CN104213892A - Openable and closable fracture sliding sleeve - Google Patents

Openable and closable fracture sliding sleeve Download PDF

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Publication number
CN104213892A
CN104213892A CN201310219991.8A CN201310219991A CN104213892A CN 104213892 A CN104213892 A CN 104213892A CN 201310219991 A CN201310219991 A CN 201310219991A CN 104213892 A CN104213892 A CN 104213892A
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CN
China
Prior art keywords
sliding sleeve
shear pin
sleeve
ball seat
sliding
Prior art date
Application number
CN201310219991.8A
Other languages
Chinese (zh)
Inventor
张东亭
葛党科
张胜传
董建华
袁照永
关月
王小月
郑淑杰
Original Assignee
中国石油天然气股份有限公司
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 中国石油天然气股份有限公司 filed Critical 中国石油天然气股份有限公司
Priority to CN201310219991.8A priority Critical patent/CN104213892A/en
Publication of CN104213892A publication Critical patent/CN104213892A/en

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Abstract

The invention relates to an openable and closable fracture sliding sleeve which comprises a body (1), a sliding sleeve (2), a shear pin (4), a cylinder sleeve (5), an anti-rotation key (6), a ball seat (7), a locking ring (8), a shear pin I (9), a control cover (10) and a lower connector (12). The body (1), the cylinder sleeve (5) and the lower connector (12) are in threaded connection in sequence. The upper end of the sliding sleeve (2) is inserted in the lower portion of an inner hole of the body (1) and fixedly connected with the body (1) through the shear pin (4), the sliding sleeve (2) is in threaded connection with the ball seat (7), and an outer reducing shaft at the lower portion of the sliding sleeve (2) is fixedly sleeved with the locking ring (8) and the control cover (10). A channel (3) is formed in the upper portion of the body, a convex-surface thread (11) is arranged at the lower end of the cylinder cover (5), and the anti-rotation key (6) is arranged in a rectangular groove of the body (1) and a long radial groove of the sliding sleeve (2). By means of range matching of a ball and the ball seat, multi-section fracture can be achieved at one time.

