CN110145289A - It is a kind of without differential full-bore fracturing sliding bush - Google Patents
It is a kind of without differential full-bore fracturing sliding bush Download PDFInfo
- Publication number
- CN110145289A CN110145289A CN201810139682.2A CN201810139682A CN110145289A CN 110145289 A CN110145289 A CN 110145289A CN 201810139682 A CN201810139682 A CN 201810139682A CN 110145289 A CN110145289 A CN 110145289A
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- Prior art keywords
- sliding sleeve
- housing
- inner sliding
- bore
- sliding
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- 210000000078 claw Anatomy 0.000 claims abstract description 31
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 9
- 230000008602 contraction Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 7
- 239000002195 soluble material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000001109 blastomere Anatomy 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
- E21B34/14—Valve arrangements for boreholes or wells in wells operated by movement of tools, e.g. sleeve valves operated by pistons or wire line tools
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
- Springs (AREA)
Abstract
The present invention relates to a kind of without differential full-bore fracturing sliding bush.Including the outer barrel that top connection and housing, lower contact once connect, and the sliding ball seat, the inner sliding sleeve component that are arranged in outer barrel, in which: outer barrel top is equipped with multiple annular slots and multiple pressure break holes, and housing lower end is equipped with interior shoulder；Sliding ball seat is to be at least two sections of elastic claw connection compositions, constitutes sliding plug cooperation while elastic claw and outer barrel upper inside wall are slidably matched with annular slot；Inner sliding sleeve component includes upper inner sliding sleeve, middle inner sliding sleeve, lower inner sliding sleeve and spring, upper shear pin, lower shear pin, and sliding ball seat and the cooperation of inner sliding sleeve component realize that setting, the pressure break hole of sliding ball seat are opened and pressure break ball discharges.Advantage of the invention: pressure break ball and ball seat are without differential, it can be achieved that full-bore, reduces fracturing work cost；Without using soluble material, it is not necessarily to lower specific purpose tool switching sliding sleeve, only need to put into the i.e. openable all sliding sleeves of pressure break ball, simple process is high-efficient.
Description
Technical field
The present invention relates to a kind of full-bore pressure break of underground fracture tool, especially horizontal well multistage subsection pressure break dresses
It sets.
Background technique
In recent years, the 70% of domestic crude oil incremental reserves belongs to low-permeability oil deposit, and mining method, oil well production dynamic show
Particularity out.Realize effectively employing for reserves, greatly improving well yield is that unconventional petroleum resources are urgently to be solved asks for exploitation
Topic.Horizontal well multistage subsection fracturing technique has become a kind of unconventional and Low permeable oil and gas reservoirs the effective technology means of exploitation.Its
In, full-bore pressure break can be realized with it compared with big orifice in tubing string, and the development conducive to later period production management as the technology becomes
One of gesture.
Currently, there are mainly four types of the common technologies of realization full-bore pressure break.First is that lower inner tube bore and is removed after the completion of pressure break
Operation bores and removes remaining ball seat or bridge plug.But it bores except operation increases pressure break cost, and there are bit freezing risks.Under second is that
Enter specific purpose tool and the cooperation of preset sliding sleeve carries out fracturing work.Tripping in specific purpose tool needs positioning operation, and the later period also needs to salvage
Tool, technique are more complex.Third is that certain components of tool are manufactured using soluble material, can voluntarily be dissolved after pressure break is complete.Fourth is that even
Continuous oil pipe hydraulic jetting fracturing technology.This technology is limited due to using coiled tubing, higher cost, and pressure break depth.
Summary of the invention
The purpose of the present invention is to solve above-mentioned technical problems, provide a kind of without boring except operation and efficiently without differential
Full-bore fracturing sliding bush.
