CN203948068U - 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
- CN203948068U CN203948068U CN201320735299.6U CN201320735299U CN203948068U CN 203948068 U CN203948068 U CN 203948068U CN 201320735299 U CN201320735299 U CN 201320735299U CN 203948068 U CN203948068 U CN 203948068U
- 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.)
- Expired - Fee Related
Links
- 239000003129 oil well Substances 0.000 title claims abstract description 12
- 230000006835 compression Effects 0.000 title claims abstract description 10
- 238000007906 compression Methods 0.000 title claims abstract description 10
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 125000006850 spacer group Chemical group 0.000 claims abstract description 5
- 238000011010 flushing procedure Methods 0.000 claims description 29
- 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
- 239000010410 layer Substances 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 3
- 230000032798 delamination Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 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
Landscapes
- Fluid-Damping Devices (AREA)
Abstract
The utility model discloses a big pressure differential washable well compression packer of oil well is designed for guaranteeing going on smoothly of oil well separate layer water injection. 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 utility model relates to the large pressure reduction flushing compression packer of a kind of oil well, belongs 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 fluctuation of the interlayer pressure of oil well is larger, and when carrying out multilevel hierarchy water filling operation, conventional packer is subject to 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 purpose of this utility model is to provide a kind of oil well large pressure reduction flushing compression packer, to guarantee carrying out smoothly of oil well delamination water filling.
Concrete technology contents of the present utility model is as follows:
The central tube upper external screw thread of this packer connects the top connection by 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 the well-flushing piston of rubber sealing, by copper core rubber sealing and internal thread connect piston seal pressure cap, external screw thread connect upper cylinder sleeve bottom inwall upper jacket, limit packing element, spacer ring, in packing element, lower jacket adjustable ring that be connected with cover internal thread and that be provided with 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, in cylinder sleeve, be from up to down provided with suit on central tube, by the setting piston of staged, fixed piston and the dummy piston of rubber sealing, 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, the setting piston of staged and the corresponding pressure guide hole that sets of annular space between fixed piston.
This packer can guarantee airtight well-flushing, can bear the impact of larger interlayer pressure difference fluctuation, and sealing is reliable, can avoid the unlatching of the well-flushing passage that causes due to interlayer pressure difference fluctuation, guarantees that the sealing of packer was not lost efficacy, and improves the reliability of packer well-washing operation.
Accompanying drawing explanation
Fig. 1 is the large pressure reduction flushing compression packer of oil well superstructure schematic diagram.
Fig. 2 is the large pressure reduction flushing compression packer of oil well substructure schematic diagram.
The specific embodiment
Embodiment:
With reference to Fig. 1 and 2, embodiment of the present utility model is 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 threads connect 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, pilot overlap 5 belows be followed successively by spring 7 on suit bushing pipe 8, by the well-flushing piston 9 of O type rubber sealing, by 13 sealings of copper core cushion rubber and internal thread connect piston seal pressure caps 12, external screw thread connect upper cylinder sleeve 2 bottom inwalls upper jacket 15, limit packing element 16, spacer ring 18, in packing element 17, lower jacket 19 and overlap internal thread adjustable ring 20 that be connected and that be provided with well-flushing lower channel 21; Lower contact 35 outer walls connect lower cylinder sleeve 30 by setting pin 34, lower cylinder sleeve 30 inwalls are provided with gingival cyst of mucous gland in the newborn, in cylinder sleeve, be from up to down provided with suit on central tube 29, by the setting piston 22 of staged, fixed piston 25 and the dummy piston 32 of rubber sealing, the setting piston 22 of the staged lower cylinder sleeve 30 top inwalls that are threaded, fixed piston 25 is provided with lock ring 26 and conciliates offsets nail 27 fixing with central tube 29 by baffle ring 28, the corresponding pressure guide hole 24 that sets of annular space of the setting piston 22 of staged and 25 of fixed pistons.
The course of work of this packer is as follows:
Set process: this packer is Waterpower hydraulic pressure boosting compression packer, while setting, fluid in central tube 29 is by the annular space that sets pressure guide hole 24 and enter 25 of the setting piston 22 of staged and fixed pistons, the lower cylinder sleeve 30 of the setting piston 22 of boosting staged and drive moves upward, extruding packing element sets, and cuts off setting pin 34 simultaneously.While having set, lock ring 26 by gingival cyst of mucous gland in the newborn interlock, after central tube 29 releases, is limited by gingival cyst of mucous gland in the newborn with lower cylinder sleeve 30, and packing element continues to bear lower cylinder sleeve 30 can not release of pressure with the extruding of the setting piston 22 of staged, makes no longer resilience of packing element, keeps setting.
Deblocking process: the deblocking mode of this packer is mechanical deblocking, 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 moves with seal pressure cap 12 disjunctors, the gap and the well-flushing lower channel 21 that are communicated with well-flushing upper channel 11, bushing pipe 8 and 29 of central tubes, formation well-flushing passage; When well-flushing finishes, spring 7 promotes well-flushing piston 9 and seal pressure cap 12, makes pressure cap move to upper jacket 15 upper surfaces, closes well-flushing upper channel 11.
Claims (1)
1. the large pressure reduction flushing compression packer of oil well, is characterized in that:
The central tube of this packer (29) upper external screw thread connects the top connection (1) by 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), well-flushing piston (9) by rubber sealing, by seal pressure cap (12) copper core cushion rubber (13) sealing and internal thread connection 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), lower jacket (19) and cover internal thread adjustable ring that be connected and that be provided with well-flushing lower channel (21) (20), 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, in cylinder sleeve, be from up to down provided with on suit central tube (29), the setting piston of staged (22) by rubber sealing, fixed piston (25) and dummy piston (32), the setting piston of staged (22) lower cylinder sleeve (30) the top inwall that is threaded, fixed piston (25) is provided with lock ring (26) and conciliates offset nail (27) fixing by baffle ring (28) and central tube (29), the setting piston of staged (22) and the corresponding pressure guide hole (24) that sets of annular space between fixed piston (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320735299.6U CN203948068U (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 |
|---|---|---|---|
| CN201320735299.6U CN203948068U (en) | 2013-11-19 | 2013-11-19 | Compression packer for oil well large pressure difference washable well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203948068U true CN203948068U (en) | 2014-11-19 |
Family
ID=51890111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320735299.6U Expired - Fee Related CN203948068U (en) | 2013-11-19 | 2013-11-19 | Compression packer for oil well large pressure difference washable well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203948068U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN105840132A (en) * | 2015-01-12 | 2016-08-10 | 中国石油天然气股份有限公司 | Water injection packer |
| CN109113638A (en) * | 2018-09-18 | 2019-01-01 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of back-washable inflatable packer |
| CN114718500A (en) * | 2021-01-04 | 2022-07-08 | 中国石油天然气股份有限公司 | Packer (CN) |
-
2013
- 2013-11-19 CN CN201320735299.6U patent/CN203948068U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN105840132A (en) * | 2015-01-12 | 2016-08-10 | 中国石油天然气股份有限公司 | Water injection packer |
| CN109113638A (en) * | 2018-09-18 | 2019-01-01 | 宝鸡瑞林石油机电设备有限责任公司 | A kind of back-washable inflatable packer |
| CN114718500A (en) * | 2021-01-04 | 2022-07-08 | 中国石油天然气股份有限公司 | Packer (CN) |
| CN114718500B (en) * | 2021-01-04 | 2023-12-22 | 中国石油天然气股份有限公司 | Packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141119 Termination date: 20211119 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |