CN103321608A - Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out - Google Patents

Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out Download PDF

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Publication number
CN103321608A
CN103321608A CN2013102865162A CN201310286516A CN103321608A CN 103321608 A CN103321608 A CN 103321608A CN 2013102865162 A CN2013102865162 A CN 2013102865162A CN 201310286516 A CN201310286516 A CN 201310286516A CN 103321608 A CN103321608 A CN 103321608A
Authority
CN
China
Prior art keywords
sliding sleeve
ball seat
urceolus
cylindrical shell
cylinder
Prior art date
Application number
CN2013102865162A
Other languages
Chinese (zh)
Inventor
冯强
王瑶
郭鸣
程智远
何志勇
Original Assignee
中国石油集团渤海钻探工程有限公司
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.)
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Publication date
Application filed by 中国石油集团渤海钻探工程有限公司 filed Critical 中国石油集团渤海钻探工程有限公司
Priority to CN2013102865162A priority Critical patent/CN103321608A/en
Publication of CN103321608A publication Critical patent/CN103321608A/en

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Abstract

The invention discloses a rotation-free pawl-type sliding sleeve with a ball seat capable of being taken out. The sliding sleeve comprises a sliding sleeve body, an inner sliding sleeve and a ball seat cylinder, wherein the sliding sleeve body is composed of an upper connector, an outer cylinder and a lower connector. The sliding sleeve body and the inner sliding sleeve are fixed through a shear nail, the inner sliding sleeve and the ball seat cylinder are fixed through a shear nail, a fluid outlet hole is formed in the upper portion of the outer cylinder, and a clamping spring hole is formed in the lower position of the middle of the inner wall of the outer cylinder. An annular switch clamping groove is formed in the inner wall of the upper portion of the inner sliding sleeve, a plurality of split pawl clamping grooves are formed in the inner wall of the middle of the inner sliding sleeve in the peripheral direction, and a clamping spring is installed on the outer wall of the middle of the inner sliding sleeve. A plurality of male pawls are arranged at the upper end of the ball seat cylinder in the peripheral direction, a plurality of female pawls are arranged on the inner side of the lower end of the ball seat cylinder in the peripheral direction, the male pawls are clamped into the split pawl clamping grooves, and a variable diameter ball seat is arranged in the ball seat cylinder. When the inner sliding sleeve moves to the lower end of the outer cylinder, the clamping spring on the inner sliding sleeve is clamped into the clamping spring hole in the outer cylinder. All base seat cylinders can be salvaged through non-rotating type tubular columns in a disposable mode, and a full through path is achieved.

Description

Exempt to turn the desirable ball seat sliding sleeve of pawl type for one time
Technical field
The present invention relates to the exploitation of oil-gas field technical field, particularly a time of using of a kind of staged fracturing complete sets of Techniques exempts to turn the desirable ball seat sliding sleeve of pawl type
Background technology
At present, 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 are realized the multistage pressure break, or adopts well cementation sliding sleeve and kit to cement the well, and finishes the multistage pressure break.The staged fracturing of horizontal well sliding sleeve comprises ball-throwing type sliding sleeve and differential pressure open sliding sleeve, and pitching sliding sleeve technology is by throwing the low-density ball sliding sleeve of fracturing switch to be opened, and exposes the intercommunicating pore of oil reservoir and oil pipe, is communicated with oil pipe and oil reservoir.Compare with differential sliding sleeve, pitching sliding sleeve technology can be realized by a pitching open operation of multistage sliding sleeve, and efficient improves greatly.In addition, operation is simple and reliable for it, and the needed corollary equipment in ground is few, has reduced operation.Like this, pitching sliding sleeve technology has obtained using widely in horizontal well multistage pressure break.
But pitching sliding sleeve technology is after construction finishes, and ball seat can not drag for, and hierarchy number is more, and mineshaft diameter is less, more can't realize full-bore.If adopt brill except operation the sliding sleeve in the well and round bur to be removed, not only efficient is low, and operating cost is high, is difficult to make down-hole string to form full-bore.In addition, after construction was finished, if meet water-yielding stratum, conventional pitching sliding sleeve can't be closed this layer, causes water logging, can cause Oil/gas Well to stop production when serious, and impact is exploitation normally.
Out of trade except boring except doing, can also salvage ball seat, realize the full-bore of tubing string.Prior art can only be that ball seat is fished for one by one mostly, and salvaging efficient is low.For this situation, behind pressing crack construction, can be lowered to that interior ball seat fishing tool is disposable salvages whole ball seat cylindrical shells, reducing the salvaging time, thereby promoted to a great extent operating efficiency.At present salvaging mode commonly used is that screw thread is salvaged, and need to rotate fishing tool in the salvaging process and finish screwed connection, so such invention can not for example coiled tubing and steel wire be lowered to non-rotating class tubing string.In addition, existing can drag in the sliding sleeve ball seat part to be grouped into part more, fish for and be prone to stuck risk in the process, thereby cause fishing for unsuccessfully of whole time tubing string.
Summary of the invention
The technical problem to be solved in the present invention provides disposable a time of salvaging whole ball seat cylindrical shells of the enough non-rotating class tubing strings of a kind of energy and exempts to turn the desirable ball seat sliding sleeve of pawl type.
For this reason, technical scheme of the present invention is as follows:
Exempt to turn the desirable ball seat sliding sleeve of pawl type for one time, comprise the sliding sleeve body that consisted of by the top connection that is threaded successively, urceolus and lower contact, be installed in the inner sliding sleeve in the described urceolus and be arranged on ball seat cylindrical shell in the described inner sliding sleeve, between described sliding sleeve body and the inner sliding sleeve, fix by shear pin respectively between described inner sliding sleeve and the ball seat cylindrical shell, seal between inner sliding sleeve two ends and the sliding sleeve body, urceolus top is provided with fluid hole, and described outer tube inner wall middle part is provided with clamp spring hole in the position on the lower; Inwall on described inner sliding sleeve top is provided with the switch draw-in groove of annular, is provided with in the circumferential direction of the circle on the inwall of described inner sliding sleeve middle part on the outer wall at a plurality of minutes claw draw-in grooves, middle part jump ring is installed; Described ball seat cylindrical shell upper end edge circumferencial direction is provided with a plurality of male ratchets, the inboard, lower end is provided with a plurality of female ratchets in the circumferential direction of the circle, the size and shape of described female ratchet and male ratchet adapts, described a plurality of public ratchet snaps in respectively in a plurality of minutes claw draw-in grooves, and inwardly protruding is formed with the reducing ball seat at ball seat cylinder inboard wall middle part; Shear pin between described inner sliding sleeve and described urceolus cuts off, when inner sliding sleeve moves to the urceolus lower end, the jump ring on the inner sliding sleeve snaps in the clamp spring hole on the urceolus.
In one embodiment of the invention, the shear pin of fixing described inner sliding sleeve and ball seat cylindrical shell is positioned at the middle part of ball seat cylindrical shell.The up and down both sides of corresponding described reducing ball seat are provided with sealing ring on the described ball seat cylindrical shell outer peripheral face, are used for making between ball seat cylindrical shell and the inner sliding sleeve sealing, and simultaneously the shear pin hole on the inner sliding sleeve are sealed.
The advantage of exempting to turn the desirable ball seat sliding sleeve of pawl type for one time of the present invention is:
(1) sliding sleeve is opened in pitching, and is simple;
(2) the ball seat part is few, is convenient to fish for, and the bit freezing risk is low;