Technical solution of the present invention includes:
It is a kind of without differential full-bore fracturing sliding bush, including the outer barrel that top connection and housing, lower contact once connect, and setting
Sliding ball seat, inner sliding sleeve component in outer barrel, in which: the outer barrel upper inside wall is axially spaced to be equipped with multiple annulars
Card slot is circumferentially with multiple pressure break holes on the overcoat wall below annular slot, and the housing lower end is equipped with interior shoulder, outside
Middle section constitutes annular groove after shoulder is connect with lower contact in covering；The sliding ball seat is that multistage elasticity dog collar successively connects along axial direction
Composition is connect, the lower part of every section of elastic dog collar is respectively equipped with several elastic claws that can radially stretch, and the lower end of elastic claw is equipped with
Fixture block, the elastic claw of every section of elastic dog collar meets in contraction state constitutes axial sliding fit, every section of elasticity with outer casing inner wall
The elastic claw of dog collar meets the fixture block of its lower end in stretched condition and aforementioned toroidal card slot constitutes sliding plug cooperation；In described
Slide bushing assembly includes upper inner sliding sleeve, middle inner sliding sleeve and lower inner sliding sleeve, and upper inner sliding sleeve is fixed on the pressure of housing by the sealing of upper shear pin
At ceasma, upper inner sliding sleeve slides axially with housing composition seal cooperation simultaneously, and middle inner sliding sleeve upper end is overlapped under inner sliding sleeve
End, middle inner sliding sleeve middle part outer wall are equipped with outer shoulder, and middle inner sliding sleeve lower end is connect by lower shear pin with lower inner sliding sleeve upper end, lower interior
Sliding sleeve is located at lower contact and housing junction and following part, and lower inner sliding sleeve outer wall is equipped with outer convex edge, the outer convex edge of lower inner sliding sleeve
With spring be equipped with after shoulder in housing is connect with lower contact constitute annular groove in, lower inner sliding sleeve respectively with housing lower end
The interior shoulder in portion and lower contact composition slide axially；Sliding ball seat and upper inner sliding sleeve and middle inner sliding sleeve respectively constitute blocking cooperation.
Further, the housing forms after being connected by upper housing with lower housing, and multiple annular slots are arranged in upper housing
Inner surface and along axial equidistantly distributed.Or the housing connected by upper housing with lower housing after form, multiple annular slots
In an engaging portion that top connection Yu upper housing be set, it is in addition several to be arranged in upper housing inner surface, multiple annular slots
Along axial equidistantly distributed.
Horn opening is equipped between the elastic claw of further every section of elastic dog collar lower part.
Further, the annular slot is 2 or more, and for structure is identical trapezoidal or arc.
Above-mentioned technical proposal further include:
It is a kind of without differential full-bore fracturing sliding bush, including it is multistage above-mentioned without differential full-bore fracturing sliding bush cascaded structure, i.e., the 1st
The 2nd grade of grade fracturing sliding bush and others are extremelyNGrade fracturing sliding bush is sequentially connected in series, whereinNFor positive integer, the 1st grade of fracturing sliding bush
ToNThe annular slot number of grade fracturing sliding bush increases an annular slot according to every increase level-one and is gradually incremented by.
Further, the 1st grade of fracturing sliding bush and it is other 2nd grades extremelyNGrade fracturing sliding bush passes sequentially through packer series connection
Composition.
The beneficial effects of the present invention are: 1. pressure break ball and ball seat after pressing crack construction is complete, remove operation without boring without differential
It realizes full-bore, reduces fracturing work cost, be conducive to later period production management；2. without using soluble material, be not necessarily to down it is dedicated
Tool switch sliding sleeve, need to only put into the i.e. openable all sliding sleeves of pressure break ball of multiple identical sizes, and simple process is high-efficient.
It is described in further details below in conjunction with attached drawing.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram without differential full-bore fracturing sliding bush of the present invention；
Fig. 2 is the cross-sectional view in Fig. 1 at A-A；
Fig. 3 is the cross-sectional view in Fig. 1 at B-B；
Fig. 4 is the cross-sectional view in Fig. 1 at C-C；
Fig. 5 is sliding ball socket structure schematic diagram in Fig. 1；
Fig. 6 is without structural schematic diagram when differential full-bore fracturing sliding bush is opened, pressure break ball is set；
Fig. 7 is structural schematic diagram when realizing full-bore without differential full-bore fracturing sliding bush；
Fig. 8 is another kind of the present inventionNStructural schematic diagram when grade is without the series connection of differential full-bore fracturing sliding bush；
In Fig. 1-8,1. top connections, 2. sliding ball seats, 3.6. elastic claw, housing on 5., inner sliding sleeve on 7., shear pin on 8., in 9.
