CN104234662B - A kind of reducing sliding sleeve switch - Google Patents
A kind of reducing sliding sleeve switch Download PDFInfo
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- CN104234662B CN104234662B CN201410463229.9A CN201410463229A CN104234662B CN 104234662 B CN104234662 B CN 104234662B CN 201410463229 A CN201410463229 A CN 201410463229A CN 104234662 B CN104234662 B CN 104234662B
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- sealing ring
- sliding sleeve
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Abstract
The invention provides a kind of reducing sliding sleeve switch, including top connection, lower contact, the sliding sleeve slided in top connection and lower contact, top connection is sealedly and fixedly connected with lower contact, top connection offers the first liquid outlet and the second liquid outlet the most successively, and sliding sleeve is connected by sliding sleeve shear pin with top connection, and sliding sleeve shear pin is positioned at the upper end of the first liquid outlet；The middle part of top connection is arranged with upper sealing ring, lower sealing ring the most successively, lining, elastic component, upper sealing ring is fixing with top connection to be connected, upper sealing ring is in sealing contact with lower sealing ring, and the place of being in sealing contact is positioned at the exit of the second liquid outlet, lower sealing ring is fixing with lining to be connected, and lining is fixing with elastic component to be connected, and elastic component is fixing with lower contact to be connected；Simple in construction, easy to use, the size of the bore of liquid outlet can be changed during using according to the difference of pressure, meet the reducing sliding sleeve switch of a large amount of sand fracturing construction demand.
Description
Technical field
The present invention relates to oil gas field stimulation technology field, be one of underground operation tool conventional in oil gas field reservoir reconstruction operation, be particularly well-suited to fixed tubular column multilevel hierarchy pressing crack construction, particularly relate to a kind of reducing sliding sleeve switch.
Background technology
Electricity sliding sleeve switch is the requisite downhole tool of low-permeability oil deposit reservoir reconstruction, in recent years for improving well yield further and shortening duty cycle, reservoir carries out significantly more efficient transformation, has carried out the research of fixed tubular column multilevel hierarchy fracturing tool.K344 packer and sliding sleeve switch is mostly used to realize packing and the construction of interlayer in multilevel hierarchy pressing crack construction.The many utilizations of current sliding sleeve switch be Authorization Notice No. such as be CN 2898283Y, Application No. 200620112834.2, disclosed a kind of buffering sliding-casing switch, technology contents is for including top connection, lower contact, through hole, sealing ring, steel ball, spring, sliding sleeve, top connection is connected with lower contact by sealing ring, top connection has through hole, has sliding sleeve in it, the sliding sleeve seat of honour has steel ball, bottom to have spring supporting；Disclosed in can be seen that, the size of the liquid outlet (through hole) of a kind of buffering sliding-casing switch is fixing, and the pressing crack construction of single discharge capacity can only be met, when in sliding sleeve, pressure increases, timely pressure can not be discharged, cause hypertonia and packer setting operating difficulties in instrument at work, it is impossible to meet a large amount of sand fracturing construction demand.
Summary of the invention
For the problems referred to above, the invention provides one, simple in construction, easy to use, the size of the bore of liquid outlet can be changed during using according to the difference of pressure, make the pressure held stationary in sliding sleeve, meet the reducing sliding sleeve switch of a large amount of sand fracturing construction demand.
For achieving the above object, the present invention is by the following technical solutions, a kind of reducing sliding sleeve switch, including top connection, lower contact, the sliding sleeve slided in top connection and lower contact, described top connection is sealedly and fixedly connected with lower contact, described top connection offers the first liquid outlet and the second liquid outlet the most successively, and described sliding sleeve is connected by sliding sleeve shear pin with top connection, and sliding sleeve shear pin is positioned at the upper end of the first liquid outlet；
The middle part of described top connection is arranged with upper sealing ring, lower sealing ring the most successively, lining, elastic component, described upper sealing ring is fixing with top connection to be connected, described upper sealing ring is in sealing contact with lower sealing ring, and the place of being in sealing contact is positioned at the exit of the second liquid outlet, described lower sealing ring is fixing with lining to be connected, and described lining is fixing with elastic component to be connected, and described elastic component is fixing with lower contact to be connected.
Further, described upper sealing ring forms inclined-plane from the surface of the end of inner circle to cylindrical, described lower sealing ring forms an interior inclined-plane coordinated with outer inclined-plane from the surface of the end face of cylindrical to inner circle, and the interior inclined-plane of described lower sealing ring is pressed on the outer inclined-plane of upper sealing ring and is in sealing contact.
