CN109252834B - Concentric double-channel long-acting layered water injection device and method - Google Patents
Concentric double-channel long-acting layered water injection device and method Download PDFInfo
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- CN109252834B CN109252834B CN201710572778.3A CN201710572778A CN109252834B CN 109252834 B CN109252834 B CN 109252834B CN 201710572778 A CN201710572778 A CN 201710572778A CN 109252834 B CN109252834 B CN 109252834B
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- packer
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000002347 injection Methods 0.000 title claims abstract description 48
- 239000007924 injection Substances 0.000 title claims abstract description 48
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims description 18
- 230000006835 compression Effects 0.000 claims description 17
- 238000007906 compression Methods 0.000 claims description 17
- 230000000903 blocking effect Effects 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 210000002445 nipple Anatomy 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000004576 sand Substances 0.000 abstract description 6
- 230000007774 longterm Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000003825 pressing Methods 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/20—Displacing by water
-
- 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
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/14—Obtaining from a multiple-zone well
Landscapes
- 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)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a concentric double-channel long-acting layered water injection device and a method, wherein the device comprises an unsealing controller, a first bridge type self-locking expansion packer, a first bridge type anti-backflow water distributor, a second bridge type self-locking expansion packer and a second bridge type anti-backflow water distributor which are sequentially connected from top to bottom, wherein the first bridge type anti-backflow water distributor is positioned in a first water injection layer, and the second bridge type anti-backflow water distributor is positioned in a second water injection layer. And the bottom end of the second bridge type anti-return water distributor is connected with a well flushing valve. When the injection is stopped, the packer is not unsealed, the pressure difference between layers does not cause the unsealing of the packer, and the unsealing is carried out by using a back flushing well or a forward rotation tubular column. The invention solves the problem of sand burying pipe column caused by stratum return in the loose sandstone oil reservoir stop injection process, and has important significance for prolonging the pipe column validity period and meeting the long-term injection allocation and later-period replacement safety.
Description
Technical Field
The invention relates to a water injection layered injection technology of an oil field, in particular to a concentric double-channel long-acting layered water injection device and a concentric double-channel long-acting layered water injection method.
Background
The reservoir layer of the high-permeability well in the shallow layer is cemented and loose, a high-pressure area is formed in a near well zone in the water injection process, and when the water injection is stopped, the stratum sand is easily produced, so that stratum sand is accumulated in a shaft and a tubular column, the water injection well is caused to be underinjected, the test and adjustment are failed, and even the overhaul operation is caused. The oil reservoir type adopts an expanding packer split injection process, wherein the process adopts an expanding packer for layering, and a water distributor and a well flushing valve adopt a single-flow design. The expansion packer stops annotating and sealing, and when the well with large difference of pressure between layers and physical properties of a reservoir layer stops injecting, the well is easy to cause the high-pressure layer to return and spit, the channeling layer is generated, and the tubular column is buried.
Disclosure of Invention
The invention aims to provide a concentric double-channel long-acting layered water injection device and a concentric double-channel long-acting layered water injection method, wherein a packer is not unsealed when the injection is stopped, and the pressure difference between layers does not cause the unsealing of the packer, and the unsealing is performed by using a back flushing well or a forward rotation tubular column. The invention solves the problem of sand burying pipe column caused by stratum return in the loose sandstone oil reservoir stop injection process, and has important significance for prolonging the pipe column validity period and meeting the long-term injection allocation and later-period replacement safety.
In order to achieve the purpose, the concentric double-channel long-acting layered water injection device adopts the following technical scheme that the concentric double-channel long-acting layered water injection device comprises an unsealing controller, a first bridge type self-locking expansion packer, a first bridge type anti-backflow water distributor, a second bridge type self-locking expansion packer and a second bridge type anti-backflow water distributor which are sequentially connected from top to bottom, wherein the first bridge type anti-backflow water distributor is positioned in a first water injection layer, and the second bridge type anti-backflow water distributor is positioned in a second water injection layer.
And the bottom end of the second bridge type anti-return water distributor is connected with a well flushing valve.
The deblocking controller includes an upper joint 101, a sealing ring 102, a deblocking piston 103, a spring 104, and a lower joint 105. The upper joint 101 is connected with the lower joint 105 through threads, and the sealing ring 102 is arranged at the end part of the deblocking piston 103; the deblocking piston 103 and the spring 104 are sequentially installed in the annulus between the upper joint 101 and the lower joint 105.
