CN114198042A - Ball throwing type cutting and fishing integrated tool and using method thereof - Google Patents
Ball throwing type cutting and fishing integrated tool and using method thereof Download PDFInfo
- Publication number
- CN114198042A CN114198042A CN202110845736.9A CN202110845736A CN114198042A CN 114198042 A CN114198042 A CN 114198042A CN 202110845736 A CN202110845736 A CN 202110845736A CN 114198042 A CN114198042 A CN 114198042A
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- Prior art keywords
- wall
- ball seat
- slip
- pressing cap
- tool
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- 238000005520 cutting process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 10
- 210000000078 claw Anatomy 0.000 claims abstract description 10
- 238000010008 shearing Methods 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 10
- 238000003801 milling Methods 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/16—Grappling tools, e.g. tongs or grabs combined with cutting or destroying means
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B31/00—Fishing for or freeing objects in boreholes or wells
- E21B31/12—Grappling tools, e.g. tongs or grabs
- E21B31/20—Grappling tools, e.g. tongs or grabs gripping internally, e.g. fishing spears
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Marine Sciences & Fisheries (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
Abstract
The invention provides a ball throwing type cutting and fishing integrated tool and a using method thereof.A circulating hole is formed on the side wall of the upper part of a body, the outer wall of the head end of a slip is in threaded connection with the inner wall of the tail end of the body, a ball seat is arranged in the body and is connected with the body through a shearing pin, the inner wall of the middle part of the ball seat is in threaded connection with the outer wall of the head end of a central tube, the tail end of the ball seat forms an elastic claw, the outer wall of the tail end of the central tube is in threaded connection with the inner wall of the head end of a pressing cap, the outer wall of the tail end of the pressing cap is in threaded connection with the inner wall of the middle part of a lower connector, the inner wall of the upper part of the lower connector, the outer wall of the middle part of the pressing cap and the inner wall of the head end of a lower cutting tool are in threaded connection. The tool is simple in structure, convenient to use and long in service life, and is used for realizing one-time operation of cutting, milling and fishing.
Description
Technical Field
The invention relates to the technical field of salvaging of drilling and completion of oil and gas fields, in particular to a ball throwing type cutting and salvaging integrated tool and a using method thereof.
Background
In the current stage, a plurality of large and small oil fields enter the middle and later development stages, the number of workover operations is increased year by year, the progress and development of workover processes and workover tools are brought, and the requirements of field operation teams on cutting and fishing tools are more strict. At present, the conventional cutting and fishing operation is divided into two parts of cutting and fishing, wherein conventional cutting and milling equipment is firstly put in, the target position is operated, and after the cutting and milling are finished, a fishing tool is put in to carry out the fishing operation. At present, a reliable cutting, milling and fishing integrated tool does not exist, and one-step operation is carried out. Therefore, the workover period is long, the efficiency is low, and after the cutter equipment is lifted, the cut and milled upper-layer pipe column is easy to incline and deform, and the secondary salvage accident occurs.
Disclosure of Invention
The invention overcomes the defects in the prior art, the existing cutting and fishing operation tool is divided into a cutting part and a fishing part, and one-step operation cannot be carried out, and the invention provides a ball throwing type cutting and fishing integrated tool and a use method thereof.
The purpose of the invention is realized by the following technical scheme.
