CN202946131U - Pawl spring clamping buckle type self-locking pressing crack sliding sleeve - Google Patents
Pawl spring clamping buckle type self-locking pressing crack sliding sleeve Download PDFInfo
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- CN202946131U CN202946131U CN 201220670463 CN201220670463U CN202946131U CN 202946131 U CN202946131 U CN 202946131U CN 201220670463 CN201220670463 CN 201220670463 CN 201220670463 U CN201220670463 U CN 201220670463U CN 202946131 U CN202946131 U CN 202946131U
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- sliding sleeve
- pawl spring
- hole
- locking
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Abstract
The utility model relates to the technical field of self-locking pressing crack sliding sleeves, and discloses a pawl spring clamping buckle type self-locking pressing crack sliding sleeve. The pawl spring clamping buckle type self-locking pressing crack sliding sleeve comprises a body, the sliding sleeve body and a ball base, wherein the upper part of the body is provided with an overvoltage hole, the interior of the body and corresponding to the overvoltage hole is provided with the sliding sleeve body which can move in an upper-down manner, and the upper part of the sliding sleeve body is internally fixedly provided with the ball base; and at least three axial long holes are distributed in the periphery of the lower part of the sliding sleeve body and can divide the lower part of the sliding sleeve body into strip-shaped sliding sleeve pawl springs, and the outer side of the middle of each sliding sleeve pawl spring is respectively provided with a conical clamping block which is raised in the middle. The pawl spring clamping buckle type self-locking pressing crack sliding sleeve provided by the utility model has the advantages that the structure is reasonable and compact, the use is convenient, a clamping buckle bulge is raised to separate form an upper closing hole groove so as to enable the sliding sleeve body to move downwards and open an overflowing hole through the radial shrinkage of an elastic reed arranged on the lower part of the sliding sleeve body, and a pressing crack is performed; and meanwhile, the sliding sleeve body can move downwards to be in a lower opening hole groove, and the clamping buckle bulge is fixed in the lower opening hole groove in a raising, so that a self-locking function is realized, the structure is simple, the assembly and the operation are convenient, the process is easy, and the cost is low.
Description
Technical field
The utility model relates to self-locking fracturing sliding bush technical field, is a kind of pawl spring buckle-type self-locking fracturing sliding bush.
Background technology
Along with continuing to increase of the unconventional exploration of oil and gas field such as shale gas, the people in the industry also deepens continuously for the research of carrying out unconventional oil-gas mining, in carrying out such oil-gas mining process, carrying out Fracturing Technology is the technological means that realizes such oil gas realized value exploitation; In implementing the fracturing technique process, realize two kinds of functions of pressure break and self-locking, the mode that needs to adopt shear pin to cut off is opened sliding sleeve and is adopted pawl or semi-loop to realize self-locking; In use, dual mode must be used in conjunction with, and has increased assembling and operation easier; Due to complex structure, difficulty of processing is large simultaneously, and the production cycle is long, and cost is higher.
Summary of the invention
The utility model provides a kind of pawl spring buckle-type self-locking fracturing sliding bush, overcome the deficiency of above-mentioned prior art, it can effectively solve and adopts shear pin to open sliding sleeve in the past and adopt pawl or semi-loop to realize the self-locking fracturing sliding bush of self-locking, and assembling and operation easier are high; Complex structure, difficulty of processing is large, the problem that cost is high.
The technical solution of the utility model realizes by following measures: a kind of pawl spring buckle-type self-locking fracturing sliding bush comprises body, sliding sleeve and ball seat; The overvoltage hole is arranged on the top of body; The body interior corresponding with the overvoltage hole is equipped with the sliding sleeve that can move up and down; Be installed with ball seat in the top of sliding sleeve; Be distributed with at least three axial long holes and the sliding sleeve bottom be separated into the sliding sleeve pawl spring of strip in the lower circumference of sliding sleeve; The fixture block that the taper of middle part projection is arranged respectively in each outside, sliding sleeve pawl spring middle part; Shangguan hole groove is arranged in the body corresponding with fixture block middle part; Fixture block is arranged in the groove of shangguan hole; In the body bottom, lower perforate groove is arranged; Shangguan hole groove is to the distance of the centre distance between lower perforate groove greater than center, overvoltage hole to sliding sleeve top.
The below is the further optimization and/or improvements to above-mentioned utility model technical scheme:
The pawl spring groove that annular can be arranged in the bottom of above-mentioned sliding sleeve and is evenly distributed in 18 axial long holes corresponding with the pawl spring groove on sliding sleeve corresponding to pawl spring groove, axial long hole is separated into nineteen sliding sleeve pawl spring with the sliding sleeve bottom.