Description

Switch fracturing sliding bush
Technical field
The present invention relates to a kind of Oil/gas Well down-hole multistage pressure break sanding apparatus, particularly a kind of hydraulic pressure opening, the unlatching of Mechanical course or closedown fracturing sliding bush.
Background technology
At present, horizontal well has become the important channel of improving In Oil Field Exploration And Development comprehensive benefit, and each oil field is widely used at home.Not reaching in the high angle hole of low porosity and low permeability oil-gas reservoir, horizontal well and output the complex structural well that economic development requires for boring to meet, the problem of DH measure storey increase design must be faced.The focus that fractured horizontal well transformation and vertical well fracture are transformed is different, complex process, and downhole tool performance requirement is high, and construction mostly is disposable, has a big risk.Current each water of oil-gas field horizontal well multistage fracturing reform generally adopts oil reservoir specially to beat technology and hanging packer, sliding sleeve, open hole packer and kit and realizes multistage fracturing technique or well cementation sliding sleeve and kit and carry out well cementation and realize multistage fracturing technique.Utilizing in well head pitching technology tubing string builds the pressure opens the corresponding sliding sleeve in down-hole successively pressing crack construction, can go into operation by open flow after construction terminates.Because reservoir mostly is heterogeneous body, edge-bottom water oil reservoir, produce a period of time moisture rising, serious meeting waterflooded reservoir, affects other interval, cannot carry out shutoff again to water exit interval, causes full well stopping production closing well.How to realize water exit interval shutoff, adopt routine work means to be closed by the sliding sleeve in down-hole string, realizing that oil well normally produces is the technical barrier being badly in need of tackling key problem.
Summary of the invention
For the defect that above-mentioned prior art exists, the technical problem to be solved in the present invention is to provide a kind of switch fracturing sliding bush, and pressing crack construction is complete, finds certain interval water outlet in process of production, ball and ball seat are bored after removing, routine work technique can be adopted to close the sliding sleeve of corresponding interval.
For solving the problems of the technologies described above, switch fracturing sliding bush of the present invention, be made up of body 1, sliding sleeve 2, shear pin 4, cylinder sleeve 5, antirotation keys 6, ball seat 7, lock ring 8, shear pin I9, control cover 10 and lower contact 12, wherein, above-mentioned body 1, cylinder sleeve 5 and lower contact 12 are threaded successively, the upper end of above-mentioned sliding sleeve 2 is inserted in body 1 endoporus bottom, and is fixedly connected with body 1 by shear pin 4; Above-mentioned sliding sleeve 2 lower internal thread is connected with ball seat 7 lower external thread, and lock ring 8, control cover 10 are enclosed within the outer shaft of sliding sleeve 2 bottom undergauge, and lock ring 8, control cover 10 are fixed on sliding sleeve 3 by shear pin I 9; Body 1 top arranges passage 3; Above-mentioned cylinder sleeve 5 lower end arranges gingival cyst of mucous gland in the newborn screw thread 11.
As a modification of the present invention, above-mentioned body 1 bottom arranges rectangular slot, and sliding sleeve 2 cylindrical arranges radial elongated slot, and antirotation keys 6 is placed in body 1 rectangular slot and the radial elongated slot of sliding sleeve 2.
Compared with present technical scheme, switch fracturing sliding bush of the present invention, disposablely realizes multistage pressure break by differential the mating of ball and ball seat, directly goes into operation after construction, because maloperation causes closedown sand jet outlet when effectively preventing fracturing work; Technique is simple, convenient operation; Switch fracturing sliding bush of the present invention provides one can switch fracturing sliding bush sanding apparatus, pressing crack construction is complete, find certain interval water outlet in process of production, ball and ball are sat after brill removes, routine work technique can be adopted to carry out closing the sliding sleeve of corresponding interval, shorten duty cycle, reduce operating cost, extend the oil well production life-span.
Accompanying drawing explanation
Fig. 1 is the structural representation of switch fracturing sliding bush of the present invention;
Structural representation when Fig. 2 is switch fracturing sliding bush of the present invention unlatching;
Fig. 3 be switch fracturing sliding bush of the present invention bore except, close after structural representation.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Those skilled in the art should know, and the invention is not restricted to listed detailed description of the invention, as long as spirit according to the invention, all should be included in protection scope of the present invention.
As shown in Figure 1, switch fracturing sliding bush of the present invention mainly comprises body 1, sliding sleeve 2, shear pin 4, cylinder sleeve 5, antirotation keys 6, ball seat 7, lock ring 8, controls cover 10 and lower contact 12.Sliding sleeve 2 lower internal thread is connected with ball seat 7 lower external thread; Lock ring 8, control cover 10 are inserted on the outer shaft of sliding sleeve 2 bottom undergauge, and lock ring 8, control cover 10 are fixed on sliding sleeve 2 by radial shear pin I 9 of installing.The upper end of sliding sleeve 2 is inserted endoporus from the bottom of body 1, and sliding sleeve 2 is fixedly connected with body 1 by the radial shear pin 4 installed.Antirotation keys 6 puts into body 1 bottom and sliding sleeve 2 radial slot, and cylinder sleeve 5 upper end is threaded fixing with body 1 lower end, and cylinder sleeve 5 lower end and lower contact 12 threaded upper ends are connected and fixed.Body 1 top arranges passage 3, and there is gingival cyst of mucous gland in the newborn screw thread 11 cylinder sleeve 5 lower end.
In the present invention, institute's different forms is not limited only to embodiment cited in this manual, also can comprise other forms of composition.
Adopt switch fracturing sliding bush operation process of the present invention as follows:
First, according to technological design, switch fracturing sliding bush of the present invention is connected with completion tubular column and kit, in lower going-into-well cylinder, implements Well Completion Engineering of Oil Reservoirs.When carrying out pressing crack construction, in tubing string, suppress rated pressure, open after foot passage implements the first pressing crack construction.As shown in Figure 2, after pitching 13 enters ball seat 7, suppress rated pressure shear pin 4 in tubing string to be cut off, sliding sleeve 2 drives ball seat 7, lock ring 8, shear pin I 9 along body 1, controls the top that cover 10 is moved downward to lower contact 12, lock ring 8 is engaged with gingival cyst of mucous gland in the newborn screw thread 11 and is integrated simultaneously, open passage 3, can pressing crack construction be implemented.Connect the sliding sleeve of equivalent amount according to actual pressure break hop count, repeatedly pitching can carry out pressing crack construction.
Open flow is produced.As shown in Figure 3, if when need of production carries out closing certain one-level fracturing sliding bush passage 3, carry out operation by oil-water well brill plug standard and salvaging standard.Bore except after ball seat 7, then under enter coupling open and close instrument drag for the bottom of sliding sleeve 2, upper lifting pipe post rated load shear pin I 9 is cut off, and sliding sleeve 2 moves closing passage 3, can realize the object of card sealing.