A ball throwing type cutting and fishing integrated tool comprises an upper portion recycling fishing tool and a lower portion cutting tool, wherein the upper portion recycling fishing tool comprises a body, a ball seat, a central pipe, a pressing cap, a slip and a lower connector, a circulating hole is formed in the upper portion side wall of the body, a limiting step is formed on the lower portion inner wall of the body, a sawtooth-shaped thread is formed on the inner wall of the body above the limiting step, the head end outer wall of the slip is in threaded connection with the tail end inner wall of the body, the ball seat is arranged in the body and is connected with the body through a shearing pin, the middle inner wall of the ball seat is in threaded connection with the head end outer wall of the central pipe, the head end of the central pipe extends into the ball seat, an elastic claw is formed at the tail end of the ball seat, a thread structure is formed on the outer wall of the elastic claw, and is matched with the sawtooth-shaped thread, the outer wall of the tail end of the central tube is in threaded connection with the inner wall of the head end of the pressing cap, a pressing cap expanding section is formed on the outer wall of the middle of the pressing cap, the pressing cap expanding section is connected with the outer wall of the upper portion of the pressing cap through a pressing cap slope structure, the outer wall of the tail end of the pressing cap is in threaded connection with the inner wall of the middle of the lower connector, the inner wall of the upper portion of the lower connector, the outer wall of the middle of the pressing cap and the inner wall of the body form a slip cavity, a slip is arranged in the slip cavity, the inner wall of the lower portion of the slip is in key connection with the outer wall of the middle of the pressing cap, and the outer wall of the tail end of the lower connector is in threaded connection with the inner wall of the head end of the lower cutting tool.
And a slip diameter-expanding section is formed on the inner wall of the tail end of the slip and is connected with the upper part of the slip through a slip slope surface structure.
And sealing rings are arranged between the inner wall of the body and the outer wall of the ball seat on two sides of the circulating hole.
The body with between the slips, the body with between the ball seat all adopt left turn buckle connection structure.
A using method of a ball throwing type cutting and fishing integrated tool is carried out according to the following steps:
step 1, connecting an upper recovery fishing tool with a lower cutting tool, then putting the upper recovery fishing tool and the lower cutting tool into a well, and starting a pump to perform cutting operation after reaching the target well depth;
2, after the operation to be cut is finished, throwing a ball into the upper recovery fishing tool, enabling the ball to enter the ball seat to realize sealing in the pipe column, and pressurizing downwards to cut off a shear pin between the ball seat and the body, wherein an elastic claw of the ball seat is in threaded connection with the body in a sawtooth shape, after the shear pin is cut off, the ball seat, the central pipe, the press cap and the lower connector move downwards together under the action of the lower pressure to enable the slips to be exposed out of the slip cavity, at the moment, the slope structure of the press cap is in contact with the slope structure of the slips, continuing to raise the pump pressure, and finally, the slips are meshed with the pipe body of the casing pipe to realize sealing between the outer wall of the pipe column and the inner wall of the casing pipe;
step 3, when the ball seat moves below the circulation hole, the circulation hole is opened, a circulation channel of the pipe column and the space between the pipe column and the casing ring is established, the ball seat stops moving, then the pipe column is lifted up, and the cut casing pipe body is fished out;
step 4, when the tonnage of the upper lifting pipe column reaches the design tonnage, and the cut casing pipe body does not move upwards, the fishing tool needs to be recovered from the upper part of the lower part of the upper part of the lower part of the upper part of the lower part of the upper part of the lower part of the upper part of the pipe.
The invention has the beneficial effects that: the tool can complete one-time cutting and fishing operation, save the operation time, improve the operation efficiency and reduce the operation cost.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a ball seat according to the present invention;
FIG. 3 is a schematic structural view of a zigzag thread on the inner wall of the body according to the present invention;
in the figure: 1 is upper portion salvage recovery instrument, 2 is lower part cutting means, 3 is the body, 4 is the ball seat, 5 is the center tube, 6 is for pressing the cap, 7 is the slips, 8 is the lower clutch, 9 is the shear pin, 10 is the circulation hole, 11 is the sealing washer, 12 is the ball.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
The technical solution of the present invention is further illustrated by the following specific examples.
