CN207437005U - Band centering edge formula delayed start-up well cementation sliding sleeve - Google Patents
Band centering edge formula delayed start-up well cementation sliding sleeve Download PDFInfo
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- CN207437005U CN207437005U CN201721379052.XU CN201721379052U CN207437005U CN 207437005 U CN207437005 U CN 207437005U CN 201721379052 U CN201721379052 U CN 201721379052U CN 207437005 U CN207437005 U CN 207437005U
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- sliding sleeve
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- centering edge
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Abstract
The utility model is related to a kind of band centering edge formula delayed start-up well cementation sliding sleeve, including top connection, outer housing, lower contact, inner sliding sleeve, centering edge, shear pin, rupture disk, valve body, spring and sealing ring；Outer housing upper/lower terminal is connected through a screw thread respectively with top connection and lower contact, and the centering edge being uniformly distributed along the circumference is designed on outer housing, and trough type pressure break hole is provided on centering edge；Inner sliding sleeve is mounted on inside outer housing, and inner sliding sleeve can slide axially, and inner sliding sleeve is connected with outer housing by shear pin；Cavity between outer housing and inner sliding sleeve is separated into upper cavity and lower chamber, is full of hydraulic oil in upper cavity, lower chamber is air chamber.The utility model can be with casing tripping in, there is righting casing, tripping in is simpler and more direct, saves the working procedure that a tripping in perforating gun carries out perforation, is suitable for carrying out in the big displacement Wells of staged fracturing or long horizontal sections horizontal well after needing lower completion casing.
Description
Technical field
The utility model is related to oil-gas field downhole operation technical field of tools, more specifically to a kind of band centering edge
Formula delayed start-up well cementation sliding sleeve.
Background technology
At present, in fractured horizontal well rebuilding construction generally using a kind of staged fracturing is carried out using bridge plug cooperation perforating gun
Technical method is needed to rely on coiled tubing tripping in perforating gun progress first section perforation using the technical method, gets through pit shaft and stratum
Between pumping passage, however this mode for carrying out first section perforation is, it is necessary to be equipped with coiled tubing work vehicle, operating type cost
Greatly, flow is complicated, adds operating cost and risk.Also, in big displacement Wells or long horizontal sections horizontal well, due to well
Body track is complicated, horizontal segment is very long, and coiled tubing tripping in frictional resistance is very big, and coiled tubing is difficult to reach distal end specific bit in pit shaft
Put carry out perforating job.
The content of the invention
The technical problems to be solved in the utility model is, provides one kind and is not required to running string, can directly open first section
The band centering edge formula delayed start-up well cementation sliding sleeve of pumping passage.
Technical solution is used by the utility model solves its technical problem：Construct a kind of band centering edge formula delayed start-up
Well cementation sliding sleeve, including top connection, outer housing, lower contact, inner sliding sleeve, centering edge, shear pin, rupture disk, valve body, spring and close
Seal；
The outer housing upper/lower terminal is connected through a screw thread respectively with the top connection and the lower contact, the shell
The centering edge being uniformly distributed along the circumference is designed on body, trough type pressure break hole is provided on the centering edge；
The inner sliding sleeve is mounted on inside the outer housing, and the inner sliding sleeve can slide axially along described, the inner sliding sleeve
It is connected with outer housing by shear pin；
Cavity between the outer housing and the inner sliding sleeve is separated into upper cavity and lower chamber, is filled in the upper cavity
Full hydraulic oil, the lower chamber are air chamber；
First through hole, the first deep hole, the second deep hole and the second through hole, the first through hole and institute are drilled on the centering edge
Upper cavity connection is stated, the first silk plug and rupture disk are installed in the first through hole, the first deep hole connection described first is logical
Hole and second deep hole, are equipped with valve body, spring and the 3rd silk plug in second deep hole, second through hole and it is described under
Cavity, second deep hole connect, and the second silk plug is equipped in second through hole.
