CN202325383U - Drag fracturing packer for horizontal well - Google Patents

Drag fracturing packer for horizontal well Download PDF

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Publication number
CN202325383U
CN202325383U CN2011204894132U CN201120489413U CN202325383U CN 202325383 U CN202325383 U CN 202325383U CN 2011204894132 U CN2011204894132 U CN 2011204894132U CN 201120489413 U CN201120489413 U CN 201120489413U CN 202325383 U CN202325383 U CN 202325383U
Authority
CN
China
Prior art keywords
sleeve
packing
sand control
cover
horizontal well
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 - Lifetime
Application number
CN2011204894132U
Other languages
Chinese (zh)
Inventor
崔志强
杨福军
舒明锁
宋志强
杜勇
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.)
FUXIN CHIYU PETROLEUM MACHINERY Co Ltd
Original Assignee
FUXIN CHIYU PETROLEUM MACHINERY 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 FUXIN CHIYU PETROLEUM MACHINERY Co Ltd filed Critical FUXIN CHIYU PETROLEUM MACHINERY Co Ltd
Priority to CN2011204894132U priority Critical patent/CN202325383U/en
Application granted granted Critical
Publication of CN202325383U publication Critical patent/CN202325383U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model belongs to an underground tool of an oil and gas field and in particular relates to a drag fracturing packer for a horizontal well. The drag fracturing packer comprises an upper joint (1), a central pipe (2), a cone (11), an integrated slip (13) and a friction body (14), wherein the upper joint (1) is in threaded connection with the central pipe (2); the integrated slip (13) is in threaded connection with a lower sand prevention sleeve (18); the friction body (14) is in threaded connection with a reversing sleeve (16); the cone (11) and the central pipe (2) are fixed through a shear pin (12); the reversing sleeve (16) is arranged on the lower sand prevention sleeve (18); an upper pressing sleeve (3), a lower pressing sleeve (6), an upper rubber cylinder (5), a middle rubber cylinder (7), a lower rubber cylinder (10) and a spacer ring (9) are sleeved on a rubber cylinder shaft (8); a small rubber cylinder (4) is arranged in the upper pressing sleeve (3) and locked; and the integrated slip (13), an upper sand prevention sleeve (15) and the lower sand prevention sleeve (18) form a sand prevention mechanism and integrally cover the central pipe (2). The drag fracturing packer for the horizontal well is simple in structure, easy to set, firm in anchoring, easy to operate and low in cost.