Inner sliding sleeve, 10. lower housings, 11. lower inner sliding sleeves, 12. springs, 13. lower contacts, 14. dovetail grooves (i.e. claim and Fang Ming content
One of annular slot), 4.15.16.17.19. sealing ring, 18. lower shear pins, 20. pressure break holes, 21. horn openings, 22.
Pressure break ball, 23. boreholes wall, 24.NGrade without differential full-bore fracturing sliding bush, 26. the 2nd grades without differential full-bore fracturing sliding bush, 28.
1st grade without differential full-bore fracturing sliding bush, 25.27.29. packer, 30. pressure differences open sliding sleeve, 901 outer shoulders, platform in 1001.
Shoulder.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples.
Embodiment 1, referring to Fig.1, it is a kind of without differential full-bore fracturing sliding bush include: top connection 1, sliding ball seat 2, upper housing
5, upper inner sliding sleeve 7, upper shear pin 8, middle inner sliding sleeve 9, lower housing 10, lower inner sliding sleeve 11, spring 12, lower contact 13, lower shear pin 18 with
And sealing ring 4,15,16,17,19 forms.
The upper end of upper housing 5 couple with top connection 1 by screw thread, and is equipped with sealing ring 4, lower end by screw thread with it is lower outside
10 connection of set, and it is equipped with sealing ring 15, inner surface has 3 dovetail grooves (or arc groove) 14；1 inner surface of top connection has 1
Dovetail groove 14；The lower end of lower housing 10 is coupled by screw thread with lower contact 13, and is equipped with sealing ring 19.Slide the middle part of ball seat 2
There are several elastic claws 3,6 moved radially respectively with lower part, under original state, elastic claw 3 is in radially contracted state,
Elastic claw 6 is located in dovetail groove 14.Upper inner sliding sleeve 7 is fixed on inside lower housing 10 by upper shear pin 8, the upper end and upper housing 5
Contact, lower end is placed on the upper end of middle inner sliding sleeve 9；Sliding sealing surface between upper inner sliding sleeve 7 and lower housing 10 is equipped with sealing ring
16,17；Lower inner sliding sleeve 11 is set to inside lower contact 13, and the upper end is placed on the lower end of middle inner sliding sleeve 9, and solid by lower shear pin 18
It is fixed；Spring 12 is set in the annular space that lower inner sliding sleeve 11 is constituted with lower contact 13.
6 pressure break holes 20 are arranged at the top that Fig. 2 show lower housing 10.
Fig. 3 show inner sliding sleeve 7 and is fixed on inside lower housing 10 by 6 upper shear pins 8.
It is fixed by 6 lower shear pins 18 that Fig. 4 show lower 11 upper end of inner sliding sleeve and the lower end of middle inner sliding sleeve 9.
Fig. 5 show sliding ball seat 2 middle part and under be equipped with horn opening 21 between each elastic claw 3 not.
Without the working principle that differential full-bore pressure break is sliding shown in Fig. 1 are as follows: well head launches a pressure break ball 22, and pressure break ball 22 arrives
It is stuck at up to the elastic claw 3 at 2 middle part of sliding ball seat, plays pressure；When pressure reaches certain value, pressure break ball 22 drives sliding ball seat
2 move downward；It slides in 2 motion process of ball seat, the elastic claw 6 of sliding 2 lower part of ball seat can be from the 1st dovetail groove 14(from lower past
Upper number) in remove and it is radially contracted become a ball seat, while slide 2 top of ball seat elastic claw 3 enter the 4th dovetail groove
In 14, pressure break ball 22 is discharged and is fallen on the elastic claw 6 after shrinking；Play pressure again, pressure break ball 22 continue to drive sliding ball seat 2 to
Lower movement, until the elastic claw 6 of sliding 2 lower part of ball seat is contacted with upper inner sliding sleeve 7；When pressure reaches setting value, upper 8 quilt of shear pin
It cuts, and then upper inner sliding sleeve 7 is pushed to move downwardly together, until the elastic claw 6 of sliding 2 lower part of ball seat touches middle inner sliding sleeve 9；
When pressure reaches setting value, lower shear pin 18 is cut, and inner sliding sleeve 9 moves downwardly together in drive；9 outer surface of inner sliding sleeve in the middle
Shoulder 901 when touching lower inner sliding sleeve 11, push one with moving down, spring 12 is compressed；Until upper 7 lower end of inner sliding sleeve
When being contacted with the shoulder 1001 of lower 10 lower end of housing, pressure break ball 22, sliding ball seat 2, upper inner sliding sleeve 7, middle inner sliding sleeve 9 and lower interior cunning
Set 11 stops moving down；At this point, sliding sleeve is opened, continue to suppress, pressure break ball 22 is set, can the corresponding stratum of the pressure break sliding sleeve.