The bridge type self-locking expansion packer comprises an upper joint 201, an outer central tube 202, an inner central tube 203, an unsealing piston 204, a compression ring 205, a blocking head 206, a bridge type short joint 207, a sealing ring 208, a spring 209, a blocking bowl 210, a rubber cylinder 211 and a lower joint 212. The upper joint 201 is connected with the outer central tube 202 through threads; the lower end of the outer central tube 202 is connected with the lower joint 213 through threads; the inner end and the outer end of the bridge nipple 207 are welded together in the inner central tube 203 and the outer central tube 202 respectively; a deblocking piston 204 is disposed in the annular space between the outer center tube 202 and the upper joint 201; the upper end and the lower end of the compression ring 205 are respectively arranged in annular spaces formed by the outer central tube 202 and the baffle head 206, and the outer central tube 202 and the baffle bowl 210, and the baffle head 206 is respectively connected with the upper joint 201 and the baffle bowl 210 through threads; a seal ring 209 is placed at the end of the pressure ring 205; the spring 209 is arranged in an annular space formed by the outer central tube 202 and the baffle bowl 210; the rubber cylinder 211 is arranged outside the outer central tube 202, and the upper end and the lower end are respectively connected with the baffle bowl 210 and the lower joint 211 through threads.
The bridge type anti-backflow water distributor comprises an upper joint 301, an outer central tube 302, a spring 303, an inner central tube 304, a water outlet piston 305, a bridge type short joint 306 and a blocking head 307. The upper joint 301 is screwed with the outer central tube 302; the lower end of the outer central tube 302 is connected with the baffle 307 through threads; the spring 303 is arranged outside the outer central tube 302, and is provided with a water outlet piston 305 and a baffle 307 in sequence; the inner and outer ends of the bridge nipple 306 are welded together in the inner and outer center tubes 304, 302, respectively.
In order to achieve the other purpose, the invention adopts the following technical scheme that the concentric double-channel long-acting layered water injection method is adopted, injected water flows to a setting pressure transmission hole on the bridge type self-locking expansion packer through an oil pipe, and the packer rubber barrel is inflated to a sleeve by utilizing hydraulic pressure to finish setting; injecting water through a water injection channel on the bridge type anti-backflow water distributor, pushing the piston to enter an oil sleeve annulus by utilizing hydraulic pressure to overcome the compression force of a spring, and finally injecting the water into a stratum; the pressure in the pipe column is reduced after the injection is stopped, the self-locking piston of the bridge self-locking expansion packer is closed under the action of the self-locking spring and the hydraulic pressure in the rubber cylinder, so that the inner cavity of the rubber cylinder is always sealed with high-pressure liquid, and the rubber cylinder is ensured to be in a setting state under the condition of low pressure in the pipe column.
The oil jacket annulus is pressurized, pressure fluid flows into a liquid flow steering hole on the deblocking controller to overcome a compression spring arranged in the liquid flow steering hole and push away a sealing piston, pressure is transmitted to the self-locking piston through a partial annulus channel formed by the deblocking controller, the bridge type self-locking expansion packer and an inner central tube and an outer sleeve of the bridge type anti-return water distributor, the self-locking piston is opened to overcome the compression force of the self-locking spring, high-pressure fluid in the inner cavity of a rubber cylinder is discharged, and the rubber cylinder is automatically recovered to finish deblocking.
After the packer is opened by reverse pressure, the reverse circulation well flushing is continued, well flushing liquid flows downwards through an annulus formed by the pipe column and the sleeve, and enters the inside of the pipe column through a well flushing channel of the well flushing valve to return to the ground.
Compared with the prior art, the invention has the following beneficial effects:
1. The deblocking controller, the packer and the water distributor adopt concentric double-channel structures, the inner channel is set and injected with water, and the annular channel deblocking packer;
2. the sealing self-locking layering technology is adopted, the packer is not unsealed after injection stopping, the unsealing cannot be caused by high-pressure and interlayer interference of the ground, and the unsealing is performed by means of reverse pressing;
3. the water distributor and the well flushing valve adopt a one-way flow design, and stratum fluid cannot enter and exit the shaft and enter the inside of the tubular column after injection is stopped.
Drawings
FIG. 1 is a schematic diagram of a concentric dual channel long-acting stratified water injection device of the present invention;
FIG. 2 is a cross-sectional view of the decapsulation controller;
FIG. 3 is a cross-sectional view of a bridge self-locking expanding packer construction;
FIG. 4 is an enlarged view of a portion of FIG. 3;
fig. 5 is a cross-sectional view of a bridge type anti-backflow water dispenser.