In said program, inner sliding sleeve upper surface sectional area is more than lower face sectional area.
In said program, shear pin is installed on the centering edge, annular groove, the shearing are provided on the inner sliding sleeve
Pin secures the above annular groove.
In said program, the junction of the outer housing and top connection is equipped with the first sealing ring, and the outer housing is under
The junction of connector is equipped with the 6th sealing ring.
In said program, pressure break hole upper/lower terminal is separately installed with the second sealing ring and the 3rd sealing ring.
In said program, be provided with the 4th sealing ring and the 5th sealing ring on the outer housing, the outer housing, it is described in
The seal cavity that sliding sleeve, the 3rd sealing ring, the 4th sealing ring surround is the upper cavity, the outer housing, described
The seal cavity that inner sliding sleeve, the 4th sealing ring, the 5th sealing ring surround is the lower chamber.
Implement the band centering edge formula delayed start-up well cementation sliding sleeve of the utility model, have the advantages that：
1st, the utility model fixes inner sliding sleeve using shear pin, and band centering edge formula delayed start-up well cementation sliding sleeve can be made to exist
It opens, can be needed to change well cementation sliding sleeve unlatching according to site operation by adjusting the shear force of shear pin under setting pressure
Pressure.
2nd, the utility model closes hydraulic oil circulation passage using rupture disk, and before rupture disk breakdown, inner sliding sleeve squeezes motionless
Hydraulic oil, while can not also slide, rupture disk prevents the security means that inner sliding sleeve slides in advance when failing as shear pin, carry
The high security with centering edge formula delayed start-up well cementation sliding sleeve.
3rd, the slowly principle of speed when the utility model flows through minimum passage gaps using hydraulic oil, reaches and prolongs
When open sliding sleeve purpose, ensure casing carry out pressure test sequence in will not shift to an earlier date open sliding sleeve, do not interfere with casing pressure test
As a result.
4th, the utility model is by delay function arrangement of mechanism in the centering edge, and not design arrangement is in the shell
On body, be greatly reduced sliding sleeve body wall thickness dimension, delay function mechanism element is all installed on the outside of sliding sleeve, convenient for debugging and
It replaces, sliding sleeve compact overall structure, installation is very convenient.
5th, the utility model tool body outer diameter and casing coupling outer diameter are not much different, centering edge and rigid centralizer for casing
Centering edge effect it is identical, righting sliding sleeve placed in the middle can be played the role of, not additionally increase casing tripping in construction risk it is same
When, the cement layer thickness of centering edge and ground interlayer is reduced, pressing crack construction is carried out convenient for passing through pressure break hole.
6th, the utility model can be widely applied to need tripping in completion casing carry out staged fracturing big displacement Wells or
Long horizontal sections horizontal well can not only simplify work flow, reduce the number that makes a trip, and reduce construction risk, moreover it is possible to greatly improve
Operating efficiency saves operating cost, there is good economic benefit and social benefit.
7th, the utility model can not only open sliding sleeve by pressure difference mode, be not required to the other opening instruments of tripping in, moreover it is possible to
Pressure influence during full wellbore casing pressure testing operation is enough born, not because pressure test pressure opens sliding sleeve in advance.
Description of the drawings
Below in conjunction with accompanying drawings and embodiments, the utility model is described in further detail, in attached drawing：
Fig. 1 is the overall structure diagram with centering edge formula delayed start-up well cementation sliding sleeve of the utility model；
Fig. 2 is pressure break bore portion structure diagram in the band centering edge formula delayed start-up well cementation sliding sleeve of the utility model；
Fig. 3 is delay function part-structure schematic diagram in the band centering edge formula delayed start-up well cementation sliding sleeve of the utility model；
In figure：1st, top connection, 2, outer housing, 3, lower contact, 4, inner sliding sleeve, 5, centering edge, 6, shear pin, 7, pressure break
Hole, the 8, first silk plug, 9, rupture disk, 10, valve body, 11, spring, the 12, second silk plug, the 13, the 3rd silk plug, the 14, first sealing ring,
15th, the second sealing ring, the 16, the 3rd sealing ring, the 17, the 4th sealing ring, the 18, the 5th sealing ring, the 19, the 6th sealing ring, 20, annular
Slot, 21, upper cavity, 22, lower chamber, 23, first through hole, the 24, first deep hole, the 25, second deep hole, the 26, second through hole.
