CN110529073B - Soluble full-bore sliding sleeve based on intelligent control - Google Patents
Soluble full-bore sliding sleeve based on intelligent control Download PDFInfo
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- CN110529073B CN110529073B CN201910877882.2A CN201910877882A CN110529073B CN 110529073 B CN110529073 B CN 110529073B CN 201910877882 A CN201910877882 A CN 201910877882A CN 110529073 B CN110529073 B CN 110529073B
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- sliding sleeve
- fracturing
- seat
- right end
- left end
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B34/063—Valve or closure with destructible element, e.g. frangible disc
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses a soluble full-bore sliding sleeve based on intelligent control, which comprises an upper lifting short section, wherein the right end of the upper lifting short section is connected with the left end of an upper joint, the right end of the upper joint is connected with the left end of an outer sleeve, the right end of the outer sleeve is connected with the left end of a lower lifting short section, the right end of a lower inner sliding sleeve is attached to the left end surface of the lower lifting short section, the left end of the lower inner sliding sleeve is connected with the right end of a valve seat, the right ends of an electric outer barrel and an electric inner barrel are matched with the left end of the valve seat, the left end of the upper inner sliding sleeve is matched with the right end of the upper inner sliding sleeve, an electric support A is embedded in an annular space between the electric inner barrel and the electric outer barrel, the right end surface of a support. The invention has the characteristics of improving the operation efficiency, reducing the operation cost, facilitating the running of a subsequent production test tool and realizing infinite fracturing construction operation.
Description
Technical Field
The invention relates to the field of petroleum and natural gas development equipment, in particular to a soluble full-bore sliding sleeve based on intelligent control.
Background
With the continuous deepening of oil and gas exploration and development, large-scale fracturing modes such as horizontal well staged fracturing, volume fracturing and the like become main technologies for efficient development of oil and gas reservoirs. At present, the existing staged fracturing technologies mainly comprise an open hole packer + ball throwing sliding sleeve staged fracturing technology and a bridge plug + clustering perforation staged fracturing technology. At present, a bridge plug and clustering perforation staged fracturing technology is a main technology for shale gas reservoir reconstruction, and means that on the premise of effective communication between a shaft and a stratum, a perforating pipe string and a bridge plug/ball seat are conveyed to a target layer by using cable transmission to complete the combined operation of setting and multi-cluster perforation, and staged fracturing is carried out through a casing pipe at the later stage; before pumping the bridge plug, a first section of perforation operation is completed by a coiled tubing to establish a first section of fluid passage. The open hole packer and the ball throwing sliding sleeve are main technologies for modifying a low-permeability gas reservoir, and are used for utilizing an oil pipe as a well completion and fracturing pipe string to go down into an open hole horizontal section one time, effective packing between layers is realized through the open hole packer, and the sliding sleeve is opened step by throwing fracturing balls with different step differences through a wellhead to realize reasonable modification and effective construction of different layers.
During field construction operation, the bridge plug and clustering perforation staged fracturing technology has the problems that a long horizontal section continuous oil pipe is difficult to drill and grind the bridge plug, a well is difficult to open, the risk is high, the downward entering of the bridge plug is influenced after the trafficability in a sleeve becomes small, infinite fracturing cannot be realized and the like; the open hole packer and ball throwing sliding sleeve staged fracturing technology has the problems of limited ball seat grade difference, poor integrity of a shaft, difficulty in running of later-stage operation tools and the like, and the field construction progress is seriously influenced.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the soluble full-bore sliding sleeve based on intelligent control, which is convenient for the running-in of a subsequent production test tool, improves the operation efficiency, reduces the operation cost, and can realize infinite fracturing construction operation.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a soluble full latus rectum sliding sleeve based on intelligent control, it includes lift nipple joint, top connection, outer sleeve, goes up inner sliding sleeve, control module A, disk seat, shearing pin, soluble stopper, promotes nipple joint, lower inner sliding sleeve, opening valve, electric urceolus, electric support A, electric inner tube, supporting seat, fracturing ball seat and the supporting independent case that opens that uses.