(3) can realize large latus rectum after ball seat is pulled out, be convenient to carry out in the pit shaft other operation;
(4) one-trip string is salvaged all ball seats, and is convenient and easy;
(5) salvaging process need not to rotate tubing string, and available oil pipe, coiled tubing are lowered to, and straight well can be used steel wire salvaging, and equipment is simple, salvages cost low;
(6) inner sliding sleeve is provided with the switch draw-in groove, can utilize the sliding sleeve switch instrument realization later stage to close and opening.
Description of drawings
Fig. 1 is the structural representation of exempting to turn the desirable ball seat sliding sleeve of pawl type for one time of the present invention;
Fig. 2 is the structural representation for the fishing tool of salvaging Fig. 1 sliding sleeve;
Fig. 3 is the pipe string schematic diagram with a plurality of ball seats of the salvaging of the fishing tool among Fig. 2;
Fig. 4 be among Fig. 1 ball seat by the shift sleeve structure schematic diagram after pulling out.
The specific embodiment
Below in conjunction with accompanying drawing the structure of exempting to turn the desirable ball seat sliding sleeve of pawl type for one time of the present invention is elaborated.
Referring to Fig. 1, exempt to turn the desirable ball seat sliding sleeve of pawl type and comprise for this time: the sliding sleeve body that is consisted of by the top connection 1 that is threaded successively, urceolus 2 and lower contact 5, be installed in the inner sliding sleeve in the urceolus 2 and be arranged on ball seat cylindrical shell in the inner sliding sleeve.Fixing by shear pin 6 between sliding sleeve body and the inner sliding sleeve 3, fixing by shear pin 9 between inner sliding sleeve and the ball seat cylindrical shell.By sealing ring 7 sealings, sealing ring 7 inner sliding sleeve two ends respectively are provided with 2 between inner sliding sleeve two ends and the sliding sleeve body.
Be provided with fluid hole a on urceolus 2 tops, urceolus 2 inwalls middle part is provided with clamp spring hole b in the position on the lower.Inwall on inner sliding sleeve 3 tops is provided with the switch draw-in groove e of annular, and the outer wall that is provided with in the circumferential direction of the circle a plurality of minutes claw draw-in groove c, middle part on inner sliding sleeve 3 middle part inwalls is equipped with jump ring 8.
Ball seat cylindrical shell 4 upper end edge circumferencial directions are provided with a plurality of male ratchet d, the inboard, lower end is provided with a plurality of female ratchet f in the circumferential direction of the circle, and the size and shape of female ratchet f and male ratchet d adapts, and a plurality of public ratchet f snap in respectively in a plurality of minutes claw draw-in groove c.Inwardly protruding is formed with the reducing ball seat at ball seat cylindrical shell 4 inwalls middle part; Shear pin between inner sliding sleeve 3 and urceolus 2 cuts off, when inner sliding sleeve moves to urceolus 2 lower end, the jump ring 8 on the inner sliding sleeve 3 snaps in the clamp spring hole b on the urceolus 2.
In addition, the up and down both sides of corresponding described reducing ball seat are provided with sealing ring 11 on ball seat cylindrical shell 4 outer peripheral faces, so that sealing between ball seat cylindrical shell 4 and the inner sliding sleeve 3, guarantee simultaneously to cut and order hole place sealing.
Figure 2 shows that the structural representation with the matching used fishing tool of sliding sleeve of the present invention.As shown in the figure, inboard, this fishing tool upper end is formed with screw thread, and the inboard, lower end is provided with the mother that the size and shape of the male ratchet d on a plurality of and above-mentioned ball seat cylindrical shell 4 adapts and drags for pawl h.
During use, the sliding sleeve of a plurality of inventions is end to end, and the diameter of the reducing ball seat in each sliding sleeve reduces from bottom to top successively, so that carry out fishing.
The below describes the implementation process of exempting to turn the desirable ball seat sliding sleeve of pawl type for one time of the present invention:
1) sliding sleeves at different levels are lowered to assigned address, drop into the ball of diameter minimum, ball falls into the reducing ball seat e of that grade sliding sleeve of pit shaft lowermost end internal diameter minimum.Suppress, make the ball seat cylindrical shell produce downward power, and drive inner sliding sleeve 3 and move down with respect to urceolus 2, cut off shear pin 6, this grade sliding sleeve is opened, when jump ring 8 was displaced downwardly to jump-ring slot b position, jump ring 8 ejected, and snaps in jump-ring slot b, defines inner sliding sleeve 3 and further moves down.
2) repeating step 1), open successively whole sliding sleeves from bottom to top.
3) be lowered to fishing tool 10, make the mother of fishing tool 10 drag for the male ratchet d that pawl h is inserted in the top ball seat, public ratchet d reduced, from minute claw draw-in groove c, break away from, then press down tubing string, cut off shear pin 9, continue to move down tubing string, mutually block until the mother of this ball seat lower end drags for the male ratchet d of pawl f and next ball seat.
4) repeat to salvage, until all ball seat cylindrical shells are connected, as shown in Figure 3.
5) the upper lifting pipe post is finished salvaging, realizes the pit shaft full-bore, as shown in Figure 4.
As want to close or open certain layer, can be lowered to switching tools, there is bossing in the described switching tools outside, but flush switch draw-in groove g, by on carry or transfer the switching tools of embedding, can drive inner sliding sleeve and open or close liquid outlet a, with opening or closing of realization sliding sleeve.

