CN116556882A - Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer - Google Patents

Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer Download PDF

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Publication number
CN116556882A
CN116556882A CN202210680846.9A CN202210680846A CN116556882A CN 116556882 A CN116556882 A CN 116556882A CN 202210680846 A CN202210680846 A CN 202210680846A CN 116556882 A CN116556882 A CN 116556882A
Authority
CN
China
Prior art keywords
sliding sleeve
central tube
sleeve
packer
cap
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.)
Pending
Application number
CN202210680846.9A
Other languages
Chinese (zh)
Inventor
鲁延瑞
李长偲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinhu Fulcrum Petroleum Technology Co ltd
Original Assignee
Jinhu Fulcrum Petroleum Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jinhu Fulcrum Petroleum Technology Co ltd filed Critical Jinhu Fulcrum Petroleum Technology Co ltd
Priority to CN202210680846.9A priority Critical patent/CN116556882A/en
Publication of CN116556882A publication Critical patent/CN116556882A/en
Pending legal-status Critical Current

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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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/129—Packers; Plugs with mechanical slips for hooking into the casing
    • 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
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/12—Packers; Plugs
    • E21B33/127—Packers; Plugs with inflatable sleeve
    • 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
    • E21B34/00—Valve arrangements for boreholes or wells
    • E21B34/06—Valve arrangements for boreholes or wells in wells
    • E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
    • 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
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/10—Geothermal energy

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

The invention discloses an infinite-stage full-drift diameter switchable sleeve sliding sleeve switching packer for an oil field, which comprises the following components: the device comprises an upper joint, an upper central tube, a connecting sleeve, a balance valve, an upper combining cap, a rubber cylinder, a lower combining cap, a limiting cap, a cone, a lower central tube, slips, slip seats, positioning pins, a groove body, friction blocks, a baffle ring, a locking cap, a rail changing mechanism and a guiding lower joint. The invention realizes the sleeve sliding sleeve switch and bottom seal fracturing by one pipe column, solves the problem that the pain points of the sleeve sliding sleeve cannot be accurately positioned by the sleeve sliding sleeve switch tool and the fracturing packer, solves the problem that the traditional Y211 fracturing packer is wrongly set when the pipe column is pulled down by the design of special tracks and friction blocks, can be used as a sliding sleeve opening and fracturing tool, can be used as a sliding sleeve closing tool through simple adjustment, has simple operation, and reduces the field operation cost and the time cost.