The upper lifting short section right end is connected with the upper connector left end, the upper connector right end is connected with the outer sleeve left end, the outer sleeve right end is connected with the lower lifting short section left end, the lower inner sliding sleeve right end is laminated with the lower lifting short section left end face, the left end is connected with the right end of the valve seat, the electrical outer barrel and the electrical inner barrel right end are both matched with the valve seat left end, the left end is matched with the right end of the upper inner sliding sleeve, the electrical support A is embedded in an annular space between the electrical inner barrel and the electrical outer barrel, the support seat right end face is laminated with the left end face of the upper inner sliding sleeve, the fracturing ball seat right end face is laminated with the support seat left end face, the fracturing ball seat left end face is laminated with the upper connector right end face, the fracturing ball seat face is provided with a ball seat face.
The outer sleeve is provided with a plurality of pin holes A and a plurality of fracturing holes, soluble plugs are embedded in the fracturing holes, a plurality of pin holes B corresponding to the pin holes A are arranged on the lower inner sliding sleeve, and the lower inner sliding sleeve is fixed in the outer sleeve through shearing pins arranged in the pin holes A and the pin holes B and seals the fracturing holes.
Go up the inner sliding sleeve middle part and be provided with boss A, form cavity B between boss A, the top connection right-hand member face and the outer sleeve inner wall, the disk seat middle part is provided with boss B, forms cavity A between boss B, lower inner sliding sleeve outer wall and the outer sleeve inner wall.
The side face of the valve seat is provided with an opening valve mounting hole and a liquid passing hole A, the liquid passing hole A is communicated with the bottom of the opening valve mounting hole and the inside of the valve seat, the opening valve is mounted in the opening valve mounting hole, and the end face of the valve seat is provided with a line passing hole A communicated with the opening valve mounting hole.
The left side of the electric bracket A is embedded with a power supply module A, and the right side of the electric bracket A is embedded with a control module A; the power supply module A and the control module A are connected through a control line for the wire passing hole B, and the control module A is connected with the opening valve through a control line for the wire passing hole A.
The opening valve core is composed of a plug, a power supply module B, an electrical support B, a control module B and a valve body, wherein the electrical support B is embedded in the valve body, the power supply module B and the control module B are respectively embedded on the left side and the right side of the electrical support B and are connected through a wire passing hole C arranged on the electrical support B by a control wire, and the control module A can receive a command sent by the control module B to complete the action of breaking through a channel in the valve connected with the control module A through the control wire.
Furthermore, a sealing groove F is arranged on the upper lifting short section, and a sealing assembly F is arranged in the sealing groove F.
Further, go up and be provided with a plurality of seal grooves E on the inner sliding sleeve, seal groove E is equipped with seal assembly E, be provided with a plurality of seal grooves D on the boss A, seal groove D is equipped with seal assembly D.
Furthermore, a sealing groove C is formed in the valve seat, and a sealing assembly C is arranged in the sealing groove C.
Furthermore, a sealing groove A is arranged on the lower lifting short section, and a sealing assembly A is arranged in the sealing groove A.
Furthermore, a sealing groove B is arranged on the lower inner sliding sleeve, and a sealing assembly B is arranged in the sealing groove B.
Furthermore, the inner surface of the supporting seat is provided with an inner ratchet, the outer surface of the fracturing ball seat is provided with an outer ratchet, and the inner ratchet and the outer ratchet are matched after the fracturing ball seat is contracted and deformed along the radial direction.
Further, the inner surface of the supporting seat is provided with an arc-shaped surface.
Further, the fracturing ball seat surface is provided with the arc recess, and the surface is provided with a plurality of rectangular channels along the axis direction.
Furthermore, the supporting seat and the fracturing ball seat are made of magnesium-based alloy materials.
