CN203239310U - Unlimited-section fracture casing pipe sliding sleeve - Google Patents

Unlimited-section fracture casing pipe sliding sleeve Download PDF

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Publication number
CN203239310U
CN203239310U CN 201320162929 CN201320162929U CN203239310U CN 203239310 U CN203239310 U CN 203239310U CN 201320162929 CN201320162929 CN 201320162929 CN 201320162929 U CN201320162929 U CN 201320162929U CN 203239310 U CN203239310 U CN 203239310U
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CN
China
Prior art keywords
fairlead
wall
sliding sleeve
sealing ring
central tube
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.)
Expired - Fee Related
Application number
CN 201320162929
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Chinese (zh)
Inventor
任国富
王在强
桂捷
姜勇
邵媛
任勇
蒙鑫
刘汉斌
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China Petroleum and Natural Gas Co Ltd
Original Assignee
China Petroleum and Natural Gas Co Ltd
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Filing date
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Application filed by China Petroleum and Natural Gas Co Ltd filed Critical China Petroleum and Natural Gas Co Ltd
Priority to CN 201320162929 priority Critical patent/CN203239310U/en
Application granted granted Critical
Publication of CN203239310U publication Critical patent/CN203239310U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an unlimited-section fracture casing pipe sliding sleeve, which is designed to realize the unlimited-section fracture and controllable recovery of a cased well. The top end of a center pipe of the casing pipe sliding sleeve is connected with a fracture casing pipe, the reducing pipe wall of the center pipe is provided with upper fluid inlet holes, sandblast holes and lower fluid inlet holes, the upper and lower ends of the reducing outer wall of the center pipe are respectively connected with an upper guide sleeve and a lower guide sleeve, the inner wall of an outer barrel is provided with a circumferential step, the wall of the outer barrel is provided with pins and fracture ports, the upper and lower ends of the inner wall of the outer barrel are respectively connected with the upper guide sleeve and the lower guide sleeve, and a piston which is sleeved on the center pipe and fixed by the pins is arranged between the reducing outer wall of the center wall and the expanding inner wall of the outer barrel. During construction, internal pressure change of the casing pipe is used for pushing the piston to move, repeated opening and closing of the casing pipe sliding sleeve are realized, and accordingly, unlimited-section fracture section by section and selective recovery of the cased well are realized. A shaft after fracture can keep full drift diameter, and latter operation of oil/gas wells is facilitated. The casing pipe sliding sleeve tool is simple in structure and high in reliability.

Description

Do not limit the sliding sleeve of bushing of hop count pressure break
Technical field
The utility model relates to a kind of sliding sleeve of bushing of not limitting the hop count pressure break, belongs to well fracturing rebuilding construction technical field.
Background technology
At present, the opening ways of oil field at home pressure break sliding sleeve of bushing is mainly pitching and opens, i.e. pitching also is pumped into the ball seat place, improves pressure and cuts off pin, opens sliding sleeve.Because the steel ball size that drops into successively will increase step by step, therefore limited by caliber, can only finish the fracturing reform of limited hop count.Though the restriction that the fracturing sliding bush of existing unlimited hop count is increased by steel ball no longer step by step, this downhole tool complex structure, reliability is still waiting to improve.
Summary of the invention
The purpose of this utility model is to provide a kind of sliding sleeve of bushing of not limitting the hop count pressure break, and it can realize that cased well do not limit the pressure break of hop count, in the oil gas well mining process, can repeatedly open and close.
Concrete technology contents of the present utility model is as follows:
The step-like central tube of this sliding sleeve of bushing top connects the pressure break sleeve pipe; Central tube undergauge tube wall is provided with inlet opening, sandblast hole and lower inlet opening, and central tube undergauge outer wall upper and lower end connects respectively fairlead and lower fairlead; Outer tube inner wall is provided with circumferential step, and the urceolus barrel is provided with pin and pressure break port, and the outer tube inner wall upper and lower end connects respectively fairlead and lower fairlead; Be provided with between central tube undergauge outer wall and urceolus hole enlargement inwall suit on the central tube, by the fixing piston of pin.
Central tube and upper fairlead fitting face are provided with the first sealing ring, are provided with the 8th sealing ring with lower fairlead fitting face; Urceolus and upper fairlead fitting face are provided with the second sealing ring, are provided with the 7th sealing ring with lower fairlead fitting face; Piston and central tube fitting face are provided with the 4th sealing ring and the 6th sealing ring that is positioned at sandblast hole upper and lower, are provided with the 3rd sealing ring and the 5th sealing ring that is positioned at pressure break port upper and lower with the urceolus fitting face.
The utility model does not limit the sliding sleeve of bushing of hop count pressure break can realize that cased well do not limit staged fracturing and the selective exploitation of hop count, and post-fracturing pit shaft keeps full-bore, is particularly conducive to the later stage operation of Oil/gas Well.This sliding sleeve of bushing tool construction is simple, and reliability is high.
Description of drawings
Fig. 1 is not for limitting the sliding sleeve of bushing structural representation of hop count pressure break.
The sliding sleeve of bushing schematic diagram of not limitting hop count pressure break when Fig. 2 is pressure break.
Fig. 3 is running string schematic diagram in the time of need to closing the utility model sliding sleeve of bushing.
The specific embodiment
Embodiment:
Further specify referring to figs. 1 through 3 pairs of the utility model:
This sliding sleeve of bushing comprises central tube 1, upper fairlead 2, urceolus 3, the first sealing ring 4, the second sealing ring 5, pin 6, the 3rd sealing ring 7, the 4th sealing ring 8, piston 9, the 5th sealing ring 10, the 6th sealing ring 11, the 7th sealing ring 12, the 8th sealing ring 13 and lower fairlead 17:
The step-like central tube 1 top pressure break sleeve pipe that is threaded, central tube 1 undergauge tube wall top are provided with four upper inlet openings 14 and ten circumferential sandblast uniform, bar shaped holes 15, and the upper fairlead 2 that is threaded; Central tube 1 undergauge tube wall bottom is provided with four lower inlet openings 16, and the lower fairlead 17 that is threaded; Urceolus 3 inwalls are provided with circumferential step, and urceolus 3 barrel tops are provided with four pins 6 and ten circumferential uniform pressure break port ones 8, urceolus 3 inwall upper and lower ends be threaded respectively upper fairlead 2 and lower fairlead 17; Be provided with between central tube 1 undergauge outer wall and urceolus 3 hole enlargement inwalls suit central tube 1, by the fixing piston 9 of pin 6.
Central tube 1 is provided with the first sealing ring 4 with upper fairlead 2 fitting faces, is provided with the 8th sealing ring 13 with lower fairlead 17 fitting faces; Urceolus 3 is provided with the second sealing ring 5 with upper fairlead 2 fitting faces, is provided with the 7th sealing ring 12 with lower fairlead 17 fitting faces; Piston 9 is provided with the 4th sealing ring 8 and the 6th sealing ring 11 that is positioned at sandblast hole 15 upper and lower ends with central tube 1 fitting face, is provided with the 3rd sealing ring 7 and the 5th sealing ring 10 that is positioned at pressure break port one 8 upper and lower ends with urceolus 3 fitting faces.
During construction, the pressure break sleeve pipe connects behind a plurality of the sliding sleeve of bushings down to Oil/gas Well respective layer position, well cementing of cement.Before the pressure break, coiled tubing 22 connects successively sandblaster 23, isolating tool 20 and locator 19 from top to bottom and is lowered in the well, after the locator 19 calibration degree of depth, make isolating tool set a certain position of 16 of on corresponding this sliding sleeve of bushing inlet openings 14 and lower inlet opening.The annular space liquid flowing valve is closed on ground, and coiled tubing small displacement infusion slowly raises the pressure in the isolating tool upper sleeve, and highly pressurised liquid arrives piston 9 tops through upper inlet opening 14.Can according to actual requirement, adjust by the pin 6 of replacing unlike material or the quantity of conversion pin 6 when pressure is elevated to the concrete numerical value of 20MPa() time, hydraulic drive piston 9 is cut off pin 6, moves down.When contacting urceolus 3 inwall step, piston 9 stops to move down, the pressure break port one 8 that sandblast hole 15 is communicated with on the urceolus 3, and highly pressurised liquid is broken through the cementing concrete ring of pressure break sliding sleeve of bushing periphery, enters the stratum.At this moment, coiled tubing infusion pressure can reduce, and the annular space liquid flowing valve is opened on ground, and coiled tubing and oil jacket annular space be infusion simultaneously, implements the pressure break of the corresponding interval of this sliding sleeve of bushing.After pressure break was finished, the isolating tool deblocking was carried isolating tool on the coiled tubing, set on the upper sliding sleeve of bushing between inlet opening 14 and the lower inlet opening 16.Repeat above step, finish the staged fracturing of all intervals, beginning discharge opeing production.
In process of production, if find a certain interval water outlet, then with coiled tubing 22 from top to bottom successively connecting positioner 19, isolating tool 20 and plug with holes 21, again be lowered into corresponding pressure break sliding sleeve of bushing place.Isolating tool sets a certain position of 16 of on sliding sleeve of bushing inlet openings 14 and lower inlet opening, the coiled tubing infusion, the with holes plug ejection of liquid below isolating tool, make that the cover overpressure raises below the isolating tool, highly pressurised liquid arrives pistons 9 belows by lower inlet opening 16, and pushing piston 9 moves up, make sandblast hole 15 and 8 isolation of pressure break port one, close sliding sleeve of bushing, thereby stop the stratum water outlet, realize selectively exploitation.