Description

Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer
Technical Field
The invention relates to the technical field of downhole tools in oil fields, in particular to an infinite-stage full-drift-diameter switchable sleeve sliding sleeve switching packer for oil fields.
Background
The sleeve sliding sleeve with infinite-level full-diameter switchable is an indispensable tool for staged fracturing on oil fields. At present, the sleeve sliding sleeve needs to be put into a well along with the sleeve in the use process, and well cementation is performed normally. After well cementation, a target sliding sleeve is required to be found through a special tool, the sliding sleeve is opened, then a tubular column of the opening tool is lifted out, then a fracturing packer is lowered, the position below the target sliding sleeve is found, and the fracturing can be performed after setting. The traditional opening tool and the fracturing packer are often difficult to accurately position when facing the sliding sleeve, and the opening of the sliding sleeve and the setting of the fracturing packer require multiple tubular columns to be lifted down, so that the operation is complex and the success rate is low.
Disclosure of Invention
The invention aims to provide an infinite-stage full-drift-diameter switchable sleeve sliding sleeve switching packer for an oil field, which solves the problem of incorrect setting when a traditional Y211 fracturing packer is started and started, can be used as a sliding sleeve opening and fracturing tool, can be used as a sliding sleeve closing tool after simple adjustment, is simple in operation, and reduces the field operation cost and the time cost.
In order to achieve the above purpose, the invention adopts the following technical scheme: an infinite stage full-path switchable sleeve sliding sleeve switch packer for an oil field, comprising: the device comprises an upper joint, an upper central tube, a connecting sleeve, a balance valve, an upper cap, a rubber cylinder, a lower cap, a limiting cap, a cone, a lower central tube, slips, a slip seat, a positioning pin, a groove body, a friction block, a baffle ring, a locking cap, a rail changing mechanism and a guiding lower joint, wherein the upper joint, the upper central tube and the balance valve are connected into a whole through threads and are movably connected with the connecting sleeve, the upper cap and the lower central tube are connected into a whole through threads, the lower cap and the cone are connected into a whole through threads, and are sleeved on the lower central tube together with the rubber cylinder and are limited through the limiting cap;
the lower central tube is provided with two long rails, two short rails and two positioning rails, and one end of the lower central tube is provided with four rail end point grooves which are staggered with the long rails and the short rails at a certain angle;
the friction block is embedded in the groove body, two ends of the friction block are fixed by baffle rings, the slip seat is connected with the groove body through threads, positioning pins are arranged in the slip seat, and the positioning pins are embedded in positioning tracks on the lower central tube; the slips are embedded in the slip seat and are supported by springs;
the rail changing mechanism comprises a swivel and a rail changing pin, the rail changing pin is arranged inside the swivel, the swivel is sleeved on the lower central tube, the outer layer of the swivel is wrapped by a locking cap, the locking cap is connected with the groove body through threads, and the guiding lower joint is connected with the lower central tube through threads.
Preferably, the balance valve is provided with a sealing material, and the balance valve is in sealing fit with the lower central tube.
Preferably, the total length of the long track and the short track on the lower central tube is the same, and the middle of the short track is broken into an upper part and a lower part by a break point.
Preferably, the friction blocks are divided into positioning friction blocks and common friction blocks, wherein the positioning friction blocks are provided with bulges in the middle as positioning pins, and springs are arranged in the friction blocks for supporting.
Preferably, the groove body is sleeved on the central tube and slides up and down on the outer side of the central tube.
Preferably, one end of the slip has an angled conical surface, the angle of the conical surface matching the angle of the cone, and the slip is radially expandable within the slip bowl after the slip contacts the cone.
Preferably, one end of the locating pin is embedded into a locating track on the lower central tube.
Advantageous effects
The invention realizes sleeve sliding sleeve opening and closing and bottom sealing fracturing through one pipe column, solves the problem that the pain points of the sleeve sliding sleeve cannot be accurately positioned by the sleeve sliding sleeve opening and closing tool and the fracturing packer, solves the problem that the traditional Y211 fracturing packer is wrongly set when the pipe column is pulled down by the design of special tracks and friction blocks, can be used as a sliding sleeve opening and fracturing tool, can be used as a sliding sleeve closing tool through simple adjustment, has simple operation, and reduces the field operation cost and the time cost.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic diagram of a construction of an infinite stage full-diameter switchable sleeve sliding sleeve switching packer for an oilfield;
FIG. 2 is a schematic diagram showing the development of a lower center tube of an infinite-stage full-diameter switchable sleeve sliding sleeve switching packer for an oil field;
FIG. 3 is a diagram of a first embodiment of an infinite stage full-path switchable sleeve sliding sleeve switching packer for an oilfield according to the present invention;
FIG. 4 is a diagram of a first embodiment of an infinite stage full path switchable sleeve sliding sleeve switching packer for an oilfield according to the present invention.
Legend description:
1. an upper joint; 2. an upper center tube; 3. connecting sleeves; 4. a balancing valve; 5. and (3) assembling a cap; 6. a rubber cylinder; 7. lower cap; 8. a limit cap; 9. a cone; 10. a lower center tube; 11. a slip; 12. slip seat; 13. positioning pins; 14. a tank body; 15. a baffle ring; 16. a locking cap; 17. a rail changing mechanism; 18. guiding the lower joint; 19. a long rail; 1901. rail changing bottom dead center; 20. positioning a track; 21. a short track; 2101. a short track stuck dead point; 22. an inner sliding sleeve; 23. a catching groove; 24. friction blocks.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
Referring to fig. 1-4, an embodiment of the invention provides an infinite stage full-path switchable sleeve sliding sleeve switching packer for an oil field, comprising: the upper joint 1 is used for being connected with an oil pipe column, and a common oil pipe or a continuous oil pipe can be selected through an adapter; the upper central tube 2, the connecting sleeve 3 and the balance valve 4 form a channel for balancing internal and external pressure, so that the underground pressure is not influenced when the well is in the process of descending, and a sand adding channel is provided when the well is in fracturing and sand adding; the upper parallel cap 5, the lower parallel cap 7, the rubber cylinder 6, the cone 9 and the limit cap 8 are packer setting components, and the annular space of the oil sleeve is sealed after the packer is set; the slips 11 and the slip seat 12 are packer anchoring components and provide supporting force for the compression of the rubber cylinder 6; the positioning pin 13, the friction block 24, the groove body 14, the baffle ring 15, the lock cap 16 and the rail changing mechanism 17 are packer rail changing components, the switching between packer rails is realized through the friction between the friction block 24 and the sleeve wall, and meanwhile, the packer is also righted, wherein the positioning pin 13 is embedded in the positioning rail 20 of the lower central tube 10, and the friction block 24 is ensured not to rotate in the rail changing process; the pilot sub 18 acts as a packer pilot to provide guidance for the packer during the run in, and may also be used to attach tools such as tubing as a string weight.
The upper joint 1, the upper central tube 2 and the balance valve 4 are connected into a whole through threads and are movably connected with the connecting sleeve 3, the upper parallel cap 5 and the lower central tube 10 are connected into a whole through threads, the lower parallel cap 7 and the cone 9 are connected into a whole through threads, and the lower parallel cap, the cone and the cone 6 are sleeved on the lower central tube 10 together and are limited through the limiting cap 8.
The lower central tube 10 is provided with two long rails 19, two short rails 21 and two positioning rails 20, and one end of the lower central tube 10 is provided with four rail end grooves which are staggered with the long rails 19 and the short rails 21 at a certain angle.
The friction block 24 is embedded in the groove body 14, two ends of the friction block 24 are fixed by the baffle ring 15, the friction block 24 is divided into a positioning friction block 24 and a common friction block 24, the positioning friction block 24 is provided with a bulge in the middle and is used as a positioning pin, the inside of the friction block 24 is provided with a spring support, the slip seat 12 and the groove body 14 are connected through threads, the inside of the slip seat 12 is provided with a positioning pin 13, and the positioning pin 13 is embedded in a positioning track 20 on the lower central tube 10; the slips 11 are embedded in the slip bowl 12 and are supported by springs; the tank 14 is fitted over the central tube and slides up and down on the outside of the central tube.
The rail changing mechanism 17 comprises a swivel and a rail changing pin, the rail changing pin is arranged inside the swivel, the swivel is sleeved on the lower central tube 10, the outer layer is wrapped by a locking cap 16, the locking cap 16 is connected with a groove body 14 through threads, a guiding lower joint 18 is connected onto the lower central tube 10 through threads, a long rail 19 on the lower central tube 10 is identical to the total length of the short rail 21, the middle of the short rail 21 is broken into a short rail clamping dead point 2101 and a rail changing bottom dead point 1901 by a break point, one end of the slip 11 is provided with a conical surface with a certain angle, the angle of the conical surface is matched with the angle of the cone 9, after the slip 11 is contacted with the cone 9, the slip 11 can radially expand in a slip seat 12, one end of a positioning pin 13 is embedded into a positioning rail 20 on the lower central tube 10, a balance valve 4 is provided with sealing materials, and the balance valve 4 is in sealing fit with the lower central tube 10.
Working principle: the long and short rails of the tool have the effects that when the rail changing pin of the rail changing mechanism is arranged on the short rail, the slips and the cone cannot be contacted, the slips cannot be expanded and anchored on the sleeve, the rubber cylinder cannot be supported, the rubber cylinder cannot be expanded, and the packer is not set; when the rail changing pin of the rail changing mechanism is on a long rail, the slips and the cone can be contacted, the slips are expanded and anchored on the sleeve under the support of the cone, the rubber cylinder is compressed, and the packer is set.
When the tool is in the well, the rail changing mechanism is at the bottom dead center of the short rail. After the tool enters the sleeve, the friction block is compressed, and the positioning pins for positioning the friction block extend into the long and short tracks of the lower central tube. At the moment, the locating pin of the friction block and the rail changing pin of the rail changing mechanism are respectively clamped at two ends of the break point of the short rail, and the central tube is locked. At the moment, no matter the pipe column is lifted and lowered, the invention can not change the rail. When the invention passes through the target sleeve sliding sleeve and lifts upwards, the friction block can spring open at the catching groove of the sleeve sliding sleeve, the central tube is released, and the rail changing mechanism moves to the rail changing bottom dead center of the lower central tube; at this time, the pipe column is lowered again, the rail changing pin is changed from a short rail to a long rail, at this time, the slips are contacted with the cone, expanded and supported by the cone, the slips capture the opening groove of the sleeve sliding sleeve and are anchored on the inner sliding sleeve of the sleeve sliding sleeve, at this time, the cone and the lower cap are not moved, the upper joint, the upper central pipe, the balance valve, the connecting sleeve, the upper cap and the lower central pipe are integrally lowered, the rubber cylinder is compressed, and the rubber cylinder expands the packer to be set. And continuing to lower, under the action of gravity, the packer drives the sliding sleeve in the sleeve sliding sleeve to move downwards, and the sleeve sliding sleeve is opened. The fracturing operation may be performed directly at this point. When in deblocking, the pipe column is lifted up, the upper joint, the upper central pipe, the balance valve, the connecting sleeve, the upper cap and the lower central pipe are lifted up, the rubber cylinder is reset, and the packer is deblocked. Under the action of the limiting cap, the lower parallel cap and the cone move upwards, the slips, the slip seat and the groove body are fixed under the friction force of the friction block, the slips and the cone are separated and lose support, and the slips are retracted. The whole device is dragged away from the sleeve sliding sleeve to other sleeve sliding sleeve positions or to lift out of a wellhead.
When the sliding sleeve is closed, the invention is reversely arranged in the pipe column, the rail changing mechanism is used for descending a well in a short rail, the rail changing pin moves to a rail changing bottom dead center in the well descending process, and when the invention is lowered to a position below the sleeve sliding sleeve by a certain distance, the pipe column is lifted. The rail changing mechanism is changed to a long rail, the slip cone contacts, and the slip expands and catches on a closing groove of the sleeve pipe sliding sleeve to close the sliding sleeve. The pipe column is lowered to the lower part of the sliding sleeve, the rail changing mechanism is changed to a short rail in the process, the slip cone is not contacted and expanded, and the tool can be moved to other sliding sleeves or lifted to a wellhead.
In the embodiment, the tool is only one fuzzy distance above and below the sleeve sliding sleeve, so that the invention realizes fuzzy positioning and opening and closing of the sliding sleeve.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.

