CN206319872U - Completion multistage fracturing counts sliding sleeve - Google Patents
Completion multistage fracturing counts sliding sleeve Download PDFInfo
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- CN206319872U CN206319872U CN201621451974.2U CN201621451974U CN206319872U CN 206319872 U CN206319872 U CN 206319872U CN 201621451974 U CN201621451974 U CN 201621451974U CN 206319872 U CN206319872 U CN 206319872U
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- sliding sleeve
- cylinder body
- folding
- pressure break
- counts
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Abstract
The utility model is related to a kind of completion multistage fracturing and counts sliding sleeve, and two-way folding ball seat is located at cylinder interior and its upper end, lower end are respectively equipped with folding pawl, lower folding pawl；The lower end of the lower folding pawl, which is connected, starts sliding sleeve, the longitudinal direction for starting sliding sleeve and cylinder body is provided with for the through hole as fracturing fluid passage during pressure break, it is additionally provided between the outer wall and cylinder body that start sliding sleeve and realizes that the slip started starts shear pin in pressure break, the lower end of the startup sliding sleeve is provided with unidirectional folding ball seat.The utility model can use the pressure break ball of same specification to open the sliding sleeve of different layers position successively, realize the purpose of classification pressure break.
Description
Technical field
The utility model is related to a kind of petroleum drilling completion fracturing unit device, and specifically one kind can realize classification pressure
The completion multistage fracturing for splitting purpose counts sliding sleeve.
Background technology
With developing rapidly for horizontal well multistage fracturing technology in recent years, played in oil and natural gas development process
Huge effect.At present, multistage pitching sliding sleeve fracturing is widely used in straight well layering and horizontal well in segments storey increase design skill
Art --- put into pressure break ball into well in pressing crack construction and open sliding sleeve successively, multiple sliding sleeves are generally arranged in tubing string, are located at
The sliding sleeve of tubing string bottom needs the ball of small diameter when opening, and the sliding sleeve positioned at tubing string top needs what is be relatively large in diameter when opening
Ball, needs to carry out boring mill operation, to recover tubing string full-bore passage, in process of production sometimes for closing after pressing crack construction is complete
Some produces layer, but current technology can not be realized.
The content of the invention
The problem of the utility model is solves existing, it is desirable to provide a kind of completion multistage fracturing counts sliding sleeve.
The technical solution adopted in the utility model includes top connection, cylinder body and the lower cylinder body being sequentially connected, and is pressed by putting into
Blastomere completes to close the operation of production layer, also including two-way folding ball seat, the two-way folding ball seat located at cylinder interior and
Its upper end, lower end are respectively equipped with folding pawl, lower folding pawl, top connection, the inwall of cylinder body be radially provided with for upper folding pawl, under open
Close the annular groove that pawl opens, closed；The lower end of the lower folding pawl, which is connected, starts sliding sleeve, and the longitudinal direction of the startup sliding sleeve and cylinder body is set
Have for the through hole as fracturing fluid passage during pressure break, be additionally provided between the outer wall and cylinder body that start sliding sleeve and realize and open in pressure break
Dynamic slip starts shear pin, and the lower end of the startup sliding sleeve is provided with unidirectional folding ball seat.
Wherein, the lower end of the lower cylinder body is provided with lower contact, and the lower end of the unidirectional folding ball seat is provided with positioning pipe；It is described
The upper end of lower contact is located at the inside of lower cylinder body, is provided between the lower end of the positioning pipe and the upper end of lower contact and retracts spring.
Wherein, the outer wall of the positioning pipe is additionally provided with lock tube, and inwall and the positioning pipe connection of lock tube, its outer wall are close to lower cylinder
The inwall of body.
Wherein, shear pin seat, shear pin seat the cutting provided with fixed lock ring are additionally provided with the travel paths of the positioning pipe
Disconnected pressure break starts shear pin.
Wherein, it is provided between the outer wall of lock tube and the inwall of lower cylinder body when realizing that pressure break starts and drives lock ring motion and real
The lock ring groove of its existing axially position.
Wherein, the pawl valve of the upper folding pawl is in and conjunction state, and is encased in top connection.