In fig. 1: the device comprises an unsealing controller 1, a bridge type self-locking expansion packer 2, a bridge type anti-backflow water distributor 3 and a well flushing valve 4.
In fig. 2: an upper joint 101, a sealing ring 102, a deblocking piston 103, a spring 104 and a lower joint 105.
In fig. 3: the sealing device comprises an upper joint 201, an outer central tube 202, an inner central tube 203, a deblocking piston 204, a compression ring 205, a blocking head 206, a bridge nipple 207, a sealing ring 208, a spring 209, a blocking bowl 210, a rubber cylinder 211 and a lower joint 212;
In fig. 4: the device comprises an upper joint 301, an outer central tube 302, a spring 303, an inner central tube 304, a water outlet piston 305, a bridge nipple 306 and a blocking head 307.
Detailed Description
The detailed description and technical content of the present invention are described below with reference to the accompanying drawings, which are provided for reference and description only, and are not intended to limit the present invention.
According to fig. 1 to 5, the concentric double-channel long-acting layered water injection device comprises an unsealing controller 1, a first bridge type self-locking expansion packer, a first bridge type anti-return water distributor, a second bridge type self-locking expansion packer and a second bridge type anti-return water distributor which are sequentially connected from top to bottom, wherein the first bridge type anti-return water distributor is positioned in a first water injection layer, and the second bridge type anti-return water distributor is positioned in a second water injection layer. And the bottom end of the second bridge type anti-return water distributor is connected with a well flushing valve.
The deblocking controller includes an upper joint 101, a sealing ring 102, a deblocking piston 103, a spring 104, and a lower joint 105. The upper joint 101 is connected with the lower joint 105 through threads, and the sealing ring 102 is arranged at the end part of the deblocking piston 103; the deblocking piston 103 and the spring 104 are sequentially installed in the annulus between the upper joint 101 and the lower joint 105.
The bridge type self-locking expansion packer comprises an upper joint 201, an outer central tube 202, an inner central tube 203, an unsealing piston 204, a compression ring 205, a blocking head 206, a bridge type short joint 207, a sealing ring 208, a spring 209, a blocking bowl 210, a rubber cylinder 211 and a lower joint 212. The upper joint 201 is connected with the outer central tube 202 through threads; the lower end of the outer central tube 202 is connected with the lower joint 213 through threads; the inner end and the outer end of the bridge nipple 207 are welded together in the inner central tube 203 and the outer central tube 202 respectively; a deblocking piston 204 is disposed in the annular space between the outer center tube 202 and the upper joint 201; the upper end and the lower end of the compression ring 205 are respectively arranged in annular spaces formed by the outer central tube 202 and the baffle head 206, and the outer central tube 202 and the baffle bowl 210, and the baffle head 206 is respectively connected with the upper joint 201 and the baffle bowl 210 through threads; a seal ring 209 is placed at the end of the pressure ring 205; the spring 209 is arranged in an annular space formed by the outer central tube 202 and the baffle bowl 210; the rubber cylinder 211 is arranged outside the outer central tube 202, and the upper end and the lower end are respectively connected with the baffle bowl 210 and the lower joint 211 through threads.
The bridge type anti-backflow water distributor comprises an upper joint 301, an outer central tube 302, a spring 303, an inner central tube 304, a water outlet piston 305, a bridge type short joint 306 and a blocking head 307. The upper joint 301 is screwed with the outer central tube 302; the lower end of the outer central tube 302 is connected with the baffle 307 through threads; the spring 303 is arranged outside the outer central tube 302, and is provided with a water outlet piston 305 and a baffle 307 in sequence; the inner and outer ends of the bridge nipple 306 are welded together in the inner and outer center tubes 304, 302, respectively.
Setting and water injection: the injected water flows to a setting pressure transmission hole on the bridge type self-locking expansion packer 2 through an oil pipe, and the packer rubber barrel is inflated to a sleeve by utilizing hydraulic pressure to finish setting; the injected water passes through a water injection channel on the bridge type anti-return water distributor 3, and pushes the piston to enter the oil sleeve annulus by overcoming the compression force of the spring by utilizing hydraulic pressure, so that the injected water is finally injected into the stratum. Self-locking: the pressure in the pipe column is reduced after the injection is stopped, and the self-locking piston of the bridge self-locking expansion packer 2 is closed under the action of the self-locking spring and the hydraulic pressure in the rubber cylinder, so that the inner cavity of the rubber cylinder is always sealed with high-pressure liquid, and the rubber cylinder is ensured to be in a setting state under the condition of low pressure in the pipe column.
