CN203626791U - Differential pressure sliding sleeve with dual protection - Google Patents
Differential pressure sliding sleeve with dual protection Download PDFInfo
- Publication number
- CN203626791U CN203626791U CN201320806473.1U CN201320806473U CN203626791U CN 203626791 U CN203626791 U CN 203626791U CN 201320806473 U CN201320806473 U CN 201320806473U CN 203626791 U CN203626791 U CN 203626791U
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- sliding sleeve
- level
- pressure break
- top connection
- break side
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Abstract
The utility model relates to the technical field of a differential pressure sliding sleeve and concretely relates to a differential pressure sliding sleeve with dual protection. The differential pressure sliding sleeve with dual protection comprises an upper joint, a first-stage opening sliding sleeve, a shearing pin, an elastic opening ring, a connecting casing pipe, a second-stage opening sliding sleeve and a lower joint, wherein at least a first-stage fracture side hole is distributed on the upper part periphery of the upper joint; the first-stage opening sliding sleeve sealing the first-stage fracture side hole is arranged in the upper joint via the shearing pin; the lower end of the upper joint is fixedly connected with the connecting casing pipe; at least one second-stage fracture side hole is distributed on the upper part periphery of the connecting casing pipe; and the second starting sliding sleeve sealing the second-stage fracture side hole is disposed in the connecting casing pipe via the shearing pin. The differential pressure sliding sleeve with dual protection is rationally designed with compactness and convenient usage; when the first-stage opening sliding sleeve cannot be opened, the second-stage opening sliding sleeve can be opened; an opposite condition can also be realized, so dual protection is provided for opening of a fracture channel; and high reliability is provided.
Description
Technical field
the utility model relates to pressure reduction sliding sleeve technical field, is a kind of dual fail-safe pressure reduction sliding sleeve.
Background technology
adopt and point adopt, control in the construction operation processes such as water blocking water, reservoir reconstruction the exceptional wells such as Multilateral Wells mixed, often need to carry out separate stratum fracfturing to horizontal well or Multilateral Wells master, branch well hole different reservoir; With regard to staged fracturing technology, the existing main pressure break mode using adds sliding sleeve fracturing technical matters for packer; An indispensable technical requirements of this technique is used pressure reduction sliding sleeve exactly, pumps into high-pressure fluid sliding sleeve is opened by ground, and high-pressure fluid enters oil reservoir rock and carries out pressure break; And easily there is the sliding sleeve defect such as do not open, poor reliability in current used pressure reduction sliding sleeve; Affect carrying out smoothly of pressure break work.
Summary of the invention
the utility model provides a kind of dual fail-safe pressure reduction sliding sleeve, has overcome the deficiency of above-mentioned prior art, and when it can effectively solve laminated distributor under well pressure break, pressure reduction sliding sleeve is not opened, poor reliability; The problem that causes follow-up pressure break work to carry out smoothly.
the technical solution of the utility model realizes by following measures: a kind of dual fail-safe pressure reduction sliding sleeve, comprises top connection, one-level open sliding sleeve, shear pin, elastic opening ring, splicing sleeve, secondary open sliding sleeve and lower contact; There is at least one one-level pressure break side opening in the top of top connection circle distribution; In top connection, be provided with the one-level open sliding sleeve of one-level pressure break side opening shutoff by shear pin; Lower end in top connection is installed with splicing sleeve, has at least one secondary pressure break side opening in the top of splicing sleeve circle distribution, in splicing sleeve, is provided with the secondary open sliding sleeve of secondary pressure break side opening shutoff by shear pin.