Example one
A ball throwing type cutting and fishing integrated tool comprises an upper portion recycling fishing tool 1 and a lower portion cutting tool 2, wherein the upper portion recycling fishing tool 1 comprises a body 3, a ball seat 4, a central tube 5, a pressing cap 6, a slip 7 and a lower connector 8, a circulating hole 10 is formed in the upper portion side wall of the body 3, a limiting step is formed on the lower portion inner wall of the body 3, a sawtooth-shaped thread is formed on the inner wall of the body 3 above the limiting step, the head end outer wall of the slip 7 is in threaded connection with the tail end inner wall of the body 3, the ball seat 4 is arranged in the body 3, the ball seat 4 is connected with the body 3 through a shearing pin 9, the middle portion inner wall of the ball seat 4 is in threaded connection with the head end outer wall of the central tube 5, the head end of the central tube 5 extends into the ball seat 4, the tail end of the ball seat 4 forms an elastic claw, a thread structure is formed on the outer wall of the elastic claw, and the thread structure is matched with the sawtooth-shaped thread, the tail end outer wall of the central tube 5 is in threaded connection with the head end inner wall of the pressing cap 6, a pressing cap expanding section is formed on the middle outer wall of the pressing cap 6, the pressing cap expanding section is connected with the upper portion outer wall of the pressing cap through a pressing cap slope surface structure, the tail end outer wall of the pressing cap 6 is in threaded connection with the middle inner wall of the lower connector 8, the upper portion inner wall of the lower connector 8, the middle outer wall of the pressing cap 6 and the inner wall of the body 3 form a slip cavity, the slip 7 is arranged in the slip cavity, the lower portion inner wall of the slip 7 is in key connection with the middle outer wall of the pressing cap 6, and the tail end outer wall of the lower connector 8 is in threaded connection with the head end inner wall of the lower cutting tool 2.
Example two
On the basis of the first embodiment, a slip expanding section is formed on the inner wall of the tail end of the slip 7 and is connected with the upper part of the slip 7 through a slip slope surface structure.
Sealing rings 11 are provided between the inner wall of the body 3 and the outer wall of the ball seat 4 on both sides of the circulation hole 10.
Left-handed thread connecting structures are adopted between the body 3 and the slips 7 and between the body 3 and the ball seat 4.
EXAMPLE III
A using method of a ball throwing type cutting and fishing integrated tool is carried out according to the following steps:
step 1, connecting an upper recovery fishing tool 1 and a lower cutting tool 2, then putting the upper recovery fishing tool and the lower cutting tool into a well, and starting a pump to perform cutting operation after reaching the target well depth;
2, after the operation to be cut is finished, throwing a ball 12 into the upper recovery fishing tool 1, enabling the ball 12 to enter the ball seat 4 to realize sealing in the pipe column, and pressurizing downwards to cut off a shearing pin 9 between the ball seat 4 and the body 3, wherein an elastic claw of the ball seat 4 is in threaded connection with the body 3 through a sawtooth shape, after the shearing pin 9 is cut off, the ball seat 4, the central pipe 5, the press cap 6 and the lower joint 8 move downwards together under the action of lower pressure to enable the slips 7 to be exposed out of the slip cavity, at the moment, the press cap slope structure of the press cap 6 is in contact with the slip slope structure of the slips 7 to continue to raise the pump pressure, and the slips 7 are finally engaged with the pipe body of the casing pipe to realize sealing between the outer wall of the pipe column and the inner wall of the casing pipe;
step 3, when the ball seat 4 moves below the circulation hole 10, the circulation hole 10 is opened, a circulation channel of a pipe column and a space between the pipe column and a casing ring is established, the ball seat 4 stops moving, then the pipe column is lifted up, and the cut casing pipe body is fished out;
step 4, when the tonnage of the upper lifting pipe column reaches the design tonnage, and the cut casing pipe body does not move upwards, the upper recovery fishing tool 1 needs to be taken off, the pipe column rotates forwards, the body 3 and the slip 7 are connected through a left turn buckle, the body 3 and the ball seat 4 are connected through a left turn buckle, the slip 7 and the pressing cap 6 are connected through a key, when the pipe column rotates forwards, the body 3 and the slip 7 move upwards and the body 3 and the ball seat 4 move relatively, finally, the ball seat 4 drives the central pipe 5 and the pressing cap 7 to move upwards, the slip 7 is disengaged, the pipe column is lifted, and then the upper recovery fishing tool 1 is taken off.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The present invention has been described in detail, but the above description is only a preferred embodiment of the present invention, and is not to be construed as limiting the scope of the present invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.
