CN204040993U - A kind of backwashing wells steel frame expanding water injecting packer - Google Patents
A kind of backwashing wells steel frame expanding water injecting packer Download PDFInfo
- Publication number
- CN204040993U CN204040993U CN201420389606.4U CN201420389606U CN204040993U CN 204040993 U CN204040993 U CN 204040993U CN 201420389606 U CN201420389606 U CN 201420389606U CN 204040993 U CN204040993 U CN 204040993U
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- China
- Prior art keywords
- backwash
- central tube
- backwashing
- piston
- expanding
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- 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 - Lifetime
Links
- 238000011001 backwashing Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 34
- 239000010959 steel Substances 0.000 title claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 238000012856 packing Methods 0.000 claims abstract description 25
- 230000007704 transition Effects 0.000 claims description 10
- 238000005987 sulfurization reaction Methods 0.000 claims description 6
- 239000010985 leather Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 abstract description 9
- 239000007924 injection Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004873 anchoring Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 8
- 239000004576 sand Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Landscapes
- Filtration Of Liquid (AREA)
Abstract
The utility model discloses a kind of backwashing wells steel frame expanding water injecting packer, it comprises top connection, inner central tube, exterior central tube, backwashing mechanism, expanding packer body, unidirectional runner mechanism, setting mechanism, the lower end of top connection is connected with the upper end of inner central tube, exterior central tube is sleeved on inner central tube, between exterior central tube with inner central tube, be provided with backwash passage be communicated with backwashing mechanism, expanding packer body is installed on exterior central tube, unidirectional runner mechanism and setting mechanism are installed in the below of expanding packer body successively, it is characterized in that described backwashing mechanism is installed between top connection and expanding packer body, described backwashing mechanism is connected with top connection by deblocking pin.The utility model has stronger packing and anchoring properties, can provide enough anchorage forces and stronger packing effect for individual layer water injection well and multilayer water injection well.
Description
Technical field
The utility model relates to a kind of backwashing wells steel frame expanding water injecting packer.
Background technology
Along with deepening continuously of waterflooding extraction, require that water filling starting pressure is more and more higher, interlayer pressure difference is increasing, therefore also more and more higher to the performance requirement of packer, conventional well adopts and carries out Inter-zonal packing and anchoring string like this along with the passing of water injection time with hydraulic anchor or the water injection packer of band slips class, due to downhole tool fouling, the reason such as corrosion and blocking, cause during well workover, tripping out packer very difficult, even overhaul, and existing backwashing mechanism design is in the below of packing element, backwash piston there is one section of sand setting pocket, easy sand setting, backwashing mechanism is not closed completely or action inefficacy.
Utility model content
Technical problem to be solved in the utility model be for the technical problem existed in above-mentioned prior art provide a kind of can ensure water injection string long-time stable carry out work, simultaneously can provide the backwashing wells steel frame expanding water injecting packer of reliable backwash passage and stronger anchorage force and packing effect for water injection string.
The technical scheme that the utility model adopts is: a kind of backwashing wells steel frame expanding water injecting packer, it comprises top connection, inner central tube, exterior central tube, backwashing mechanism, expanding packer body, unidirectional runner mechanism, setting mechanism, the lower end of top connection is connected with the upper end of inner central tube, exterior central tube is sleeved on inner central tube, between exterior central tube with inner central tube, be provided with backwash passage be communicated with backwashing mechanism, expanding packer body is installed on exterior central tube, unidirectional runner mechanism and setting mechanism are installed in the below of expanding packer body successively, it is characterized in that described backwashing mechanism is installed between top connection and expanding packer body, described backwashing mechanism is connected with top connection by deblocking pin.
By technique scheme, described backwashing mechanism comprises backwash cover, backwash spring, backwash piston, the upper end of described backwash cover is connected with top connection by deblocking pin, lower end is connected with expanding packer body by transition joint, backwash cover is provided with backwash feeder connection contact with the outer wall of backwash piston, backwash spring, backwash piston are successively set between top connection and transition joint from top to down, and the inwall of described backwash piston communicates with backwash passage.
By technique scheme, the upper end inner and outer wall of backwash piston respectively with inner central tube and backwash piston seal arrangement, the lower end outer wall of backwash piston and transition joint seal arrangement.
By technique scheme, described backwash channel outlet is arranged in unidirectional runner mechanism.
By technique scheme, described unidirectional runner mechanism comprises valve body, is disposed with from top to down and sets spring, sets spring base, steel ball, steel ball seat, leather cup assembly, valve rod in valve body, the lower end of valve body and valve seat and valve gap phase configuration.
By technique scheme, valve body is provided with passageway bridge.
By technique scheme, described expanding packer body comprises steel band, and described steel band periphery sulfuration has outer packing element, and inwall sulfuration has interior packing element.
