CN103806867A - Flow-controllable sliding sleeve - Google Patents
Flow-controllable sliding sleeve Download PDFInfo
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- CN103806867A CN103806867A CN201410046491.3A CN201410046491A CN103806867A CN 103806867 A CN103806867 A CN 103806867A CN 201410046491 A CN201410046491 A CN 201410046491A CN 103806867 A CN103806867 A CN 103806867A
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Abstract
The invention relates to the technical field of sliding sleeves for well-completion practice, and discloses a flow-controllable sliding sleeve. The flow-controllable sliding sleeve comprises an upper joint, a double-female joint, a lower joint and an inner sliding sleeve. The outer side of the lower portion of the upper joint is fixed together with the upper portion of the double-female joint, the lower portion of the double-female joint is fixed together with the outer side of the upper portion of the lower joint, a first annular groove, a second annular groove and a third annular groove are sequentially formed in the inner side of the lower joint at intervals from top to bottom, and the inner sliding sleeve is sequentially arranged on the inner side of the upper joint, the inner side of the double-female joint and the inner side of the lower joint from top to bottom in a sleeved mode. The flow-controllable sliding sleeve is reasonable and compact in structure and convenient to use, in the well-completion practice process, a communication channel between the inner sliding sleeve and an oil gas layer can be closed through the arrangement of an upper strip-shaped through hole, a radial through hole, a radial outer through hole, the first annular groove, the second annular groove and the third annular groove, and meanwhile the flow of oil gas entering the flow-controllable sliding sleeve can be changed according to oil recovery requirements.
Description
Technical field
the present invention relates to the sliding sleeve technical field of completion practice, is a kind of flow-controllable sliding sleeve.
Background technology
completion practice is the important technical that is connected drilling well and oil producing operation, and meanwhile, completion practice is again the great underground work of risk, and therefore, the success or not of completion practice, will directly cause the success or failure of a bite well.Particularly at present along with the deepening continuously of shale gas and the unconventional exploration of oil and gas field of fine and close wet goods, people for the research of carrying out such Reservoir Development also in continuous reinforcement.For the exploitation of such oil-gas reservoir, carry out the pressure break completion technological means that is also absolutely necessary.No matter be the completion practice of conventional gas and oil Tibetan or the completion practice of unconventional oil/gas well, an indispensable technological means utilizes sliding sleeve to exploit bottom oil reservoir exactly.In the completion practice of hiding at conventional gas and oil, utilize sliding sleeve to carry out UNICOM to oil reservoir and oil pipe inner chamber.Current conventional sliding sleeve can not change oil gas and enter the uninterrupted in sliding sleeve, meanwhile, can not close the through hole on sliding sleeve according to the actual needs recovering the oil, thereby destroy oil-gas reservoir.
Summary of the invention
the invention provides a kind of flow-controllable sliding sleeve, overcome the deficiency of above-mentioned prior art, it can effectively solve the problem that can not change the uninterrupted entering in sliding sleeve and can not close the through hole on sliding sleeve that existing sliding sleeve exists in actual use.
technical scheme of the present invention realizes by following measures: a kind of flow-controllable sliding sleeve, comprise top connection, two female joints, lower contact and inner sliding sleeve, the lower outside of top connection is fixed together with two female joints top, the bottom of two female joints and the upper outside of lower contact are fixed together, sequentially be arranged at intervals with first ring connected in star from top to bottom in lower contact inner side, the second annular groove and the 3rd annular groove, inner sliding sleeve is sequentially sleeved on top connection from top to bottom, the inner side of two female joints and lower contact, be fixed with in the lower end outside of inner sliding sleeve can be corresponding with the second annular groove and the 3rd annular groove positive stop lug boss, positive stop lug boss is sleeved in first ring connected in star, circumferentially there is the radially accessibke porosity that is no less than two at the middle part of two female joints, circumferentially have on the top of inner sliding sleeve can with the upper strip through-hole that radially accessibke porosity communicates, inner side, lower end at inner sliding sleeve is provided with limited impression, in limited impression, circumferentially there is lower strip through-hole, on inner sliding sleeve below upper strip through-hole, have can with the radial direction through hole that radially accessibke porosity communicates, between inner sliding sleeve above accessibke porosity radially and two female joint, be installed with the first black box, between inner sliding sleeve below accessibke porosity radially and two female joint, be installed with the second black box, be provided with external screw thread or internal thread on top connection top and lower contact bottom.
the further optimization and/or improvements to foregoing invention technical scheme below:
the buffering ring platform that above-mentioned pair of female joint inner side can have with radially accessibke porosity communicates.
the upper inner of above-mentioned pair of female joint can have the first joint ring platform, between the first joint ring platform and the bottom of top connection, be installed with the first black box, be positioned at above the first joint ring platform two female joints on have fixed card slot, the first black box comprises the first back-up ring, the second back-up ring, the 3rd back-up ring, upper sealing ring, the 4th back-up ring, the 5th back-up ring, the 6th back-up ring, fixing snap ring, the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjust snap ring and the tenth back-up ring, the first back-up ring, the second back-up ring, the 3rd back-up ring, upper sealing ring, the 4th back-up ring, the 5th back-up ring, the 6th back-up ring, fixing snap ring, the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjusting snap ring and the tenth back-up ring sequentially arranges from top to bottom, the outside of fixing snap ring is positioned at fixed card slot, two female joints inner side below accessibke porosity is radially fixed with the second joint ring platform, between the second joint ring platform and lower contact, be installed with the second black box, the second black box comprises the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjusts snap ring and the tenth back-up ring, and the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjustment snap ring and the tenth back-up ring are sequentially arranged from top to bottom.
can there be the outer groove communicating with radial direction through hole in the above-mentioned inner sliding sleeve corresponding with radial direction through hole outside, be distributed with the radially accessibke porosity of two circles from top to bottom along even circumferential at the middle part of two female joints, the quantity of the radially accessibke porosity of each circle is no less than two, top at inner sliding sleeve is distributed with strip through-hole along even circumferential, on inner sliding sleeve below upper strip through-hole, circumferentially have the radial direction through hole of two circles from top to bottom, the quantity of the radial direction through hole of each circle is no less than two.
the inner side, upper end of above-mentioned inner sliding sleeve can be fixed with convex platform.
the lower outside of above-mentioned top connection can be fixedly installed togather by screw thread with two female joints top, the bottom of two female joints and the upper outside of lower contact are fixedly installed togather by screw thread, between the upper outside of top connection and two female joint, be installed with auxiliary seal ring and secondary baffle, secondary baffle is positioned at the outside of auxiliary seal ring, between the bottom of two female joints and the upper outside of lower contact, be installed with auxiliary seal ring and secondary baffle, secondary baffle is positioned at the outside of auxiliary seal ring.
reasonable and compact in structure of the present invention, easy to use, it is in completion practice process, upper strip through-hole, radial direction through hole, radially the setting of accessibke porosity, first ring connected in star, the second annular groove and the 3rd annular groove can complete the communication passage of closing inner sliding sleeve and oil-gas Layer, meanwhile, can enter uninterrupted of the present invention according to the oil gas that need to change recovering the oil.
Accompanying drawing explanation
the master that accompanying drawing 1 is most preferred embodiment the first half of the present invention looks half section structural representation.
the master that accompanying drawing 2 is most preferred embodiment the latter half of the present invention looks half section structural representation.
accompanying drawing 3 is the local structure for amplifying schematic diagram at A place in accompanying drawing 1.
accompanying drawing 4 is the local structure for amplifying schematic diagram at B place in accompanying drawing 2
coding in accompanying drawing is respectively: 1 is top connection, 2 is two female joints, 3 is lower contact, 4 is inner sliding sleeve, 5 is first ring connected in star, 6 is the second annular groove, 7 is the 3rd annular groove, 8 is positive stop lug boss, 9 is accessibke porosity radially, 10 is upper strip through-hole, 11 is limited impression, 12 is lower strip through-hole, 13 is radial direction through hole, 14 is buffering ring platform, 15 is the first back-up ring, 16 is the second back-up ring, 17 is the 3rd back-up ring, 18 is upper sealing ring, 19 is the 4th back-up ring, 20 is the 5th back-up ring, 21 is the 6th back-up ring, 22 is fixing snap ring, 23 is the 7th back-up ring, 24 is the 8th back-up ring, 25 is lower seal, 26 is the 9th back-up ring, 27 for adjusting snap ring, 28 is the tenth back-up ring, 29 is outer groove, 30 is convex platform, 31 is auxiliary seal ring, 32 is secondary baffle, 33 is the first joint ring platform, 34 is the second joint ring platform.