Claims (3)

1. sliding sleeve of bushing of not limitting the hop count pressure break is characterized in that:
The step-like central tube of this sliding sleeve of bushing (1) top connects the pressure break sleeve pipe; Central tube (1) undergauge tube wall is provided with inlet opening (14), sandblast hole (15) and lower inlet opening (16), and central tube (1) undergauge outer wall upper and lower end connects respectively fairlead (2) and lower fairlead (17); Urceolus (3) inwall is provided with circumferential step, and urceolus (3) barrel is provided with pin (6) and pressure break port (18), and urceolus (3) inwall upper and lower end connects respectively fairlead (2) and lower fairlead (17); Be provided with between central tube (1) undergauge outer wall and urceolus (3) hole enlargement inwall on suit central tube (1), by the fixing piston (9) of pin (6);
Central tube (1) is provided with the first sealing ring (4) with upper fairlead (2) fitting face, is provided with the 8th sealing ring (13) with lower fairlead (17) fitting face; Urceolus (3) is provided with the second sealing ring (5) with upper fairlead (2) fitting face, is provided with the 7th sealing ring (12) with lower fairlead (17) fitting face; Piston (9) is provided with the 4th sealing ring (8) and the 6th sealing ring (11) that is positioned at sandblast hole (15) upper and lower with central tube (1) fitting face, is provided with the 3rd sealing ring (7) and the 5th sealing ring (10) that is positioned at pressure break port (18) upper and lower with urceolus (3) fitting face.
2. the sliding sleeve of bushing of not limitting the hop count pressure break according to claim 1, it is characterized in that central tube (1) the top pressure break sleeve pipe that is threaded, central tube (1) top is provided with inlet opening (14) and ten sandblast holes (15) on circumferential uniform four, and the upper fairlead (2) that is threaded; Central tube (1) bottom is provided with four lower inlet openings (16), and the lower fairlead (17) that is threaded.
3. the sliding sleeve of bushing of not limitting the hop count pressure break according to claim 1, it is characterized in that urceolus (3) barrel top is provided with circumferentially uniform four pins (6) and ten pressure break ports (18), urceolus (3) inwall upper and lower end be threaded respectively upper fairlead (2) and lower fairlead (17).
CN 201320162929 2013-04-03 2013-04-03 Unlimited-section fracture casing pipe sliding sleeve Expired - Fee Related CN203239310U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320162929 CN203239310U (en) 2013-04-03 2013-04-03 Unlimited-section fracture casing pipe sliding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320162929 CN203239310U (en) 2013-04-03 2013-04-03 Unlimited-section fracture casing pipe sliding sleeve

Publications (1)

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CN203239310U true CN203239310U (en) 2013-10-16

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088614A (en) * 2014-06-30 2014-10-08 中国石油集团川庆钻探工程有限公司 Excitation type differential pressure sliding sleeve
CN104100249A (en) * 2013-04-03 2014-10-15 中国石油天然气股份有限公司 Sleeve pipe slide sleeve for stage-limitation-free fracturing
CN104234684A (en) * 2014-09-15 2014-12-24 能新科(西安)油气技术有限公司 Pressure-controlled opening type fracturing sliding sleeve
CN109931037A (en) * 2019-04-11 2019-06-25 王淑华 Self adaptive control screen casing and method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104100249A (en) * 2013-04-03 2014-10-15 中国石油天然气股份有限公司 Sleeve pipe slide sleeve for stage-limitation-free fracturing
CN104100249B (en) * 2013-04-03 2016-06-15 中国石油天然气股份有限公司 Do not limit the sliding sleeve of bushing of hop count pressure break
CN104088614A (en) * 2014-06-30 2014-10-08 中国石油集团川庆钻探工程有限公司 Excitation type differential pressure sliding sleeve
CN104234684A (en) * 2014-09-15 2014-12-24 能新科(西安)油气技术有限公司 Pressure-controlled opening type fracturing sliding sleeve
CN109931037A (en) * 2019-04-11 2019-06-25 王淑华 Self adaptive control screen casing and method
CN109931037B (en) * 2019-04-11 2023-12-15 王淑华 Self-adaptive control screen pipe and method

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131016

Termination date: 20210403