Claims (5)
1. The utility model provides a ball throwing type cuts and drags for integrative instrument which characterized in that: the fishing tool comprises an upper part recovery fishing tool and a lower part cutting tool, wherein the upper part recovery fishing tool comprises a body, a ball seat, a central tube, a pressing cap, a slip and a lower connector, a circulating hole is formed in the upper part side wall of the body, a limit step is formed on the lower part inner wall of the body, a sawtooth-shaped thread is formed on the body inner wall above the limit step, the head end outer wall of the slip is in threaded connection with the tail end inner wall of the body, the ball seat is arranged in the body and is connected with the body through a shearing pin, the middle part inner wall of the ball seat is in threaded connection with the head end outer wall of the central tube, the head end of the central tube extends into the ball seat, the tail end of the ball seat forms an elastic claw, a thread structure is formed on the outer wall of the elastic claw, and the thread structure is matched with the sawtooth-shaped thread, the outer wall of the tail end of the central tube is in threaded connection with the inner wall of the head end of the pressing cap, a pressing cap expanding section is formed on the outer wall of the middle of the pressing cap, the pressing cap expanding section is connected with the outer wall of the upper portion of the pressing cap through a pressing cap slope structure, the outer wall of the tail end of the pressing cap is in threaded connection with the inner wall of the middle of the lower connector, the inner wall of the upper portion of the lower connector, the outer wall of the middle of the pressing cap and the inner wall of the body form a slip cavity, a slip is arranged in the slip cavity, the inner wall of the lower portion of the slip is in key connection with the outer wall of the middle of the pressing cap, and the outer wall of the tail end of the lower connector is in threaded connection with the inner wall of the head end of the lower cutting tool.
2. The ball throwing type cutting and fishing integrated tool according to claim 1, characterized in that: and a slip diameter-expanding section is formed on the inner wall of the tail end of the slip and is connected with the upper part of the slip through a slip slope surface structure.
3. The ball throwing type cutting and fishing integrated tool according to claim 1, characterized in that: and sealing rings are arranged between the inner wall of the body and the outer wall of the ball seat on two sides of the circulating hole.
4. The ball throwing type cutting and fishing integrated tool according to claim 1, characterized in that: the body with between the slips, the body with between the ball seat all adopt left turn buckle connection structure.
5. A use method of a ball throwing type cutting and fishing integrated tool is characterized in that: the method comprises the following steps:
step 1, connecting an upper recovery fishing tool with a lower cutting tool, then putting the upper recovery fishing tool and the lower cutting tool into a well, and starting a pump to perform cutting operation after reaching the target well depth;
2, after the operation to be cut is finished, throwing a ball into the upper recovery fishing tool, enabling the ball to enter the ball seat to realize sealing in the pipe column, and pressurizing downwards to cut off a shear pin between the ball seat and the body, wherein an elastic claw of the ball seat is in threaded connection with the body in a sawtooth shape, after the shear pin is cut off, the ball seat, the central pipe, the press cap and the lower connector move downwards together under the action of the lower pressure to enable the slips to be exposed out of the slip cavity, at the moment, the slope structure of the press cap is in contact with the slope structure of the slips, continuing to raise the pump pressure, and finally, the slips are meshed with the pipe body of the casing pipe to realize sealing between the outer wall of the pipe column and the inner wall of the casing pipe;
step 3, when the ball seat moves below the circulation hole, the circulation hole is opened, a circulation channel of the pipe column and the space between the pipe column and the casing ring is established, the ball seat stops moving, then the pipe column is lifted up, and the cut casing pipe body is fished out;