The invention has the following advantages:
after the fracturing ball seat is dissolved, the inner diameter of the soluble full-bore sliding sleeve is the same as that of the production casing, so that the full bore and integrity of a shaft are maintained, and a subsequent production test tool can be conveniently put in; the invention adopts a pre-programming mode, and by signal interaction between the opening valve core and the control module in the full-bore sliding sleeve, corresponding opening valve inner channels are electrified and punctured, and a liquid inlet channel between the inside of the sleeve and the air cavity is established, so that the mode is simple and reliable, and the opening success rate is high; according to the invention, one opening valve core is thrown to correspondingly open a plurality of sliding sleeves, so that the multi-layer reservoir transformation construction operation is realized, and the shale gas fracturing construction requirement is well met; the soluble plug is embedded in the position of the fracturing hole of the outer sleeve, so that the problem that well cementation cement enters a gap between the inner sliding sleeve and the outer valve body in the well cementation operation process is solved, and the opening success rate of the full-bore sliding sleeve is improved; overall, the efficiency of operation has been improved, has reduced the operating cost, has realized unlimited level fracturing construction operation.
Drawings
FIG. 1 is a schematic diagram of a string of well tubulars;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic diagram of a ball seat generated after the open valve is broken;
FIG. 4 is a schematic structural view of an opening valve core;
FIG. 5 is a schematic view of the outer sleeve;
FIG. 6 is a schematic view showing the location of the electrical stand A;
FIG. 7 is a schematic view of a valve seat;
FIG. 8 is a schematic structural view of the upper and inner sliding sleeves;
FIG. 9 is a schematic structural view of the lower inner sliding sleeve;
FIG. 10 is a schematic diagram of a fracturing ball seat;
FIG. 11 is a schematic view of a support base;
in the figure: 1-upper lifting short section, 2-upper joint, 3-outer sleeve, 301-pin hole A, 302-fracturing hole, 4-upper inner sliding sleeve, 401-sealing groove, 402-sealing groove D, 403-boss A, 5-power module A, 6-control module A, 7-valve seat, 701-line passing hole A, 702-sealing groove C, 703-boss B, 704-opening valve mounting hole, 705-liquid inlet hole, 8-shearing pin, 9-soluble plug, 10-lower lifting short section, 11-sealing component A, 12-lower inner sliding sleeve, 1201-sealing groove B, 1202-pin hole B, 13-sealing component B, 14-cavity A, 15-opening valve, 16-sealing component C, 17-electric outer barrel, 18-electrical support A, 1801-wire passing hole B, 19-electrical inner barrel, 20-sealing assembly D, 21-cavity B, 22-sealing assembly E, 23-supporting seat, 24-fracturing ball seat, 25-sealing assembly F, 26-production sleeve, 27-opening valve core, 2701-plug, 2702-power module B, 2703-electrical support B, 2704-control module B, 2705-valve body and 28-soluble full-diameter sliding sleeve.
Detailed Description
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 2-11, a soluble full-bore sliding sleeve based on intelligent control comprises an upper lifting short section 1, an upper joint 2, an outer sleeve 3, an upper inner sliding sleeve 4, a control module a6, a valve seat 7, a shearing pin 8, a soluble plug 9, a lower lifting short section 10, a lower inner sliding sleeve 12, an opening valve 15, an electric outer cylinder 17, an electric support a18, an electric inner cylinder 19, a supporting seat 23, a fracturing ball seat 24 and an independent opening valve core matched with the supporting use.
The right end of the upper lifting short section 1 is connected with the left end of the upper joint 2, the right end of the upper joint 2 is connected with the left end of the outer sleeve 3, the right end of the outer sleeve 3 is connected with the left end of the lower lifting short section 10, and preferably, the connection modes between the upper lifting short section 1 and the upper joint 2, between the upper joint 2 and the outer sleeve 3 and between the outer sleeve 3 and the lower lifting short section 10 are all threaded; the right end of the lower inner sliding sleeve 12 is attached to the left end face of the lower lifting short section 10, the left end of the lower inner sliding sleeve is connected with the right end of the valve seat 7, and preferably, the connection mode adopts threaded connection; the right ends of the electric outer barrel 17 and the electric inner barrel 19 are matched with the left end of the valve seat 7, the left end of the electric outer barrel 17 is matched with the right end of the upper inner sliding sleeve 4, the electric support A18 is embedded in an annular space between the electric inner barrel 19 and the electric outer barrel 17, the right end face of the supporting seat 23 is attached to the left end face of the upper inner sliding sleeve 4, the right end face of the fracturing ball seat 24 is attached to the left end face of the supporting seat 23, the left end face of the fracturing ball seat 24 is attached to the right end face of the upper connector 2, a ball seat face 2403 is arranged on the inner surface of the fracturing ball seat 24, and a plugging position is.
The outer sleeve 3 is provided with a plurality of pin holes A301 and a plurality of fracturing holes 302, in order to ensure that the fracturing holes 302 are not influenced by well cement, a soluble plug 9 is embedded in the fracturing holes 302, the lower inner sliding sleeve 12 is provided with a plurality of pin holes B1202 corresponding to the pin holes A301, and the lower inner sliding sleeve 12 is fixed inside the outer sleeve 3 through shear pins 8 installed in the pin holes A301 and the pin holes B1202 and seals the fracturing holes 302.
Preferably, the number of the pin holes a301 and the pin holes B1202 is 2, and the pin holes a301 and the pin holes B1202 are uniformly distributed at 180 degrees; the number of the fracturing holes 302 is 8, and the fracturing holes are uniformly distributed at 45 degrees.
A boss A403 is arranged in the middle of the upper inner sliding sleeve 4, a cavity B21 is formed among the boss A403, the right end face of the upper joint 2 and the inner wall of the outer sleeve 3, a boss B703 is arranged in the middle of the valve seat 7, and a cavity A14 is formed among the boss B703, the outer wall of the lower inner sliding sleeve 12 and the inner wall of the outer sleeve 3.
An opening valve mounting hole 704 and a liquid passing hole A705 are formed in the side face of the valve seat 7, the liquid passing hole A705 is communicated with the bottom of the opening valve mounting hole 704 and the inside of the valve seat 7, the opening valve 15 is mounted in the opening valve mounting hole 704, and a line passing hole A701 communicated with the opening valve mounting hole 704 is formed in the end face of the valve seat 7.
The left side of the electric bracket A18 is embedded with a power supply module A5, and the right side is embedded with a control module A6; the power supply module A5 and the control module A6 are connected by a control line through a wire through hole B1801, and the control module A6 is connected with the opening valve 15 by a control line through a wire through hole A701.
The opening valve core 27 is composed of a plug 2701, a power module B2702, an electric support B2703, a control module B2704 and a valve body 2705, the electric support B2703 is embedded inside the valve body 2705, the power module B2702 and the control module B2704 are respectively embedded on the left side and the right side of the electric support B2703 and are connected by a control line through a wire passing hole C arranged on the electric support B2703, and the control module a6 can receive a command sent by the control module B2704 to complete the action of breaking through a channel in the opening valve 15 connected with the control module a6 through the control line.
Preferably, a sealing groove F is arranged on the upper lifting short joint 1, and a sealing assembly F25 is arranged in the sealing groove F; preferably, the number of the sealing grooves F is 2, and the sealing assembly F25 may be an O-ring.
Preferably, a plurality of sealing grooves E401 are arranged on the upper inner sliding sleeve 4, a sealing assembly E22 is installed in the sealing groove E401, a plurality of sealing grooves D402 are arranged on the boss a403, and a sealing assembly D20 is installed in the sealing groove D402; preferably, the number of the sealing grooves E401 and D402 is 2, and the sealing assemblies E22 and D20 may be O-ring seals.
Preferably, a seal groove C702 is arranged on the valve seat 7, and a seal assembly C16 is installed in the seal groove C702; preferably, the number of seal grooves C702 is 2, and the seal assembly C16 may be an O-ring seal.
Preferably, a sealing groove a is arranged on the lower lifting sub 10, and a sealing assembly a11 is arranged in the sealing groove a; preferably, the number of the seal grooves a is 2, and the seal assembly a11 may be an O-ring.
Preferably, a sealing groove B1201 is arranged on the lower inner sliding sleeve 12, and a sealing assembly B13 is installed in the sealing groove B1201; preferably, the number of the seal grooves B1201 is 4, and the seal assembly B13 may be an O-ring.
Preferably, the inner surface of the support seat 23 is provided with inner ratchet teeth 2302, the outer surface of the fracturing ball seat 24 is provided with outer ratchet teeth 2402, and after the fracturing ball seat 24 is contracted and deformed in the radial direction, the inner ratchet teeth 2302 and the outer ratchet teeth 2402 form a fit to prevent the fracturing ball seat 24 from rebounding.
Preferably, in order to facilitate the relative movement of the fracturing ball seat 24 and the support seat 23, the inner surface of the support seat 23 is provided with an arc-shaped surface 2301.
Preferably, the outer surface of the fracturing ball seat 24 is provided with an arc-shaped groove 2401, and when the fracturing ball seat 24 contracts and deforms along the radial direction, the arc-shaped groove 2401 can effectively reduce stress concentration; the outer surface of the fracturing ball seat 24 is provided with a plurality of rectangular grooves 2404 along the axial direction, and preferably, the number of the rectangular grooves 2404 is 4, so that a larger contraction deformation space is provided for the fracturing ball seat 24.
Preferably, the supporting seat 23 and the fracturing ball seat 24 are made of magnesium-based alloy materials, so that the elastic deformation requirement can be met, and meanwhile, the rapid dissolution can be realized in the later stage.
The using process of the invention is as follows: before construction, codes of control modules A6 in different soluble full-bore sliding sleeves 28 are compiled one by one, and codes of control modules B2704 in the opening valve core 27 matched with the codes are compiled; during construction operation, a plurality of soluble full-bore sliding sleeves 28 and the production casing 26 are connected end to end and enter a well (as shown in figure 1), and well cementation operation is completed; during the starting operation, the starting valve core 27 is put into the production casing 26 at the well head, the starting valve core 27 is slowly sent to the position of the first soluble full-bore sliding sleeve 28 by a pump, after control module a6 in soluble full bore slide 28 receives a command from control module B2704 in the opening spool 27, the action of breaking through the passage in the opening valve 15 is completed, at which time high-pressure fluid is continuously pumped into the production casing 26 by the pump, the fluid enters the cavity a14 through the liquid inlet hole 705 and the opening valve 15, since the fluid pressure in the cavity a is greater than that in the cavity B21, the fluid will push the upper inner sliding sleeve 4, the electric inner barrel 19, the electric outer barrel 17, the valve seat 7 and the lower inner sliding sleeve 12 to move leftward together, when the cavity a14 is completely closed, namely, when the left end face of the upper inner sliding sleeve 4 moves to be attached to the right end face of the upper lifting short section 1, the movement is stopped, the fracturing hole 302 is exposed, and a fluid channel between the interior of the production casing 26 and the stratum is established; meanwhile, the upper inner sliding sleeve 4 pushes the supporting seat 23 to move leftwards, the fracturing ball seat 24 shrinks inwards under the extrusion action of the supporting seat 23 to form a ball seat, and then a matched soluble fracturing ball is put into a wellhead to complete the reservoir transformation construction of the interval according to a pre-designed program. And then, successively throwing the opening valve cores 27 with different codes through the well mouth, and opening the corresponding soluble full-bore sliding sleeves 28 until the reservoir transformation construction operation of the whole well is completed.