the further optimization and/or improvements to above-mentioned utility model technical scheme below:
the outer upper of above-mentioned one-level open sliding sleeve has one-level pressure break side opening shutoff one-level open sliding sleeve outer lug boss, has the secondary open sliding sleeve outer lug boss of secondary pressure break side opening shutoff in the outer upper of secondary open sliding sleeve; Outer ring surface middle part in one-level open sliding sleeve outer lug boss and secondary open sliding sleeve outer lug boss is provided with split ring mounting groove, in split ring mounting groove, is separately installed with elastic opening ring; Have respectively in the lower inside of top connection and splicing sleeve that Open Side Down and move spacing split ring stopper slot for sliding sleeve; Between split ring stopper slot and one-level open sliding sleeve, form annular one-level compression chamber, in the top connection corresponding with one-level compression chamber, have spout hole; The upper end sealing of splicing sleeve is arranged in the downside of one-level compression chamber; Between split ring stopper slot and secondary open sliding sleeve, form annular two-stage compression chamber, in the top connection corresponding with two-stage compression chamber, have spout hole; Lower end at splicing sleeve is provided with lower contact, and the upper end sealing of lower contact is arranged in two-stage compression chamber.
internal thread can be arranged respectively at the bottom of above-mentioned split ring stopper slot, and the upper end of splicing sleeve is fixedly mounted in one-level compression chamber by screw thread, and the holding screw of anti-rotation is installed between the lower end of top connection and splicing sleeve; The upper end of joint is fixedly mounted in two-stage compression chamber by screw thread, and the holding screw of anti-rotation is installed between splicing sleeve and lower contact.
in the top connection of above-mentioned one-level open sliding sleeve upper end, can there is one-level sliding sleeve location inner convex platform; On the splicing sleeve of secondary open sliding sleeve upper end, there is secondary sliding sleeve location inner convex platform.
in above-mentioned top connection, can be intervally distributed with two rows' one-level pressure break side opening from top to bottom, two rows' one-level pressure break side opening is cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution in top connection; On splicing sleeve, be intervally distributed with two rows' secondary pressure break side opening from top to bottom, two rows' secondary pressure break side opening is cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution on splicing sleeve.
the upside of above-mentioned top connection has the conical internal thread that can be wide at the top and narrow at the bottom, and the downside of lower contact has the conical external screw thread that is wide at the top and narrow at the bottom.
between the one-level open sliding sleeve of above-mentioned one-level pressure break side opening top and top connection, can be installed with sealing ring; Between top connection the inner and one-level open sliding sleeve, be installed with sealing ring; Between the secondary open sliding sleeve outer lug boss of secondary pressure break side opening top and top connection, be installed with sealing ring; Between splicing sleeve the inner and secondary open sliding sleeve, be installed with sealing ring.
the utility model reasonable and compact in structure, easy to use; In the situation that one-level open sliding sleeve cannot be opened, can open by secondary open sliding sleeve, otherwise so; Like this pressure break passage is opened to the effect of playing double shield, reliability is high.
Accompanying drawing explanation
the master that accompanying drawing 1 is the utility model most preferred embodiment is depending on partly cuing open structural representation.
coding in accompanying drawing is respectively: 1 is top connection, 2 is one-level open sliding sleeve, 3 is one-level open sliding sleeve outer lug boss, 4 is one-level pressure break side opening, and 5 is shear pin, and 6 is elastic opening ring, 7 is sealing ring, 8 is one-level compression chamber, and 9 is spout hole, and 10 is splicing sleeve, 11 is secondary open sliding sleeve, 12 is secondary open sliding sleeve outer lug boss, and 13 is secondary pressure break side opening, and 14 is two-stage compression chamber, 15 is lower contact, 16 is one-level sliding sleeve location inner convex platform, and 17 is secondary sliding sleeve location inner convex platform, and 18 is holding screw.
The specific embodiment
the utility model is not subject to the restriction of following embodiment, can determine concrete embodiment according to the technical solution of the utility model and actual conditions.
in the utility model, for convenience of description, the description of the relative position relation of each parts is to be all described according to the Butut mode of Figure of description 1, as: the position relationship of upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description 1.
below in conjunction with embodiment and accompanying drawing, the utility model is further described:
as shown in Figure 1, this dual fail-safe pressure reduction sliding sleeve comprises top connection 1, one-level open sliding sleeve 2, shear pin 5, elastic opening ring 6, splicing sleeve 10, secondary open sliding sleeve 11 and lower contact 15; There is at least one one-level pressure break side opening 4 in the top of top connection 1 circle distribution; In top connection 1, be provided with the one-level open sliding sleeve 2 of one-level pressure break side opening 4 shutoff by shear pin 5; Be installed with splicing sleeve 10 in the lower end of top connection 1, have at least one secondary pressure break side opening 13 in the top of splicing sleeve 10 circle distribution, in splicing sleeve 10, be provided with the secondary open sliding sleeve 11 of secondary pressure break side opening 13 shutoff by shear pin 5.In use, when one-level open sliding sleeve 2 and secondary open sliding sleeve 11 wherein any one cannot be opened time, can by hydraulic pressure by one-level open sliding sleeve 2 and secondary open sliding sleeve 11 another open, realize double shield, thereby guarantee the normal unlatching of fracturing sliding bush, reliability is high.
can according to actual needs, above-mentioned dual fail-safe pressure reduction sliding sleeve be made further optimization and/or improvements:
as shown in Figure 1, have one-level pressure break side opening 4 shutoff one-level open sliding sleeve outer lug boss 3 in the outer upper of one-level open sliding sleeve 2, have the secondary open sliding sleeve outer lug boss 12 of secondary pressure break side opening 13 shutoff in the outer upper of secondary open sliding sleeve 11; Outer ring surface middle part in one-level open sliding sleeve outer lug boss 3 and secondary open sliding sleeve outer lug boss 12 is provided with split ring mounting groove, is separately installed with elastic opening ring 6 in split ring mounting groove; Have respectively in the lower inside of top connection 1 and splicing sleeve 10 that Open Side Down and move spacing split ring stopper slot for sliding sleeve; Between split ring stopper slot and one-level open sliding sleeve 2, form annular one-level compression chamber 8, in the top connection 1 corresponding with one-level compression chamber 8, have spout hole 9; The upper end sealing of splicing sleeve 10 is arranged in the downside of one-level compression chamber 8; Between split ring stopper slot and secondary open sliding sleeve 11, form annular two-stage compression chamber 14, in the top connection 1 corresponding with two-stage compression chamber 14, have spout hole 9; In the lower end of splicing sleeve 10, lower contact 15 is installed, the upper end sealing of lower contact 15 is arranged in two-stage compression chamber 14.Radially open in split ring stopper slot by elastic opening ring 6, make one-level open sliding sleeve 2 and secondary open sliding sleeve 11 radially spacing.
as shown in Figure 1, internal thread is arranged respectively at the bottom of split ring stopper slot, and the upper end of splicing sleeve 10 is fixedly mounted in one-level compression chamber 8 by screw thread, and the holding screw 18 of anti-rotation is installed between the lower end of top connection 1 and splicing sleeve 10; The upper end of joint is fixedly mounted in two-stage compression chamber 14 by screw thread, and the holding screw 18 of anti-rotation is installed between splicing sleeve 10 and lower contact 15.Be threaded can be convenient between top connection 1 and splicing sleeve 10, dismounting between splicing sleeve 10 and lower contact 15, easy to use; Holding screw 12 can prevent rotation dropout.
as shown in Figure 1, in the top connection 1 of one-level open sliding sleeve 2 upper ends, there is one-level sliding sleeve location inner convex platform 16; On the splicing sleeve 10 of secondary open sliding sleeve 11 upper ends, there is secondary sliding sleeve location inner convex platform 17.Can be convenient to like this installation location of one-level open sliding sleeve 2 and secondary open sliding sleeve 11, easy for installation.
as shown in Figure 1, the one-level pressure break side opening 4 that is intervally distributed with two rows' one-level pressure break side opening 4, two row from top to bottom in top connection 1 is cross-distribution; Every package is drawn together six one-level pressure break side openings 4 circumference uniform distribution in top connection 1; The secondary pressure break side opening 13 that is intervally distributed with two rows' secondary pressure break side opening 13, two rows on splicing sleeve 10 is from top to bottom cross-distribution; Every package is drawn together six one-level pressure break side openings 4 circumference uniform distribution on splicing sleeve 10.
as shown in Figure 1, the upside of top connection 1 has the conical internal thread that is wide at the top and narrow at the bottom, and the downside of lower contact 15 has the conical external screw thread that is wide at the top and narrow at the bottom.Can be convenient to like this utility model is connected with other downhole hardwares.
as shown in Figure 1, between the one-level open sliding sleeve 2 of one-level pressure break side opening 4 tops and top connection 1, be installed with sealing ring 7; Between top connection 1 the inner and one-level open sliding sleeve 2, be installed with sealing ring 7; Between the secondary open sliding sleeve outer lug boss 12 of secondary pressure break side opening 13 tops and top connection 1, be installed with sealing ring 7; Between splicing sleeve 10 the inners and secondary open sliding sleeve 11, be installed with sealing ring 7.Sealing ring 7 plays the effect that increases contact surface sealing.
above technical characterictic has formed most preferred embodiment of the present utility model, and it has stronger compliance and best implementation result, can increase and decrease according to actual needs non-essential technical characterictic, meets the demand of different situations.
the use procedure of the utility model most preferred embodiment: send on tubing string after the multilayer staged fracturing tool string connection first the utility model and hydraulic packer etc. being used in conjunction with, down to design level position; Pitching turn on pump circulation, ball is circulated to the pressure of spraining after destination locations, hydraulic pressure acts on one-level open sliding sleeve 2 and secondary open sliding sleeve 11, when one-level open sliding sleeve 2 or secondary open sliding sleeve 11 are cut off shear screw 5 under pressure, drive one-level open sliding sleeve 2 or secondary open sliding sleeve 11 to move down in the time that one-level open sliding sleeve 2 or secondary open sliding sleeve 11 drive elastic opening ring 6 to come downwards to split ring stopper slot, elastic opening ring 6 radially opens and is stuck in the upper surface of split ring stopper slot, makes one-level open sliding sleeve 2 or secondary open sliding sleeve 11 spacing; Now one-level pressure break side opening 4 or secondary pressure break side opening 13 are opened, and can carry out the fracturing work in later stage.
Claims (10)
1. a dual fail-safe pressure reduction sliding sleeve, is characterized in that comprising top connection, one-level open sliding sleeve, shear pin, elastic opening ring, splicing sleeve, secondary open sliding sleeve and lower contact; There is at least one one-level pressure break side opening in the top of top connection circle distribution; In top connection, be provided with the one-level open sliding sleeve of one-level pressure break side opening shutoff by shear pin; Lower end in top connection is installed with splicing sleeve, has at least one secondary pressure break side opening in the top of splicing sleeve circle distribution, in splicing sleeve, is provided with the secondary open sliding sleeve of secondary pressure break side opening shutoff by shear pin.
2. dual fail-safe pressure reduction sliding sleeve according to claim 1, the outer upper that it is characterized in that one-level open sliding sleeve has one-level pressure break side opening shutoff one-level open sliding sleeve outer lug boss, has the secondary open sliding sleeve outer lug boss of secondary pressure break side opening shutoff in the outer upper of secondary open sliding sleeve; Outer ring surface middle part in one-level open sliding sleeve outer lug boss and secondary open sliding sleeve outer lug boss is provided with split ring mounting groove, in split ring mounting groove, is separately installed with elastic opening ring; Have respectively in the lower inside of top connection and splicing sleeve that Open Side Down and move spacing split ring stopper slot for sliding sleeve; Between split ring stopper slot and one-level open sliding sleeve, form annular one-level compression chamber, in the top connection corresponding with one-level compression chamber, have spout hole; The upper end sealing of splicing sleeve is arranged in the downside of one-level compression chamber; Between split ring stopper slot and secondary open sliding sleeve, form annular two-stage compression chamber, in the top connection corresponding with two-stage compression chamber, have spout hole; Lower end at splicing sleeve is provided with lower contact, and the upper end sealing of lower contact is arranged in two-stage compression chamber.