Deblocking: from oil jacket annular space to press, the pressure fluid flows into the liquid flow steering hole on the deblocking controller 1 to overcome the compression spring arranged in the liquid flow steering hole and push away the sealing piston, and the pressure is transmitted to the self-locking piston through the deblocking pressure transmission hole of each stage of bridge type self-locking expansion packer 2 through the partial annular space channel formed by the deblocking controller 1, the bridge type self-locking expansion packer 2 and the inner central tube and the outer sleeve of the bridge type anti-return water distributor 3, so that the self-locking piston is opened by overcoming the compression force of the self-locking spring and the high-pressure fluid in the inner cavity of the rubber cylinder is removed, and the rubber cylinder is automatically recovered to finish deblocking.
Flushing: after the packer is opened by reverse pressure, the reverse circulation well flushing is continued, well flushing liquid flows downwards through an annulus formed by the pipe column and the sleeve, and enters the inside of the pipe column through a well flushing channel of the well flushing valve 4 to return to the ground.
The invention has stronger adaptability in sand production wells, and the packer is controlled to be unsealed by utilizing the independent unsealing channel, so that buried pipe columns caused by the production of sand in the stratum during stopping injection are effectively avoided, and the invention has important significance in prolonging the split injection validity period of the pipe columns and improving the testing and debugging success rate.
The foregoing description of the preferred embodiments of the present invention is not intended to limit the scope of the invention, but rather to limit the scope of the invention to the equivalents of the claims to which the invention pertains.
Claims (4)
1. The concentric double-channel long-acting layered water injection device is characterized by comprising an unsealing controller, a first bridge type self-locking expansion packer, a first bridge type anti-backflow water distributor, a second bridge type self-locking expansion packer and a second bridge type anti-backflow water distributor which are sequentially connected from top to bottom, wherein the first bridge type anti-backflow water distributor is positioned in a first water injection layer, and the second bridge type anti-backflow water distributor is positioned in a second water injection layer;
The bottom end of the second bridge type anti-backflow water distributor is connected with a well flushing valve;
The bridge type self-locking expansion packer comprises an upper joint, an outer central tube, an inner central tube, an unsealing piston, a compression ring, a blocking head, a bridge type pup joint, a sealing ring, a spring, a blocking bowl, a rubber cylinder and a lower joint; the upper joint is connected with the outer central tube through threads; the lower end of the outer central tube is connected with the lower joint through threads; the inner end and the outer end of the bridge type pup joint are welded together in the inner central tube and the outer central tube respectively; the deblocking piston is arranged in an annular space between the outer central tube and the upper joint; the upper end of the compression ring is arranged in an annular space formed by the outer central tube and the baffle head, the lower end of the inner pressure ring is arranged in an annular space formed by the outer central tube and the baffle bowl, and the baffle head is respectively connected with the upper joint and the baffle bowl through threads; the sealing ring is arranged at the end part of the compression ring; the spring is arranged in an annular space formed by the outer central tube and the baffle bowl; the rubber cylinder is arranged outside the outer central tube, and the upper end and the lower end of the rubber cylinder are respectively connected with the baffle bowl and the lower joint through threads;
The deblocking controller comprises an upper joint, a sealing ring, a deblocking piston, a spring and a lower joint, wherein the upper joint is connected with the lower joint through threads, and the sealing ring is arranged at the end part of the deblocking piston; the deblocking piston and the spring are sequentially arranged in an annulus between the upper joint and the lower joint;
The bridge type anti-backflow water distributor comprises an upper joint, an outer central tube, a spring, an inner central tube, a water outlet piston, a bridge type nipple and a blocking head; the upper joint is connected with the outer central tube through threads; the lower end of the outer central tube is connected with the baffle head through threads; the spring is arranged outside the outer central tube, and is provided with a water outlet piston and a baffle head in sequence; the inner end and the outer end of the bridge type pup joint are respectively welded with the inner central tube and the outer central tube.
