CN204984354U - Unlimited level fracturing sliding sleeve of full latus rectum - Google Patents
Unlimited level fracturing sliding sleeve of full latus rectum Download PDFInfo
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- CN204984354U CN204984354U CN201520317653.2U CN201520317653U CN204984354U CN 204984354 U CN204984354 U CN 204984354U CN 201520317653 U CN201520317653 U CN 201520317653U CN 204984354 U CN204984354 U CN 204984354U
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Abstract
The utility model relates to an unlimited level fracturing sliding sleeve of full latus rectum, the barrel that top connection, shell and the lower clutch connected including the order formed, but and the ball seat that forms of elastic sleeve, inside sliding sleeve reducing ball seat and sliding sleeve and the reset spring of restoring to the throne be out of shape the mechanism, the elastic sleeve is located in the top connection, it is alternative through the fracturing ball or accept the fracturing ball through zooming, inside sliding sleeve is located the elastic sleeve lower part, but the reducing ball seat lies in inside sliding sleeve lower part, and it is accepted or release the fracturing ball through playing the claw, the ball seat warp the mechanism with but the reducing ball seat is connected, its drive but the reciprocal transformation between open type ball seat and the closed ball seat is realized to the reducing ball seat. But through set up elastic sleeve reducing ball seat with and the improvement of member on every side realized adopting same size low -density fracturing ball can full the latus rectum opening a plurality of grades of sliding sleeves, realize becoming more meticulous of reservoir and transform and provide later stage workover's accessible passageway.
Description
Technical field
The utility model belongs to staged fracturing of horizontal well construction tool field, particularly relates to sliding bush apparatus in the construction of a kind of staged fracturing of horizontal well.
Background technology
Staged fracturing of horizontal well technology is the engineering grown up along with the exploitation of shale gas, tight gas, fine and close wet goods unconventionaloil pool.Technology the most frequently used is at present open-hole horizontal well packer+sliding sleeve technology, and it is opened fracturing sliding bush by the ball dropping into different-diameter and implements operation.Current technology has the following disadvantages: realize open sliding sleeve because the ball and ball seat that need input different-diameter coordinate, segmentation progression is limited; Tubing string cannot realize full-bore, increases pressure break frictional resistance; Follow-up well workover construction inevitably needs the ball seat boring sliding sleeve, and construction complexity adds danger.
Utility model content
In view of the foregoing, the application provides a kind of full-bore infinite stages sliding sleeve, by transforming existing sliding bush apparatus, realizing fracturing sliding bush and realizing tubing string full-bore, reduces pressure break frictional resistance, and provides the Wheelchair Accessible of later stage workover treatment; Opening sliding sleeve by dropping into same diameter ball, avoiding number of fragments to be subject to the differential restriction of ball.
For realizing above-mentioned utility model object, the technical scheme that the application provides is:
A kind of full-bore infinite stages fracturing sliding bush, comprise the cylindrical shell that the top connection, shell and the lower contact that are linked in sequence are formed, and resilient sleeve, described resilient sleeve is positioned at described top connection, its by convergent-divergent alternative by pressure break ball or accept pressure break ball and when pressure break ball by after realize full-bore; Inner sliding sleeve, described inner sliding sleeve is positioned at described resilient sleeve bottom, and its promotion lower slider in resilient sleeve also realizes inner through with annular space of oil pipe; Reducing ball seat, described reducing ball seat is positioned at inner sliding sleeve bottom, and it is accepted or release pressure break ball by playing pawl, and when pressure break ball by after its bullet pawl open and realize full-bore; Resetting sliding sleeve, described resetting sliding sleeve is positioned at described reducing ball seat bottom; Back-moving spring, described back-moving spring coordinates with described resetting sliding sleeve and realizes described reducing ball seat and transform between open type ball seat and closed ball seat.
Further, also comprise overcoat, described overcoat is positioned at described shell, and the lock dog of position-limiting action has been arranged at its top, and bottom, to projecting inward formation bulge loop, forms groove between described lock dog and bulge loop; Projection is arranged at described reducing ball seat top, and described projection is between described lock dog and described bulge loop, and it can slide along being formed between described lock dog and bulge loop groove.
Further, described outer putting has altogether three grooves, when pressure break ball is by after sliding sleeve at the corresponding levels, the bullet pawl of described reducing ball seat can on move and fall into groove type bottom and become full-bore.
