CN203961938U - Packer staged fracturing technology tube pillar in a kind of horizontal well tube - Google Patents

Packer staged fracturing technology tube pillar in a kind of horizontal well tube Download PDF

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Publication number
CN203961938U
CN203961938U CN201420266827.2U CN201420266827U CN203961938U CN 203961938 U CN203961938 U CN 203961938U CN 201420266827 U CN201420266827 U CN 201420266827U CN 203961938 U CN203961938 U CN 203961938U
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CN
China
Prior art keywords
packer
tubing string
slide sleeve
horizontal well
fracturing
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
CN201420266827.2U
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Chinese (zh)
Inventor
吕玮
刘永顺
董建国
伊西峰
李娜
李明
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.)
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
Original Assignee
China Petroleum and Chemical Corp
Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co
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Filing date
Publication date
Application filed by China Petroleum and Chemical Corp, Oil Production Technology Research Institute of Sinopec Shengli Oilfield Co filed Critical China Petroleum and Chemical Corp
Priority to CN201420266827.2U priority Critical patent/CN203961938U/en
Application granted granted Critical
Publication of CN203961938U publication Critical patent/CN203961938U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model is disclosed is packer staged fracturing technology tube pillar in a kind of horizontal well tube, in the horizontal well of casing cementing perforation completion, uses.This tubing string comprises safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster, safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster are connected in turn by oil pipe, and the slide sleeve packer in tubing string is at least installed one-level.Slide sleeve packer in this tubing string can be opened by stuff, without dragging tubing string.This tubing string can be realized the in the situation that of fixed tubular column, in 51/2in sleeve pipe, can realize the nearly staged fracturing of 5 fractured layers by pitching, without dismounting well head, has reduced workload, has shortened the duration; Can remove sand plug by anti-flushing well; Supporting safety joint, in the time that tubing string occurs that sand buries bit freezing, can throw off in safety joint place.The utility model is simple in structure, easy to operate, speed of application is fast, construction risk is low.