Wherein, the inwall longitudinal direction of cylinder body 3, which is provided with to be used to start, play the guiding role what is acted on radial positioning when sliding sleeve is slided
Sliding sleeve positions flat key groove and starts the longitudinally disposed flat key sliding groove of sliding sleeve.
Compared to the prior art, the utility model is passed through using the pressure break ball of same size when opening next stage sliding sleeve
Two-way folding ball seat in upper level sliding sleeve, falling on next stage sliding sleeve opens startup sliding sleeve, after the completion of pressure break, can use
The pressure break ball of same specification opens the startup sliding sleeve of different layers position successively, realizes the purpose of classification pressure break；Top connection, inboard wall of cylinder block
Inwall and annular groove folding pawl, lower folding pawl can be allowed to open, close respectively, with realize by pressure break promotion the two-way folding of ball
Ball seat；Unidirectional folding ball seat can be resetted after operation is completed by pressure release；The top connection and cylinder body are provided with two-way opened
Close ball seat and cross ball count groove, realize that sliding sleeve counts classification；The cylinder body and startup sliding sleeve are longitudinally provided with through hole, it is possible to achieve
Pressure break passage is opened；Sliding sleeve on cylinder body, which starts, cuts off screw, and the Opening pressure for starting sliding sleeve is realized during pressure break；In the cylinder body
Wall is longitudinally positioned to be had sliding sleeve to position flat key groove and starts the longitudinally disposed flat key sliding groove of sliding sleeve, from starting when sliding sleeve is slided
Guide effect；The lock tube sets lock ring groove, realizes that lock tube drives lock ring to move and realize lock tube axially position when pressure break starts.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model one embodiment；
Fig. 1 a are the sectional view in A-A faces in Fig. 1；
Fig. 1 b are the sectional view in B-B faces in Fig. 1；
Fig. 2 is the explanation figure of two-way folding ball seat pitching one-off of the present utility model；
Fig. 3 is the explanation figure of two-way folding ball seat pitching one-off of the present utility model；
Fig. 4 slides structural representation when pressure break passage is in the open position for startup.
Referring to accompanying drawing, 1 is top connection, and 2 be two-way folding ball seat, and 3 be cylinder body, and 4 cut to start sliding sleeve, 5 to slide startup
Nail, 6 be flat key, and 7 be snap ring, and 8 be unidirectional folding ball seat, and 9 be lower cylinder body, and 10 be lock tube, and 11 be lock ring, and 12 be positioning pipe, 13
To retract spring, 14 be shear pin seat, and 15 be lower contact, and 16 be guide finger, and 17 be that pressure break starts shear pin, and 0 is pressure break ball.
Embodiment
In order to make the purpose of the present invention, technical scheme and effect clearer, below in conjunction with accompanying drawing to the utility model
It is further described.
Referring to Fig. 1, Fig. 1 a and Fig. 1 b, the present embodiment includes：Top connection 1, two-way folding ball seat 2, cylinder body 3, startup sliding sleeve
4th, slide and start shear pin 5, flat key 6, snap ring 7, unidirectional folding ball seat 8, lower cylinder body 9, lock tube 10, lock ring 11, positioning pipe 12, retract
Spring 13, shear pin seat 14, lower contact 15, guide finger 16, pressure break start shear pin 17 etc., wherein two-way folding ball seat 2 is located at cylinder body 3
Internal and its upper end, lower end are respectively equipped with folding pawl, lower folding pawl, top connection, the inwall of cylinder body be provided with for upper folding pawl, under
Folding pawl opens, close tongue and rise as high as the banks；The lower end of the lower folding pawl, which is connected, starts sliding sleeve 4, the startup sliding sleeve 4 and cylinder
The longitudinal direction of body 3, which is provided with, is used for the through hole as fracturing fluid passage during pressure break（Connect production layer）, start the outer wall and cylinder body of sliding sleeve 4
It is additionally provided between 3 and realizes that the slip started starts shear pin 5 in pressure break, the lower end for starting sliding sleeve 4 is provided with unidirectional folding ball
Seat 8.