Claims (3)

1. exempt to turn the desirable ball seat sliding sleeve of pawl type for one time, comprise the sliding sleeve body that consisted of by the top connection that is threaded successively (1), urceolus (2) and lower contact (5), be installed in the inner sliding sleeve in the described urceolus (2) and be arranged on ball seat cylindrical shell in the described inner sliding sleeve, between described sliding sleeve body and the inner sliding sleeve, fix by shear pin respectively between described inner sliding sleeve and the ball seat cylindrical shell, seal between inner sliding sleeve two ends and the sliding sleeve body, urceolus (2) top is provided with fluid hole (a), it is characterized in that: described urceolus (2) inwall middle part is provided with clamp spring hole (b) in the position on the lower; Inwall on described inner sliding sleeve (3) top is provided with the switch draw-in groove (e) of annular, is provided with in the circumferential direction of the circle on the inwall of described inner sliding sleeve (3) middle part on the outer wall at a plurality of minutes claw draw-in grooves (c), middle part jump ring (8) is installed; Described ball seat cylindrical shell (4) upper end edge circumferencial direction is provided with a plurality of male ratchets (d), the inboard, lower end is provided with a plurality of female ratchets (c) in the circumferential direction of the circle, the size and shape of described female ratchet (c) and male ratchet (d) adapts, described a plurality of public ratchets (d) snap in respectively in a plurality of minutes claw draw-in groove (c), and inwardly protruding is formed with the reducing ball seat at ball seat cylindrical shell (4) inwall middle part; When the shear pin between described inner sliding sleeve (3) and the described urceolus (2) is cut off, inner sliding sleeve moves to urceolus (2) lower end, the jump ring (8) on the inner sliding sleeve (3) snaps in the clamp spring hole (b) on the urceolus (2).
2. exempt to turn the desirable ball seat sliding sleeve of pawl type one time according to claim 1, it is characterized in that: the shear pin of fixing described inner sliding sleeve and ball seat cylindrical shell is positioned at the middle part of ball seat cylindrical shell.
3. exempt to turn the desirable ball seat sliding sleeve of pawl type one time according to claim 2, it is characterized in that: on the outer peripheral face of described ball seat cylindrical shell, the up and down both sides of corresponding described reducing ball seat are provided with sealing ring (11).
CN2013102865162A 2013-07-09 2013-07-09 Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out CN103321608A (en)

Priority Applications (1)

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CN2013102865162A CN103321608A (en) 2013-07-09 2013-07-09 Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out

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Application Number Priority Date Filing Date Title
CN2013102865162A CN103321608A (en) 2013-07-09 2013-07-09 Rotation-free pawl-type sliding sleeve with ball seat capable of being taken out

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103590800A (en) * 2013-11-28 2014-02-19 中国石油集团川庆钻探工程有限公司 Multi-level pitch fracturing sliding sleeve capable of fishing ball seats
CN103628853A (en) * 2013-11-06 2014-03-12 宝鸡瑞林石油机电设备有限责任公司 Ball jumping type sliding sleeve device used under well
CN104695929A (en) * 2015-03-02 2015-06-10 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well
CN104790909A (en) * 2015-04-09 2015-07-22 中国石油集团西部钻探工程有限公司 Pitching sliding sleeve with ball seat capable of being taken
CN105089601A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Grading-limitation-free slide sleeve and process method
CN105298460A (en) * 2014-07-29 2016-02-03 中国石油化工股份有限公司 Fracturing tool, fracturing pipe string and fracturing method
CN105672945A (en) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 Sliding sleeve opening device
CN105672944A (en) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 Sliding sleeve opening device
WO2017124977A1 (en) * 2016-01-20 2017-07-27 中国石油化工股份有限公司 Tool for opening sliding sleeve

