CN204060660U - A kind of static pressure pressure reduction sliding sleeve - Google Patents
A kind of static pressure pressure reduction sliding sleeve Download PDFInfo
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- CN204060660U CN204060660U CN201420478032.8U CN201420478032U CN204060660U CN 204060660 U CN204060660 U CN 204060660U CN 201420478032 U CN201420478032 U CN 201420478032U CN 204060660 U CN204060660 U CN 204060660U
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- pressure reduction
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Abstract
The utility model discloses a kind of static pressure pressure reduction sliding sleeve, comprise housing and be arranged on the inner sliding sleeve in described housing, described inner sliding sleeve slides axially in described housing; Described housing comprises upper shell and lower house; At least one flowing hole is provided with at the top of described inner sliding sleeve; The sidewall of described inner sliding sleeve is provided with constant pressure valve and sliding sleeve boss, and described constant pressure valve is arranged on the sidewall of the described inner sliding sleeve below described upper shell, and described sliding sleeve boss is arranged on below described constant pressure valve; Between described upper shell and described lower house, be provided with the first seal, between described sliding sleeve boss and described lower house, be provided with the second seal.Static pressure pressure reduction sliding sleeve disclosed in the utility model, not by the impact of cement in well cementation pressure break, the process of well cementation can not affect the work of static pressure pressure reduction sliding sleeve.
Description
Technical field
The utility model relates to the sliding bush apparatus technical field of oil-gas field fracturing completion practice staged fracturing, especially a kind of static pressure pressure reduction sliding sleeve.
Background technology
Along with the exploration and development of oil-gas reservoir is to the transfer in the directions such as compactness oil gas field, shale gas reservoir, fracturing technique is a kind of indispensable technological means.Utilize fracturing technique to transform compactness oil-gas reservoir, thus realize the high yield of oil gas field.This has been proved to be a feasible technology path.Along with constantly carrying out of exploitation, more and more higher requirement is proposed to fracturing technique and fracturing technology.
Well cementation fracturing technique starts to carry out investigation and application as a kind of novel fracturing technology.This kind of technique is different from conventional bore hole staged fracturing technology, does not need a large amount of open hole packers to carry out separations stratum, but relies on the mode that sleeve pipe cements the well outward, realizes separation, and for formation at target locations, can realize pinpoint pressure break.Especially intersect at water layer and oil reservoir the region existed, can at good packing water layer, and can accurately pressure break formation at target locations, realize the target of high yield.
Existing pressure reduction sliding sleeve, be mainly used in conventional bore hole Fracturing Technology of not cementing the well, its operating principle is that the pressure reduction area relying on sliding sleeve inner sleeve upper and lower is different, thus after in sleeve pipe, fluid pressure reaches certain numerical value, can produce, pressure differential, thus shear pin, promote inner sleeve action, thus realize opening sliding sleeve, link up the object on stratum.But this pressure reduction sliding sleeve, the existence of locking to prevent liquid can offer opening, thus realizes being communicated with outside.But, if be used in well cementation fracturing technique, will in well cementing process, cement enters in inner sliding sleeve and housing, thus causes inner sliding sleeve and cannot action, affects the carrying out of whole construction technology.
Therefore, need to invent a kind of novel static pressure pressure reduction sliding sleeve.
Utility model content
The purpose of this utility model is to provide a kind of Novel static pressure and defeats poor sliding sleeve, overcomes shortcoming above, prevents cementing concrete in the process of well cementation that sliding sleeve is dead, and cannot complete corresponding action.Described static pressure pressure reduction slides over G.I.H, and after normal well cementation, the pressure in tube post opens sliding sleeve, links up stratum.
The purpose of this utility model and solve its technical problem and realize by the following technical solutions.
By a kind of static pressure pressure reduction sliding sleeve, comprise housing and be arranged on the inner sliding sleeve in described housing, described inner sliding sleeve slides axially in described housing; Described housing comprises upper shell and lower house; At least one flowing hole is provided with at the top of described inner sliding sleeve; The sidewall of described inner sliding sleeve is provided with constant pressure valve and sliding sleeve boss, and described constant pressure valve is arranged on the sidewall of the described inner sliding sleeve below described upper shell, and described sliding sleeve boss is arranged on below described constant pressure valve; Between described upper shell and described lower house, be provided with the first seal, between described sliding sleeve boss and described lower house, be provided with the second seal.
Preferably, described upper shell and described lower house are through being threaded.
Preferably, described upper shell is fixedly connected with through static determinacy screw with described lower house.
Preferably, in described flowing hole, full-bodied grease is provided with.
Preferably, described lower house lower end is provided with positive stop lug boss, between described inner sliding sleeve and described positive stop lug boss, be provided with spacing back-up ring.
Preferably, described lower house is provided with stopper slot, for coordinating with described spacing back-up ring.
Preferably, between described inner sliding sleeve and described positive stop lug boss, the 3rd seal is also provided with.
Preferably, described 3rd seal is arranged on above described spacing back-up ring.
Preferably, described upper shell is provided with pressure break hole, is respectively equipped with the 4th seal and the 5th seal in the inner side of described upper shell, described 4th seal and the 5th seal are separately positioned on the both sides up and down in described pressure break hole.
By technique scheme, a kind of static pressure pressure reduction sliding sleeve that the utility model proposes at least has following advantages:
1) static pressure pressure reduction sliding sleeve disclosed in the utility model, by the setting of constant pressure valve, just can open under static pressure pressure reduction can be made to slide over setting pressure condition, thus static pressure pressure reduction sliding sleeve can not be opened in advance, improve the safety of static pressure pressure reduction sliding sleeve.
2) static pressure pressure reduction sliding sleeve disclosed in the utility model, not by the impact of cement in well cementation pressure break, the process of well cementation can not affect the work of static pressure pressure reduction sliding sleeve.
3) static pressure pressure reduction sliding sleeve disclosed in the utility model also can be used in conventional bore hole fracturing technology and use.
Above-mentioned explanation is only the general introduction of technical solutions of the utility model, in order to better understand technological means of the present utility model, and can be implemented according to the content of manual, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present utility model.
Accompanying drawing explanation
Fig. 1 is the structural representation of static pressure pressure reduction sliding sleeve of the present utility model;
Fig. 2 is the structural representation of static pressure pressure reduction sliding sleeve inner sliding sleeve downslide process of the present utility model.
Detailed description of the invention
For further setting forth the utility model for the technological means reaching predetermined utility model object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the detailed description of the invention of a kind of static pressure pressure reduction sliding sleeve that the utility model proposes, structure, feature and effect thereof, be described in detail as follows.In the following description, the not necessarily same embodiment that different " embodiment " or " embodiment " refers to.In addition, special characteristic, structure or feature in one or more embodiment can be combined by any suitable form.
A kind of static pressure pressure reduction sliding sleeve as depicted in figs. 1 and 2, comprise housing and be arranged on the inner sliding sleeve 2 in described housing, described inner sliding sleeve 2 slides axially in described housing; Described housing comprises upper shell 1 and lower house 4; Flowing hole is provided with at the top of described inner sliding sleeve 2; The sidewall of described inner sliding sleeve 2 is provided with constant pressure valve 5 and sliding sleeve boss 7, and described constant pressure valve 5 is arranged on the sidewall of the described inner sliding sleeve 2 below described upper shell 1, and described sliding sleeve boss 7 is arranged on below described constant pressure valve; Between described upper shell 1 and described lower house 4, be provided with the first seal 11, between described sliding sleeve boss 7 and described lower house 4, be provided with the second seal 12.
Sidewall and the sliding sleeve boss 7 of described upper shell 1, lower house 4, inner sliding sleeve 2 form the first airtight cavity, and described constant pressure valve 5 is then arranged on the wall of described airtight cavity the sidewall of inner sliding sleeve 2 (i.e. on).Described sliding sleeve boss 7, inner sliding sleeve 2 sidewall and lower house 4 form the second airtight cavity.Wherein, inner sliding sleeve 2 has inner chamber, the static pressure pressure reduction sliding sleeve of the present embodiment in the course of the work, first in the inner chamber of inner sliding sleeve 2, high-pressure fluid is pumped into from ground, described constant pressure valve 5 is opened under preset pressure condition, after described constant pressure valve 5 is opened, fluid flows in described first airtight cavity by constant pressure valve 5 by elongated hole 17, and be air in the second airtight cavity below described sliding sleeve boss 7, on identical area, the two ends up and down of sliding sleeve boss 7 produce pressure differential, thus described inner sliding sleeve 2 can be promoted move downward, thus realize opening static pressure pressure reduction sliding sleeve, to realize linking up stratum, realize the object of pressure break.
By the setting of described constant pressure valve 5, just can open under described static pressure pressure reduction can be made to slide over setting pressure condition, thus described static pressure pressure reduction sliding sleeve can not be opened in advance, improve the safety of described static pressure pressure reduction sliding sleeve.
Described static pressure pressure reduction sliding sleeve, not by the impact of cement in well cementation pressure break, normally can open use.Meanwhile, described static pressure pressure reduction sliding sleeve also can be used in conventional bore hole fracturing technology.
Preferably, the number of described flowing hole is at least one.
Preferably, described constant pressure valve 5 has a setting meeting field requirement to open force value.In the present embodiment, by suppressing in described inner sliding sleeve 2 from ground, when force value reach constant pressure valve setting open force value time, described constant pressure valve 5 is opened, and fluid flows in described first airtight cavity, thus, promote described inner sliding sleeve 2 descending.
Preferably, described upper shell 1 and described lower house 4 are through being threaded.
Selectively, described upper shell 1 is fixedly connected with through static determinacy screw 3 with described lower house 4.
Selectively, after described upper shell 1 and described lower house 4 are threaded connection, then be fixedly connected with by described static determinacy screw 3, thus make the connected mode of described upper shell 1 and described lower house 4 firmer.
Preferably, in described flowing hole, be provided with full-bodied grease, play the effect of isolation cement, thus ensure that cement can not enter in the gap between described housing and inner sliding sleeve 2.
Preferably, described lower house 4 lower end is provided with positive stop lug boss 8, between described inner sliding sleeve 2 and described positive stop lug boss 8, be provided with spacing back-up ring 6.
Preferably, described lower house 4 is provided with stopper slot, for coordinating with described spacing back-up ring 6.Spacing back-up ring 6 moves to stopper slot place and can eject, and prevents from described inner sliding sleeve 2 moves, and ensures the opening of circulation passage.
Preferably, between described inner sliding sleeve 2 and described positive stop lug boss 8, the 3rd seal 13 is also provided with.
Preferably, described 3rd seal 13 is arranged on above described spacing back-up ring 6.
Preferably, described upper shell 1 is provided with pressure break hole, is respectively equipped with the 4th seal 14 and the 5th seal 15 in the inner side of described upper shell 1, described 4th seal 14 and the 5th seal 15 are separately positioned on the both sides up and down in described pressure break hole.When reality uses, rely on the acting in conjunction of seal and high viscosity grease, cementing concrete can not enter into the gap of sliding sleeve component, and after theing cement solidifies, described static pressure pressure reduction sliding sleeve remains closed.
Concrete implementation process, first described constant pressure valve 5, described first seal 11, described second seal 12, described 3rd seal 13 are assembled, described 4th seal 14 is assembled to relevant position on described inner sliding sleeve 2 respectively to, described 5th seal 15, then, the sealing shroud being equipped with constant pressure valve 5 and seal is loaded in described upper shell 1, again described inner sliding sleeve 2 lower end is inserted in described lower house 4, and described lower house 4 is fixed with described upper shell 1 is connected.Thus, complete the overall assembling process of described static pressure pressure reduction sliding sleeve.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, the any simple modification done above embodiment according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (9)
1. a static pressure pressure reduction sliding sleeve, is characterized in that, comprise housing and be arranged on the inner sliding sleeve in described housing, described inner sliding sleeve slides axially in described housing;
Described housing comprises upper shell and lower house;
At least one flowing hole is provided with at the top of described inner sliding sleeve;
The sidewall of described inner sliding sleeve is provided with constant pressure valve and sliding sleeve boss, and described constant pressure valve is arranged on the sidewall of the described inner sliding sleeve below described upper shell, and described sliding sleeve boss is arranged on below described constant pressure valve;
Between described upper shell and described lower house, be provided with the first seal, between described sliding sleeve boss and described lower house, be provided with the second seal.
2. static pressure pressure reduction sliding sleeve according to claim 1, is characterized in that,
Described upper shell and described lower house are through being threaded.
3. static pressure pressure reduction sliding sleeve according to claim 1, is characterized in that,
Described upper shell is fixedly connected with through static determinacy screw with described lower house.
4. static pressure pressure reduction sliding sleeve according to claim 1, is characterized in that,
Full-bodied grease is provided with in described flowing hole.
5. static pressure pressure reduction sliding sleeve according to claim 1, is characterized in that,
Described lower house lower end is provided with positive stop lug boss, between described inner sliding sleeve and described positive stop lug boss, be provided with spacing back-up ring.
6. static pressure pressure reduction sliding sleeve according to claim 5, is characterized in that,
Described lower house is provided with stopper slot, for coordinating with described spacing back-up ring.
7. static pressure pressure reduction sliding sleeve according to claim 5, is characterized in that,
The 3rd seal is also provided with between described inner sliding sleeve and described positive stop lug boss.
8. static pressure pressure reduction sliding sleeve according to claim 7, is characterized in that,
Described 3rd seal is arranged on above described spacing back-up ring.
9. static pressure pressure reduction sliding sleeve according to claim 1, is characterized in that,
Described upper shell is provided with pressure break hole, is respectively equipped with the 4th seal and the 5th seal in the inner side of described upper shell, described 4th seal and the 5th seal are separately positioned on the both sides up and down in described pressure break hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478032.8U CN204060660U (en) | 2014-08-22 | 2014-08-22 | A kind of static pressure pressure reduction sliding sleeve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478032.8U CN204060660U (en) | 2014-08-22 | 2014-08-22 | A kind of static pressure pressure reduction sliding sleeve |
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| CN204060660U true CN204060660U (en) | 2014-12-31 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153751A (en) * | 2014-08-22 | 2014-11-19 | 安东石油技术（集团）有限公司 | Static pressure differential pressure sliding sleeve |
| CN105156088A (en) * | 2015-10-21 | 2015-12-16 | 中国石油化工股份有限公司 | Multiple-completion packer staged fracturing string with dual-channel injection function and using method thereof |
-
2014
- 2014-08-22 CN CN201420478032.8U patent/CN204060660U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104153751A (en) * | 2014-08-22 | 2014-11-19 | 安东石油技术（集团）有限公司 | Static pressure differential pressure sliding sleeve |
| CN105156088A (en) * | 2015-10-21 | 2015-12-16 | 中国石油化工股份有限公司 | Multiple-completion packer staged fracturing string with dual-channel injection function and using method thereof |
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Effective date of registration: 20210805 Address after: 101400 room 205, cultural service center, building 1, yard 5, qingxiuyuan street, Jingjia Road, Yanqi Town, Huairou District, Beijing Patentee after: Anton Institute of Geological Engineering Technology (Beijing) Co.,Ltd. Address before: 100102, No. 8 Tsui Xi Road, East Lake, Beijing, Chaoyang District Patentee before: Anton Bailin Oilfield Technologies (Beijing) Co.,Ltd. |