Specific embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, it is detailed now to compare attached drawing
Illustrate specific embodiment of the present utility model.
As shown in Figs. 1-3, the disclosed band centering edge formula delayed start-up well cementation sliding sleeve of the utility model, including top connection 1, outside
Housing 2, lower contact 3, inner sliding sleeve 4, centering edge 5, shear pin 6, pressure break hole 7, the first silk plug 8, rupture disk 9, valve body 10, spring
11, the second silk plug 12, the 3rd silk plug 13, the first sealing ring 14, the second sealing ring 15, the 3rd sealing ring 16, the 4th sealing ring 17,
5th sealing ring 18, the 6th sealing ring 19, annular groove 20, upper cavity 21, lower chamber 22, first through hole 23, the first deep hole 24,
Two deep holes 25, the second through hole 26.
2 upper/lower terminal of outer housing is connected through a screw thread respectively with top connection 1 and lower contact 3, and it is close that junction is equipped with first
14 and the 6th sealing ring 19 of seal is designed with the centering edge 5 being uniformly distributed along the circumference on outer housing 2, shear pin is equipped on centering edge 5
6 are followed closely, is provided with trough type pressure break hole 7 on centering edge 5, it is close that 7 upper/lower terminal of pressure break hole is separately installed with the second sealing ring 15 and the 3rd
Seal 16.Pressure break hole 7 is arranged on centering edge 5, and centering edge 5 is identical with the centering edge effect of rigid centralizer for casing, Neng Gouqi
To the effect of righting sliding sleeve placed in the middle, the cement layer thickness of reduction centering edge 5 and ground interlayer.
Inner sliding sleeve 4 is mounted on inside outer housing 2, and 4 upper surface sectional area of inner sliding sleeve is more than lower face sectional area, inner sliding sleeve 4
Annular groove 20 can be provided on inner sliding sleeve 4, shear pin 6 fixes annular groove 20, in shear pin along sliding sleeve central axial slip
Before 6 do not cut, inner sliding sleeve 4 cannot slide axially, and pressure break hole 7 is closed.After shear pin 6 is cut, inner sliding sleeve 4 can edge
It slides axially, after sliding into bottom, exposes pressure break hole 7, it is that sliding sleeve is opened that can cut the minimum pressure values needed for shear pin 6
Pressure can adjust sliding sleeve Opening pressure by the quantity for changing shear pin 6.
The 4th sealing ring 17 and the 5th sealing ring 18, outer housing 2 and inner sliding sleeve 4, the 3rd sealing ring are provided on outer housing 2
16th, the 4th sealing ring 17, the 5th sealing ring 18 form two seal cavities, respectively upper cavity 21 and lower chamber 22, upper cavity
Full of hydraulic oil in 21, lower chamber 22 is air chamber, and first through hole 23, the first deep hole 24, the second deep hole 25 are drilled on centering edge 5
With the second through hole 26, first through hole 23 is connected with upper cavity 21, and the first silk plug 8 and rupture disk 9 are equipped in first through hole 23, the
One deep hole 24 connects 23 and second deep hole 25 of first through hole, and valve body 10,11 and the 3rd silk plug of spring are equipped in the second deep hole 25
13, the second through hole 26 is connected with lower chamber 22, the second deep hole 25, and the second silk plug 12 is equipped in the second through hole 26.Inner sliding sleeve 4 exists
During sliding axially, hydraulic oil in the upper cavity 21 is squeezed, hydraulic oil is made to pass sequentially through arranged on the centering edge 5
One through hole 23, the first deep hole 24, the second deep hole 25 and the second through hole 26 are flowed into lower chamber 22.