Claims (2)

1. a switch fracturing sliding bush, by body (1), sliding sleeve (2), shear pin (4), cylinder sleeve (5), antirotation keys (6), ball seat (7), lock ring (8), shear pin I(9), control cover (10) and lower contact (12) form, it is characterized in that: described body (1), cylinder sleeve (5) and lower contact (12) are threaded successively, the upper end of described sliding sleeve (2) is inserted in body (1) endoporus bottom, and is fixedly connected with body (1) by shear pin (4); Described sliding sleeve (2) lower internal thread is connected with ball seat (7) lower external thread, and lock ring (8), control cover (10) are enclosed within the outer shaft of sliding sleeve (2) bottom undergauge, and lock ring (8), control cover (10) are fixed on sliding sleeve (3) by shear pin I (9); Body (1) top arranges passage (3); Described cylinder sleeve (5) lower end arranges gingival cyst of mucous gland in the newborn screw thread (11).
2. switch fracturing sliding bush according to claim 1, is characterized in that: described body (1) bottom arranges rectangular slot, and sliding sleeve (2) cylindrical arranges radial elongated slot, and antirotation keys (6) is placed in body (1) rectangular slot and sliding sleeve (2) radial elongated slot.
CN201310219991.8A 2013-06-05 2013-06-05 Openable and closable fracture sliding sleeve CN104213892A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310219991.8A CN104213892A (en) 2013-06-05 2013-06-05 Openable and closable fracture sliding sleeve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201310219991.8A CN104213892A (en) 2013-06-05 2013-06-05 Openable and closable fracture sliding sleeve

Publications (1)

Publication Number Publication Date
CN104213892A true CN104213892A (en) 2014-12-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201310219991.8A CN104213892A (en) 2013-06-05 2013-06-05 Openable and closable fracture sliding sleeve

Country Status (1)

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CN (1) CN104213892A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912535A (en) * 2015-05-29 2015-09-16 中国石油天然气股份有限公司 In-section multi-cluster fracturing slide sleeve
CN105401931A (en) * 2015-11-16 2016-03-16 中国石油天然气股份有限公司 Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201650256U (en) * 2010-05-12 2010-11-24 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 Ball seat type cracking slide sleeve
CN202157794U (en) * 2011-08-01 2012-03-07 荆州市赛瑞能源技术有限公司 Ball seat type fracturing slide sleeve
CN102493784A (en) * 2011-12-19 2012-06-13 中国石油集团渤海钻探工程有限公司 Drillable ball injection sliding sleeve for oil-gas well staged fracturing
CN202531150U (en) * 2012-03-31 2012-11-14 大港油田集团有限责任公司 Fishable fracturing sliding sleeve sand spraying device
CN202731865U (en) * 2012-05-28 2013-02-13 中国石油天然气股份有限公司 Switchable fracturing sliding sleeve
CN203321478U (en) * 2013-06-05 2013-12-04 中国石油天然气股份有限公司 Switch fracturing slide bush

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201650256U (en) * 2010-05-12 2010-11-24 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 Ball seat type cracking slide sleeve
CN202157794U (en) * 2011-08-01 2012-03-07 荆州市赛瑞能源技术有限公司 Ball seat type fracturing slide sleeve
CN102493784A (en) * 2011-12-19 2012-06-13 中国石油集团渤海钻探工程有限公司 Drillable ball injection sliding sleeve for oil-gas well staged fracturing
CN202531150U (en) * 2012-03-31 2012-11-14 大港油田集团有限责任公司 Fishable fracturing sliding sleeve sand spraying device
CN202731865U (en) * 2012-05-28 2013-02-13 中国石油天然气股份有限公司 Switchable fracturing sliding sleeve
CN203321478U (en) * 2013-06-05 2013-12-04 中国石油天然气股份有限公司 Switch fracturing slide bush

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104912535A (en) * 2015-05-29 2015-09-16 中国石油天然气股份有限公司 In-section multi-cluster fracturing slide sleeve
CN104912535B (en) * 2015-05-29 2017-09-01 中国石油天然气股份有限公司 Many cluster fracturing sliding bushs in a kind of section
CN105401931A (en) * 2015-11-16 2016-03-16 中国石油天然气股份有限公司 Integrated pipe column for casing pipe sliding sleeve fracturing production and fracturing production method for casing pipe sliding sleeve
CN105401931B (en) * 2015-11-16 2018-03-09 中国石油天然气股份有限公司 A kind of sliding sleeve of bushing fracturing integrated pipe column and its fracturing method

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Application publication date: 20141217

RJ01 Rejection of invention patent application after publication