Description

Packer staged fracturing technology tube pillar in a kind of horizontal well tube
Technical field
The utility model belongs to packer staged fracturing technology tube pillar in the pressing crack construction equipment of petroleum industry horizontal well, particularly a kind of horizontal well tube, in the horizontal well of casing cementing perforation completion, uses.
Background technology
At present in horizontal well casing pipe, staged fracturing technique is mainly to drag packer staged fracturing, takes the mode of upper lifting pipe post step by step, and pressure break completes after a fractured layer, and upper lifting pipe post carries out the pressing crack construction of next interval, realizes one-trip string and completes multistage pressure break.The problem that this technology exists mainly contains: 1,, due to necessary upper lifting pipe post after a upper fractured layer pressure break, upper lifting pipe post will be dismantled well head, and accurate next fractured layer ability pressure break of card, needs repeated disassembled and assembled well head and pipeline, and workload is large, long construction period; 2, repeat upper lifting pipe post and make packer subject to damage, cause poorly sealedly, cause pressure break failure; 3, pressure break complete after strata pressure higher, upper lifting pipe post easily causes gas blowout accident; Occur that sand can not anti-flushing well while burying bit freezing, construction risk is large.
Summary of the invention
For addressing the above problem, the utility model provides packer staged fracturing technology tube pillar in a kind of horizontal well tube, realizes and does not drag tubing string staged fracturing technique; repeatedly do not dismantle well head, reduce workload, the reduction of erection time; protection fracturing packer, reduces construction risk.
Technical solution of the present utility model is: in a kind of horizontal well tube, packer staged fracturing technology tube pillar comprises safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster, safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster are connected in turn by oil pipe, and the slide sleeve packer in tubing string is at least installed one-level.Slide sleeve packer in this tubing string can be opened by stuff, without dragging tubing string.
Remarkable advantage of the present utility model is: this process pipe string utilizes the chock pressure difference of constant voltage sandblaster to set slide sleeve packer and fracturing packer in the time of pressure break, by slide sleeve packer and fracturing packer, fractured interval is carried out to mechanical layering, open the sliding sleeve of slide sleeve packer by stuff, carry out staged fracturing, realize the object that fixed tubular column completes multistage fractured layer, at most can 5 fractured layers of pressure break.This tubing string, according to the specific condition of horizontal well, has used the slide sleeve packer of high pressure resistant fracturing packer, erosion resistant, has solved the difficult problems such as the erosion resistant under the large discharge capacity pressure break of the high pressure resistant and high sand ratio condition of instrument, overall tubing string is withstand voltage 60MPa, 150 DEG C of heatproofs; Wherein, the only 2MPa of startup pressure reduction of slide sleeve packer and fracturing packer.Its remarkable advantage is embodied in:
1, this tubing string can be realized the in the situation that of fixed tubular column, in 5 1/2 in sleeve pipes, can realize the nearly staged fracturing of 5 fractured layers by pitching, without dismounting well head, has reduced workload, has shortened the duration;
2, because fracturing packer and slide sleeve packer are all inflatable packers, have anti-flushing well function, the hydraulic anchor in tubing string has designed guiding gutter, increase annular space area, when anti-flushing well, cross Flow Velocity large, also reduced frictional resistance, when lift pipe string, be difficult for causing sand plug simultaneously; In the time that unexpected sand plug appears in this tubing string, can remove sand plug by anti-flushing well;
3, supporting safety joint, in the time that tubing string occurs that sand buries bit freezing, can throw off in safety joint place, trip out top oil pipe, is then lowered to supporting fishing tool and carries out operation;
4, have advantages of simple in structure, easy to operate, speed of application is fast, construction risk is low.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model hydraulic anchor.
Detailed description of the invention
Below in conjunction with accompanying drawing in detail the utility model is described in detail; and unrestricted protection domain of the present utility model; referring to Fig. 1 and Fig. 2; in a kind of horizontal well tube, packer staged fracturing technology tube pillar comprises safety joint 1, hydraulic anchor 2, fracturing packer 3, slide sleeve packer 4 and constant voltage sandblaster 5; safety joint 1, hydraulic anchor 2, fracturing packer 3, slide sleeve packer 4 and constant voltage sandblaster 5 are connected in turn by oil pipe, and the slide sleeve packer 4 in tubing string is at least installed one-level.Fracturing packer 3 is arranged on the top of topmost fractured layer.The topmost of tubing string connects safety joint 1, and bottommost connects constant voltage sandblaster 5, and the corresponding fractured layer of slide sleeve packer 4 in tubing string is installed .the corresponding each fractured layer of slide sleeve packer 4 is installed one-level, realizes the object that does not drag tubing string sandblast pressure break.Hydraulic anchor 2 comprises body 2-3 and anchor fluke 2-2, and anchor fluke 2-2 is arranged in body 2-3, is also provided with guiding gutter 2-1 at the outer wall of body 2-3, and guiding gutter 2-1 and anchor fluke 2-2 interval arrange.
When site operation, according to the interval quantity of underground fracture layer, design connects in this process pipe string lower going-into-well, treats that tubing string is down to design attitude, first just for prepad fluid.In the time that prepad fluid arrives the fractured layer position that needs processing, improve discharge capacity, the chock pressure difference that constant voltage sandblaster 5 produces, by setting to slide sleeve packer 4 and fracturing packer 3, continue to improve discharge capacity and starts pressure break fractured layer one; Treat that undermost fractured layer one pressure break finishes, drop into minor diameter low-density ball, in the time that ball arrives the slide sleeve packer 4 of bottom, rising pressure is opened the sliding sleeve of slide sleeve packer 4, and sliding sleeve moves down, and closes the fractured layer one that bottom has pressed off.Strengthen pump truck output and start pressure break fractured layer two, and the follow-up fractured layer three of pressure break successively.After the complete last one deck of pressure break, anti-flushing well slide sleeve packer 4 corresponding to deblocking fracturing packer 3 and each fractured interval successively from top to bottom, fracturing packer 3 and all slide sleeve packer 4 solutions of intervals are honored as a queen and are tripped out this fracturing string.