The operation principle of the utility model is：
Using band centering edge formula delayed start-up well cementation sliding sleeve, by well cementation sliding sleeve with casing G.I.H, well cementing of cement is completed
Construction after theing cement solidifies, carries out pressure testing, bottom pressure can be acted on inner sliding sleeve 4, due to 4 upper surface of inner sliding sleeve to casing
Sectional area is more than lower face sectional area, therefore inner sliding sleeve 4 can be subject to the thrust along sliding sleeve under central axial, but due to shear pin
6 fix inner sliding sleeve 4, therefore inner sliding sleeve 4 cannot slide axially, and when in pressure test sequence, bottom pressure is gradually increasing, push away
When power increases to greater than 6 shear force of shear pin, shear pin 6 is cut, inner sliding sleeve 4 start under the influence of thrust vertically to
Lower slider, in sliding process, inner sliding sleeve 4 squeezes hydraulic oil in upper cavity 21, and hydraulic oil is made to generate oil pressure, when oil pressure is more than rupture
During 9 explosion value of disk, rupture disk 9 is breakdown, and hydraulic oil flows through the first deep hole 24, flows to the second deep hole 25 by first through hole 23,
Hydraulic oil promotes the valve body 10 in the second deep hole 25, and valve body 10 squeezes spring 11, after spring 11 compresses, 10 and second deep hole of valve body
Minimum passage gaps are established between 25, hydraulic oil flows through the second through hole 26, flow into lower chamber by minimum passage gaps
22, hydraulic oil slow transits through minimum passage gaps, and inner sliding sleeve 4 is caused to slide one section of longer time, and inner sliding sleeve 4 slides into bottom
Afterwards, pressure break hole 7 is exposed, the time used in 4 entire motion process of inner sliding sleeve is much larger than the time carried out used in casing pressure test, Neng Goubao
Card casing pressure test midway sliding sleeve does not lose envelope, and directly pressing crack construction can be carried out by the pressure break hole 7 of exposing after the completion of pressure testing.
The embodiment of the utility model is described above in conjunction with attached drawing, but the utility model is not limited to
The specific embodiment stated, above-mentioned specific embodiment is only schematical rather than restricted, this field it is common
Technical staff is not departing from the utility model aims and scope of the claimed protection situation under the enlightenment of the utility model
Under, many forms can be also made, these are belonged within the protection of the utility model.
Claims (6)
1. a kind of band centering edge formula delayed start-up well cementation sliding sleeve, which is characterized in that including top connection, outer housing, lower contact, interior cunning
Set, centering edge, shear pin, rupture disk, valve body, spring and sealing ring；
The outer housing upper/lower terminal is connected through a screw thread respectively with the top connection and the lower contact, on the outer housing
The centering edge being uniformly distributed along the circumference is designed with, trough type pressure break hole is provided on the centering edge；
The inner sliding sleeve is mounted on inside the outer housing, and the inner sliding sleeve can slide axially, the inner sliding sleeve and outer housing
It is connected by shear pin；
Cavity between the outer housing and the inner sliding sleeve is separated into upper cavity and lower chamber, is full of liquid in the upper cavity
Pressure oil, the lower chamber are air chamber；
Be drilled with first through hole, the first deep hole, the second deep hole and the second through hole on the centering edge, the first through hole with it is described on
Cavity connects, and is equipped with the first silk plug and rupture disk in the first through hole, first deep hole connect the first through hole with
Second deep hole is equipped with valve body, spring and the 3rd silk plug, second through hole and the cavity of resorption in second deep hole
Body, second deep hole connect, and the second silk plug is equipped in second through hole.
2. band centering edge formula delayed start-up well cementation sliding sleeve according to claim 1, which is characterized in that the inner sliding sleeve upper end
Face sectional area is more than lower face sectional area.