Further, the end face of described upper sealing ring and the upper surface of the second liquid outlet are concordant.
Further, described elastic component is spring or compressible rubber.
Further, described top connection, upper sealing ring, lower sealing ring, lining, elastic component, the maximum outside diameter of lower contact.
Further, described top connection is threaded connection with lower contact.
Further, described top connection is directly connected by retaining shear pin with lower contact.
Further, between described top connection and sliding sleeve, between described top connection and upper sealing ring, between described top connection and lining, between described top connection and lower contact, between described lining and lower sealing ring, it is designed with sealing ring.
The present invention uses above-mentioned technical scheme, have the advantage that 1, two liquid outlets that sliding sleeve is provided with, one is immutable bore liquid outlet, one increases according to the pressure in sliding sleeve, the bore of liquid outlet can become big, make the pressure in sliding sleeve be in a stable pressure, it is ensured that the reliability of sliding sleeve, meet huge discharge sand fracturing construction demand simultaneously；2, simple in construction, two liquid outlets that top connection is provided with, one liquid outlet is sealed by upper sealing ring and lower sealing ring, lower sealing ring is connected with lower contact by lining and elastic component simultaneously, upper sealing ring is connected with top connection, when the pressure in sliding sleeve is continuously increased, when assembling precompression more than elastic component 7, liquid can push lower sealing ring open by this liquid outlet, upper sealing ring can change according to the pressure in sliding sleeve with the place of being in sealing contact of lower sealing ring simultaneously, the i.e. lower sealing ring compression elastic piece when pressure increases, opening becomes big, when pressure reduces, elastic force under shed at elastic component diminishes, so that the pressure in sliding sleeve is more stable.
Below with reference to accompanying drawing, the present invention is described in further details.
Accompanying drawing explanation
Fig. 1 is a kind of reducing sliding sleeve switch structural representation.
1, top connection；2, sliding sleeve shear pin；3, sliding sleeve；4, upper sealing ring；5, lower sealing ring；6, lining；7, elastic component；8, retaining shear pin；9, lower contact；10, sealing ring；101, the first liquid outlet；102, the second liquid outlet.
Detailed description of the invention
Further a kind of reducing sliding sleeve switch is described in detail with embodiment below in conjunction with the accompanying drawings.
A kind of reducing sliding sleeve switch such as Fig. 1, including top connection 1, lower contact 9, the sliding sleeve 3 slided in top connection 1 and lower contact 9, described top connection 1 is sealedly and fixedly connected with lower contact 9, described top connection 1 offers the first liquid outlet 101 and the second liquid outlet 102 the most successively, and described sliding sleeve 3 is connected by sliding sleeve shear pin 2 with top connection 1, and sliding sleeve shear pin 2 is positioned at the upper end of the first liquid outlet 101；
The middle part of described top connection 1 is arranged with upper sealing ring 4, lower sealing ring 5 the most successively, lining 6, elastic component 7, described upper sealing ring 4 is fixing with top connection 1 to be connected, described upper sealing ring 4 is in sealing contact with lower sealing ring 5, and the place of being in sealing contact is positioned at the exit of the second liquid outlet 102, described lower sealing ring 5 is fixing with lining 6 to be connected, and described lining 6 is fixing with elastic component 7 to be connected, and described elastic component 7 is fixing with lower contact 9 to be connected.
In above-mentioned, the internal and external threads that top connection 1 passes through self to be provided with lower contact 9 is fixed and is connected, in order to make under using for a long time, top connection 1 will not loosen with lower contact 9, it is in a state sealed, is therefore fixedly connected also by retaining shear pin 8 between top connection 1 and lower contact 9；
In above-mentioned, upper sealing ring 4 and top connection 1, lower sealing ring 5 and lining 6, lining 6 and elastic component 7, elastic component 7 and lower contact 9 are fixedly connected by screw or the mode such as weld, upon connection in order to ensure its sealing, the accidents such as leakage of oil can not occur, between described top connection 1 and upper sealing ring 4, between described top connection 1 and lining 6, between described top connection 1 and lower contact 9, between described lining 6 and lower sealing ring 5, be designed with sealing ring 10；
nullOperationally，This sliding sleeve switch is lowered into precalculated position together with tubing string，Now sliding sleeve switch is closed under sliding sleeve blocks，When needs sliding sleeve switch works，Steel ball is put into from well head，When steel ball drop to sliding sleeve 3，And pressurize，When pressure reaches the maximum pressure that sliding sleeve shear pin 1 is born，Sliding sleeve shear pin 2 ruptures，Sliding sleeve 3 separates with top connection 1，Steel ball and sliding sleeve 2 move down，When the top of sliding sleeve 3 moves down into the position of the first liquid outlet 101，First liquid outlet 101 is opened，Liquid flows out from the first liquid outlet 101，When the liquid in sliding sleeve switch is continuously increased，Oil jacket pressure reduction is continuously increased，When the upper end of sliding sleeve 3 moves down into the second liquid outlet 102，Lower sealing ring 5 can be pressed by liquid by the second liquid outlet 102，When oil jacket pressure reduction is more than 1.5Mpa，Liquid can back down lower sealing ring 5，Lower sealing ring 5 can move downward，Compression elastic piece 7，Oil jacket pressure reduction is the biggest，The displacement of lower sealing ring 5 can be the biggest，Opening between lower sealing ring 5 and upper sealing ring 4 increases，Liquid can be discharged from the second liquid outlet 102，When in sliding sleeve switch, the pressure of liquid reduces，Upper sealing ring 5 first moves upward in the effect of elastic component 7，Carry out the second liquid outlet 102 sealing throttling，The chock pressure difference in sliding sleeve is made to be maintained at 1.5Mpa，Can be seen that employing the technical program，Compare with existing sliding sleeve switch，Existing sliding sleeve switch only has single liquid outlet，The size of liquid outlet can not be changed according to operational discharge capacity size，Pressure in sliding sleeve switch can not be released，Unstable situation occurs，And this programme can change the bore of liquid outlet according to the increase of the pressure in sliding sleeve switch and then change liquid outlet quantity，Discharge the chock pressure difference in sliding sleeve switch，This sliding sleeve switch is the most stable when using，Meet huge discharge sand fracturing construction demand.
In the above-described embodiments, in order to sliding sleeve switch is not when working, better tightness at second liquid outlet 102, upper sealing ring 4 and the lower sealing ring 5 can being easily opened outside the second liquid outlet 102 during using, make it separate, therefore described upper sealing ring 4 forms inclined-plane from the surface of the end of inner circle to cylindrical, described lower sealing ring 5 forms an interior inclined-plane coordinated with outer inclined-plane from the surface of the end face of cylindrical to inner circle, the interior inclined-plane of described lower sealing ring 5 is pressed on the outer inclined-plane of upper sealing ring 4 and is in sealing contact, during work, liquid can be to 5 one outside pressure of lower sealing ring, make to stick up outside it, when there is breach with upper sealing ring 4 in lower sealing ring 5, under the effect of big pressure, lower sealing ring 5 can promote lining 6, lining 6 and then compression elastic piece 7.
In above-mentioned enforcement, the practical spring of elastic component 7 or gum elastic, use spring and gum elastic, saved cost, and can be fully achieved the use requirement of this sliding sleeve switch.
In the above-described embodiments, in order to sliding sleeve switch is during using, can very pine put in precalculated position, will not cause colliding putting into precalculated position because of the structure on surface, to sliding sleeve switch produce infringement, therefore described top connection 1, upper sealing ring 4, lower sealing ring 5, lining 6, elastic component 7, lower contact 9 maximum outside diameter identical.
Exemplified as above is only the illustration to the present invention, is not intended that the restriction to protection scope of the present invention, within the every and same or analogous design of the present invention belongs to protection scope of the present invention.Parts that the present embodiment describes the most in detail and structure belong to the well-known components of the industry and common structure or conventional means, describe the most one by one.
Claims (8)
1. a reducing sliding sleeve switch, including top connection (1), lower contact (9), the sliding sleeve (3) of slip in top connection (1) and lower contact (9), described top connection (1) is sealedly and fixedly connected with lower contact (9), it is characterized in that, described top connection (1) offers the first liquid outlet (101) and the second liquid outlet (102) the most successively, described sliding sleeve (3) is connected by sliding sleeve shear pin (2) with top connection (1), and sliding sleeve shear pin (2) is positioned at the upper end of the first liquid outlet (101)；
The middle part of described top connection (1) is arranged with upper sealing ring (4), lower sealing ring (5), lining (6), elastic component (7) the most successively, described upper sealing ring (4) is fixing with top connection (1) to be connected, described upper sealing ring (4) is in sealing contact with lower sealing ring (5), and the place of being in sealing contact is positioned at the exit of the second liquid outlet (102), described lower sealing ring (5) is fixing with lining (6) to be connected, described lining (6) is fixing with elastic component (7) to be connected, and described elastic component (7) is fixing with lower contact (9) to be connected.
A kind of reducing sliding sleeve switch the most according to claim 1, it is characterized in that, described upper sealing ring (4) forms inclined-plane from the surface of the end of inner circle to cylindrical, described lower sealing ring (5) forms an interior inclined-plane coordinated with outer inclined-plane from the surface of the end face of cylindrical to inner circle, and the interior inclined-plane of described lower sealing ring (5) is pressed on the outer inclined-plane of upper sealing ring (4) and is in sealing contact.
A kind of reducing sliding sleeve switch the most according to claim 1 and 2, it is characterised in that the end face of described upper sealing ring (4) and the upper surface of the second liquid outlet (102) are concordant.
A kind of reducing sliding sleeve switch the most according to claim 1, it is characterised in that described elastic component (7) is spring or compressible rubber.
A kind of reducing sliding sleeve switch the most according to claim 1, it is characterised in that described top connection (1), upper sealing ring (4), lower sealing ring (5), lining (6), elastic component (7), the maximum outside diameter of lower contact (9) are identical.
A kind of reducing sliding sleeve switch the most according to claim 1, it is characterised in that described top connection (1) is threaded connection with lower contact (9).
A kind of reducing sliding sleeve switch the most according to claim 6, it is characterised in that described top connection (1) is directly connected by retaining shear pin with lower contact (9).
A kind of reducing sliding sleeve switch the most according to claim 1, it is characterized in that, between described top connection (1) and sliding sleeve (3), between described top connection (1) and upper sealing ring (4), between described top connection (1) and lining (6), between described top connection (1) and lower contact (9), between described lining (6) and lower sealing ring (5), be designed with sealing ring (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410463229.9A CN104234662B (en) | 2014-09-12 | 2014-09-12 | A kind of reducing sliding sleeve switch |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410463229.9A CN104234662B (en) | 2014-09-12 | 2014-09-12 | A kind of reducing sliding sleeve switch |
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| Publication Number | Publication Date |
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| CN104234662A CN104234662A (en) | 2014-12-24 |
| CN104234662B true CN104234662B (en) | 2016-09-14 |
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| CN201410463229.9A Active CN104234662B (en) | 2014-09-12 | 2014-09-12 | A kind of reducing sliding sleeve switch |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401532B (en) * | 2015-07-27 | 2018-06-22 | 中国石油化工股份有限公司 | Sliding sleeve switch instrument |
| CN106930742A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | Opening method of damaged fracturing sliding sleeve |
| CN108590578B (en) * | 2018-04-25 | 2020-07-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Sliding sleeve mechanism capable of being repeatedly opened and closed for sleeve sliding sleeve |
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| CN201321840Y (en) * | 2008-12-15 | 2009-10-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Constant pressure valve used for oil field well completion |
| CN201358755Y (en) * | 2009-02-17 | 2009-12-09 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Underground switch slide bushing |
| CN202064831U (en) * | 2011-05-13 | 2011-12-07 | 中国石油天然气集团公司 | Oil pressure type two-stage reducing stabilizer |
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| CN204082091U (en) * | 2014-09-12 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of reducing sliding sleeve switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9677380B2 (en) * | 2012-12-13 | 2017-06-13 | Weatherford Technology Holdings, Llc | Sliding sleeve having inverting ball seat |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201193504Y (en) * | 2008-04-21 | 2009-02-11 | 毛元红 | Big-diameter sliding bush switch |
| CN201321840Y (en) * | 2008-12-15 | 2009-10-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Constant pressure valve used for oil field well completion |
| CN201358755Y (en) * | 2009-02-17 | 2009-12-09 | 中国石油化工股份有限公司中原油田分公司采油工程技术研究院 | Underground switch slide bushing |
| CN202064831U (en) * | 2011-05-13 | 2011-12-07 | 中国石油天然气集团公司 | Oil pressure type two-stage reducing stabilizer |
| CN202673243U (en) * | 2012-07-06 | 2013-01-16 | 金显军 | Ocean oil well hydraulic sliding sleeve device |
| CN102966332A (en) * | 2012-12-12 | 2013-03-13 | 山东瑞丰石油技术有限责任公司 | Sliding sleeve switch tool |
| CN204082091U (en) * | 2014-09-12 | 2015-01-07 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of reducing sliding sleeve switch |
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| CN104234662A (en) | 2014-12-24 |
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