The upside of above-mentioned body and downside can have respectively internal thread, are installed with top connection and lower contact by screw thread respectively in the upside of body He in downside; The sliding sleeve upper end withstands on the bottom of top connection; The top of sliding sleeve lower end and lower contact separately; On the top of top connection, conical internal thread and conical external screw thread are arranged; In the bottom of lower contact, conical internal thread and conical external screw thread are arranged.
The internal thread boss of annular can be arranged in the top of above-mentioned sliding sleeve, and the bottom of ball seat is fixedly mounted on the internal thread boss by screw thread.
The upper inner of above-mentioned ball seat is taper type wide at the top and narrow at the bottom.
On the body of above-mentioned top connection below, circumference uniform distribution can have six overvoltage holes.
Between the sliding sleeve of top, above-mentioned overvoltage hole and body, sealing ring can be installed; Between sliding sleeve below the overvoltage hole and body, sealing ring is installed; Between the top of ball seat and sliding sleeve, sealing ring is installed; Body is equipped with sealing ring respectively and between top connection and lower contact.
The utility model reasonable and compact in structure, easy to use; The radial contraction of the elastic spring by the sliding sleeve bottom, buckle projection can break away from shangguan hole groove makes sliding sleeve descending and with the unlatching of flowing hole, implements pressure break; Simultaneously, sliding sleeve comes downwards in lower perforate groove, and the buckle projection is fixed on lower perforate groove, realizes auto-lock function; Simple in structure, assembling and easy to operate; Easily processing, cost is low.
Description of drawings
Accompanying drawing 1 is looked the half section structural representation for the master of the utility model most preferred embodiment.
Accompanying drawing 2 is looked the half section structural representation for the descending master of sliding sleeve 1 in accompanying drawing 1.
Accompanying drawing 3 is looked the half section structural representation for the master of sliding sleeve in accompanying drawing 1.
Coding in accompanying drawing is respectively: 1 is body, and 2 are top connection, and 3 are lower contact, and 4 are the overvoltage hole, and 5 is sliding sleeve, 6 is ball seat, and 7 is elastic spring, and 8 is fixture block, and 9 is shangguan hole groove, and 10 is lower perforate groove, 11 is the internal thread boss, and 12 is sealing ring, and 13 is axial long hole, and 14 is the pawl spring groove.
The specific embodiment
The utility model is not subjected to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
In the utility model, for convenience of description, the description of the relative position relation of each parts is all that the Butut mode according to Figure of description 1 is described, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
Below in conjunction with embodiment and accompanying drawing, the utility model is further described:
As shown in Figure 1, this pawl spring buckle-type self-locking fracturing sliding bush comprises body 1, sliding sleeve 5 and ball seat 6; Overvoltage hole 4 is arranged on the top of body 1; Corresponding with overvoltage hole 4 body 1 inside is equipped with the sliding sleeve 5 that can move up and down; Be installed with ball seat 6 in the top of sliding sleeve 5; Be distributed with at least three axial long holes 13 and sliding sleeve 5 bottoms be separated into the sliding sleeve pawl spring 7 of strip in the lower circumference of sliding sleeve 5; The fixture block 8 that the taper of middle part projection is arranged respectively in each sliding sleeve pawl spring 7 outsides, middle parts; Shangguan hole groove 9 is arranged in corresponding with fixture block 8 body 1 middle part; Fixture block 8 is arranged in shangguan hole groove 9; In body 1 bottom, lower perforate groove 10 is arranged; Shangguan hole groove 9 is to the distance of the centre distance between lower perforate groove 10 greater than 4 centers, overvoltage hole to sliding sleeve 5 tops.Sliding sleeve pawl spring 7 expandables; After pitching is sprained and pressed, sliding sleeve pawl spring 7 radially shrinks and breaks away from shangguan hole groove 9, and sliding sleeve 5 is descending, overvoltage hole 4 unlatchings; Sliding sleeve 5 comes downwards to lower perforate groove 10, and sliding sleeve pawl spring 7 elasticity are recovered, and fixture block 8 is stuck in lower perforate groove 10, and sliding sleeve is fixed, and realizes self-locking; Simple in structure, assembling and easy to operate; Easily processing, cost is low.