By technique scheme, described setting mechanism comprises and sets overcoat, sets piston, sets piston by starting pin and setting overcoat and be connected, inner central tube is provided with inlet opening and is connected with the inwall setting piston.
By technique scheme, the lower end of setting mechanism is provided with anticollision ring.
Beneficial effect acquired by the utility model is: 1, the utility model has stronger packing and anchoring properties, can provide enough anchorage forces and stronger packing effect for individual layer water injection well and multilayer water injection well; 2, the action part in backwashing mechanism is arranged on the top of packing element, effectively can avoids sand setting, sand card; Adopt backwash spring to promote backwash piston, for backwash passage provides closedown power, ensure that backwash piston can be closed tight; 3, by arranging unidirectional runner mechanism, effectively can guarantee under the bursty state such as packer termination of pumping, power failure, being still in effective sealing state, structure is simple, reliable operation.4, the utility model stable performance, after setting, packer is in sealing state, and oil pipe and oil jacket annular space as water stream channel, can be combined with eccentric injection mandrel, effectively can solve multilayer water filling problem.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein: 1, top connection, 2, O type circle, 3, deblocking pin, 4, backwash spring, 5, backwash cover, 6, inner central tube, 7, backwash piston, 8, transition joint, 9, plug, 10, exterior central tube, 11, outer packing element, 12, steel band, 13, interior packing element, 14, valve body, 15, set spring, 16, spring base is set, 17, steel ball, 18, steel ball seat, 19, packing ring, 20, leather cup assembly, 21, valve rod, 22, valve seat, 23, valve gap, 24, set overcoat, 25, set piston, 26, pin is started, 27, anticollision ring.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of backwashing wells steel frame expanding water injecting packer, it comprises top connection 1, inner central tube 6, exterior central tube 10, backwashing mechanism, expanding packer body, unidirectional runner mechanism, setting mechanism, the lower end of top connection 1 is connected with the upper end of inner central tube 6, and sealed by O type circle 2, exterior central tube 10 is sleeved on inner central tube 6, between exterior central tube 10 with inner central tube 6, be provided with backwash passage be communicated with backwashing mechanism, expanding packer body is installed on exterior central tube 10, unidirectional runner mechanism and setting mechanism are installed in the below of expanding packer body successively, described backwashing mechanism is installed between top connection 1 and expanding packer body, described backwashing mechanism is connected with top connection 1 by deblocking pin 3.。
Described backwashing mechanism comprises backwash cover 5, backwash spring 4, backwash piston 7, the upper end of described backwash cover 5 is connected with top connection 1 by deblocking pin 3, lower end is connected with expanding packer body by transition joint 8, backwash cover 5 is provided with backwash feeder connection contact with the outer wall of backwash piston 7, backwash spring 4, backwash piston 7 is successively set between top connection 1 and transition joint 8 from top to down, the upper end inner and outer wall of backwash piston 7 respectively with inner central tube and backwash piston seal arrangement, the lower end outer wall of backwash piston 7 and transition joint 8 seal arrangement, the lower end inner wall of described backwash piston 7 communicates with backwash passage.
Described expanding packer body comprises steel band 12, and described steel band 12 periphery sulfuration has outer packing element 11, and inwall sulfuration has interior packing element 13, is provided with annular chamber between interior packing element 13 and exterior central tube 10.When runner unlatching has high-pressure fluid to flow into, interior packing element 13 and outer packing element 11 bulging together with steel band 12, play the effect of sealing and grappling.
Described unidirectional runner mechanism comprises valve body 14, be disposed with from top to down in valve body 14 and set spring 15, set spring base 16, steel ball 17, steel ball seat 18, leather cup assembly 20, valve rod 21, steel ball seat 18 is fixed on valve rod 21 by screw thread, packing ring 19 and leather cup assembly 20 are fixed on valve rod by steel ball seat 18 simultaneously, the lower end of valve body 21 and valve seat 22 and valve gap 23 phase configuration.Wherein, valve body 14 is provided with passageway bridge.This passageway bridge is divided into radial passage and axial passage, radial passage and backwash channel connection, axial passage be provided with annular chamber between interior packing element 13 with outer center-pole 10 and be connected.
Described setting mechanism comprises and sets overcoat 24, sets piston 25, the upper end setting overcoat 24 is connected with valve body 14, lower end is connected with there being anticollision ring 27, set piston 25 by starting pin 26 and setting overcoat 24 and be connected, inner central tube is provided with inlet opening and is connected with the inwall setting piston 25.
When needing to set, pressurization in oil pipe, it is descending that pressure promotes to set piston 25, cut off and start pin 26, inlet is opened, and sets spring 15 and compresses, runner is opened, liquid enters the annular space between interior packing element 13 and exterior central tube 10 by unidirectional runner mechanism, makes packer setting, plays the effect of grappling and packing.When needing backwash, oil jacket applied pressure by annulus, after pressure reaches certain value, backwash piston 7 extrudes backwash spring 4, and backwash feeder connection is opened, and backwash liquor flows into from backwash passage, carries out backwash; After well head release, backwash spring 4 recovers former length, utilizes its screen resilience, promotes backwash piston 7 descending, closes backwash passage, it efficiently avoids blocking channel, ensures backwash channels open.When needing to take out tubing string, upper lifting pipe post, makes deblocking pin 3 cut off, the pressure release of packing element internal pressure, and removing seal for packer, just can take out tubing string.
Claims (9)
1. a backwashing wells steel frame expanding water injecting packer, it comprises top connection, inner central tube, exterior central tube, backwashing mechanism, expanding packer body, unidirectional runner mechanism, setting mechanism, the lower end of top connection is connected with the upper end of inner central tube, exterior central tube is sleeved on inner central tube, between exterior central tube with inner central tube, be provided with backwash passage be communicated with backwashing mechanism, expanding packer body is installed on exterior central tube, unidirectional runner mechanism and setting mechanism are installed in the below of expanding packer body successively, it is characterized in that described backwashing mechanism is installed between top connection and expanding packer body, described backwashing mechanism is connected with top connection by deblocking pin.
2. a kind of backwashing wells steel frame expanding water injecting packer according to claim 1, it is characterized in that described backwashing mechanism comprises backwash cover, backwash spring, backwash piston, the upper end of described backwash cover is connected with top connection by deblocking pin, lower end is connected with expanding packer body by transition joint, backwash cover is provided with backwash feeder connection contact with the outer wall of backwash piston, backwash spring, backwash piston are successively set between top connection and transition joint from top to down, and the inwall of described backwash piston communicates with backwash passage.
3. a kind of backwashing wells steel frame expanding water injecting packer according to claim 2, the upper end inner and outer wall that it is characterized in that backwash piston respectively with inner central tube and backwash piston seal arrangement, the lower end outer wall of backwash piston and transition joint seal arrangement.
4. a kind of backwashing wells steel frame expanding water injecting packer according to claim 1 and 2, is characterized in that described backwash channel outlet arranges unidirectional runner mechanism.
5. a kind of backwashing wells steel frame expanding water injecting packer according to claim 4, it is characterized in that described unidirectional runner mechanism comprises valve body, be disposed with from top to down in valve body and set spring, set spring base, steel ball, steel ball seat, leather cup assembly, valve rod, the lower end of valve body and valve seat and valve gap phase configuration.
6. a kind of backwashing wells steel frame expanding water injecting packer according to claim 5, is characterized in that being provided with passageway bridge on valve body.
7. a kind of backwashing wells steel frame expanding water injecting packer according to claim 1 and 2, it is characterized in that described expanding packer body comprises steel band, described steel band periphery sulfuration has outer packing element, and inwall sulfuration has interior packing element.
8. a kind of backwashing wells steel frame expanding water injecting packer according to claim 1 and 2, it is characterized in that described setting mechanism comprises to set overcoat, set piston, set piston by starting pin and setting overcoat and be connected, inner central tube is provided with inlet opening and is connected with the inwall setting piston.
9. a kind of backwashing wells steel frame expanding water injecting packer according to claim 1 and 2, is characterized in that the lower end of setting mechanism is provided with anticollision ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389606.4U CN204040993U (en) | 2014-07-15 | 2014-07-15 | A kind of backwashing wells steel frame expanding water injecting packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420389606.4U CN204040993U (en) | 2014-07-15 | 2014-07-15 | A kind of backwashing wells steel frame expanding water injecting packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204040993U true CN204040993U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420389606.4U Expired - Lifetime CN204040993U (en) | 2014-07-15 | 2014-07-15 | A kind of backwashing wells steel frame expanding water injecting packer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321010A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Integrated 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 |
| CN110552654A (en) * | 2018-06-01 | 2019-12-10 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup packer |
-
2014
- 2014-07-15 CN CN201420389606.4U patent/CN204040993U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106321010A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Integrated packer |
| CN106321010B (en) * | 2016-10-09 | 2021-04-13 | 中国石油化工股份有限公司 | Integrated packer |
| CN110552654A (en) * | 2018-06-01 | 2019-12-10 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup packer |
| CN110552654B (en) * | 2018-06-01 | 2021-07-27 | 中国石油化工股份有限公司 | Hydraulic control deblocking type leather cup 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Address before: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: OIL PRODUCTION TECHNOLOGY Research Institute OF JIANGHAN OILFIELD COMPANY SINOPEC |
|
| CP01 | Change in the name or title of a patent holder | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191230 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 430035 Hubei city in Wuhan province two Qiaokou Gutian Road No. 37 HSBC Nanniwan Avenue headquarters block fifth B Patentee before: PETROLEUM ENGINEERING TECHNOLOGY Research Institute OF HANJIANG OIL FIELD BRANCH SINOPEC |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141224 |
|
| CX01 | Expiry of patent term |