2. The water injection method adopting the concentric double-channel long-acting layered water injection device according to claim 1, wherein the injected water flows to a setting pressure transmission hole on the bridge type self-locking expansion packer through an oil pipe, and the packer rubber is inflated to a sleeve by utilizing hydraulic pressure to finish setting; injecting water through a water injection channel on the bridge type anti-backflow water distributor, pushing the piston to enter an oil sleeve annulus by utilizing hydraulic pressure to overcome the compression force of a spring, and finally injecting the water into a stratum; the pressure in the pipe column is reduced after the injection is stopped, the self-locking piston of the bridge self-locking expansion packer is closed under the action of the self-locking spring and the hydraulic pressure in the rubber cylinder, so that the inner cavity of the rubber cylinder is always sealed with high-pressure liquid, and the rubber cylinder is ensured to be in a setting state under the condition of low pressure in the pipe column.
3. The water injection method according to claim 2, wherein the oil jacket annulus is pressurized, the pressure fluid flows into the fluid flow steering hole on the deblocking controller to overcome the compression spring arranged in the fluid flow steering hole and push away the sealing piston, the pressure is transmitted to the self-locking piston through the deblocking pressure transmitting holes of the bridge self-locking expansion packer at each level through the partial annulus channel formed by the deblocking controller, the bridge self-locking expansion packer and the inner central tube and the outer sleeve of the bridge type anti-return water distributor, the self-locking piston is opened to overcome the compression force of the self-locking spring, the high-pressure fluid in the inner cavity of the rubber cylinder is discharged, and the rubber cylinder is automatically recovered to finish deblocking.
4. A water injection method according to claim 3 wherein after the packer is de-packer by reverse pressure, the reverse circulation well flushing is continued, the flushing fluid flows down through the annulus formed by the tubing string and the casing, and enters the interior of the tubing string through the flushing passage of the flushing valve and returns to the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572778.3A CN109252834B (en) | 2017-07-13 | 2017-07-13 | Concentric double-channel long-acting layered water injection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710572778.3A CN109252834B (en) | 2017-07-13 | 2017-07-13 | Concentric double-channel long-acting layered water injection device and method |
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| Publication Number | Publication Date |
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| CN109252834A CN109252834A (en) | 2019-01-22 |
| CN109252834B true CN109252834B (en) | 2024-05-24 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112012703B (en) * | 2019-05-29 | 2022-08-30 | 中国海洋石油集团有限公司 | Layer-by-layer fixed-point fluid injection device and injection method |
| CN111396008B (en) * | 2020-04-14 | 2024-07-12 | 山东大东联石油设备有限公司 | Small-diameter layered sand-prevention water-injection whole-well backwashing well integrated tubular column and method |
Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096633U (en) * | 1991-08-02 | 1992-02-19 | 中原石油勘探局采油工艺处 | Packer (CN) |
| CN2861470Y (en) * | 2005-12-13 | 2007-01-24 | 中国石化胜利油田有限公司采油工艺研究院 | Airtight power expansion packer |
| CN201090199Y (en) * | 2007-06-20 | 2008-07-23 | 中国石油天然气股份有限公司 | Two-stage three-section separate injection string capable of preventing water injection layer section from reverse-discharging and channeling |
| CN201443346U (en) * | 2009-05-15 | 2010-04-28 | 赵广友 | Double-channel packer for separated injection washing of water injection well |
| CN201486516U (en) * | 2009-07-10 | 2010-05-26 | 毛元红 | Bridge isolating tool |
| CN201810260U (en) * | 2010-10-15 | 2011-04-27 | 西安精实信石油科技开发有限责任公司 | Logging twin packer for cased well perforation interval |
| CN201924873U (en) * | 2010-12-15 | 2011-08-10 | 张玉雪 | Long-term expanding packer |
| CN202417457U (en) * | 2011-12-01 | 2012-09-05 | 中国石油化工股份有限公司 | Flowback preventing hollow layered water injection pipe column |