Can according to actual needs, above-mentioned pawl spring buckle-type self-locking fracturing sliding bush be made further optimization and/or improvements:
As shown in Figure 1, the pawl spring groove 14 that annular is arranged in the bottom of sliding sleeve 5, with be evenly distributed in 18 axial long holes 13 corresponding with pawl spring groove 14 on sliding sleeve 5 corresponding to pawl spring groove 14, axial long hole 13 is separated into nineteen sliding sleeve pawl spring 7 with sliding sleeve 5 bottoms.Pawl spring groove 14 can reduce the thickness of sliding sleeve pawl spring 7, increases elasticity and the toughness of sliding sleeve pawl spring 7, is convenient to sliding sleeve pawl spring 7 and realizes radial expansion.
As shown in Figure 1, at upside and the downside of body 1, internal thread is arranged respectively, be installed with top connection 2 and lower contact 3 by screw thread respectively in the upside of body 1 He in downside; Sliding sleeve 5 upper ends withstand on the bottom of top connection 2; The top of sliding sleeve 5 lower ends and lower contact 3 separately; On the top of top connection 2, conical internal thread and conical external screw thread are arranged; In the bottom of lower contact 3, conical internal thread and conical external screw thread are arranged.Top connection 2 and lower contact 3 can be convenient to the utility model and other devices are installed; Body 1 is threaded connection with top connection 2 and lower contact 3 simultaneously, easy accessibility.
As shown in Figure 1, the internal thread boss 11 of annular is arranged in the top of sliding sleeve 5, the bottom of ball seat 6 is fixedly mounted on internal thread boss 11 by screw thread.Be convenient to dismounting between sliding sleeve 5 and body 1.
As shown in Figure 1, the upper inner of ball seat 6 is taper type wide at the top and narrow at the bottom.Make spheroid set better effects if on ball seat 6.
As shown in Figure 1, be evenly distributed in six overvoltage holes 4 on the body 1 below top connection 2.
As shown in Figure 1, between the sliding sleeve 5 above overvoltage hole 4 and body 1, sealing ring 12 is installed; Between the sliding sleeve 5 below overvoltage hole 4 and body 1, sealing ring 12 is installed; Between the top of ball seat 6 and sliding sleeve 5, sealing ring 12 is installed; Body 1 is equipped with sealing ring 12 respectively and between top connection 2 and lower contact 3.Sealing ring 12 can play the effect that increases sealing between contact surface.
Above technical characterictic has consisted of most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, satisfies the demand of different situations.
The use procedure of the utility model most preferred embodiment: at first the utility model is arranged on bottom position between two packers as the part of fracturing string; After fracturing string enters well and reaches the position of design well depth, by ground pitching operation, and carry out pumping, spheroid enters the well recoil on ball seat 6 and the pressure of spraining; When pressure arrives design load, due to the ground pump function, sliding sleeve 5 there is downward thrust, make sliding sleeve pawl spring 7 radial contraction, fixture block 8 breaks away from shangguan hole groove 9, and sliding sleeve 5 is descending, and flowing hole 4 is opened; High-pressure fluid enters the stratum by flowing hole 4, implements fracturing work; Sliding sleeve 5 is subjected to pump function to continue to come downwards to lower perforate groove 10 simultaneously, and sliding sleeve pawl spring 7 recovers automatically, and fixture block 8 is stuck in lower perforate groove 10, makes sliding sleeve 5 fixing, realizes auto-lock function.
Claims (10)
1. a pawl spring buckle-type self-locking fracturing sliding bush, is characterized in that comprising body, sliding sleeve and ball seat; The overvoltage hole is arranged on the top of body; The body interior corresponding with the overvoltage hole is equipped with the sliding sleeve that can move up and down; Be installed with ball seat in the top of sliding sleeve; Be distributed with at least three axial long holes and the sliding sleeve bottom be separated into the sliding sleeve pawl spring of strip in the lower circumference of sliding sleeve; The fixture block that the taper of middle part projection is arranged respectively in each outside, sliding sleeve pawl spring middle part; Shangguan hole groove is arranged in the body corresponding with fixture block middle part; Fixture block is arranged in the groove of shangguan hole; In the body bottom, lower perforate groove is arranged; Shangguan hole groove is to the distance of the centre distance between lower perforate groove greater than center, overvoltage hole to sliding sleeve top.
2. pawl spring buckle-type self-locking fracturing sliding bush according to claim 1, it is characterized in that having in the bottom of sliding sleeve the pawl spring groove of annular, with be evenly distributed in 18 axial long holes corresponding with the pawl spring groove on sliding sleeve corresponding to pawl spring groove, axial long hole is separated into nineteen sliding sleeve pawl spring with the sliding sleeve bottom.
