CN104653144A - Compression packer for oil well large pressure difference washable well - Google Patents
Compression packer for oil well large pressure difference washable well Download PDFInfo
- Publication number
- CN104653144A CN104653144A CN201310585484.6A CN201310585484A CN104653144A CN 104653144 A CN104653144 A CN 104653144A CN 201310585484 A CN201310585484 A CN 201310585484A CN 104653144 A CN104653144 A CN 104653144A
- Authority
- CN
- China
- Prior art keywords
- piston
- well
- cylinder sleeve
- packer
- flushing
- 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.)
- Pending
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 11
- 230000006835 compression Effects 0.000 title claims abstract description 9
- 238000007906 compression Methods 0.000 title claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims description 28
- 238000012856 packing Methods 0.000 claims description 11
- 206010055018 Gingival cyst Diseases 0.000 claims description 5
- 210000004907 gland Anatomy 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011229 interlayer Substances 0.000 abstract description 6
- 238000005406 washing Methods 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 3
- 239000007924 injection Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
- E21B33/126—Packers; Plugs with fluid-pressure-operated elastic cup or skirt
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
Abstract
The invention discloses a large-pressure-difference washable well compression packer for an oil well, which is designed for ensuring the smooth operation of layered water injection of the oil well. The two ends of the central tube of the packer are respectively connected with an upper joint, a lower joint, an upper cylinder sleeve and a lower cylinder sleeve, a pressure guide channel and a setting pressure guide hole are arranged on the central tube, a spring, a well washing piston, a sealing pressure cap, an upper sheath, an edge rubber tube, a spacer ring, a middle rubber tube, a lower sheath and an adjusting ring are sleeved on a liner tube outside the central tube, and a stepped setting piston, a fixed piston and a balance piston are arranged in the lower cylinder sleeve. The packer can guarantee closed well washing, can bear the influence of large interlayer pressure difference fluctuation, is reliable in sealing, can avoid opening of a well washing channel caused by the interlayer pressure difference fluctuation, guarantees that the sealing of the packer does not lose efficacy, and improves the reliability of the well washing operation of the packer.
Description
Technical field
The present invention relates to the large pressure reduction flushing compression packer of a kind of oil well, belong to separated-zone water infection oil field technical field.
Background technology
At present, the conventional Y341 packer that domestic oil well delamination water filling adopts can meet the technical requirements of seperated layer water injection substantially.Along with going deep into of oil field development, the interlayer pressure fluctuation of oil well is comparatively large, and when carrying out multilevel hierarchy water injection work, conventional packer is by interlayer pressure difference effect, and well-flushing passage is opened, and upper and lower two-layer communication water filling, has a strong impact on dispensing effect.
Summary of the invention
The object of the present invention is to provide the large pressure reduction flushing compression packer of a kind of oil well, to ensure carrying out smoothly of oil well delamination water filling.
Concrete technology contents of the present invention is as follows:
The central tube upper external screw thread of this packer connects by the top connection of rubber sealing, and lower end external screw thread connects the lower contact by rubber sealing, and pipe side wall upper part has pilot passage, and bottom has and sets pressure guide hole, pipe outer wall top suit bushing pipe; Top connection external screw thread is connected with the upper cylinder sleeve of well-flushing upper channel, pilot external threading is connected between bushing pipe and upper cylinder sleeve, pilot cover below be followed successively by spring on suit bushing pipe, by rubber sealing well-flushing piston, by copper core rubber sealing and the upper jacket that internal thread connects the seal pressure cap of piston, external screw thread connects upper cylinder sleeve bottom inwall, limit packing element, spacer ring, middle packing element, lower jacket be connected with cover internal thread and be provided with the adjustable ring of well-flushing lower channel; Lower contact outer wall connects lower cylinder sleeve by setting pin, lower inboard wall of cylinder liner is provided with gingival cyst of mucous gland in the newborn, from up to down be provided with in cylinder sleeve suit central tube on, by the setting piston of the staged of rubber sealing, fixed piston and dummy piston, the setting piston thread of staged connects lower cylinder sleeve top inwall, fixed piston is provided with lock ring and conciliates offset nail and fixed by baffle ring and central tube, and the setting piston of staged is corresponding with the annular space between fixed piston sets pressure guide hole.
This packer can ensure airtight well-flushing, can bear the impact of larger interlayer pressure difference fluctuation, and sealing is reliable, can avoid fluctuate the unlatching of the well-flushing passage caused due to interlayer pressure difference, ensures that the sealing of packer was not lost efficacy, the reliability of raising packer well-washing operation.
Accompanying drawing explanation
Fig. 1 is oil well large pressure reduction flushing compression packer structural representation.
