CN104234662A - Variable-diameter sliding sleeve switch - Google Patents
Variable-diameter sliding sleeve switch Download PDFInfo
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- CN104234662A CN104234662A CN201410463229.9A CN201410463229A CN104234662A CN 104234662 A CN104234662 A CN 104234662A CN 201410463229 A CN201410463229 A CN 201410463229A CN 104234662 A CN104234662 A CN 104234662A
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- sliding sleeve
- sealing ring
- top connection
- liquid outlet
- fixedly connected
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Abstract
The invention provides a variable-diameter sliding sleeve switch. The variable-diameter sliding sleeve switch comprises an upper joint, a lower joint and a sliding sleeve which can slide in the upper joint and the lower joint, wherein the upper joint and the lower joint are hermetically and fixedly connected, the upper joint is sequentially provided with a first liquid outlet and a second liquid outlet from top to bottom, the sliding sleeve and the upper joint are connected through a sliding sleeve shear pin and the sliding sleeve is located at the upper end of the first liquid outlet; an upper sealing ring, a lower sealing ring, a bushing and an elastic piece are sequentially sheathed at the middle part of the upper joint, the upper sealing ring is fixedly connected with the upper joint, the upper sealing ring is in sealed contact with the lower sealing ring, the sealed contact position is located at an exit of the second liquid outlet, the lower sealing ring is fixedly connected with the bushing, the bushing is fixedly connected with the elastic piece and the elastic piece is fixedly connected with the lower joint. The variable-diameter sliding sleeve switch has the advantages that the structure is simple, the variable-diameter sliding sleeve switch is convenient to use, the magnitude of the caliber of the liquid outlet can be changed according to different pressure during use, and a great amount of sand fracturing construction demands are satisfied.
Description
Technical field
The present invention relates to oil gas field stimulation technology field, be one of underground operation tool commonly used in the operation of oil gas field reservoir reconstruction, be specially adapted 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, more effectively transforms, carried out the research of fixed tubular column multilevel hierarchy fracturing tool to reservoir.In multilevel hierarchy pressing crack construction, mostly adopt K344 packer and sliding sleeve switch to realize packing and the construction of interlayer.The many utilizations of current sliding sleeve switch be if Authorization Notice No. is CN 2898283Y, application number is 200620112834.2, disclosed a kind of buffering sliding-casing switch, technology contents is for comprising top connection, lower contact, through hole, sealing ring, steel ball, spring, sliding sleeve, top connection is connected with lower contact by sealing ring, and top connection has through hole, has sliding sleeve in it, there is steel ball at the sliding sleeve seat of honour, and spring supporting is arranged at bottom; Disclosed in can finding out, a kind of size of liquid outlet (through hole) 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, can not discharge pressure timely, cause hypertonia and packer setting operating difficulties in instrument at work, a large amount of sand fracturing construction demand can not be met.
Summary of the invention
For the problems referred to above, the invention provides one, structure is simple, easy to use, the size of the bore of liquid outlet can be changed according to the difference of pressure in the process used, 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 by the following technical solutions, a kind of reducing sliding sleeve switch, comprise top connection, lower contact, the sliding sleeve slided in top connection and lower contact, described top connection and lower contact are sealedly and fixedly connected, described top connection offers the first liquid outlet and the second liquid outlet from the top down 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 also arranged with upper sealing ring, lower sealing ring from the top down successively, lining, elastic component, described upper sealing ring is fixedly connected with top connection, described upper sealing ring seals with lower sealing ring and contacts, and sealing contact position is positioned at the exit of the second liquid outlet, described lower sealing ring is fixedly connected with lining, and described lining is fixedly connected with elastic component, and described elastic component is fixedly connected with lower contact.
Further, the surface of described upper sealing ring from the end of inner circle to cylindrical forms inclined-plane, the surface of described lower sealing ring from the end face of cylindrical to inner circle formed one to coordinate with outer inclined-plane in inclined-plane, the outer inclined-plane that the interior inclined-plane of described lower sealing ring is pressed in upper sealing ring carries out sealing and contacts.
Further, the end face of described upper sealing ring is concordant with the upper surface of the second liquid outlet.
Further, described elastic component is spring or compressible rubber.
Further, the maximum outside diameter of described top connection, upper sealing ring, lower sealing ring, lining, elastic component, lower contact.
Further, described top connection and lower contact are threaded connection.
Further, described top connection and lower contact are directly connected by retaining shear pin.
Further, all sealing ring is provided with 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.
The present invention adopts above-mentioned technical scheme, have the following advantages: 1, two liquid outlets being provided with of sliding sleeve, one is immutable bore liquid outlet, one increases according to the pressure in sliding sleeve, the bore of liquid outlet can become large, make the pressure in sliding sleeve be in a stable pressure, ensure that the reliability of sliding sleeve, meet huge discharge sand fracturing construction demand simultaneously, 2, structure is simple, two liquid outlets that top connection is provided with, a liquid outlet is sealed by upper sealing ring and lower sealing ring, lower sealing ring is connected with lower contact with elastic component by lining simultaneously, upper sealing ring is connected with top connection, when the pressure in sliding sleeve constantly increases, be greater than elastic component 7 when assembling precompression, liquid can push lower sealing ring open by this liquid outlet, the sealing contact position of upper sealing ring and lower sealing ring can change according to the pressure in sliding sleeve simultaneously, the i.e. lower sealing ring compression elastic piece when pressure increases, opening becomes large, when pressure reduces, diminish at the elastic force under shed of elastic component, thus make the pressure in sliding sleeve 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 below in conjunction with drawings and Examples.
As a kind of reducing sliding sleeve switch of Fig. 1, comprise 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 from the top down 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 also arranged with upper sealing ring 4, lower sealing ring 5 from the top down successively, lining 6, elastic component 7, described upper sealing ring 4 is fixedly connected with top connection 1, described upper sealing ring 4 seals with lower sealing ring 5 and contacts, and sealing contact position is positioned at the exit of the second liquid outlet 102, described lower sealing ring 5 is fixedly connected with lining 6, and described lining 6 is fixedly connected with elastic component 7, and described elastic component 7 is fixedly connected with lower contact 9.
In above-mentioned, the internal and external threads that top connection 1 is provided with by self with lower contact 9 is fixedly connected with, in order to make under using for a long time, top connection 1 and lower contact 9 can not loosen, be in the state of a sealing, therefore also have passed retaining shear pin 8 between top connection 1 with lower contact 9 and be fixed and be connected;
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 fixed by the mode such as screw or welding and are connected, upon connection in order to ensure its sealing, can not the accidents such as leakage of oil be there is, 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, all be provided with sealing ring 10;
Operationally, this sliding sleeve switch is lowered into precalculated position together with tubing string, now sliding sleeve switch is in closed condition under sliding sleeve shutoff, when needs sliding sleeve switch works, steel ball is dropped into from well head, when steel ball drop is to sliding sleeve 3, and pressurize, when pressure reaches the maximum pressure that sliding sleeve shear pin 1 bears, sliding sleeve shear pin 2 ruptures, sliding sleeve 3 is separated 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 constantly increases, oil jacket pressure reduction constantly increases, when the upper end of sliding sleeve 3 moves down into the second liquid outlet 102, liquid can be exerted pressure by the second liquid outlet 102 pairs of lower sealing rings 5, when oil jacket pressure reduction is greater 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 larger, the displacement of lower sealing ring 5 can be larger, opening between lower sealing ring 5 and upper sealing ring 4 increases, liquid can be discharged from the second liquid outlet 102, when the pressure of liquid in sliding sleeve switch reduces, upper sealing ring 5 first moves upward in the effect of elastic component 7, sealing throttling is carried out to the second liquid outlet 102, the chock pressure difference in sliding sleeve is made to remain on 1.5Mpa, employing the technical program can be found out, 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 discharged, there is unstable situation, 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, it is more stable when this sliding sleeve switch uses, meet huge discharge sand fracturing construction demand.
In the above-described embodiments, in order to sliding sleeve switch is not when working, second liquid outlet 102 place better tightness, can be easy to open the upper sealing ring 4 outside the second liquid outlet 102 and lower sealing ring 5 in the process used, make it be separated, therefore the surface of described upper sealing ring 4 from the end of inner circle to cylindrical forms inclined-plane, inclined-plane in the surface formation one of described lower sealing ring 5 from the end face of cylindrical to inner circle coordinates with outer inclined-plane, the outer inclined-plane that the interior inclined-plane of described lower sealing ring 5 is pressed in upper sealing ring 4 carries out sealing contact, in the process of work, liquid can to the outside pressure of lower sealing ring 5 one, make to stick up outside it, when there is breach with upper sealing ring 4 in lower sealing ring 5, under the effect of large 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 elastic caoutchouc, use spring and elastic caoutchouc, saved cost, and can reach the instructions for use of this sliding sleeve switch completely.
In the above-described embodiments, in order to sliding sleeve switch is in the process used, can very pine put in precalculated position, can not cause colliding putting into precalculated position because of the structure on surface, infringement is produced to sliding sleeve switch, therefore the maximum outside diameter of described top connection 1, upper sealing ring 4, lower sealing ring 5, lining 6, elastic component 7, lower contact 9 is identical.