In original state, the upper folding pawl of the two-way folding ball seat 2 is in and conjunction state is encased in top connection 1,
Top connection 1 and cylinder body 3 cross ball count groove provided with two-way folding ball seat 2；The cylinder body 3 and startup sliding sleeve 4 are vertically arranged with through hole,
Fracturing fluid passage during for pressure break；The cylinder body 3 is provided with sliding sleeve and starts the screw of shear pin 5, is realized during pressure break and starts opening for sliding sleeve
Open pressure；The inwall of cylinder body 3 is longitudinally positioned to be had sliding sleeve to position flat key groove and starts the longitudinally disposed sliding groove of flat key 6 of sliding sleeve 4,
It is play the guiding role and radial positioning for starting when sliding sleeve 4 is slided；The lock tube 10 sets lock ring groove, realizes and is locked when pressure break starts
Set 10 drives lock ring 11 to move and realize the axially position of lock tube 10；Lock tube 10 and the shear pin seat 14 is provided with sliding groove, lock tube 10
Provided with the stroke locating slot of guide finger 15.
Referring to Fig. 2, Fig. 2 is two-way folding ball seat pitching one-off schematic diagram, from well head input pressure break ball 0, by pumping
To the upper end of two-way folding ball seat 2, sealing is produced between pressure break ball 0 and two-way folding ball seat 2 --- the fluid on pressure break ball 0
Therefore pressure increase, and then causes two-way folding ball seat 2 descending.The two-way upper end of folding ball seat 2 when reaching ring groove position afterwards
Upper folding pawl is just in open configuration, and pressure break ball 0 drops into the two-way lower end of folding ball seat 2 between the pawl valve opened, and this is at present
Folding pawl is located at inner wall position and in simultaneously conjunction state；Two-way folding ball seat 2 is continued traveling downwardly.Referring to Fig. 3, until two-way folding ball
After 2 lower ends of seat are in annular groove and opened, pressure break ball 0 passes through two-way folding ball seat 2.
Referring to Fig. 4, Fig. 4 is schematic diagram when this startup slip pressure break passage is in the open position.In fracturing work, base
This repetition aforesaid operations, i.e., after well head input pressure break ball 0, two-way folding ball seat 2, which is promoted, starts sliding sleeve 4, cuts sliding sleeve and starts
Shear pin 5, promotes startup sliding sleeve 4 and unidirectional folding ball seat 8 descending, is unidirectionally opened until pressure break ball 0 is fallen into by two-way folding ball seat 2
Close in ball seat 8.When continuing to suppress, unidirectional folding ball seat 8 promotes the pressure break on positioning pipe 12, and then cutting shear pin seat 14 to start and cut
Nail 17, positioning pipe 12 just drives lock tube 10 and lock ring 11 to compress and retracts spring 13, until lower contact is arrived on the lower surface of positioning pipe 12 top
On 15 inner faces, lock tube 10 realizes axially position by lock ring 11.Now just complete the closing of production layer.
The present embodiment can use the pressure break ball 0 of same size when opening next stage sliding sleeve, pass through the two-way of upper level
Folding ball seat 2, which is fallen on next stage sliding sleeve, makes startup sliding sleeve open 4；After the completion of pressure break, unidirectional folding ball seat 8 is answered after pressure release
Position, pressure break ball 0 falls into tubing string bottom.
Embodiment of the present utility model is described above in conjunction with drawings and Examples, the structure that embodiment is provided not structure
Paired limitation of the present utility model, those skilled in the art in the art can be according to needing to adjust, in appended claims
In the range of make various deformations or amendments in protection domain.
Claims (7)
1. a kind of completion multistage fracturing counts sliding sleeve, including top connection, cylinder body and the lower cylinder body being sequentially connected, by putting into pressure break
Ball come complete close production layer operation, it is characterised in that：Also include two-way folding ball seat, the two-way folding ball seat is located at cylinder
Internal portion and its upper end, lower end are respectively equipped with folding pawl, lower folding pawl, top connection, the inwall of cylinder body are radially provided with for above opening
The annular groove that conjunction pawl, lower folding pawl open, closed；The lower end of the lower folding pawl, which is connected, starts sliding sleeve, the startup sliding sleeve and cylinder
The longitudinal direction of body, which is provided with, is used for the through hole as fracturing fluid passage during pressure break, is additionally provided between the outer wall and cylinder body that start sliding sleeve in pressure
Realize that the slip started starts shear pin when splitting, the lower end of the startup sliding sleeve is provided with unidirectional folding ball seat.
