CN104373076A - Composite rubber sleeve device - Google Patents
Composite rubber sleeve device Download PDFInfo
- Publication number
- CN104373076A CN104373076A CN201410585895.XA CN201410585895A CN104373076A CN 104373076 A CN104373076 A CN 104373076A CN 201410585895 A CN201410585895 A CN 201410585895A CN 104373076 A CN104373076 A CN 104373076A
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- China
- Prior art keywords
- pole
- center
- sleeve
- groove
- outside
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/127—Packers; Plugs with inflatable sleeve
- E21B33/1277—Packers; Plugs with inflatable sleeve characterised by the construction or fixation of the sleeve
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Gasket Seals (AREA)
Abstract
The invention relates to the technical field of oil field rubber sleeves, in particular to a composite rubber sleeve device. The composite rubber sleeve device comprises a center rod, a claw sleeve, a sleeve and a push cylinder, wherein an upper clamping table is fixed at the outer side of the upper end of the center rod; the claw sleeve is fixedly connected to the outer side of the middle of the center rod through a first shear pin; upper elastic clamping claws capable of inwards contraction are distributed at the lower end of the claw sleeve; upper clamping claw bosses are fixed at the lower ends of all the upper elastic clamping claws; and upper clamping claw boss mounting grooves fitting the upper clamping claw bosses are formed in the outer side of the center rod. The composite rubber sleeve device is reasonable and compact in structure, is convenient to use, realizes the purpose of long-time sealing through the cooperation of the center rod, the claw sleeve, the sleeve, the push cylinder, a self-expanding rubber sleeve when contacting water or oil, an expansive rubber sleeve, the first shear pin and a second shear pin, has the characteristics of good sealing effect, safety and reliability, improves the production efficiency, and prevents the potential safety hazard.
Description
Technical field
the present invention relates to oil field packing element technical field, is a kind of compound adhesive cartridge.
Background technology
point to adopt mixed the adopting of conventional well, exceptional well, control in the construction operation processes such as water blocking water, reservoir reconstruction, often need to carry out packing to each well different reservoir.This construction technology need one can with pitching ball seat with the use of, the new tool of construction operation such as to enter under not affecting later stage tubing string.And the packer of routine can only effective sealing fast, when time one its seal failure permanent, there is potential safety hazard in therefore conventional control tool, and tool reliability is low.
Summary of the invention
the invention provides a kind of compound adhesive cartridge, overcome the deficiency of above-mentioned prior art, it effectively can solve the low problem with there is potential safety hazard of conventional packer reliability.
technical scheme of the present invention is realized by following measures: a kind of compound adhesive cartridge, comprises center-pole, pawl cover, sleeve and pushing cylinder; Top fastening station is fixed with outside the upper end of center-pole, pawl cover is fixedly connected with by the first shear pin outside the middle part of center-pole, the upper elastic card claw that can inwardly shrink is distributed with in the lower end of pawl cover, the lower end of elastic card claw is fixed with upper clipping claw boss on each, has the upper clipping claw boss mounting groove matched with upper clipping claw boss in the outside of center-pole; The outside of the center-pole between top fastening station and pawl cover is set with from top to bottom successively meets oil chance water self-expansion type packing element and expansion glue tube, retaining ring is installed with at the lower outside of center-pole, the first land is fixed with at the lower end inside of sleeve, the upper end of sleeve is sleeved on the lower outside of pawl cover, the first land to be sleeved on center-pole and seat on the upper surface of retaining ring; Pushing cylinder is sleeved between center-pole and sleeve, and the bottom of pushing cylinder and center-pole are fixed together by the second shear pin, pushing cylinder, center-pole, forms annular seal space between sleeve and the first land, and center-pole has the hydraulic pressure hole be connected with annular seal space; Be distributed with the lower elastic card claw that can inwardly shrink in the upper end of pushing cylinder, the upper end of elastic card claw is fixed with lower claw boss in each of the lower, and upper clipping claw boss is pressed in upper clipping claw boss mounting groove by lower claw boss.