Further, described back-moving spring is between described projection and described bulge loop, and its one end and described bulge loop wall are fixed, and the other end and described projection are fixed.
Further, also comprise plug ring, described plug ring is embedded on described resetting sliding sleeve, and it can slide with described resetting sliding sleeve, and opens when described resetting sliding sleeve moves in described lower contact and locked by described resetting sliding sleeve.
Further, described resilient sleeve comprises top bullet pawl and bottom bullet pawl, and described top connection inwall has annular groove, and described top bullet pawl and bottom bullet pawl realize convergent-divergent by coordinating with the annular groove in described top connection.
Further, the quantity of described annular groove equals sliding sleeve progression+1, and wherein, the length of annular groove is greater than other annular groove length bottom, described resilient sleeve move to bottom ring groove position time, its top bullet pawl and bottom bullet pawl all open formation full-bore.
Further, the pressure break ball of described sliding bush apparatus is same size.
Further, described pressure break ball is triggered by machinery or hydraulic pressure triggering.
Compared with prior art, it has following beneficial effect to technique scheme:
The pressure break ball size that the utility model uses is identical, and same size low-density ball can open some sliding sleeves, and pressure break hop count is infinitely increased, and realize the transformation that becomes more meticulous of reservoir.
The utility model devises resilient sleeve part, can optionally cross ball or accept ball.
Top connection inwall of the present utility model has some ring grooves, becomes to coordinate, control opening and retracting of resilient sleeve bullet pawl with the bullet claw type of resilient sleeve.
The utility model devises reducing ball seat, both can accept pressure break ball, can also pressure break ball is counter arrange after automatically open formation full-bore.
Accompanying drawing explanation
Fig. 1 is sliding bush apparatus half sectional view;
Fig. 2 is the fracturing process schematic diagram for two-stage sliding sleeve;
Reference numeral: 1-top connection, 101-annular groove, 2-pressure break ball, 3-resilient sleeve, 301-top bullet pawl, 302-bottom bullet pawl, the inner sliding sleeve of 4-, 401-endoporus, 5-sealing ring, 6-lock dog, 7-shell, 701-exit orifice, 8-reducing ball seat, 801-projection, 9-back-moving spring, 10-resetting sliding sleeve, 11-plug ring, 12-overcoat, 1201-bulge loop, 13-lower contact, 14-first pressure break ball, 15-subordinate sliding sleeve, 16-second pressure break ball.
Detailed description of the invention
Clearly understand for making goal of the invention of the present utility model, technical scheme and beneficial effect, below in conjunction with accompanying drawing, embodiment of the present utility model is described, it should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined mutually.
Core of the present utility model is, fracturing sliding bush in fractured well is transformed, by arrange scalable resilient sleeve and deformable reducing ball seat and to resilient sleeve and reducing ball seat around the improvement of part, thus realize adopting same size low-density pressure break ball can open some grades of sliding sleeves and realize full-bore, pressure break hop count is infinitely increased, realizes the transformation that becomes more meticulous of reservoir.
Specific embodiment is see Fig. 1, as shown in Figure 1, a kind of full-bore infinite stages sliding sleeve, the resilient sleeve 3 comprising the top connection 1 be linked in sequence, cylindrical shell that shell 7 and lower contact 13 are formed and be positioned at inner barrel, inner sliding sleeve 4, reducing ball seat 8 deformation mechanism that reducing ball seat 8, overcoat 12 and back-moving spring 9 and resetting sliding sleeve 10 are formed.Shell 7 and top connection 1 and lower contact 13 are all threaded, and in order to ensure good sealing, are provided with sealing ring 5 in junction.Resilient sleeve 3 is passed through pressure break ball by convergent-divergent alternative or is accepted pressure break ball; Reducing ball seat 8 is positioned at inner sliding sleeve 4 bottom, it has bullet pawl, is accepted or release pressure break ball by the convergent-divergent playing pawl; Ball seat deformation mechanism is connected with reducing ball seat, and its drive reducing ball seat realizes the mutual conversion between open type ball seat and closed ball seat.Overcoat is positioned at shell, and the lock dog 6 of position-limiting action has been arranged at its top, and bottom, to projecting inward formation bulge loop 1201, forms groove between lock dog 6 and bulge loop 1201.Reducing ball seat top has protruding 801, and protruding 801 between lock dog 6 and bulge loop 1201, and it can slide along being formed between lock dog and bulge loop 1201 groove.Back-moving spring 9 is between protruding 801 and bulge loop 1201, and resetting sliding sleeve 10 is positioned at reducing ball seat 8 bottom.