Claims (7)

1. An infinite-stage full-drift diameter switchable sleeve sliding sleeve switching packer for an oil field, which is characterized by comprising: the automatic feeding device comprises an upper joint (1), an upper central tube (2), a connecting sleeve (3), a balance valve (4), an upper parallel cap (5), a rubber sleeve (6), a lower parallel cap (7), a limit cap (8), a cone (9), a lower central tube (10), slips (11), a slip seat (12), a locating pin (13), a groove body (14), a friction block (24), a baffle ring (15), a lock cap (16), a rail changing mechanism (17) and a guiding lower joint (18), wherein the upper joint (1), the upper central tube (2) and the balance valve (4) are integrally connected through threads and are movably connected with the connecting sleeve (3), the upper parallel cap (5) and the lower central tube (10) are integrally connected through threads, and the lower parallel cap (7) and the cone (9) are integrally connected through threads, sleeved on the lower central tube (10) together and limit through the limit cap (8);
two long tracks (19), two short tracks (21) and two positioning tracks (20) are arranged on the lower central tube (10), and four track end point grooves are formed in one end of the lower central tube (10) and are staggered with the long tracks (19) and the short tracks (21) at a certain angle;
the friction block (24) is embedded in the groove body (14), two ends of the friction block (24) are fixed by baffle rings (15), the slip seat (12) and the groove body (14) are connected through threads, a positioning pin (13) is arranged in the slip seat (12), and the positioning pin (13) is embedded in a positioning track (20) on the lower central tube (10); the slips (11) are embedded in the slip seat (12) and are supported by springs;
the rail changing mechanism (17) comprises a swivel and a rail changing pin, the rail changing pin is arranged inside the swivel, the swivel is sleeved on the lower central tube (10), the outer layer of the swivel is wrapped by a locking cap (16), the locking cap (16) is connected with the groove body (14) through threads, and the guiding lower joint (18) is connected with the lower central tube (10) through threads.
2. The infinite stage full-path switchable sleeve sliding sleeve switching packer for the oil field according to claim 1 is characterized in that a sealing material is arranged on the balance valve (4), and the balance valve (4) is in sealing fit with the lower central tube (10).
3. An infinite stage full-path switchable sleeve sliding sleeve switching packer for oil fields according to claim 1 is characterized in that the total length of a long track (19) and a short track (21) on the lower central tube (10) is the same, and the middle of the short track (21) is divided into an upper part and a lower part by a break point.
4. The infinite stage full-path switchable sleeve sliding sleeve switching packer for the oil field according to claim 1, wherein the friction blocks (24) are divided into positioning friction blocks (24) and common friction blocks (24), the positioning friction blocks (24) are provided with bulges in the middle to serve as positioning pins, and springs are arranged inside the friction blocks (24) to support.
5. An oilfield infinite stage full path switchable sleeve sliding sleeve switching packer in accordance with claim 1 wherein the tank (14) is sleeved on the base pipe and slides up and down outside the base pipe.
6. An oilfield infinite stage full path switchable sleeve sliding sleeve switching packer according to claim 1, characterized in that the slips (11) have an angled conical surface at one end, the angle of the conical surface matches the angle of the cone (9), and the slips (11) are radially expandable in the slip bowl (12) after the slips (11) contact the cone (9).
7. An oilfield infinite stage full path switchable sleeve sliding sleeve switching packer according to claim 1, wherein one end of the locating pin (13) is embedded into a locating track (20) on the lower base pipe (10).
CN202210680846.9A 2022-06-16 2022-06-16 Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer Pending CN116556882A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210680846.9A CN116556882A (en) 2022-06-16 2022-06-16 Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210680846.9A CN116556882A (en) 2022-06-16 2022-06-16 Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer

Publications (1)

Publication Number Publication Date
CN116556882A true CN116556882A (en) 2023-08-08

Family

ID=87488559

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210680846.9A Pending CN116556882A (en) 2022-06-16 2022-06-16 Oil field is with infinitely variable full latus rectum switchable sleeve pipe sliding sleeve switch packer

Country Status (1)

Country Link
CN (1) CN116556882A (en)

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