| CN202531093U (en) * | 2012-03-09 | 2012-11-14 | 中国石油天然气股份有限公司 | Expanding packer |
| CN202731863U (en) * | 2012-06-13 | 2013-02-13 | 中国石油天然气股份有限公司 | Long-acting separate-layer water injection string for directional well |
| CN204024615U (en) * | 2014-07-28 | 2014-12-17 | 克拉玛依市红都有限责任公司 | Concentric three pipe layered water fillers |
| CN104234671A (en) * | 2014-09-23 | 2014-12-24 | 中国石油天然气股份有限公司 | Water-gathering same-well layering same-injection process pipe column |
| CN204703876U (en) * | 2015-05-22 | 2015-10-14 | 中国石油天然气股份有限公司 | Bridge type concentric separate injection pipe column |
| CN204899817U (en) * | 2015-08-12 | 2015-12-23 | 新疆华隆油田科技股份有限公司 | But well -flushing is prevented returning and is told control valve device |
| CN106121602A (en) * | 2016-06-30 | 2016-11-16 | 中国石油天然气股份有限公司 | Double-channel water distributor for concentric double-layer oil pipe separate injection |
| CN106321035A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Full-shaft flowback-preventing separated layer water injection tubular column |
| CN106437641A (en) * | 2015-08-11 | 2017-02-22 | 中国石油化工股份有限公司 | Independent safe long-acting double-pipe water injection pipe column |
| CN206246101U (en) * | 2016-11-18 | 2017-06-13 | 中国石油化工股份有限公司 | A kind of long-acting injection well downhole flow regulator of bridge type mechanism low discharge |
| CN207161064U (en) * | 2017-07-13 | 2018-03-30 | 中国石油化工股份有限公司 | A kind of long-acting layered water filler of binary channels with one heart |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7896079B2 (en) * | 2008-02-27 | 2011-03-01 | Schlumberger Technology Corporation | System and method for injection into a well zone |
-
2017
- 2017-07-13 CN CN201710572778.3A patent/CN109252834B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2096633U (en) * | 1991-08-02 | 1992-02-19 | 中原石油勘探局采油工艺处 | Packer (CN) |
| CN2861470Y (en) * | 2005-12-13 | 2007-01-24 | 中国石化胜利油田有限公司采油工艺研究院 | Airtight power expansion packer |
| CN201090199Y (en) * | 2007-06-20 | 2008-07-23 | 中国石油天然气股份有限公司 | Two-stage three-section separate injection string capable of preventing water injection layer section from reverse-discharging and channeling |
| CN201443346U (en) * | 2009-05-15 | 2010-04-28 | 赵广友 | Double-channel packer for separated injection washing of water injection well |
| CN201486516U (en) * | 2009-07-10 | 2010-05-26 | 毛元红 | Bridge isolating tool |
| CN201810260U (en) * | 2010-10-15 | 2011-04-27 | 西安精实信石油科技开发有限责任公司 | Logging twin packer for cased well perforation interval |
| CN201924873U (en) * | 2010-12-15 | 2011-08-10 | 张玉雪 | Long-term expanding packer |
| CN202417457U (en) * | 2011-12-01 | 2012-09-05 | 中国石油化工股份有限公司 | Flowback preventing hollow layered water injection pipe column |
| CN202531093U (en) * | 2012-03-09 | 2012-11-14 | 中国石油天然气股份有限公司 | Expanding packer |
| CN202731863U (en) * | 2012-06-13 | 2013-02-13 | 中国石油天然气股份有限公司 | Long-acting separate-layer water injection string for directional well |
| CN204024615U (en) * | 2014-07-28 | 2014-12-17 | 克拉玛依市红都有限责任公司 | Concentric three pipe layered water fillers |
| CN104234671A (en) * | 2014-09-23 | 2014-12-24 | 中国石油天然气股份有限公司 | Water-gathering same-well layering same-injection process pipe column |
| CN204703876U (en) * | 2015-05-22 | 2015-10-14 | 中国石油天然气股份有限公司 | Bridge type concentric separate injection pipe column |
| CN106437641A (en) * | 2015-08-11 | 2017-02-22 | 中国石油化工股份有限公司 | Independent safe long-acting double-pipe water injection pipe column |
| CN204899817U (en) * | 2015-08-12 | 2015-12-23 | 新疆华隆油田科技股份有限公司 | But well -flushing is prevented returning and is told control valve device |
| CN106121602A (en) * | 2016-06-30 | 2016-11-16 | 中国石油天然气股份有限公司 | Double-channel water distributor for concentric double-layer oil pipe separate injection |
| CN106321035A (en) * | 2016-10-09 | 2017-01-11 | 中国石油化工股份有限公司 | Full-shaft flowback-preventing separated layer water injection tubular column |
| CN206246101U (en) * | 2016-11-18 | 2017-06-13 | 中国石油化工股份有限公司 | A kind of long-acting injection well downhole flow regulator of bridge type mechanism low discharge |
| CN207161064U (en) * | 2017-07-13 | 2018-03-30 | 中国石油化工股份有限公司 | A kind of long-acting layered water filler of binary channels with one heart |
Non-Patent Citations (1)
| Title |
|---|
| 自分流式井下调压注聚工艺技术研究及应用;孙金峰;罗杨;王磊;渠慧敏;马艳洁;谭云贤;;石油机械;20160831;44(08);第75-78页 * |
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