Further, on overcoat 12, one has three grooves, when pressure break ball is by after sliding sleeve at the corresponding levels, the bullet pawl of reducing ball seat 8 can under the drive of ball seat deformation mechanism on move and fall into groove type bottom and become full-bore (for Fig. 1, termination, top connection 1 place is upper, under termination, lower contact 13 place is).
It should be noted that, in order to illustrate that the time movement flexible of pressure break ball 2 in sliding sleeve overlaps the change of 3, in Fig. 1, schematically overlapping 3 positions in slip placed a pressure break ball 2.
In the specific implementation, above-mentioned sliding bush apparatus also comprises plug ring 11, and plug ring 11 is embedded on resetting sliding sleeve 10, and it can slide with resetting sliding sleeve 10, and open resetting sliding sleeve locking when resetting sliding sleeve moves in lower contact, lower contact 13 has the groove opened for plug ring 11.
During specific embodiment, resilient sleeve 3 comprises top bullet pawl 301 and bottom bullet pawl 302, and top connection 1 inwall has annular groove 101, and top bullet pawl 301 and bottom bullet pawl 302 realize convergent-divergent by coordinating with the annular groove 101 in top connection 1.Wherein, the quantity of joint inner groove depends on the progression of fracturing sliding bush, and the pass between itself and fracturing sliding bush progression is that the quantity of top connection inner groove equals sliding sleeve progression+1, is two-stage sliding sleeve in the present embodiment, and the quantity of annular groove is 3.It should be noted that, annular groove is (for Fig. 1 bottom, termination, top connection 1 place is upper, under termination, lower contact 13 place is) length be greater than other annular groove length, when resilient sleeve 3 move to bottom ring groove position time, its top bullet pawl 301 and bottom bullet pawl 302 all open formation full-bore.
Further, inner sliding sleeve offers endoporus 401, it is corresponding with the exit orifice 701 on shell 7, to realize the through of oil pipe inside and annular space when inner sliding sleeve 4 promotes to glide to walk in resilient sleeve 3 when endoporus 401 is relative with the exit orifice 701 on shell on it.
During concrete enforcement, slipper seal between inner sliding sleeve and cylinder inboard wall.
During concrete enforcement, pressure break ball can be triggered by machinery or be triggered by hydraulic pressure.
In order to below clearer description for two-stage sliding sleeve, introduce when pressure break ball moves in sliding sleeve, above-mentioned sliding bush apparatus all parts is at the change procedure of different phase.
As shown in Figure 2, Fig. 2 is for two-stage sliding sleeve, demonstrates the change procedure of the above-mentioned sliding bush apparatus of fracturing process stage by stage:
Shown in Fig. 2 (a) He (b), after instrument enters well, under of the fracturing fluid promotion, first pressure break ball 14 promotes resilient sleeve 3 and moves down, first pressure break ball 14 moves down along resilient sleeve 3 simultaneously, when the first pressure break ball 14 arrives the top of resilient sleeve 3, the annular groove 101 outer top bullet pawl 301 that the top bullet pawl 301 of resilient sleeve 3 is positioned at top connection 1 is in contraction state, as shown in (a) in Fig. 2; When the first pressure break ball 14 moves to the middle part of resilient sleeve 3, the top bullet pawl 301 of resilient sleeve 3 arrives in the annular groove 101 of top connection 1, and top bullet pawl 301 outwards flicks, and the first pressure break ball 14 can pass through bullet pawl herein, as shown in (b) in Fig. 2.
See Fig. 2 (c), by the first pressure break ball 14 of resilient sleeve 3 along through sliding bush apparatus under of the fracturing fluid promotion, move to subordinate's sliding sleeve 15, now the top bullet pawl 301 of resilient sleeve 3 is in compressive state, and bottom bullet pawl 302 is in open mode.
See Fig. 2 (d), the second pressure break ball 16, under of the fracturing fluid promotion, enters resilient sleeve 3, and now the top bullet pawl 301 of resilient sleeve 3 is in compressive state, and bottom bullet pawl 302 is in open mode.
See Fig. 2 (e), second pressure break ball 16 is mobile in resilient sleeve 3 under of the fracturing fluid promotion, promote resilient sleeve 3 to move down simultaneously, simultaneously promote resilient sleeve 3 internally sliding sleeve 4 move, when the second pressure break ball 16 moves in the middle part of resilient sleeve 3, the top bullet pawl 301 of resilient sleeve 3 enters in the annular groove 101 of top connection 1, is in open mode, the annular groove 101 that bottom bullet pawl 302 shifts out top connection 1 is in compressive state, and inner sliding sleeve 4 is pushed downward promotion simultaneously.
See Fig. 2 (f), second pressure break ball 16 is mobile in resilient sleeve 3 under of the fracturing fluid promotion, simultaneously resilient sleeve 3 promotes inner sliding sleeve 4 and moves down, when the second pressure break ball 16 is completely by resilient sleeve 3, top bullet pawl 301 and the bottom bullet pawl 302 of resilient sleeve 3 are all opened, realize the full-bore of resilient sleeve position, now, the endoporus 401 of inner sliding sleeve 4 is just right with the exit orifice 701 on shell 7, realize inner through with annular space of oil pipe, inner sliding sleeve 4 promotes reducing ball seat 8 and is deformed into a closed ball seat.
See Fig. 2 (g), under pressure break action of hydraulic force, the second pressure break ball 16 drives the reducing ball seat 8 be closed to continue to move down, and when reducing ball seat 8 moves to plug ring 11 position, plug ring 11 is opened, and blocks resetting sliding sleeve 10.
See Fig. 2 (h), the row of returning after pressure break terminates, pressure break ball return discharge opeing promote under leave reducing ball seat 8, reducing ball seat 8 moves up under the effect of back-moving spring 9, it plays pawl and falls in the groove bottom of overcoat 12, the bullet pawl of reducing ball seat opens, and reducing ball seat internal diameter is greater than fracturing string internal diameter, realizes the full-bore in sliding sleeve.
Clearly understand for making goal of the invention of the present utility model, technical scheme and beneficial effect, below in conjunction with accompanying drawing, embodiment of the present utility model is described, it should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can be combined mutually.
Claims (9)
1. a full-bore infinite stages fracturing sliding bush, comprises the cylindrical shell that the top connection, shell and the lower contact that are linked in sequence are formed, it is characterized in that: also comprise,
Resilient sleeve, described resilient sleeve is positioned at described top connection, its by convergent-divergent alternative by pressure break ball or accept pressure break ball and when pressure break ball by after realize full-bore;
Inner sliding sleeve, described inner sliding sleeve is positioned at described resilient sleeve bottom, and its promotion lower slider in resilient sleeve also realizes inner through with annular space of oil pipe;
Reducing ball seat, described reducing ball seat is positioned at inner sliding sleeve bottom, and it is accepted or release pressure break ball by playing pawl, and when pressure break ball by after its bullet pawl open and realize full-bore;
Resetting sliding sleeve, described resetting sliding sleeve is positioned at described reducing ball seat bottom;
Back-moving spring, described back-moving spring coordinates with described resetting sliding sleeve and realizes described reducing ball seat and transform between open type ball seat and closed ball seat.
2. full-bore infinite stages fracturing sliding bush as claimed in claim 1, it is characterized in that: also comprise overcoat, described overcoat is positioned at described shell, and the lock dog of position-limiting action has been arranged at its top, bottom, to projecting inward formation bulge loop, forms groove between described lock dog and bulge loop; Projection is arranged at described reducing ball seat top, and described projection is between described lock dog and described bulge loop, and it can slide along being formed between described lock dog and bulge loop groove.
3. full-bore infinite stages fracturing sliding bush as claimed in claim 2, is characterized in that: described outer putting has altogether three grooves, when pressure break ball is by after sliding sleeve at the corresponding levels, the bullet pawl of described reducing ball seat can on move and fall into groove type bottom and become full-bore.
4. full-bore infinite stages fracturing sliding bush as claimed in claim 2 or claim 3, is characterized in that: described back-moving spring is between described projection and described bulge loop, and its one end and described bulge loop wall are fixed, and the other end and described projection are fixed.
5. full-bore infinite stages fracturing sliding bush as claimed in claim 4, it is characterized in that: also comprise plug ring, described plug ring is embedded on described resetting sliding sleeve, and it can slide with described resetting sliding sleeve, and opens when described resetting sliding sleeve moves in described lower contact and locked by described resetting sliding sleeve.
6. full-bore infinite stages fracturing sliding bush as claimed in claim 1, it is characterized in that: described resilient sleeve comprises top bullet pawl and bottom bullet pawl, described top connection inwall has annular groove, and described top bullet pawl and bottom bullet pawl realize convergent-divergent by coordinating with the annular groove in described top connection.