Detailed description of the invention
Embodiment:
With reference to Fig. 1, embodiments of the invention are further illustrated:
This packer mainly comprises top connection 1, upper cylinder sleeve 2, pilot passage 4, pilot cover 5, spring 7, bushing pipe 8, well-flushing piston 9, well-flushing upper channel 11, seal pressure cap 12, steel core cushion rubber 13, upper jacket 15, limit packing element 16, middle packing element 17, spacer ring 18, lower jacket 19, adjustable ring 20, well-flushing lower channel 21, setting piston 22, setting pressure guide hole 24, fixed piston 25, lock ring 26, deblocking pin 27, baffle ring 28, central tube 29, lower cylinder sleeve 30, dummy piston 32, setting pin 34 and lower contact 35,
Central tube 29 upper external screw thread connects the top connection 1 by O type rubber sealing, and lower end external screw thread connects the lower contact 35 by O type rubber sealing, and pipe side wall upper part has pilot passage 4, and bottom has and sets pressure guide hole 24, pipe outer wall top suit bushing pipe 8; Top connection 1 external screw thread is connected with the upper cylinder sleeve 2 of well-flushing upper channel 11, pilot cover 5 is threaded between bushing pipe 8 and upper cylinder sleeve 2, be followed successively by below pilot cover 5 spring 7 on suit bushing pipe 8, by O type rubber sealing well-flushing piston 9, by copper core cushion rubber 13 seal and the upper jacket 15 that internal thread connects the seal pressure cap 12 of piston, external screw thread connects upper cylinder sleeve 2 bottom inwall, limit packing element 16, spacer ring 18, middle packing element 17, lower jacket 19 be connected with cover internal thread and be provided with the adjustable ring 20 of well-flushing lower channel 21; Lower contact 35 outer wall connects lower cylinder sleeve 30 by setting pin 34, lower cylinder sleeve 30 inwall is provided with gingival cyst of mucous gland in the newborn, from up to down be provided with in cylinder sleeve suit central tube 29 on, by the setting piston 22 of the staged of rubber sealing, fixed piston 25 and dummy piston 32, the setting piston of staged 22 is threaded lower cylinder sleeve 30 top inwall, fixed piston 25 is provided with lock ring 26 and conciliates offset nail 27 and fixed by baffle ring 28 and central tube 29, and the setting piston of staged 22 is corresponding with the annular space between fixed piston 25 sets pressure guide hole 24.
The course of work of this packer is as follows:
Set process: this packer is Waterpower hydraulic pressure boosting compression packer, when setting, fluid in central tube 29 enters annular space between the setting piston 22 of staged and fixed piston 25 by setting pressure guide hole 24, the setting piston 22 of boosting staged and drive lower cylinder sleeve 30 to move upward, extruding packing element sets, and cuts off setting pin 34 simultaneously.When having set, lock ring 26 is engaged by gingival cyst of mucous gland in the newborn with lower cylinder sleeve 30, after central tube 29 release, limits by gingival cyst of mucous gland in the newborn, and packing element continues to bear lower cylinder sleeve 30 and the extruding of the setting piston 22 of staged and can not release of pressure, makes packing element no longer resilience, keeps setting.
Deblocking process: the deblocking mode of this packer is mechanical deblocking, namely by upper lifting pipe post, cut off deblocking pin 27 and realize deblocking.
Washing well process: during well-flushing, when casing pressure is greater than the preset pressure of spring 7, piston compression spring, well-flushing piston 9 and seal pressure cap 12 disjunctor move, be communicated with well-flushing upper channel 11, gap between bushing pipe 8 and central tube 29 and well-flushing lower channel 21, form well-flushing passage; At the end of well-flushing, spring 7 promotes well-flushing piston 9 and seal pressure cap 12, makes pressure cap move to upper jacket 15 upper surface, closes well-flushing upper channel 11.