After the completion of pressure break, well head pressure release, lower inner sliding sleeve 11 moves upwards under the restoring force effect of spring 12, pushes simultaneously
Middle inner sliding sleeve 9 moves upwardly together, and then sliding ball seat 2 will be pushed to move up certain distance, so that sliding 2 lower part of ball seat
Elastic claw 6 is detached from upper inner sliding sleeve 7, and becomes free state from contraction state, and pressure break ball 22 is released, and can be fallen on shaft bottom or be returned
It is discharged to well head, is realized in fracturing sliding bush compared with big orifice.
Fig. 6 show structural schematic diagram when fracturing sliding bush is opened, pressure break ball 22 is set, and upper shear pin 8 and lower shear pin 18 are equal
It is cut, spring 12 is compressed, and the pressure break hole 20 on lower housing 10 is exposed, and the elastic claw 6 for sliding 2 lower part of ball seat is radially contracted
As a ball seat, pressure break ball 22 is located on this ball seat.
Fig. 7 show state when realization full-bore sliding without differential full-bore pressure break, slides the elastic claw 6 of 2 lower part of ball seat
Inner sliding sleeve 7 in disengaging, and free state is become from contraction state, pressure break ball 22 is released.
Embodiment 2, on the basis of the above embodiments, multistage to connect without differential full-bore fracturing sliding bush, i.e. the 1st grade of pressure break
The 2nd grade of sliding sleeve and others are extremelyNGrade fracturing sliding bush is sequentially connected in series, whereinNFor positive integer, the 1st grade of fracturing sliding bush toNGrade
The annular slot number of fracturing sliding bush increases an annular slot according to every increase level-one and is gradually incremented by.In order to improve every grade of pressure break
The 2nd grade of effect, the 1st grade of fracturing sliding bush and others are extremelyNGrade fracturing sliding bush passes sequentially through packer and is composed in series.
NGrade is slided without differential full-bore pressure break when being used in series shown in Fig. 8, by the order of connection of well head to shaft bottom are as follows: theNGrade
No differential full-bore pressure break sliding 24 ... packer 25, the 2nd grade without differential full-bore pressure break sliding 26, packer 27, the 1st grade it is stepless
Poor full-bore pressure break slides 28, packer 29, pressure difference opens sliding sleeve 30.From the 1st grade without differential full-bore fracturing sliding bush 28 toNGrade
Without differential full-bore fracturing sliding bush 24, the sum of dovetail groove 14 is pressedNThe elastic claw 6 of+3 regular increases, sliding 2 lower part of ball seat is located at
TheNIn a dovetail groove 14.It is slided for example, Fig. 1 show the 1st grade without differential full-bore pressure break, shares 4 dovetail grooves 14, slided
The elastic claw 6 of 2 lower part of ball seat is located at the 1st dovetail groove 14.