3. dual fail-safe pressure reduction sliding sleeve according to claim 2, internal thread is arranged respectively at the bottom that it is characterized in that split ring stopper slot, the upper end of splicing sleeve is fixedly mounted in one-level compression chamber by screw thread, and the holding screw of anti-rotation is installed between the lower end of top connection and splicing sleeve; The upper end of joint is fixedly mounted in two-stage compression chamber by screw thread, and the holding screw of anti-rotation is installed between splicing sleeve and lower contact.
4. according to the dual fail-safe pressure reduction sliding sleeve described in claim 1 or 2 or 3, it is characterized in that there is one-level sliding sleeve location inner convex platform in the top connection of one-level open sliding sleeve upper end; On the splicing sleeve of secondary open sliding sleeve upper end, there is secondary sliding sleeve location inner convex platform.
5. according to the dual fail-safe pressure reduction sliding sleeve described in claim 1 or 2 or 3, it is characterized in that being intervally distributed with in top connection two rows' one-level pressure break side opening from top to bottom, two rows' one-level pressure break side opening is cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution in top connection; On splicing sleeve, be intervally distributed with two rows' secondary pressure break side opening from top to bottom, two rows' secondary pressure break side opening is cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution on splicing sleeve.
6. dual fail-safe pressure reduction sliding sleeve according to claim 4, is characterized in that being intervally distributed with in top connection two rows' one-level pressure break side opening from top to bottom, and two rows' one-level pressure break side openings are cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution in top connection; On splicing sleeve, be intervally distributed with two rows' secondary pressure break side opening from top to bottom, two rows' secondary pressure break side opening is cross-distribution; Every package is drawn together six one-level pressure break side openings circumference uniform distribution on splicing sleeve.
7. according to the dual fail-safe pressure reduction sliding sleeve described in claim 1 or 2 or 3, it is characterized in that the upside of top connection has the conical internal thread that is wide at the top and narrow at the bottom, the downside of lower contact has the conical external screw thread that is wide at the top and narrow at the bottom.
8. dual fail-safe pressure reduction sliding sleeve according to claim 4, is characterized in that the upside of top connection has the conical internal thread that is wide at the top and narrow at the bottom, and the downside of lower contact has the conical external screw thread that is wide at the top and narrow at the bottom.
9. dual fail-safe pressure reduction sliding sleeve according to claim 6, is characterized in that the upside of top connection has the conical internal thread that is wide at the top and narrow at the bottom, and the downside of lower contact has the conical external screw thread that is wide at the top and narrow at the bottom.
10. dual fail-safe pressure reduction sliding sleeve according to claim 9, is characterized in that being installed with sealing ring between the one-level open sliding sleeve of one-level pressure break side opening top and top connection; Between top connection the inner and one-level open sliding sleeve, be installed with sealing ring; Between the secondary open sliding sleeve outer lug boss of secondary pressure break side opening top and top connection, be installed with sealing ring; Between splicing sleeve the inner and secondary open sliding sleeve, be installed with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806473.1U CN203626791U (en) | 2013-12-10 | 2013-12-10 | Differential pressure sliding sleeve with dual protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320806473.1U CN203626791U (en) | 2013-12-10 | 2013-12-10 | Differential pressure sliding sleeve with dual protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203626791U true CN203626791U (en) | 2014-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320806473.1U Expired - Fee Related CN203626791U (en) | 2013-12-10 | 2013-12-10 | Differential pressure sliding sleeve with dual protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203626791U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN109138917A (en) * | 2017-06-28 | 2019-01-04 | 中国石油化工股份有限公司 | It is a kind of to set sliding sleeve and the fracturing string comprising it |
-
2013
- 2013-12-10 CN CN201320806473.1U patent/CN203626791U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895529A (en) * | 2015-06-09 | 2015-09-09 | 中国石油集团渤海钻探工程有限公司 | Underseal opening type full-bore cementing sliding sleeve |
| CN109138917A (en) * | 2017-06-28 | 2019-01-04 | 中国石油化工股份有限公司 | It is a kind of to set sliding sleeve and the fracturing string comprising it |
| CN109138917B (en) * | 2017-06-28 | 2020-09-22 | 中国石油化工股份有限公司 | Setting sliding sleeve and fracturing string comprising same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20201210 |