Claims (1)
1. the large pressure reduction flushing compression packer of oil well, is characterized in that:
Central tube (29) upper external screw thread of this packer connects by the top connection (1) of rubber sealing, lower end external screw thread connects the lower contact (35) by rubber sealing, pipe side wall upper part has pilot passage (4), bottom has and sets pressure guide hole (24), pipe outer wall top suit bushing pipe (8), top connection (1) external screw thread is connected with the upper cylinder sleeve (2) of well-flushing upper channel (11), pilot cover (5) is threaded between bushing pipe (8) and upper cylinder sleeve (2), pilot cover (5) below is followed successively by the spring (7) on suit bushing pipe (8), by the well-flushing piston (9) of rubber sealing, by copper core cushion rubber (13) seal and internal thread connects the seal pressure cap (12) of piston, external screw thread connects the upper jacket (15) of upper cylinder sleeve (2) bottom inwall, limit packing element (16), spacer ring (18), middle packing element (17), that lower jacket (19) is connected with cover internal thread and be provided with the adjustable ring (20) of well-flushing lower channel (21), lower contact (35) outer wall connects lower cylinder sleeve (30) by setting pin (34), lower cylinder sleeve (30) inwall is provided with gingival cyst of mucous gland in the newborn, from up to down be provided with on suit central tube (29) in cylinder sleeve, by the setting piston of the staged of rubber sealing (22), fixed piston (25) and dummy piston (32), the setting piston of staged (22) is threaded lower cylinder sleeve (30) top inwall, fixed piston (25) is provided with lock ring (26) and conciliates offset nail (27) and fixed by baffle ring (28) and central tube (29), annular space between the setting piston of staged (22) with fixed piston (25) is corresponding sets pressure guide hole (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585484.6A CN104653144A (en) | 2013-11-19 | 2013-11-19 | Compression packer for oil well large pressure difference washable well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310585484.6A CN104653144A (en) | 2013-11-19 | 2013-11-19 | Compression packer for oil well large pressure difference washable well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104653144A true CN104653144A (en) | 2015-05-27 |
Family
ID=53244716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310585484.6A Pending CN104653144A (en) | 2013-11-19 | 2013-11-19 | Compression packer for oil well large pressure difference washable well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104653144A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781477A (en) * | 2016-03-11 | 2016-07-20 | 新疆华隆油田科技股份有限公司 | Compression type bi-directional bearing controllable well washing packer |
| CN107120089A (en) * | 2017-04-28 | 2017-09-01 | 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 extruding cup packer of self-balancing |
| CN110454114A (en) * | 2019-07-24 | 2019-11-15 | 中国石油天然气股份有限公司 | Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well |
| CN111075385A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Single-pipe double-control safe well-flushing packer |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486733Y (en) * | 2001-05-12 | 2002-04-17 | 大庆油田有限责任公司 | Pressure differential hydraulic compressive washable well packet |
| EP1475514A1 (en) * | 2003-04-16 | 2004-11-10 | Halliburton Energy Services, Inc. | Testing drill packer |
| CN201786295U (en) * | 2010-07-30 | 2011-04-06 | 辽宁江城石油技术服务有限公司 | Pressure regulating well washing machine |
| CN201963249U (en) * | 2011-03-04 | 2011-09-07 | 赵杰 | Water injection packer capable of being used for washing well |
| CN202348212U (en) * | 2011-12-19 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Annular hydraulic compression type packer |
| CN202810775U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Large-pressure-difference well-washing packer |
| CN202810776U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | High pressure expanding type well-flushing packer |
| CN203948068U (en) * | 2013-11-19 | 2014-11-19 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
-
2013
- 2013-11-19 CN CN201310585484.6A patent/CN104653144A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2486733Y (en) * | 2001-05-12 | 2002-04-17 | 大庆油田有限责任公司 | Pressure differential hydraulic compressive washable well packet |
| EP1475514A1 (en) * | 2003-04-16 | 2004-11-10 | Halliburton Energy Services, Inc. | Testing drill packer |
| CN201786295U (en) * | 2010-07-30 | 2011-04-06 | 辽宁江城石油技术服务有限公司 | Pressure regulating well washing machine |
| CN201963249U (en) * | 2011-03-04 | 2011-09-07 | 赵杰 | Water injection packer capable of being used for washing well |
| CN202348212U (en) * | 2011-12-19 | 2012-07-25 | 中国石油集团渤海钻探工程有限公司 | Annular hydraulic compression type packer |
| CN202810775U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | Large-pressure-difference well-washing packer |
| CN202810776U (en) * | 2012-10-28 | 2013-03-20 | 大庆泰泽机械加工有限公司 | High pressure expanding type well-flushing packer |
| CN203948068U (en) * | 2013-11-19 | 2014-11-19 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
Non-Patent Citations (3)
| Title |
|---|
| 代旭升编: "《采油工实际操作读本》", 31 December 2012, 中国石油大学出版社 * |
| 杨晓翔等: "杨晓翔等", 《通用机械》 * |
| 王玉普等编: "《大庆油田高含水期注采工艺技术》", 30 September 2001, 石油工业出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781477A (en) * | 2016-03-11 | 2016-07-20 | 新疆华隆油田科技股份有限公司 | Compression type bi-directional bearing controllable well washing packer |
| CN105781477B (en) * | 2016-03-11 | 2019-04-26 | 新疆华隆油田科技股份有限公司 | The controllable flushing packer of compression bidirectional bearing |
| CN107120089A (en) * | 2017-04-28 | 2017-09-01 | 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 extruding cup packer of self-balancing |
| CN107120089B (en) * | 2017-04-28 | 2019-06-04 | 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 extruding cup packer of self-balancing |
| CN111075385A (en) * | 2018-10-22 | 2020-04-28 | 中国石油化工股份有限公司 | Single-pipe double-control safe well-flushing packer |
| CN111075385B (en) * | 2018-10-22 | 2022-01-25 | 中国石油化工股份有限公司 | Single-pipe double-control safe well-flushing packer |
| CN110454114A (en) * | 2019-07-24 | 2019-11-15 | 中国石油天然气股份有限公司 | Packer for quickly stabilizing water content of wellhead produced liquid of low-oil-production oil well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150527 |