NWorking principle when grade is without the series connection of differential full-bore fracturing sliding bush are as follows: firstly, well head is suppressed, slided until pressure difference is opened
Set 30 is opened, this sliding sleeve of pressure break corresponds to stratum；Then, a pressure break ball 22 is put into from well head, under fluid power effect, pressure break ball 22
Pass sequentially throughNGrade without differential full-bore fracturing sliding bush 24 to the 2nd grade without differential full-bore fracturing sliding bush 26, and make theNGrade
No differential full-bore fracturing sliding bush 24 to the 2nd grade of elastic claw 6 without differential full-bore fracturing sliding bush 26 moves down a ladder
Shape slot 14；Pressure break ball 22 eventually arrives at the 1st grade without differential full-bore fracturing sliding bush 28, according to above-mentioned sliding without differential full-bore pressure break
Working principle, the 1st grade is opened without differential full-bore pressure break sliding 28, at this time can the pressure break sliding sleeve correspond to stratum；It is thrown again from well head
Enter the 2nd pressure break ball 22 with size, under fluid power effect, this pressure break ball 22 passes sequentially through theNGrade is without differential full-bore pressure break
Sliding sleeve 24 is sliding without differential full-bore pressure break to 3rd level, and makes theNGrade is stepless to 3rd level without differential full-bore fracturing sliding bush 24
The elastic claw 6 of poor full-bore fracturing sliding bush moves down a dovetail groove 14；Pressure break ball 22 eventually arrives at the 2nd grade without differential complete
Diameter fracturing sliding 26 simultaneously opens this grade of sliding sleeve, can the pressure break sliding sleeve correspond to stratum；And so on, investment theNThe pressure of a same size
Blastomere 22 opens theNGrade is without differential full-bore pressure break sliding 24, and this grade of sliding sleeve of pressure break corresponds to stratum.After the completion of pressing crack construction, well
Mouth pressure release,NThe lower inner sliding sleeve 11 of grade fracturing sliding bush moves upwards under the restoring force effect of spring 12, while inner sliding sleeve in promotion
9 move upwardly together, and then sliding ball seat 2 will be pushed to move up certain distance, so that the elastic claw 6 of sliding 2 lower part of ball seat
Inner sliding sleeve 7 in disengaging, and free state is become from contraction state,NA pressure break ball 22 is released, and can be fallen on shaft bottom or be returned and is discharged to
Well head, tubing string is interior to be realized compared with big orifice.
Claims (10)
1. it is a kind of without differential full-bore fracturing sliding bush, including the outer barrel that top connection and housing, lower contact once connect, Yi Jishe
Sliding ball seat, inner sliding sleeve component in outer barrel are set, it is characterized in that: the outer barrel upper inside wall is axially spaced equipped with more
A annular slot, is circumferentially with multiple pressure break holes on the overcoat wall below annular slot, and the housing lower end is equipped with interior
Shoulder, middle section constitutes annular groove after shoulder is connect with lower contact in housing；The sliding ball seat is multistage elasticity dog collar along axis
To being sequentially connected composition, the lower part of every section of elastic dog collar is respectively equipped with several elastic claws that can radially stretch, under elastic claw
End is equipped with fixture block, and the elastic claw of every section of elastic dog collar meets in contraction state constitutes axial sliding fit with outer casing inner wall,
The elastic claw of every section of elastic dog collar meets the fixture block of its lower end in stretched condition and aforementioned toroidal card slot constitutes sliding plug and matches
It closes；The inner sliding sleeve component includes upper inner sliding sleeve, middle inner sliding sleeve and lower inner sliding sleeve, and upper inner sliding sleeve is fixed on by the sealing of upper shear pin
At the pressure break hole of housing, upper inner sliding sleeve slides axially with housing composition seal cooperation simultaneously, and middle inner sliding sleeve upper end is overlapped on interior
The lower end of sliding sleeve, middle inner sliding sleeve middle part outer wall are equipped with outer shoulder, and middle inner sliding sleeve lower end passes through lower shear pin and lower inner sliding sleeve upper end
Connection, lower inner sliding sleeve are located at lower contact and housing junction and following part, and lower inner sliding sleeve outer wall is equipped with outer convex edge, lower inner sliding sleeve
Outer convex edge and spring be equipped with and constituted in annular groove after shoulder in housing is connect with lower contact, lower inner sliding sleeve respectively with
The interior shoulder of housing lower end and lower contact composition slide axially；Sliding ball seat and upper inner sliding sleeve and middle inner sliding sleeve respectively constitute resistance
Gear cooperation.
2. according to claim 1 without differential full-bore fracturing sliding bush, it is characterized in that: the housing is by upper housing and lower outer
It is formed after set connection, multiple annular slots are arranged in upper housing inner surface and along axial equidistantly distributed.