Claims (10)
1. The utility model provides a soluble full latus rectum sliding sleeve based on intelligent control which characterized in that: the fracturing oil well fracturing valve comprises an upper lifting short section (1), an upper joint (2), an outer sleeve (3), an upper inner sliding sleeve (4), a control module A (6), a valve seat (7), a shearing pin (8), a soluble plug (9), a lower lifting short section (10), a lower inner sliding sleeve (12), an opening valve (15), an electric outer cylinder (17), an electric support A (18), an electric inner cylinder (19), a supporting seat (23), a fracturing ball seat (24) and an independent opening valve core (27) which is matched for use;
the right end of the upper lifting short section (1) is connected with the left end of the upper connector (2), the right end of the upper connector (2) is connected with the left end of the outer sleeve (3), the right end of the outer sleeve (3) is connected with the left end of the lower lifting short section (10), the right end of the lower inner sliding sleeve (12) is attached to the left end face of the lower lifting short section (10), the left end of the lower inner sliding sleeve is connected with the right end of the valve seat (7), the right ends of the electrical outer cylinder (17) and the electrical inner cylinder (19) are both matched with the left end of the valve seat (7), the left end of the lower inner sliding sleeve is matched with the right end of the upper inner sliding sleeve (4), the electrical support A (18) is embedded in an annular space between the electrical inner cylinder (19) and the electrical outer cylinder (17), the right end face of the support seat (23) is attached to the left end face of the upper inner sliding sleeve (4), the right end face of the fracturing ball seat (, a ball seat surface (2403) is arranged on the inner surface of the fracturing ball seat (24), and the ball seat surface (2403) provides a plugging position for the throwing of a soluble fracturing ball at the later stage;
the outer sleeve (3) is provided with a plurality of pin holes A (301) and a plurality of fracturing holes (302), a soluble plug (9) is embedded in each fracturing hole (302), the lower inner sliding sleeve (12) is provided with a plurality of pin holes B (1202) corresponding to the pin holes A (301), and the lower inner sliding sleeve (12) is fixed in the outer sleeve (3) through shearing pins (8) arranged in the pin holes A (301) and the pin holes B (1202) and seals the fracturing holes (302);
a boss A (403) is arranged in the middle of the upper inner sliding sleeve (4), a cavity B (21) is formed among the boss A (403), the right end face of the upper joint (2) and the inner wall of the outer sleeve (3), a boss B (703) is arranged in the middle of the valve seat (7), and a cavity A (14) is formed among the boss B (703), the outer wall of the lower inner sliding sleeve (12) and the inner wall of the outer sleeve (3);
an opening valve mounting hole (704) and a liquid passing hole A (705) are formed in the side face of the valve seat (7), the liquid passing hole A (705) is communicated with the bottom of the opening valve mounting hole (704) and the interior of the valve seat (7), the opening valve (15) is mounted in the opening valve mounting hole (704), and a line passing hole A (701) communicated with the opening valve mounting hole (704) is formed in the end face of the valve seat (7);
the left side of the electric bracket A (18) is embedded with a power supply module A (5), and the right side is embedded with a control module A (6); the power supply module A (5) and the control module A (6) are connected through a wire passing hole B (1801) by a control wire, and the control module A (6) is connected with the opening valve (15) through a wire passing hole A (701) by a control wire;
the starting valve core (27) is composed of a plug (2701), a power module B (2702), an electric support B (2703), a control module B (2704) and a valve body (2705), the electric support B (2703) is embedded in the valve body (2705), the power module B (2702) and the control module B (2704) are respectively embedded on the left side and the right side of the electric support B (2703) and are connected through a control line through a line passing hole C arranged on the electric support B (2703), and the control module A (6) can receive a command sent by the control module B (2704) to break down a channel in a starting valve (15) connected with the control module A (6) through the control line.
2. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: a sealing groove F is formed in the upper lifting nipple (1), and a sealing assembly F (25) is arranged in the sealing groove F.
3. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: the upper inner sliding sleeve (4) is provided with a plurality of sealing grooves E (401), sealing assemblies E (22) are installed in the sealing grooves E (401), a plurality of sealing grooves D (402) are arranged on the boss A (403), and sealing assemblies D (20) are installed in the sealing grooves D (402).
4. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: a seal groove C (702) is formed in the valve seat (7), and a seal assembly C (16) is arranged in the seal groove C (702).
5. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: a sealing groove A is formed in the lower lifting short section (10), and a sealing assembly A (11) is arranged in the sealing groove A.
6. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: and a sealing groove B (1201) is arranged on the lower inner sliding sleeve (12), and a sealing assembly B (13) is arranged in the sealing groove B (1201).
7. The soluble full-bore sliding sleeve based on intelligent control according to claim 1, characterized in that: an inner ratchet tooth (2302) is arranged on the inner surface of the supporting seat (23), an outer ratchet tooth (2402) is arranged on the outer surface of the fracturing ball seat (24), and the inner ratchet tooth (2302) is matched with the outer ratchet tooth (2402) after the fracturing ball seat (24) contracts and deforms along the radial direction.
8. The soluble full-bore sliding sleeve based on intelligent control according to claim 1 or 7, characterized in that: the inner surface of the supporting seat (23) is provided with an arc-shaped surface (2301).
9. The soluble full-bore sliding sleeve based on intelligent control according to claim 1 or 7, characterized in that: the outer surface of the fracturing ball seat (24) is provided with an arc-shaped groove (2401), and the outer surface is provided with a plurality of rectangular grooves (2404) along the axis direction.
10. The soluble full-bore sliding sleeve based on intelligent control according to claim 1 or 7, characterized in that: the supporting seat (23) and the fracturing ball seat (24) are made of magnesium-based alloy materials.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910877882.2A CN110529073B (en) | 2019-09-17 | 2019-09-17 | Soluble full-bore sliding sleeve based on intelligent control |
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| CN201910877882.2A CN110529073B (en) | 2019-09-17 | 2019-09-17 | Soluble full-bore sliding sleeve based on intelligent control |
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| CN110529073A CN110529073A (en) | 2019-12-03 |
| CN110529073B true CN110529073B (en) | 2020-03-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110529073B (en) * | 2019-09-17 | 2020-03-27 | 中国石油天然气股份有限公司西南油气田分公司工程技术研究院 | Soluble full-bore sliding sleeve based on intelligent control |
| CN111425148B (en) * | 2020-05-15 | 2023-08-22 | 中国石油化工股份有限公司 | Casing pipe column applying toe end sliding sleeve to full-diameter sliding sleeve and application method thereof |
| AU2021286694A1 (en) | 2020-06-12 | 2023-01-19 | China Petroleum & Chemical Corporation | Sliding sleeve device |
| CN112049606B (en) * | 2020-09-30 | 2024-02-06 | 中国石油天然气集团有限公司 | Time-delay opening toe end sliding sleeve and opening method thereof |
| CN113356794B (en) * | 2021-06-04 | 2021-12-07 | 西南石油大学 | Full-diameter infinite-grade intelligent switch sliding sleeve |
| CN114517660A (en) * | 2022-02-28 | 2022-05-20 | 哈尔滨艾拓普科技有限公司 | Full-bore infinite staged fracturing sliding sleeve based on intelligent label control and implementation method |
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Effective date of registration: 20200911 Address after: 100010 Intercontinental University, No.16 ande Road, Dongcheng District, Beijing Co-patentee after: SICHUAN SHENGNUO OIL AND GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. Patentee after: PetroChina Co.,Ltd. Address before: 618300 south section 3, Zhongshan Avenue, Guanghan City, Deyang City, Sichuan Province Co-patentee before: SICHUAN SHENGNUO OIL AND GAS ENGINEERING TECHNOLOGY SERVICE Co.,Ltd. Patentee before: CHINA NATIONAL PETROLEUM CORPORATION, SOUTHWEST OIL & GASFIELD BRANCH, ENGINEERING TECHNOLOGY Research Institute |