step 4, when the tonnage of the upper lifting pipe column reaches the design tonnage, and the cut casing pipe body does not move upwards, the fishing tool needs to be recovered from the upper part of the lower part of the upper part of the lower part of the upper part of the lower part of the upper part of the lower part of the upper part of the pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845736.9A CN114198042B (en) | 2021-07-26 | 2021-07-26 | Ball throwing type cutting and fishing integrated tool and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110845736.9A CN114198042B (en) | 2021-07-26 | 2021-07-26 | Ball throwing type cutting and fishing integrated tool and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114198042A true CN114198042A (en) | 2022-03-18 |
| CN114198042B CN114198042B (en) | 2024-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110845736.9A Active CN114198042B (en) | 2021-07-26 | 2021-07-26 | Ball throwing type cutting and fishing integrated tool and application method thereof |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718501A (en) * | 2022-03-31 | 2022-07-08 | 中海油能源发展股份有限公司 | Quick casing tie-back sealing device and operation method thereof |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
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| GB219274A (en) * | 1923-07-19 | 1924-12-18 | Kammerer Corp | Tool for cutting and removing pipe from wells |
| GB340292A (en) * | 1929-07-08 | 1931-01-08 | Doheny Stone Drill Co | Improvements in or relating to fishing tools for use in well drilling operations |
| GB681783A (en) * | 1950-12-04 | 1952-10-29 | Baker Oil Tools Inc | Removable sub-surface well tools |
| CN201448080U (en) * | 2009-07-11 | 2010-05-05 | 东营市铁人石油机具有限公司 | Wash-over milling fishing integrated tool |
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| CN103321625A (en) * | 2013-07-09 | 2013-09-25 | 中国石油集团渤海钻探工程有限公司 | Rotation-free locking ring type sliding sleeve with ball seat capable of being taken out |
| CN205858234U (en) * | 2016-07-08 | 2017-01-04 | 中国海洋石油总公司 | Ball-throwing type rinses cutting one cutter |
| CN207960556U (en) * | 2018-02-27 | 2018-10-12 | 中石化石油工程技术服务有限公司 | Cover milling fishing integrated attachment device |
| CN109113684A (en) * | 2018-10-28 | 2019-01-01 | 中国石油化工股份有限公司 | Small casing producing well mechanical sand control method and mechanical sand control tubing string and fishing tool |
| CN109441386A (en) * | 2018-12-19 | 2019-03-08 | 贵州高峰石油机械股份有限公司 | A kind of device being completed at the same time seabed Casing-Cutting and capping operation |
| CN109458151A (en) * | 2018-12-19 | 2019-03-12 | 贵州高峰石油机械股份有限公司 | A kind of device for being completed at the same time sub-sea drilled wells cutting and salvaging with capping operation |
| CN213711006U (en) * | 2020-12-09 | 2021-07-16 | 中国石油天然气集团有限公司 | Mechanical cutting and fishing integrated device |
-
2021
- 2021-07-26 CN CN202110845736.9A patent/CN114198042B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| GB219274A (en) * | 1923-07-19 | 1924-12-18 | Kammerer Corp | Tool for cutting and removing pipe from wells |
| GB340292A (en) * | 1929-07-08 | 1931-01-08 | Doheny Stone Drill Co | Improvements in or relating to fishing tools for use in well drilling operations |
| GB681783A (en) * | 1950-12-04 | 1952-10-29 | Baker Oil Tools Inc | Removable sub-surface well tools |
| CN201448080U (en) * | 2009-07-11 | 2010-05-05 | 东营市铁人石油机具有限公司 | Wash-over milling fishing integrated tool |
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| CN207960556U (en) * | 2018-02-27 | 2018-10-12 | 中石化石油工程技术服务有限公司 | Cover milling fishing integrated attachment device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114718501A (en) * | 2022-03-31 | 2022-07-08 | 中海油能源发展股份有限公司 | Quick casing tie-back sealing device and operation method thereof |
| CN116146135A (en) * | 2023-04-23 | 2023-05-23 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
| CN116146135B (en) * | 2023-04-23 | 2023-07-21 | 中石化西南石油工程有限公司 | A cover and drag for integrated device that is used for constant pressure trap plugging tool fish of well drilling |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114198042B (en) | 2024-01-02 |
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