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US6520257B2 (en) * 2000-12-14 2003-02-18 Jerry P. Allamon Method and apparatus for surge reduction
CN101265788A (en) * 2008-04-24 2008-09-17 中国海洋石油总公司 Y tube anti-pollution method and its apparatus
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
US20130056206A1 (en) * 2011-09-01 2013-03-07 Team Oil Tools, Lp Valve for hydraulic fracturing through cement outside casing
CN202832376U (en) * 2012-08-07 2013-03-27 新疆华油油气工程有限公司 Full-bore closable stratified sliding sleeve
CN103089227A (en) * 2011-11-03 2013-05-08 中国石油天然气股份有限公司 Large drift diameter drilling-free segmented fracture well completion sliding sleeve device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6520257B2 (en) * 2000-12-14 2003-02-18 Jerry P. Allamon Method and apparatus for surge reduction
CN101265788A (en) * 2008-04-24 2008-09-17 中国海洋石油总公司 Y tube anti-pollution method and its apparatus
US20130056206A1 (en) * 2011-09-01 2013-03-07 Team Oil Tools, Lp Valve for hydraulic fracturing through cement outside casing
CN103089227A (en) * 2011-11-03 2013-05-08 中国石油天然气股份有限公司 Large drift diameter drilling-free segmented fracture well completion sliding sleeve 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
CN202832376U (en) * 2012-08-07 2013-03-27 新疆华油油气工程有限公司 Full-bore closable stratified sliding sleeve

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103628853A (en) * 2013-11-06 2014-03-12 宝鸡瑞林石油机电设备有限责任公司 Ball jumping type sliding sleeve device used under well
CN103590800B (en) * 2013-11-28 2016-03-16 中国石油集团川庆钻探工程有限公司 The multistage pitching fracturing sliding bush of ball seat can be salvaged
CN103590800A (en) * 2013-11-28 2014-02-19 中国石油集团川庆钻探工程有限公司 Multi-level pitch fracturing sliding sleeve capable of fishing ball seats
CN105089601A (en) * 2014-05-14 2015-11-25 中国石油天然气股份有限公司 Grading-limitation-free slide sleeve and process method
CN105089601B (en) * 2014-05-14 2018-04-03 中国石油天然气股份有限公司 A kind of infinite stages sliding sleeve and process
CN105298460B (en) * 2014-07-29 2018-03-02 中国石油化工股份有限公司 Fracturing tool, fracturing string and fracturing process
CN105298460A (en) * 2014-07-29 2016-02-03 中国石油化工股份有限公司 Fracturing tool, fracturing pipe string and fracturing method
CN104695929A (en) * 2015-03-02 2015-06-10 中国石油化工股份有限公司江汉油田分公司采油工艺研究院 Multistage fracturing well completion pipe string with coring sliding sleeve for horizontal well
US10494901B2 (en) 2015-04-09 2019-12-03 Cnpc Xibu Drilling Engineering Company Limited Ball-dropping sliding sleeve with a removable ball seat
CN104790909A (en) * 2015-04-09 2015-07-22 中国石油集团西部钻探工程有限公司 Pitching sliding sleeve with ball seat capable of being taken
WO2017124977A1 (en) * 2016-01-20 2017-07-27 中国石油化工股份有限公司 Tool for opening sliding sleeve
CN105672944A (en) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 Sliding sleeve opening device
CN105672945B (en) * 2016-01-20 2018-11-06 中国石油化工股份有限公司 A kind of sliding sleeve opening device
CN105672945A (en) * 2016-01-20 2016-06-15 中国石油化工股份有限公司 Sliding sleeve opening device

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Application publication date: 20130925

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