Description

Horizontal well drags the pressure break packer
Technical field
The utility model belongs to the oil gas field downhole tool, and particularly a kind of horizontal well drags the pressure break packer.
Background technology
Horizontal well dragged the pressure break packer in the past, by hydraulic pressure it was set, and accomplished when dragging to last layer section pressure break dragging pressure break, and packing element, slips are not easy to reclaim, easily Ka Jing.The pressure break packer need be realized setting through suppressing car in the past, and setting force is high, generally needs the 5-6T setting force; So big setting force is to pass to effectively on the instrument in horizontal well; Not only increase tubing load, make drilling pipe bending, and packer can not set.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned technical deficiency, provides a kind of and can satisfy horizontal well and drag the pressure break requirement, and levels is not communicated with when avoiding setting unreliable, deblocking, the horizontal well of unfreezing difficulty drags the pressure break packer.
The technical scheme that the utility model technical solution problem adopts is: horizontal well drags the pressure break packer and comprises top connection, central tube, cone, whole slips, friction piece; Be characterized in that top connection is threaded with central tube, whole slips is connected with following sand control external threading, and friction piece is threaded with reversing cover; Fix by shear pin between cone and the central tube; Reversing cover is installed in down sand control and puts, last gland, down gland, go up packing element, middle packing element, lower rubber cylinder, spacer ring and be enclosed within on the packing element axle, little packing element is packed into and is gone up gland locking; Whole slips and last sand control cover, following sand control cover are formed sand control mechanism, and piece cover is on central tube.
The beneficial effect of the utility model is: it is simple that horizontal well drags the pressure break packer construction, sets easily, and grappling is firm, and is easy and simple to handle, with low cost.Be provided with means of communication, the upper lifting pipe post was opened automatically and is adopted the liquid passage after pressure break was accomplished, the upper and lower stressor layer balance that packing element is separated, and deblocking is easy.Instantly behind design attitude, transfer tubing string, close balance channel automatically.Adopt whole slips anchored mode, because packer only bears unidirectional pressure reduction and can repeat to set whole slips anchored mode, it is simple not only to sit card, and the slips resilience after the unfreezing is good, and deblocking is thoroughly reliable, closes simultaneously and adopts the liquid passage.
Description of drawings
Specify with embodiment below in conjunction with accompanying drawing.
Fig. 1 is that horizontal well drags pressure break packer construction sectional view.
Among the figure, the 1-top connection; The 2-central tube; The last gland of 3-; The little packing element of 4-; The last packing element of 5-; Gland under the 6-; Packing element among the 7-; 8-packing element axle; The 9-spacer ring; The 10-lower rubber cylinder; The 11-cone; The 12-shear pin; The whole slips of 13-; The 14-friction piece; The last sand control cover of 15-; The 16-reversing cover; The 17-pin; Sand control cover under the 18-.
The specific embodiment
Embodiment, with reference to accompanying drawing 1, the top connection 1 that horizontal well drags the pressure break packer is threaded with central tube 2, and whole slips 13 is threaded with reversing cover 16, and fixing by shear pin 12 between cone 11 and the central tube 2, reversing cover 16 is installed in down on the sand control cover 18.Last gland 3, down gland 6, go up packing element 5, middle packing element 7, lower rubber cylinder 10, spacer ring 9 and be sleeved on the packing element axle 8; Spacer ring 9 places between packing element 5 and the lower rubber cylinder 10; Little packing element 4 is packed into and is gone up gland 3 lockings; Is connected with pin 17 between reversing cover 16 and the whole slips 13, whole slips 13, goes up sand control cover 15, sand control cover 18 composition sand control mechanisms down, piece cover is on central tube 2.
The operating principle that horizontal well drags the pressure break packer is: when not setting state, reversing cover 16 guarantees that whole slips 13 does not contact with cone 11 in the short groove of central tube 2, prevent that shear pin 12 is stressed, and friction piece 14 produces pretightning force with internal surface of sleeve pipe when sitting card.Whole slips 13, friction piece 14 are connected with back of the body cap thread; Carry in the elder generation and transfer tubing string again; Top connection 1 connects central tube 2 and drives the long switching-over of entering groove by reversing cover 16; Whole slips 13 is contacted with cone 11, and cutting off shear pin 12 back, to drive cones 11 up, whole slips 13 ejected to accomplish go up packing element 5 sealing just.When cone 11 is up center 2 lower end sidewalls are crossed the liquid pathway closure, during pressure break,, continue the compression packing element then, in making, lower rubber cylinder 8,10 compressions form sealing because annular space continues to boost.During deblocking, the upper lifting pipe post, central tube 2 is up; The disengagement of seal member sealing surface, the liquid passage of adopting of sidewall is opened the levels pressure balance; Upper, middle and lower packing element 5,7,10 leans on elastic shrinkage, accomplishes deblocking, and cone 11 is driven up by central tube 2; Break away from whole slips 13, whole slips 13 shrinks through rigid elastic force voluntarily, and grappling is removed.By whole slips 13, go up sand control cover 15, the sand control mechanism that forms of sand control cover 18 covers on the central tube 2 down, guarantees no matter set, deblocking, the groove that commutates on the central tube 2 all covers in the sand control mechanism.

Claims (1)

1. a horizontal well drags the pressure break packer; Comprise top connection (1), central tube (2), cone (11), whole slips (13), friction piece (14); It is characterized in that top connection (1) is threaded with central tube (2); Whole slips (13) is threaded with following sand control cover (18); Friction piece (14) is threaded with reversing cover (16), and fixing by shear pin (12) between cone (11) and the central tube (2), reversing cover (16) is installed in down on the sand control cover (18); Last gland (3), time gland (6), last packing element (5), middle packing element (7), lower rubber cylinder (10), spacer ring (9) are enclosed within on the packing element axle (8); Little packing element (4) is packed into and is gone up gland (3) locking, and whole slips (13) is formed sand control mechanism with last sand control cover (15), following sand control cover (18), and piece cover is on central tube (2).
CN2011204894132U 2011-12-01 2011-12-01 Drag fracturing packer for horizontal well Expired - Lifetime CN202325383U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011204894132U CN202325383U (en) 2011-12-01 2011-12-01 Drag fracturing packer for horizontal well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011204894132U CN202325383U (en) 2011-12-01 2011-12-01 Drag fracturing packer for horizontal well

Publications (1)

Publication Number Publication Date
CN202325383U true CN202325383U (en) 2012-07-11

Family

ID=46437365

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011204894132U Expired - Lifetime CN202325383U (en) 2011-12-01 2011-12-01 Drag fracturing packer for horizontal well

Country Status (1)

Country Link
CN (1) CN202325383U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104499989A (en) * 2014-12-25 2015-04-08 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 Fully-enclosed track anchoring mechanism with function of sand prevention

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104499989A (en) * 2014-12-25 2015-04-08 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 Fully-enclosed track anchoring mechanism with function of sand prevention

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
CX01 Expiry of patent term

Granted publication date: 20120711

CX01 Expiry of patent term