2. a kind of completion multistage fracturing according to claim 1 counts sliding sleeve, it is characterised in that：The lower end of the lower cylinder body
Provided with lower contact, the lower end of the unidirectional folding ball seat is provided with positioning pipe；The upper end of the lower contact is located at the inside of lower cylinder body,
It is provided between the lower end of the positioning pipe and the upper end of lower contact and retracts spring.
3. a kind of completion multistage fracturing according to claim 2 counts sliding sleeve, it is characterised in that：The outer wall of the positioning pipe
Lock tube is additionally provided with, inwall and the positioning pipe connection of lock tube, its outer wall are close to the inwall of lower cylinder body.
4. a kind of completion multistage fracturing according to claim 3 counts sliding sleeve, it is characterised in that：The stroke of the positioning pipe
Shear pin seat is additionally provided with path, the cutting pressure break of the shear pin seat provided with fixed lock ring starts shear pin.
5. a kind of completion multistage fracturing according to claim 3 counts sliding sleeve, it is characterised in that：The outer wall of lock tube and lower cylinder
It is provided between the inwall of body and drives lock ring to move when realizing that pressure break starts and realize the lock ring groove of its axially position.
6. a kind of completion multistage fracturing according to claim 1,2,3,4 or 5 counts sliding sleeve, it is characterised in that：On described
The pawl valve of folding pawl is in and conjunction state, and is encased in top connection.
7. a kind of completion multistage fracturing according to claim 1,2,3,4 or 5 counts sliding sleeve, it is characterised in that：In cylinder body 3
Wall longitudinal direction, which is provided with, to be used to start play the guiding role when sliding sleeve is slided the sliding sleeve positioning flat key groove acted on radial positioning and startup
The longitudinally disposed flat key sliding groove of sliding sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621451974.2U CN206319872U (en) | 2016-12-28 | 2016-12-28 | Completion multistage fracturing counts sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621451974.2U CN206319872U (en) | 2016-12-28 | 2016-12-28 | Completion multistage fracturing counts sliding sleeve |
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| Publication Number | Publication Date |
|---|---|
| CN206319872U true CN206319872U (en) | 2017-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201621451974.2U Active CN206319872U (en) | 2016-12-28 | 2016-12-28 | Completion multistage fracturing counts sliding sleeve |
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| CN (1) | CN206319872U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109163964A (en) * | 2018-09-17 | 2019-01-08 | 中国石油天然气股份有限公司 | Method and device for testing sleeve starting sliding sleeve |
| CN111201368A (en) * | 2017-12-21 | 2020-05-26 | 哈里伯顿能源服务公司 | Multi-zone actuation system using wellbore darts |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
-
2016
- 2016-12-28 CN CN201621451974.2U patent/CN206319872U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111201368A (en) * | 2017-12-21 | 2020-05-26 | 哈里伯顿能源服务公司 | Multi-zone actuation system using wellbore darts |
| US11268363B2 (en) | 2017-12-21 | 2022-03-08 | Halliburton Energy Services, Inc. | Multi-zone actuation system using wellbore darts |
| CN111201368B (en) * | 2017-12-21 | 2022-08-23 | 哈里伯顿能源服务公司 | Multi-zone actuation system using wellbore darts |
| CN109163964A (en) * | 2018-09-17 | 2019-01-08 | 中国石油天然气股份有限公司 | Method and device for testing sleeve starting sliding sleeve |
| CN109163964B (en) * | 2018-09-17 | 2020-10-09 | 中国石油天然气股份有限公司 | Method and device for testing sleeve starting sliding sleeve |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
| CN112049605B (en) * | 2020-09-26 | 2022-11-01 | 东北石油大学 | Underground full-bore infinite-stage ball-throwing counting fracturing sliding sleeve |
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