7. full-bore infinite stages fracturing sliding bush as claimed in claim 6, it is characterized in that: the quantity of described annular groove equals sliding sleeve progression+1, wherein, the length of annular groove is greater than other annular groove length bottom, described resilient sleeve move to bottom ring groove position time, its top bullet pawl and bottom bullet pawl all open formation full-bore.
8. full-bore infinite stages fracturing sliding bush as claimed in claim 1, is characterized in that: the pressure break ball of described sliding bush apparatus is same size.
9. full-bore infinite stages fracturing sliding bush as claimed in claim 1, is characterized in that: described pressure break ball is triggered by machinery or hydraulic pressure triggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317653.2U CN204984354U (en) | 2015-05-15 | 2015-05-15 | Unlimited level fracturing sliding sleeve of full latus rectum |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317653.2U CN204984354U (en) | 2015-05-15 | 2015-05-15 | Unlimited level fracturing sliding sleeve of full latus rectum |
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| CN204984354U true CN204984354U (en) | 2016-01-20 |
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| CN201520317653.2U Active CN204984354U (en) | 2015-05-15 | 2015-05-15 | Unlimited level fracturing sliding sleeve of full latus rectum |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194110A (en) * | 2016-09-23 | 2016-12-07 | 中国石油集团西部钻探工程有限公司 | Spin Control stepless pitching fracturing sliding bush |
| CN107143307A (en) * | 2017-07-20 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of sliding sleeve fracturing device |
| CN108590615A (en) * | 2018-03-03 | 2018-09-28 | 东北石油大学 | A kind of multistage fracturing pitching control tool |
| CN108798593A (en) * | 2017-05-04 | 2018-11-13 | 北京博德世达石油技术股份有限公司 | circulating valve |
| CN110388197A (en) * | 2019-08-21 | 2019-10-29 | 中国石油大学(北京) | Water-jet infinite stages fracturing device and fracturing process |
| CN111155978A (en) * | 2020-02-23 | 2020-05-15 | 吉林金祚石油科技服务有限公司 | Oil field horizontal well multistage fracturing tubular column structure |
| CN113153218A (en) * | 2021-05-18 | 2021-07-23 | 燕山大学 | Full-bore infinite-stage fracturing sliding sleeve |
| CN113719256A (en) * | 2021-09-17 | 2021-11-30 | 西南石油大学 | Variable-diameter ball seat well cementation sliding sleeve for infinite-stage fracturing of horizontal well |
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2015
- 2015-05-15 CN CN201520317653.2U patent/CN204984354U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194110A (en) * | 2016-09-23 | 2016-12-07 | 中国石油集团西部钻探工程有限公司 | Spin Control stepless pitching fracturing sliding bush |
| CN108798593A (en) * | 2017-05-04 | 2018-11-13 | 北京博德世达石油技术股份有限公司 | circulating valve |
| CN107143307A (en) * | 2017-07-20 | 2017-09-08 | 中国石油化工股份有限公司 | A kind of sliding sleeve fracturing device |
| CN108590615A (en) * | 2018-03-03 | 2018-09-28 | 东北石油大学 | A kind of multistage fracturing pitching control tool |
| CN108590615B (en) * | 2018-03-03 | 2023-06-27 | 东北石油大学 | Multistage fracturing ball-throwing control tool |
| CN110388197A (en) * | 2019-08-21 | 2019-10-29 | 中国石油大学(北京) | Water-jet infinite stages fracturing device and fracturing process |
| CN111155978A (en) * | 2020-02-23 | 2020-05-15 | 吉林金祚石油科技服务有限公司 | Oil field horizontal well multistage fracturing tubular column structure |
| CN113153218A (en) * | 2021-05-18 | 2021-07-23 | 燕山大学 | Full-bore infinite-stage fracturing sliding sleeve |
| CN113719256A (en) * | 2021-09-17 | 2021-11-30 | 西南石油大学 | Variable-diameter ball seat well cementation sliding sleeve for infinite-stage fracturing of horizontal well |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee after: China Oilfield Services Limited Patentee after: China Offshore Oil Group Co., Ltd. Address before: 100010 Chaoyangmen North Street, Dongcheng District, Dongcheng District, Beijing Co-patentee before: China Oilfield Services Limited Patentee before: China National Offshore Oil Corporation |
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| CP01 | Change in the name or title of a patent holder |