More than exemplifying is only illustrate of the present invention, does not form the restriction to protection scope of the present invention, everyly all belongs within protection scope of the present invention with the same or analogous design of the present invention.The parts that the present embodiment does not describe in detail and structure belong to the well-known components of the industry and common structure or conventional means, do not describe one by one here.
Claims (8)
1. a reducing sliding sleeve switch, comprise top connection (1), lower contact (9), the sliding sleeve (3) slided in top connection (1) and lower contact (9), described top connection (1) and lower contact (9) are sealedly and fixedly connected, it is characterized in that, described top connection (1) offers the first liquid outlet (101) and the second liquid outlet (102) from the top down 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 also arranged with upper sealing ring (4), lower sealing ring (5) from the top down successively, lining (6), elastic component (7), described upper sealing ring (4) is fixedly connected with top connection (1), described upper sealing ring (4) seals with lower sealing ring (5) and contacts, and sealing contact position is positioned at the exit of the second liquid outlet (102), described lower sealing ring (5) is fixedly connected with lining (6), described lining (6) is fixedly connected with elastic component (7), and described elastic component (7) is fixedly connected with lower contact (9).
2. a kind of reducing sliding sleeve switch according to claim 1, it is characterized in that, the surface of described upper sealing ring (4) from the end of inner circle to cylindrical forms inclined-plane, the surface of described lower sealing ring (5) from the end face of cylindrical to inner circle formed one to coordinate with outer inclined-plane in inclined-plane, the outer inclined-plane that the interior inclined-plane of described lower sealing ring (5) is pressed in upper sealing ring (4) carries out sealing and contacts.
3. a kind of reducing sliding sleeve switch according to claim 1 and 2, is characterized in that, the end face of described upper sealing ring (4) is concordant with the upper surface of the second liquid outlet (102).
4. a kind of reducing sliding sleeve switch according to claim 1, is characterized in that, described elastic component (7) is spring or compressible rubber.
5. a kind of reducing sliding sleeve switch according to claim 1, is characterized in that, the maximum outside diameter of described top connection (1), upper sealing ring (4), lower sealing ring (5), lining (6), elastic component (7), lower contact (9) is identical.
6. a kind of reducing sliding sleeve switch according to claim 1, is characterized in that, described top connection (1) and lower contact (9) are threaded connection.
7. a kind of reducing sliding sleeve switch according to claim 6, is characterized in that, described top connection (1) is directly connected by retaining shear pin with lower contact (9).
8. a kind of reducing sliding sleeve switch 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 all provided 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
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| CN104234662A true CN104234662A (en) | 2014-12-24 |
| CN104234662B CN104234662B (en) | 2016-09-14 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN104234662B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401532A (en) * | 2015-07-27 | 2017-02-15 | 中国石油化工股份有限公司 | Sliding sleeve switch tool |
| CN106930742A (en) * | 2015-12-31 | 2017-07-07 | 中国石油天然气股份有限公司 | The deployment method of impaired fracturing sliding bush |
| CN108590578A (en) * | 2018-04-25 | 2018-09-28 | 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 | A kind of repeatable switching sliding sleeve mechanism for sliding sleeve of bushing |
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| 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 double-stage tapered 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 |
| US20140166112A1 (en) * | 2012-12-13 | 2014-06-19 | Weatherford/Lamb, Inc. | Sliding Sleeve Having Contracting, Dual Segmented Ball Seat |
| 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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2014
- 2014-09-12 CN CN201410463229.9A patent/CN104234662B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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| CN202064831U (en) * | 2011-05-13 | 2011-12-07 | 中国石油天然气集团公司 | Oil pressure type double-stage tapered stabilizer |
| CN202673243U (en) * | 2012-07-06 | 2013-01-16 | 金显军 | Ocean oil well hydraulic sliding sleeve device |
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| US20140166112A1 (en) * | 2012-12-13 | 2014-06-19 | Weatherford/Lamb, Inc. | Sliding Sleeve Having Contracting, Dual Segmented Ball Seat |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401532A (en) * | 2015-07-27 | 2017-02-15 | 中国石油化工股份有限公司 | Sliding sleeve switch tool |
| 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 | The deployment method of impaired fracturing sliding bush |
| CN108590578A (en) * | 2018-04-25 | 2018-09-28 | 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 | A kind of repeatable switching sliding sleeve mechanism for sliding sleeve of bushing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104234662B (en) | 2016-09-14 |
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