here is the further optimization and/or improvements to foregoing invention technical scheme:
above-mentioned sleeve comprises upper bush and lower sleeve; Annular groove is had in the lower inside of upper bush, two-way pawl ring is installed with on the top of annular groove, crown tooth is upward distributed with in the inner side of two-way pawl ring, the top of lower sleeve is fixedly mounted on the annular groove bottom of upper bush, the top of upper bush is sleeved on the lower outside of pawl cover, is fixed with the first land in the lower inside of lower sleeve; The bottom of pushing cylinder is sleeved between center-pole and lower sleeve, pushing cylinder, center-pole, forms annular seal space between lower sleeve and the first land.
the above-mentioned lower outside at top fastening station is installed with top connection, and the outside of the center-pole between top connection and pawl cover is provided with from top to bottom successively meets oil chance water self-expansion type packing element and expansion glue tube; The lower outside of center-pole is provided with retaining ring mounting groove, and the inner of retaining ring clamps in retaining ring mounting groove.
the above-mentioned lower outside in the first land is installed with lower contact, is fixed with low fastening station in the lower inside of lower contact, and the upper end of low fastening station is pressed on the lower surface of retaining ring; Draw-in groove is respectively arranged with at the inside middle portion of meeting the inside middle portion and expansion glue tube that water self-expansion type packing element met by oil, the top of draw-in groove is up-narrow and down-wide inclined-plane, the bottom of draw-in groove is inclined-plane wide at the top and narrow at the bottom, is provided with the projection matched with draw-in groove in each draw-in groove.
the top of above-mentioned upper clipping claw boss mounting groove is up-narrow and down-wide inclined-plane, and the bottom of upper clipping claw boss mounting groove is inclined-plane wide at the top and narrow at the bottom.
there are external screw thread or internal thread in the above-mentioned upper end at center-pole, has external screw thread or internal thread in the lower end of center-pole.
above-mentioned top fastening station and top connection are fixedly installed togather by screw thread, two-way pawl ring and upper bush are fixed together by trip bolt, upper bush and lower sleeve are fixedly installed togather by screw thread, and the first land and lower contact are fixedly installed togather by screw thread; Or/and, sealing ring is installed with between projection and center-pole, the sealing ring of at least one is installed with between pushing cylinder and center-pole, between pushing cylinder and lower sleeve, be installed with the sealing ring of at least one, between the first land and center-pole, be installed with the sealing ring of at least one.
reasonable and compact in structure of the present invention, easy to use, by center-pole, pawl cover, sleeve, pushing cylinder, chance oil meet water self-expansion type packing element, expansion glue tube, the first shear pin and the second shear pin with the use of, realize the object of permanent seal pack, have the advantages that seal pack is effective and safe and reliable, improve production efficiency, stop potential safety hazard.
Accompanying drawing explanation
accompanying drawing 1 is that the master of preferred embodiment looks half section structural representation.
accompanying drawing 2 is that the master after the present invention meets oil chance water self-expansion type packing element and expansion glue tube expansion after building the pressure looks half section structural representation.
coding in accompanying drawing is respectively: bar centered by 1, 2 is pawl cover, 3 is pushing cylinder, 4 is top fastening station, 5 is the first shear pin, 6 meet water self-expansion type packing element for meeting oil, 7 is expansion glue tube, 8 is retaining ring, 9 is the first land, 10 is the second shear pin, 11 is annular seal space, 12 is hydraulic pressure hole, 13 is upper bush, 14 is lower sleeve, 15 is two-way pawl ring, 16 is top connection, 17 is lower contact, 18 is low fastening station, 19 is projection, 20 is upper elastic card claw, 21 is upper clipping claw boss, 22 is lower elastic card claw, 23 is lower claw boss, 24 is trip bolt, 25 is sealing ring.