Claims (5)

1. packer staged fracturing technology tube pillar in a horizontal well tube, comprise safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster, it is characterized in that, safety joint, hydraulic anchor, fracturing packer, slide sleeve packer and constant voltage sandblaster are connected in turn by oil pipe, and the slide sleeve packer in tubing string is at least installed one-level.
2. packer staged fracturing technology tube pillar in a kind of horizontal well tube according to claim 1, is characterized in that, described fracturing packer is arranged on the top of topmost fractured layer.
3. packer staged fracturing technology tube pillar in a kind of horizontal well tube according to claim 1, is characterized in that, the topmost of tubing string connects safety joint, and bottommost connects constant voltage sandblaster, and the corresponding fractured layer of slide sleeve packer in tubing string is installed .
4. packer staged fracturing technology tube pillar in a kind of horizontal well tube according to claim 1, is characterized in that, described hydraulic anchor comprises body and anchor fluke, and anchor fluke is arranged in body, is also provided with guiding gutter at the outer wall of body.
5. packer staged fracturing technology tube pillar in a kind of horizontal well tube according to claim 4, is characterized in that, described guiding gutter and anchor fluke interval arrange.
CN201420266827.2U 2014-05-23 2014-05-23 Packer staged fracturing technology tube pillar in a kind of horizontal well tube Expired - Fee Related CN203961938U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420266827.2U CN203961938U (en) 2014-05-23 2014-05-23 Packer staged fracturing technology tube pillar in a kind of horizontal well tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420266827.2U CN203961938U (en) 2014-05-23 2014-05-23 Packer staged fracturing technology tube pillar in a kind of horizontal well tube

Publications (1)

Publication Number Publication Date
CN203961938U true CN203961938U (en) 2014-11-26

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105178934A (en) * 2015-09-24 2015-12-23 中国石油天然气股份有限公司 Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process
CN105484721A (en) * 2016-01-14 2016-04-13 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Efficient fracturing construction technology tubular column for horizontal well and fracturing construction technology
CN105696994A (en) * 2016-01-20 2016-06-22 中国石油化工股份有限公司 Device used for multidirectional pressure control type spraying-sealing fracturing and tubular column comprising same
CN105756647A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Hydraulic jet fracturing method adopting multi-stage and multi-cluster string fracturing and utilizing immobile strings
CN109236261A (en) * 2018-11-28 2019-01-18 中国石油集团渤海钻探工程有限公司 A kind of oil/gas well huge discharge water-jet layered fracturing pipe string and fracturing process
CN111608633A (en) * 2020-06-30 2020-09-01 中国石油天然气股份有限公司 Large-scale fracturing process suitable for horizontal well

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105756647A (en) * 2014-12-17 2016-07-13 中国石油天然气股份有限公司 Hydraulic jet fracturing method adopting multi-stage and multi-cluster string fracturing and utilizing immobile strings
CN105178934A (en) * 2015-09-24 2015-12-23 中国石油天然气股份有限公司 Horizontal well no-throttle straddle-type double-sealing single-grip fracturing process
CN105484721A (en) * 2016-01-14 2016-04-13 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Efficient fracturing construction technology tubular column for horizontal well and fracturing construction technology
CN105696994A (en) * 2016-01-20 2016-06-22 中国石油化工股份有限公司 Device used for multidirectional pressure control type spraying-sealing fracturing and tubular column comprising same
CN105696994B (en) * 2016-01-20 2018-06-12 中国石油化工股份有限公司 The device of envelope pressure is sprayed for multidirectional pressure control type and includes its tubing string
CN109236261A (en) * 2018-11-28 2019-01-18 中国石油集团渤海钻探工程有限公司 A kind of oil/gas well huge discharge water-jet layered fracturing pipe string and fracturing process
CN111608633A (en) * 2020-06-30 2020-09-01 中国石油天然气股份有限公司 Large-scale fracturing process suitable for horizontal well

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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

Granted publication date: 20141126

Termination date: 20180523

CF01 Termination of patent right due to non-payment of annual fee