The specific embodiment
the present invention is not subject to the restriction of following embodiment, can determine concrete embodiment according to technical scheme of the present invention and actual conditions.
in the present invention, 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 forward and backward, 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 invention will be further described:
as shown in accompanying drawing 1 to 4, this flow-controllable sliding sleeve comprises top connection 1, two female joints 2, lower contact 3 and inner sliding sleeve 4, the lower outside of top connection 1 is fixed together with two female joints 2 tops, the upper outside of the bottom of two female joints 2 and lower contact 3 is fixed together, sequentially be arranged at intervals with first ring connected in star 5 from top to bottom in lower contact 3 inner sides, the second annular groove 6 and the 3rd annular groove 7, inner sliding sleeve 4 is sequentially sleeved on top connection 1 from top to bottom, the inner side of two female joints 2 and lower contact 3, be fixed with in the lower end outside of inner sliding sleeve 4 can be corresponding with the second annular groove 6 and the 3rd annular groove 7 positive stop lug boss 8, positive stop lug boss 8 is sleeved in first ring connected in star 5, circumferentially there is the radially accessibke porosity 9 that is no less than two at the middle part of two female joints 2, circumferentially have on the top of inner sliding sleeve 4 can with the upper strip through-hole 10 that radially accessibke porosity 9 communicates, inner side, lower end at inner sliding sleeve 4 is provided with limited impression 11, in limited impression 11, circumferentially there is lower strip through-hole 12, on inner sliding sleeve 4 below upper strip through-hole 10, have can with the radial direction through hole 13 that radially accessibke porosity 9 communicates, between inner sliding sleeve 4 above accessibke porosity 9 radially and two female joint 2, be installed with the first black box, between inner sliding sleeve 4 below accessibke porosity 9 radially and two female joint 2, be installed with the second black box, be provided with external screw thread or internal thread on top connection 1 top and lower contact 3 bottoms.When positive stop lug boss 8 walks to first ring connected in star 5 when interior, upper strip through-hole 10 on inner sliding sleeve 4, lower strip through-hole 12 and radial direction through hole 13 and the state of accessibke porosity 9 in not communicating radially, now, the oil gas in inner sliding sleeve 4 outsides can not enter in inner sliding sleeve 4, thereby close the communication passage of oil-gas Layer and inside of the present invention, when positive stop lug boss 8 walks to the second annular groove 6 when interior, radial direction through hole 13 and the state of accessibke porosity 9 in communicating radially, now the oil gas of oil-gas Layer by radial direction through hole 13 a small amount of enter inside of the present invention, when positive stop lug boss 8 walks to the 3rd annular groove 7 when interior, upper strip through-hole 10 and the state of accessibke porosity 9 in communicating radially, now the oil gas of oil-gas Layer by radial direction through hole 13 a large amount of enter inside of the present invention, therefore, upper strip through-hole 10, radial direction through hole 13, radially accessibke porosity 9, first ring connected in star 5, the setting of the second annular groove 6 and the 3rd annular groove 7 can complete the communication passage of closing inner sliding sleeve 4 and oil-gas Layer, simultaneously, can enter uninterrupted of the present invention according to the oil gas that need to change recovering the oil.
can according to actual needs, above-mentioned flow-controllable sliding sleeve be made further optimization and/or improvements:
as shown in accompanying drawing 1 to 4, at the buffering ring platform 14 that two female joints 2 inner sides have with radially accessibke porosity 9 communicates.
as shown in accompanying drawing 1 to 4, there is the first joint ring platform 33 in the upper inner of two female joints 2, between the first joint ring platform 33 and the bottom of top connection 1, be installed with the first black box, be positioned at above the first joint ring platform 33 two female joints 2 on have fixed card slot, the first black box comprises the first back-up ring 15, the second back-up ring 16, the 3rd back-up ring 17, upper sealing ring 18, the 4th back-up ring 19, the 5th back-up ring 20, the 6th back-up ring 21, fixing snap ring 22, the 7th back-up ring 23, the 8th back-up ring 24, lower seal 25, the 9th back-up ring 26, adjust snap ring 27 and the tenth back-up ring 28, the first back-up ring 15, the second back-up ring 16, the 3rd back-up ring 17, upper sealing ring 18, the 4th back-up ring 19, the 5th back-up ring 20, the 6th back-up ring 21, fixing snap ring 22, the 7th back-up ring 23, the 8th back-up ring 24, lower seal 25, the 9th back-up ring 26, adjusting snap ring 27 and the tenth back-up ring 28 sequentially arranges from top to bottom, the outside of fixing snap ring 22 is positioned at fixed card slot, two female joints 2 inner sides below accessibke porosity 9 are radially fixed with the second joint ring platform 34, between the second joint ring platform 34 and lower contact 3, be installed with the second black box, the second black box comprises the 7th back-up ring 23, the 8th back-up ring 24, lower seal 25, the 9th back-up ring 26, adjusts snap ring 27 and the tenth back-up ring 28, the seven back-up rings 23, the 8th back-up ring 24, lower seal 25, the 9th back-up ring 26, adjusts snap ring 27 and the sequentially arrangement from top to bottom of the tenth back-up ring 28.In the process that the setting of fixing snap ring 22 and adjustment snap ring 27 can be slided at inner sliding sleeve 4, effectively prevent the loosening of the first back-up ring 15, the second back-up ring 16, the 3rd back-up ring 17, upper sealing ring 18, the 4th back-up ring 19, the 5th back-up ring 20, the 6th back-up ring 21, the 7th back-up ring 23, the 8th back-up ring 24, lower seal 25, the 9th back-up ring 26 and the tenth back-up ring 28, further improved sealing.
as shown in accompanying drawing 1 to 4, there is the outer groove 29 communicating with radial direction through hole 13 in the inner sliding sleeve corresponding with radial direction through hole 13 4 outsides, be distributed with the radially accessibke porosity 9 of two circles from top to bottom along even circumferential at the middle part of two female joints 2, the quantity of the radially accessibke porosity 9 of each circle is no less than two, top at inner sliding sleeve 4 is distributed with strip through-hole 10 along even circumferential, the radial direction through hole 13 that circumferentially has two circles on inner sliding sleeve 4 below upper strip through-hole 10 from top to bottom, the quantity of the radial direction through hole 13 of each circle is no less than two.
as shown in accompanying drawing 1 to 4, be fixed with convex platform 30 in the inner side, upper end of inner sliding sleeve 4.The setting of convex platform 30 can be by being lowered to aid, and aid is stuck in the bottom of convex platform 30, then by above carrying aid, the inner sliding sleeve after descending 4 resetted.
as shown in accompanying drawing 1 to 4, the lower outside of top connection 1 is fixedly installed togather by screw thread with two female joints 2 tops, the upper outside of the bottom of two female joints 2 and lower contact 3 is fixedly installed togather by screw thread, between the upper outside of top connection 1 and two female joint 2, be installed with auxiliary seal ring 31 and secondary baffle 32, secondary baffle 32 is positioned at the outside of auxiliary seal ring 31, between the bottom of two female joints 2 and the upper outside of lower contact 3, be installed with auxiliary seal ring 31 and secondary baffle 32, secondary baffle 32 is positioned at the outside of auxiliary seal ring 31.The setting of auxiliary seal ring 31 and secondary baffle 32 can further improve sealing.
above technical characterictic has formed most preferred embodiment of the present invention, 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 most preferred embodiment of the present invention: first, top connection 1 and lower contact 3 are fixedly installed togather by screw thread with external tubing string respectively, to promote member (existing known technology) seat on limited impression 11, descending by promoting member promotion inner sliding sleeve 4, in the time that the positive stop lug boss 8 on inner sliding sleeve 4 comes downwards to the second annular groove 6, radial direction through hole 13 is thereupon down to buffering ring platform 14 places, now, radial direction through hole 13 and the state of accessibke porosity 9 in communicating radially, then, the oil gas of two female joints 2 outsides sequentially by radially accessibke porosity 9 and radial direction through hole 13 a small amount of enter top connection 1, in the inner chamber that two female joints 2 and lower contact 3 form, continue to promote inner sliding sleeve 4 descending, in the time that the positive stop lug boss 8 on inner sliding sleeve 4 comes downwards to the 3rd annular groove 7, strip through-hole comes downwards to buffering ring platform 14 places, now, strip through-hole and the state of accessibke porosity 9 in communicating radially, then, the oil gas of two female joints 2 outsides sequentially by radially accessibke porosity 9 and strip through-hole a large amount of enter top connection 1, in the inner chamber that two female joints 2 and lower contact 3 form, carry out oil producing operation.
Claims (10)
1. a flow-controllable sliding sleeve, it is characterized in that comprising top connection, two female joints, lower contact and inner sliding sleeve, the lower outside of top connection is fixed together with two female joints top, the bottom of two female joints and the upper outside of lower contact are fixed together, sequentially be arranged at intervals with first ring connected in star from top to bottom in lower contact inner side, the second annular groove and the 3rd annular groove, inner sliding sleeve is sequentially sleeved on top connection from top to bottom, the inner side of two female joints and lower contact, be fixed with in the lower end outside of inner sliding sleeve can be corresponding with the second annular groove and the 3rd annular groove positive stop lug boss, positive stop lug boss is sleeved in first ring connected in star, circumferentially there is the radially accessibke porosity that is no less than two at the middle part of two female joints, circumferentially have on the top of inner sliding sleeve can with the upper strip through-hole that radially accessibke porosity communicates, inner side, lower end at inner sliding sleeve is provided with limited impression, in limited impression, circumferentially there is lower strip through-hole, on inner sliding sleeve below upper strip through-hole, have can with the radial direction through hole that radially accessibke porosity communicates, between inner sliding sleeve above accessibke porosity radially and two female joint, be installed with the first black box, between inner sliding sleeve below accessibke porosity radially and two female joint, be installed with the second black box, be provided with external screw thread or internal thread on top connection top and lower contact bottom.
2. flow-controllable sliding sleeve according to claim 1, is characterized in that the buffering ring platform that two female joints inner side has with radially accessibke porosity communicates.
3. flow-controllable sliding sleeve according to claim 1 and 2, the upper inner that it is characterized in that two female joints has the first joint ring platform, between the first joint ring platform and the bottom of top connection, be installed with the first black box, be positioned at above the first joint ring platform two female joints on have fixed card slot, the first black box comprises the first back-up ring, the second back-up ring, the 3rd back-up ring, upper sealing ring, the 4th back-up ring, the 5th back-up ring, the 6th back-up ring, fixing snap ring, the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjust snap ring and the tenth back-up ring, the first back-up ring, the second back-up ring, the 3rd back-up ring, upper sealing ring, the 4th back-up ring, the 5th back-up ring, the 6th back-up ring, fixing snap ring, the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjusting snap ring and the tenth back-up ring sequentially arranges from top to bottom, the outside of fixing snap ring is positioned at fixed card slot, two female joints inner side below accessibke porosity is radially fixed with the second joint ring platform, between the second joint ring platform and lower contact, be installed with the second black box, the second black box comprises the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjusts snap ring and the tenth back-up ring, and the 7th back-up ring, the 8th back-up ring, lower seal, the 9th back-up ring, adjustment snap ring and the tenth back-up ring are sequentially arranged from top to bottom.
4. flow-controllable sliding sleeve according to claim 1 and 2, it is characterized in that there is the outer groove communicating with radial direction through hole in the inner sliding sleeve outside corresponding with radial direction through hole, be distributed with the radially accessibke porosity of two circles from top to bottom along even circumferential at the middle part of two female joints, the quantity of the radially accessibke porosity of each circle is no less than two, top at inner sliding sleeve is distributed with strip through-hole along even circumferential, on inner sliding sleeve below upper strip through-hole, circumferentially have the radial direction through hole of two circles from top to bottom, the quantity of the radial direction through hole of each circle is no less than two.
5. flow-controllable sliding sleeve according to claim 3, it is characterized in that there is the outer groove communicating with radial direction through hole in the inner sliding sleeve outside corresponding with radial direction through hole, be distributed with the radially accessibke porosity of two circles from top to bottom along even circumferential at the middle part of two female joints, the quantity of the radially accessibke porosity of each circle is no less than two, top at inner sliding sleeve is distributed with strip through-hole along even circumferential, on inner sliding sleeve below upper strip through-hole, circumferentially have the radial direction through hole of two circles from top to bottom, the quantity of the radial direction through hole of each circle is no less than two.
6. flow-controllable sliding sleeve according to claim 1 and 2, is characterized in that the inner side, upper end of inner sliding sleeve is fixed with convex platform.
7. flow-controllable sliding sleeve according to claim 3, is characterized in that the inner side, upper end of inner sliding sleeve is fixed with convex platform.
8. flow-controllable sliding sleeve according to claim 4, is characterized in that the inner side, upper end of inner sliding sleeve is fixed with convex platform.
9. flow-controllable sliding sleeve according to claim 5, is characterized in that the inner side, upper end of inner sliding sleeve is fixed with convex platform.
10. according to the flow-controllable sliding sleeve described in claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 8 or 9, the lower outside that it is characterized in that top connection is fixedly installed togather by screw thread with two female joints top, the bottom of two female joints and the upper outside of lower contact are fixedly installed togather by screw thread, between the upper outside of top connection and two female joint, be installed with auxiliary seal ring and secondary baffle, secondary baffle is positioned at the outside of auxiliary seal ring, between the bottom of two female joints and the upper outside of lower contact, be installed with auxiliary seal ring and secondary baffle, secondary baffle is positioned at the outside of auxiliary seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046491.3A CN103806867B (en) | 2014-02-10 | 2014-02-10 | Flow-controllable sliding sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410046491.3A CN103806867B (en) | 2014-02-10 | 2014-02-10 | Flow-controllable sliding sleeve |
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| Publication Number | Publication Date |
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| CN103806867A true CN103806867A (en) | 2014-05-21 |
| CN103806867B CN103806867B (en) | 2017-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410046491.3A Active CN103806867B (en) | 2014-02-10 | 2014-02-10 | Flow-controllable sliding sleeve |
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| CA2249128A1 (en) * | 1998-10-01 | 2000-04-01 | Stellarton Energy Corporation | Fluid injection tubing assembly and method |
| US6253853B1 (en) * | 1998-10-05 | 2001-07-03 | Stellarton Energy Corporation | Fluid injection tubing assembly and method |
| CN202000962U (en) * | 2010-12-17 | 2011-10-05 | 中国石油集团长城钻探工程有限公司 | Control sliding sleeve switch for segmented exploitation of oil and gas well |
| CN202596667U (en) * | 2012-05-03 | 2012-12-12 | 中国石油集团西部钻探工程有限公司 | Bypass type oil pipe floating valve |
| CN202946131U (en) * | 2012-12-07 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve |
| CN203050662U (en) * | 2012-11-26 | 2013-07-10 | 东营市兆鑫工贸有限责任公司 | Hydraulic sliding sleeve switch |
| CN203742551U (en) * | 2014-02-10 | 2014-07-30 | 中国石油集团西部钻探工程有限公司 | Sliding sleeve with flow control function |
-
2014
- 2014-02-10 CN CN201410046491.3A patent/CN103806867B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2249128A1 (en) * | 1998-10-01 | 2000-04-01 | Stellarton Energy Corporation | Fluid injection tubing assembly and method |
| US6253853B1 (en) * | 1998-10-05 | 2001-07-03 | Stellarton Energy Corporation | Fluid injection tubing assembly and method |
| CN202000962U (en) * | 2010-12-17 | 2011-10-05 | 中国石油集团长城钻探工程有限公司 | Control sliding sleeve switch for segmented exploitation of oil and gas well |
| CN202596667U (en) * | 2012-05-03 | 2012-12-12 | 中国石油集团西部钻探工程有限公司 | Bypass type oil pipe floating valve |
| CN203050662U (en) * | 2012-11-26 | 2013-07-10 | 东营市兆鑫工贸有限责任公司 | Hydraulic sliding sleeve switch |
| CN202946131U (en) * | 2012-12-07 | 2013-05-22 | 中国石油集团西部钻探工程有限公司 | Pawl spring clamping buckle type self-locking pressing crack sliding sleeve |
| CN203742551U (en) * | 2014-02-10 | 2014-07-30 | 中国石油集团西部钻探工程有限公司 | Sliding sleeve with flow control function |
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| CN103806867B (en) | 2017-01-11 |
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Effective date of registration: 20201106 Address after: 100120 Beijing Xicheng District six laying Kang Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC Xibu Drilling Engineering Co.,Ltd. Address before: 830026 science and technology management division, West drilling and Drilling Engineering Research Institute, No. 326, South Central Road, Urumqi, the Xinjiang Uygur Autonomous Region Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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