3. according to claim 1 without differential full-bore fracturing sliding bush, it is characterized in that: the housing is by upper housing and lower outer
It is formed after set connection, the engaging portion of top connection Yu upper housing is arranged in one in multiple annular slots, and in addition several settings exist
Upper housing inner surface, multiple annular slots are along axial equidistantly distributed.
4. without differential full-bore fracturing sliding bush according to claim 1 or described in 2,3, it is characterized in that: every section of elastic dog collar lower part
Elastic claw between be equipped with horn opening.
5. it is according to claim 4 without differential full-bore fracturing sliding bush, it is characterized in that: the annular slot is 2 or more,
And for structure is identical trapezoidal or arc.
6. it is a kind of without differential full-bore fracturing sliding bush, it is characterized in that: including multistage described in claim 1 without differential full-bore pressure
Sliding sleeve cascaded structure is split, i.e. the 2nd grade of the 1st grade of fracturing sliding bush and others are extremelyNGrade fracturing sliding bush is sequentially connected in series, whereinNFor
Positive integer, the 1st grade of fracturing sliding bush toNThe annular slot number of grade fracturing sliding bush increases an annular snap according to every increase level-one
Slot is gradually incremented by.
7. according to claim 6 without differential full-bore fracturing sliding bush, it is characterized in that: the housing is by upper housing and lower outer
It is formed after set connection, multiple annular slots are arranged in upper housing inner surface and along axial equidistantly distributed.
8. according to claim 6 without differential full-bore fracturing sliding bush, it is characterized in that: the housing is by upper housing and lower outer
It is formed after set connection, the engaging portion of top connection Yu upper housing is arranged in one in multiple annular slots, and in addition several settings exist
Upper housing inner surface, multiple annular slots are along axial equidistantly distributed.
9. according to claim 6 or 7, described in 8 without differential full-bore fracturing sliding bush, it is characterized in that: the 1st grade of fracturing sliding bush and its
Its 2nd grade is extremelyNGrade fracturing sliding bush passes sequentially through packer and is composed in series.
10. it is according to claim 9 without differential full-bore fracturing sliding bush, it is characterized in that: the bullet of every section of elastic dog collar lower part
Property pawl between be equipped with horn opening, the annular slot is trapezoidal or arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810139682.2A CN110145289B (en) | 2018-02-11 | 2018-02-11 | Stepless full-drift-diameter fracturing sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810139682.2A CN110145289B (en) | 2018-02-11 | 2018-02-11 | Stepless full-drift-diameter fracturing sliding sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110145289A true CN110145289A (en) | 2019-08-20 |
| CN110145289B CN110145289B (en) | 2024-08-20 |
Family
ID=67588045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810139682.2A Active CN110145289B (en) | 2018-02-11 | 2018-02-11 | Stepless full-drift-diameter fracturing sliding sleeve |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110388197A (en) * | 2019-08-21 | 2019-10-29 | 中国石油大学(北京) | Hydraulic jet infinite stage fracturing device and fracturing method |
| CN110984912A (en) * | 2019-12-23 | 2020-04-10 | 中国石油集团川庆钻探工程有限公司 | Fracturing construction process utilizing infinite grading full-bore fracturing sliding sleeve assembly system |
| 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 |
| CN111734379A (en) * | 2020-07-15 | 2020-10-02 | 中国石油集团渤海钻探工程有限公司 | Post-pressing full-bore construction tool and construction method |
| CN112049605A (en) * | 2020-09-26 | 2020-12-08 | 东北石油大学 | An underground full-bore infinite-stage ball-counting fracturing sliding sleeve |
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| CN113153218A (en) * | 2021-05-18 | 2021-07-23 | 燕山大学 | Full-bore infinite-stage fracturing sliding sleeve |
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| CN113803027A (en) * | 2021-09-09 | 2021-12-17 | 中石化石油工程技术服务有限公司 | Oil well fracturing sliding sleeve used in cooperation with soluble fracturing ball |
| CN114086936A (en) * | 2020-08-24 | 2022-02-25 | 中国石油化工股份有限公司 | A rotatable and salvageable ball-throwing fracturing sliding sleeve and using method |
| CN114482957A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Open hole full-bore infinite staged fracturing well completion device and fracturing well completion method thereof |
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