates above-mentioned preferred embodiment, should illustrate, although can carry out various change and remodeling; unless such change and remodeling deviate from scope of the present invention, otherwise all should be included in protection scope of the present invention.
Claims (4)
1. the abandoned well instrument of a lockable position, comprise body (5), the front end of body (5) is provided with guide shoe (1), it is characterized in that: the back segment of described body (5) is provided with slips (7), described slips (7) opposing body (5) can move axially and can rotate relative to circumference, when on slips (7) to time mobile, the external diameter of slips (7) magnifies, upper piston (9) is provided with in the epimere of described body (5), upper piston (9) middle part is provided with through hole, the stage casing of described body (5) is provided with the strut (6) being connected on upper piston (9) lower end, when described upper piston (9) moves down, described strut (6) drives described slips (7) to move up, lower piston (4) is provided with in the hypomere of described body (5), lower piston (4) middle part is provided with through hole, the hypomere of described body (5) is provided with the abandoned well cutter (2) being connected on lower piston (4) lower end, when described lower piston (4) moves down, pressure described abandoned well cutter (2) in lower piston (4) top makes it open,
The upper reset spring (8) that described upper piston (9) is moved up is provided with in described body (5) epimere;
Middle part and the described body (5) of described strut (6) are hinged, and the inner of strut (6) is connected to upper piston (9) lower end, and the outer end of strut (6) is connected to described slips (7) lower end.
2. the abandoned well instrument of lockable position according to claim 1, is characterized in that: be provided with the lower back-moving spring (3) that described lower piston (4) is moved up in described body (5) hypomere.
3. the abandoned well instrument of lockable position according to claim 1 and 2, is characterized in that: be provided with ball (10) between described body (5) and slips (7).
4. the abandoned well instrument of lockable position according to claim 3, is characterized in that: the back segment outer peripheral face of described body (5) is the conical surface upwards expanded 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 CN102797428A (en) | 2012-11-28 |
| CN102797428B true 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103089181B (en) * | 2013-01-14 | 2015-09-09 | 中国石油大学(华东) | Hydraulic cutter in pipe |
| MX2016002070A (en) * | 2013-10-17 | 2016-08-17 | Landmark Graphics Corp | 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 |
| CN113216901B (en) * | 2021-06-10 | 2023-02-28 | 长江大学 | Quick well abandoning device for deep water 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102797428A (en) | 2012-11-28 |
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Granted publication date: 20150325 Termination date: 20180830 |
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