Detailed description of the invention
the present invention by the restriction of following embodiment, can not 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 all be 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. determines 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 1,2, this compound adhesive cartridge comprises center-pole 1, pawl cover 2, sleeve and pushing cylinder 3; Top fastening station 4 is fixed with outside the upper end of center-pole 1, pawl cover 2 is fixedly connected with by the first shear pin 5 outside the middle part of center-pole 1, the upper elastic card claw 20 that can inwardly shrink is distributed with in the lower end of pawl cover 2, the lower end of elastic card claw 20 is fixed with upper clipping claw boss 21 on each, has the upper clipping claw boss mounting groove matched with upper clipping claw boss 21 in the outside of center-pole 1; The outside of the center-pole 1 between top fastening station 4 and pawl cover 2 is set with from top to bottom successively meets oil chance water self-expansion type packing element 6 and expansion glue tube 7, retaining ring 8 is installed with at the lower outside of center-pole 1, the first land 9 is fixed with at the lower end inside of sleeve, the upper end of sleeve is sleeved on the lower outside of pawl cover 2, the first land 9 to be sleeved on center-pole 1 and seat on the upper surface of retaining ring 8; Pushing cylinder 3 is sleeved between center-pole 1 and sleeve, the bottom of pushing cylinder 3 and center-pole 1 are fixed together by the second shear pin 10, pushing cylinder 3, center-pole 1, between sleeve and the first land 9, form annular seal space 11, center-pole 1 has the hydraulic pressure hole 12 be connected with annular seal space 11; Be distributed with the lower elastic card claw 22 that can inwardly shrink in the upper end of pushing cylinder 3, the upper end of elastic card claw 22 is fixed with lower claw boss 23 in each of the lower, and upper clipping claw boss 21 is pressed in upper clipping claw boss mounting groove by lower claw boss 23.Meet oil chance water self-expansion type packing element 6 to expand when running into profit.Meeting water self-expansion type packing element 6 and expansion glue tube 7 by meeting oil, reaching the effect of permanent seal pack, there is safe and reliable feature, improve production efficiency, having stopped potential safety hazard.
according to actual needs, above-mentioned compound adhesive cartridge can be made further optimization and/or improvements:
as shown in accompanying drawing 1,2, sleeve comprises upper bush 13 and lower sleeve 14; Annular groove is had in the lower inside of upper bush 13, two-way pawl ring 15 is installed with on the top of annular groove, crown tooth is upward distributed with in the inner side of two-way pawl ring 15, the top of lower sleeve 14 is fixedly mounted on the annular groove bottom of upper bush 13, the top of upper bush 13 is sleeved on the lower outside of pawl cover 2, is fixed with the first land 9 in the lower inside of lower sleeve 14; The bottom of pushing cylinder 3 is sleeved between center-pole 1 and lower sleeve 14, pushing cylinder 3, center-pole 1, forms annular seal space 11 between lower sleeve 14 and the first land 9.Like this, two-way pawl ring 15 prevents pushing cylinder 3 from gliding building the pressure in expansion process.
as shown in accompanying drawing 1,2, be installed with top connection 16 at the lower outside of top fastening station 4, the outside of the center-pole 1 between top connection 16 and pawl cover 2 is provided with from top to bottom successively meets oil chance water self-expansion type packing element 6 and expansion glue tube 7; The lower outside of center-pole 1 is provided with retaining ring mounting groove, and the inner of retaining ring 8 clamps in retaining ring mounting groove.Like this, retaining ring 8 plays the effect preventing lower sleeve 14 and lower contact about 17 vibration.
as shown in accompanying drawing 1,2, be installed with lower contact 17, be fixed with low fastening station 18 in the lower inside of lower contact 17 at the lower outside of the first land 9, the upper end of low fastening station 18 is pressed on the lower surface of retaining ring 8; Draw-in groove is respectively arranged with at the inside middle portion of meeting the inside middle portion and expansion glue tube 7 that water self-expansion type packing element 6 met by oil, the top of draw-in groove is up-narrow and down-wide inclined-plane, the bottom of draw-in groove is inclined-plane wide at the top and narrow at the bottom, is provided with the projection 19 matched with draw-in groove in each draw-in groove.Projection 19 is convenient to meet oil and is met water self-expansion type packing element 6 and expansion glue tube 7 better expands, and reaches the effect of seal pack.
as shown in accompanying drawing 1,2, the top of upper clipping claw boss mounting groove is up-narrow and down-wide inclined-plane, and the bottom of upper clipping claw boss mounting groove is inclined-plane wide at the top and narrow at the bottom.Like this, be convenient to upper clipping claw boss 21 depart from from upper clipping claw boss mounting groove.
as shown in accompanying drawing 1,2, there are external screw thread or internal thread in the upper end of center-pole 1, have external screw thread or internal thread in the lower end of center-pole 1.Like this, the installation and removal of center-pole 1 are convenient to.
as shown in accompanying drawing 1,2, top fastening station 4 and top connection 16 are fixedly installed togather by screw thread, two-way pawl ring 15 and upper bush 13 are fixed together by trip bolt 24, upper bush 13 and lower sleeve 14 are fixedly installed togather by screw thread, and the first land 9 and lower contact 17 are fixedly installed togather by screw thread; Or/and, sealing ring 25 is installed with between projection 19 and center-pole 1, the sealing ring 25 of at least one is installed with between pushing cylinder 3 and center-pole 1, between pushing cylinder 3 and lower sleeve 14, be installed with the sealing ring 25 of at least one, between the first land 9 and center-pole 1, be installed with the sealing ring 25 of at least one.Like this, installation and removal are convenient to by screw thread; Trip bolt 24 makes two-way pawl ring 15 and upper bush 13 more firmly be installed together; Sealing ring 25 plays better sealing function.
above technical characteristic constitutes most preferred embodiment of the present invention, and it has stronger compliance and best implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
the use procedure of preferred embodiment: during onsite application, with pitching ball seat with the use of, after pitching builds the pressure, liquid enters in annular seal space 11 by hydraulic pressure hole 12, liquid promotes pushing cylinder 3 in annular seal space 11, the second shear pin 10 that pushing cylinder 3 is connected with center-pole 1 is cut off, pushing cylinder 3, lower elastic card claw 22 moves up together with lower claw boss 23, lower claw boss 23 extrudes pawl cover 2, make pawl overlap 2 the first shear pins 5 be connected with center-pole 1 to cut off, pawl cover 2 moves extrusion expansion formula packing element 7 and carries out packing, packing is carried out along with the growth chance oil chance water self-expansion type packing element 6 of time expands after packing.
Claims (10)
1. a compound adhesive cartridge, is characterized in that comprising center-pole, pawl cover, sleeve and pushing cylinder; Top fastening station is fixed with outside the upper end of center-pole, pawl cover is fixedly connected with by the first shear pin outside the middle part of center-pole, the upper elastic card claw that can inwardly shrink is distributed with in the lower end of pawl cover, the lower end of elastic card claw is fixed with upper clipping claw boss on each, has the upper clipping claw boss mounting groove matched with upper clipping claw boss in the outside of center-pole; The outside of the center-pole between top fastening station and pawl cover is set with from top to bottom successively meets oil chance water self-expansion type packing element and expansion glue tube, retaining ring is installed with at the lower outside of center-pole, the first land is fixed with at the lower end inside of sleeve, the upper end of sleeve is sleeved on the lower outside of pawl cover, the first land to be sleeved on center-pole and seat on the upper surface of retaining ring; Pushing cylinder is sleeved between center-pole and sleeve, and the bottom of pushing cylinder and center-pole are fixed together by the second shear pin, pushing cylinder, center-pole, forms annular seal space between sleeve and the first land, and center-pole has the hydraulic pressure hole be connected with annular seal space; Be distributed with the lower elastic card claw that can inwardly shrink in the upper end of pushing cylinder, the upper end of elastic card claw is fixed with lower claw boss in each of the lower, and upper clipping claw boss is pressed in upper clipping claw boss mounting groove by lower claw boss.
2. compound adhesive cartridge according to claim 1, is characterized in that sleeve comprises upper bush and lower sleeve; Annular groove is had in the lower inside of upper bush, two-way pawl ring is installed with on the top of annular groove, crown tooth is upward distributed with in the inner side of two-way pawl ring, the top of lower sleeve is fixedly mounted on the annular groove bottom of upper bush, the top of upper bush is sleeved on the lower outside of pawl cover, is fixed with the first land in the lower inside of lower sleeve; The bottom of pushing cylinder is sleeved between center-pole and lower sleeve, pushing cylinder, center-pole, forms annular seal space between lower sleeve and the first land.
3. compound adhesive cartridge according to claim 1 and 2, it is characterized in that the lower outside of top fastening station is installed with top connection, the outside of the center-pole between top connection and pawl cover is provided with from top to bottom successively meets oil chance water self-expansion type packing element and expansion glue tube; The lower outside of center-pole is provided with retaining ring mounting groove, and the inner of retaining ring clamps in retaining ring mounting groove.
4. compound adhesive cartridge according to claim 1 and 2, is characterized in that the lower outside of the first land is installed with lower contact, is fixed with low fastening station in the lower inside of lower contact, and the upper end of low fastening station is pressed on the lower surface of retaining ring; Draw-in groove is respectively arranged with at the inside middle portion of meeting the inside middle portion and expansion glue tube that water self-expansion type packing element met by oil, the top of draw-in groove is up-narrow and down-wide inclined-plane, the bottom of draw-in groove is inclined-plane wide at the top and narrow at the bottom, is provided with the projection matched with draw-in groove in each draw-in groove.
5. compound adhesive cartridge according to claim 3, is characterized in that the lower outside of the first land is installed with lower contact, is fixed with low fastening station in the lower inside of lower contact, and the upper end of low fastening station is pressed on the lower surface of retaining ring; Draw-in groove is respectively arranged with at the inside middle portion of meeting the inside middle portion and expansion glue tube that water self-expansion type packing element met by oil, the top of draw-in groove is up-narrow and down-wide inclined-plane, the bottom of draw-in groove is inclined-plane wide at the top and narrow at the bottom, is provided with the projection matched with draw-in groove in each draw-in groove.
6. the compound adhesive cartridge according to claim 1 or 2 or 5, is characterized in that the top of upper clipping claw boss mounting groove is up-narrow and down-wide inclined-plane, and the bottom of upper clipping claw boss mounting groove is inclined-plane wide at the top and narrow at the bottom.
7. the compound adhesive cartridge according to claim 3 or 4, is characterized in that the top of upper clipping claw boss mounting groove is up-narrow and down-wide inclined-plane, and the bottom of upper clipping claw boss mounting groove is inclined-plane wide at the top and narrow at the bottom.
8. the compound adhesive cartridge according to claim 1 or 2 or 5, is characterized in that there are external screw thread or internal thread in the upper end of center-pole, has external screw thread or internal thread in the lower end of center-pole.
9. the compound adhesive cartridge according to claim 3 or 4 or 6 or 7, is characterized in that there are external screw thread or internal thread in the upper end of center-pole, has external screw thread or internal thread in the lower end of center-pole.
10. compound adhesive cartridge according to claim 8 or claim 9, it is characterized in that top fastening station and top connection are fixedly installed togather by screw thread, two-way pawl ring and upper bush are fixed together by trip bolt, upper bush and lower sleeve are fixedly installed togather by screw thread, and the first land and lower contact are fixedly installed togather by screw thread; Or/and, sealing ring is installed with between projection and center-pole, the sealing ring of at least one is installed with between pushing cylinder and center-pole, between pushing cylinder and lower sleeve, be installed with the sealing ring of at least one, between the first land and center-pole, be installed with the sealing ring of at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585895.XA CN104373076B (en) | 2014-10-28 | 2014-10-28 | Composite rubber sleeve device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410585895.XA CN104373076B (en) | 2014-10-28 | 2014-10-28 | Composite rubber sleeve device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104373076A true CN104373076A (en) | 2015-02-25 |
| CN104373076B CN104373076B (en) | 2017-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410585895.XA Active CN104373076B (en) | 2014-10-28 | 2014-10-28 | Composite rubber sleeve device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104373076B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587288A (en) * | 2016-03-14 | 2016-05-18 | 中国石油集团西部钻探工程有限公司 | Packer for double-hydraulic-cylinder fracture |
| CN109989724A (en) * | 2018-01-03 | 2019-07-09 | 中石化石油工程技术服务有限公司 | A kind of interior packer of High angle depth surface casing cementing pipe |
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|---|---|---|---|---|
| US20070289735A1 (en) * | 2006-06-16 | 2007-12-20 | Pierre-Yves Corre | Inflatable packer with a reinforced sealing cover |
| CN201650201U (en) * | 2010-05-12 | 2010-11-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Hydraulic packer |
| CN201851068U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Anti-reversing hydraulic packer |
| CN202850933U (en) * | 2012-09-25 | 2013-04-03 | 江苏航天鸿鹏数控机械有限公司 | Oil-water self expansion packer |
| CN203347738U (en) * | 2013-06-04 | 2013-12-18 | 克拉玛依市红都有限责任公司 | Anti-blocking large channel backwashing packer |
| CN204225838U (en) * | 2014-10-28 | 2015-03-25 | 中国石油集团西部钻探工程有限公司 | Compound adhesive cartridge |
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2014
- 2014-10-28 CN CN201410585895.XA patent/CN104373076B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070289735A1 (en) * | 2006-06-16 | 2007-12-20 | Pierre-Yves Corre | Inflatable packer with a reinforced sealing cover |
| CN201650201U (en) * | 2010-05-12 | 2010-11-24 | 中国石油集团西部钻探工程有限公司克拉玛依钻井工艺研究院 | Hydraulic packer |
| CN201851068U (en) * | 2010-11-21 | 2011-06-01 | 中国石油集团西部钻探工程有限公司 | Anti-reversing hydraulic packer |
| CN202850933U (en) * | 2012-09-25 | 2013-04-03 | 江苏航天鸿鹏数控机械有限公司 | Oil-water self expansion packer |
| CN203347738U (en) * | 2013-06-04 | 2013-12-18 | 克拉玛依市红都有限责任公司 | Anti-blocking large channel backwashing packer |
| CN204225838U (en) * | 2014-10-28 | 2015-03-25 | 中国石油集团西部钻探工程有限公司 | Compound adhesive cartridge |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105587288A (en) * | 2016-03-14 | 2016-05-18 | 中国石油集团西部钻探工程有限公司 | Packer for double-hydraulic-cylinder fracture |
| CN105587288B (en) * | 2016-03-14 | 2018-03-06 | 中国石油集团西部钻探工程有限公司 | Biliquid cylinder pressure break packer |
| CN109989724A (en) * | 2018-01-03 | 2019-07-09 | 中石化石油工程技术服务有限公司 | A kind of interior packer of High angle depth surface casing cementing pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104373076B (en) | 2017-04-26 |
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Address after: 834000 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, the Xinjiang Uygur Autonomous Region, China Applicant after: CNPC Xibu Drilling Engineering Company Limited Address before: 834000 West Drilling Engineering Institute, No. 98 Youyi Road, the Xinjiang Uygur Autonomous Region, Karamay Applicant before: CNPC Xibu Drilling Engineering Company Limited |
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Effective date of registration: 20201110 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: 834000 science and technology management division, West drilling and Drilling Engineering Institute, No. 326 South Central Road, Urumqi economic and Technological Development Zone, Xinjiang, China Patentee before: CNPC Xibu Drilling Engineering Co.,Ltd. |
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