3. band centering edge formula delayed start-up well cementation sliding sleeve according to claim 1, which is characterized in that pacify on the centering edge
Equipped with shear pin, annular groove is provided on the inner sliding sleeve, the shear pin secures the above annular groove.
4. band centering edge formula delayed start-up well cementation sliding sleeve according to claim 1, which is characterized in that the outer housing with it is upper
The junction of connector is equipped with the first sealing ring, and the junction of the outer housing and lower contact is equipped with the 6th sealing ring.
5. band centering edge formula delayed start-up well cementation sliding sleeve according to claim 1, which is characterized in that on the pressure break hole,
Lower both ends are separately installed with the second sealing ring and the 3rd sealing ring.
6. band centering edge formula delayed start-up well cementation sliding sleeve according to claim 5, which is characterized in that set on the outer housing
It is equipped with the 4th sealing ring and the 5th sealing ring, the outer housing, the inner sliding sleeve, the 3rd sealing ring, the 4th sealing
Corral into seal cavity for the upper cavity, it is the outer housing, the inner sliding sleeve, the 4th sealing ring, the described 5th close
The seal cavity that seal surrounds is the lower chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721379052.XU CN207437005U (en) | 2017-10-24 | 2017-10-24 | Band centering edge formula delayed start-up well cementation sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721379052.XU CN207437005U (en) | 2017-10-24 | 2017-10-24 | Band centering edge formula delayed start-up well cementation sliding sleeve |
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|---|---|
| CN207437005U true CN207437005U (en) | 2018-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721379052.XU Active CN207437005U (en) | 2017-10-24 | 2017-10-24 | Band centering edge formula delayed start-up well cementation sliding sleeve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of time lagged type pressure break channel construction method |
| CN109339757A (en) * | 2018-08-21 | 2019-02-15 | 中国石油天然气股份有限公司 | A kind of delay sliding sleeve |
| CN110439522A (en) * | 2019-08-16 | 2019-11-12 | 中石化石油工程技术服务有限公司 | The controllable corrosion opening device in first section pressure break channel and pressure break segmentation operation construction technology |
| CN110566159A (en) * | 2019-09-23 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司 | oil-gas well fracturing transformation process adopting time-delay opening toe end sliding sleeve |
| CN111622710A (en) * | 2020-06-09 | 2020-09-04 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
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2017
- 2017-10-24 CN CN201721379052.XU patent/CN207437005U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025943A (en) * | 2018-08-21 | 2018-12-18 | 中国石油天然气股份有限公司 | A kind of time lagged type pressure break channel construction method |
| CN109339757A (en) * | 2018-08-21 | 2019-02-15 | 中国石油天然气股份有限公司 | A kind of delay sliding sleeve |
| CN110439522A (en) * | 2019-08-16 | 2019-11-12 | 中石化石油工程技术服务有限公司 | The controllable corrosion opening device in first section pressure break channel and pressure break segmentation operation construction technology |
| CN110439522B (en) * | 2019-08-16 | 2022-03-18 | 中国石油化工集团有限公司 | Controllable corrosion opening device for first-section fracturing channel and fracturing sectional operation construction process |
| CN110566159A (en) * | 2019-09-23 | 2019-12-13 | 中国石油集团川庆钻探工程有限公司 | oil-gas well fracturing transformation process adopting time-delay opening toe end sliding sleeve |
| CN110566159B (en) * | 2019-09-23 | 2021-05-04 | 中国石油集团川庆钻探工程有限公司 | Oil-gas well fracturing transformation process adopting time-delay opening toe end sliding sleeve |
| CN111622710A (en) * | 2020-06-09 | 2020-09-04 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
| CN111622710B (en) * | 2020-06-09 | 2023-10-13 | 中国石油天然气集团有限公司 | High-pressure activation pressure guide mechanism of sliding sleeve tool and use method |
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