3. pawl spring buckle-type self-locking fracturing sliding bush according to claim 1 and 2, is characterized in that the upside of body and downside have respectively internal thread, are installed with top connection and lower contact by screw thread respectively in the upside of body He in downside; The sliding sleeve upper end withstands on the bottom of top connection; The top of sliding sleeve lower end and lower contact separately; On the top of top connection, conical internal thread and conical external screw thread are arranged; In the bottom of lower contact, conical internal thread and conical external screw thread are arranged.
4. pawl spring buckle-type self-locking fracturing sliding bush according to claim 1 and 2 is characterized in that having in the top of sliding sleeve the internal thread boss of annular, and the bottom of ball seat is fixedly mounted on the internal thread boss by screw thread.
5. pawl spring buckle-type self-locking fracturing sliding bush according to claim 3 is characterized in that having in the top of sliding sleeve the internal thread boss of annular, and the bottom of ball seat is fixedly mounted on the internal thread boss by screw thread.
6. pawl spring buckle-type self-locking fracturing sliding bush according to claim 5, is characterized in that the upper inner of ball seat is taper type wide at the top and narrow at the bottom.
7. pawl spring buckle-type self-locking fracturing sliding bush according to claim 6 is characterized in that being evenly distributed on the body of top connection below six overvoltage holes.
8. pawl spring buckle-type self-locking fracturing sliding bush according to claim 3 is characterized in that between the sliding sleeve of top, overvoltage hole and body, sealing ring being installed; Between sliding sleeve below the overvoltage hole and body, sealing ring is installed; Between the top of ball seat and sliding sleeve, sealing ring is installed; Body is equipped with sealing ring respectively and between top connection and lower contact.
9. pawl spring buckle-type self-locking fracturing sliding bush according to claim 5 is characterized in that between the sliding sleeve of top, overvoltage hole and body, sealing ring being installed; Between sliding sleeve below the overvoltage hole and body, sealing ring is installed; Between the top of ball seat and sliding sleeve, sealing ring is installed; Body is equipped with sealing ring respectively and between top connection and lower contact.
10. pawl spring buckle-type self-locking fracturing sliding bush according to claim 7 is characterized in that between the sliding sleeve of top, overvoltage hole and body, sealing ring being installed; Between sliding sleeve below the overvoltage hole and body, sealing ring is installed; Between the top of ball seat and sliding sleeve, sealing ring is installed; Body is equipped with sealing ring respectively and between top connection and lower contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670463 CN202946131U (en) | 2012-12-07 | 2012-12-07 | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670463 CN202946131U (en) | 2012-12-07 | 2012-12-07 | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202946131U true CN202946131U (en) | 2013-05-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220670463 Expired - Fee Related CN202946131U (en) | 2012-12-07 | 2012-12-07 | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202946131U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711455A (en) * | 2013-12-16 | 2014-04-09 | 东营市福利德石油科技开发有限责任公司 | Fixable ball-type production sleeve for deep-water oil well |
| CN103806867A (en) * | 2014-02-10 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Flow-controllable sliding sleeve |
| CN104790909A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Tee Removable Pitching Slider |
| CN110566144A (en) * | 2019-09-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Sand flushing method and sand flushing string for preventing leakage and loss |
-
2012
- 2012-12-07 CN CN 201220670463 patent/CN202946131U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103711455A (en) * | 2013-12-16 | 2014-04-09 | 东营市福利德石油科技开发有限责任公司 | Fixable ball-type production sleeve for deep-water oil well |
| CN103711455B (en) * | 2013-12-16 | 2016-04-20 | 东营市福利德石油科技开发有限责任公司 | Deepwater wells can be fixed ball and produce sliding sleeve |
| CN103806867A (en) * | 2014-02-10 | 2014-05-21 | 中国石油集团西部钻探工程有限公司 | Flow-controllable sliding sleeve |
| CN103806867B (en) * | 2014-02-10 | 2017-01-11 | 中国石油集团西部钻探工程有限公司 | Flow-controllable sliding sleeve |
| CN104790909A (en) * | 2015-04-09 | 2015-07-22 | 中国石油集团西部钻探工程有限公司 | Tee Removable Pitching Slider |
| US10494901B2 (en) | 2015-04-09 | 2019-12-03 | Cnpc Xibu Drilling Engineering Company Limited | Ball-dropping sliding sleeve with a removable ball seat |
| CN110566144A (en) * | 2019-09-27 | 2019-12-13 | 中石化石油工程技术服务有限公司 | Sand flushing method and sand flushing string for preventing leakage and loss |
| CN110566144B (en) * | 2019-09-27 | 2021-08-17 | 中石化石油工程技术服务有限公司 | Sand flushing method for leakage prevention and sand flushing pipe string |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130522 Termination date: 20201207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |