CN101463718A - Same-well production technique column for low-permeation horizontal well - Google Patents
Same-well production technique column for low-permeation horizontal well Download PDFInfo
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- CN101463718A CN101463718A CNA2008102498904A CN200810249890A CN101463718A CN 101463718 A CN101463718 A CN 101463718A CN A2008102498904 A CNA2008102498904 A CN A2008102498904A CN 200810249890 A CN200810249890 A CN 200810249890A CN 101463718 A CN101463718 A CN 101463718A
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Abstract
The invention relates to a low-permeability horizontal well identical-well injection-production technique pipe column. The pipe column comprises an oil pipe column, a pump, a bridge packer A, a bridge packer B, an inner pipe, a bridge dividing valve and an injection allocator; and the pipe is characterized in that the pump, the bridge packer A, the bridge dividing valve, the bridge packer B and the injection allocator are arranged and connected at an oil pipe in sequence; the inner pipe is arranged in the oil pipe, the middle part thereof is connected with the bridge dividing valve, and the two ends thereof are connected with the bridge packer A and the bridge packer B. The invention is characterized in that the developing cost can be reduced, the investment is less, the return is obtained quick, the construction is convenient, identical-layer injection-production distance can be regulated flexibly, the water-injection pressure loss can be reduced, the injection-production corresponding rate can be improved, the augmented-injection requirement of the low-permeability horizontal well can be met, the stabilized production period of the low-permeability horizontal well can be prolonged, and the extraction percentage of the low-permeability reservoir can be improved. Therefore, the invention is applied widely in the injection-production technique of oil production.
Description
One, technical field
The present invention relates to a kind of oil exploitation water injection well lower tubular column, particularly a kind of same-well production technique column for low-permeation horizontal well.
Two, background technology
Traditional oil exploitation water injection well lower tubular column, be generally special independent producing well flow string, water injection well is a water injection string, need prepare special filling pipe, water injecting pump to the stratum water filling by water-injection station during the water filling of water injection well water injection string, to replenish stratum energy, improve oil production, be the essential equipment of oil exploitation, the shortcoming or the deficiency of its existence are: 1. facility complexity must be provided with water tank, water flooding pump station, water filling flow process and filtration as water injection well and wait until auxiliary equipment; 2. investment is big, the cycle is long, expense is high, take effect slowly, particularly produced-water reinjection, also needs a whole set of produced-water reinjection treatment facility, and expense cost can be bigger; 3. the water filling water source of some low, little, difficult, inclined to one side blocks and oil reservoir is a hang-up.Existing a kind of same-well injection is adopted tubing string, form by sand screen, well washing apparatus, cup packer, screen casing, electric submersible pump etc., but it applies on the straight well, and adopt water in the water layer in same well, inject producing horizon, therefore, in horizontal well, can't use, more be difficult in the hyposmosis horizontal well use.
Three, summary of the invention
The purpose of this invention is to provide a kind of same-well production technique column for low-permeation horizontal well, adopt bridge-type packer, bridge-type flow divider and the combination of injection allocation device, in with layer, adopt the water water filling, the shortcoming or the deficiency that had both overcome effectively or avoided existing in the above-mentioned prior art can successfully realize hyposmosis horizontal well same-well injection excavating technology again.
Same-well production technique column for low-permeation horizontal well of the present invention, comprise tubing string, pump, bridge-type packer A, bridge-type packer B, interior pipe, bridge-type flow divider, injection allocation device, it is characterized in that described pump, bridge-type packer people, bridge-type flow divider, bridge-type packer B and injection allocation device are installed and connected on the oil pipe in turn, pipe is installed in the oil pipe in described, its middle part is connected with the bridge-type flow divider, and two ends are connected with bridge-type packer B with bridge-type packer A.
Wherein, described pump is positioned at straight well section place.Described bridge-type packer A is positioned at before the mined bed, between the extraction interval and injection interval of bridge-type packer B in mined bed.Described bridge-type flow divider is arranged in mined bed extraction interval place, which is provided with shunting switching mechanism.Described shunting switching mechanism comprise on the branch fluid circumference and the cross section of one end on be distributed with split channel, one side this split channel starter gate valve and spring be installed.Described injection allocation device is arranged in mined bed injection interval place.
The present invention has following advantage compared with prior art:
1, effectively reduces development cost, less investment, instant effect, easy construction;
But 2 flexible modulation are annotated with layer and are adopted distance, reduce the water injection pressure loss, improve to annotate and adopt corresponding rate, satisfy the augmented injection needs of hyposmosis horizontal well;
3, effectively prolong the stable production period of hyposmosis horizontal well, improve the recovery ratio of LOW PERMEABILITY RESERVOIR;
Four, description of drawings
Fig. 1 is a kind of structural representation of the present invention
Fig. 2 is for pressing A-A shown in Figure 1 to structural representation
Fig. 3 is for pressing shunting switching mechanism schematic diagram shown in Figure 1
Fig. 4 is for pressing A-A shown in Figure 3 to structural representation
Five, the specific embodiment
Consult Fig. 1-Fig. 4, a kind of same-well production technique column for low-permeation horizontal well comprises tubing string, pump, bridge-type packer A, bridge-type packer B, interior pipe, bridge-type flow divider, injection allocation device.Pump 1, bridge-type packer A3, bridge-type flow divider 6, bridge-type packer B7 and injection allocation device 8 are installed and connected on the oil pipe 4 in turn.Interior pipe 5 is installed in the oil pipe 4, and its middle part is connected with bridge-type flow divider 6, and two ends are connected with bridge-type packer B7 with bridge-type packer A3.
During site operation,, inject from the oil jacket annular space when tubing string during down to design attitude, ALT-CH alternate channel conversion by first bridge-type packer A3, in the pipe 5, enter again in the oil pipe 4 in entering, enter injection interval through injection allocation device 8 through bridge-type flow divider 6, bridge-type packer B7; Simultaneously, the shunting transformational structure of the oil of extraction interval by bridge-type flow divider 6 is transformed into the oil pipe 4 through bridge-type packer A3 from the annular space of interior pipe and oil pipe, and by oil well pump 1 pump to ground.So just realize the technology of subsection water injection, oil recovery in the same horizontal interval.
Claims (6)
1, a kind of same-well production technique column for low-permeation horizontal well, comprise tubing string, pump, bridge-type packer A, bridge-type packer B, interior pipe, bridge-type flow divider, injection allocation device, it is characterized in that described pump, bridge-type packer A, bridge-type flow divider, bridge-type packer B and injection allocation device are installed and connected on the oil pipe in turn, pipe is installed in the oil pipe in described, its middle part is connected with the bridge-type flow divider, and two ends are connected with bridge-type packer B with bridge-type packer A.
2, same-well production technique column for low-permeation horizontal well according to claim 1 is characterized in that described pump is positioned at straight well section place.
3, same-well production technique column for low-permeation horizontal well according to claim 1 is characterized in that described bridge-type packer A is positioned at before the mined bed, between the extraction interval and injection interval of bridge-type packer B in mined bed.
4, same-well production technique column for low-permeation horizontal well according to claim 1 is characterized in that described bridge-type flow divider is arranged in mined bed extraction interval place, which is provided with shunting switching mechanism.
5, same-well production technique column for low-permeation horizontal well according to claim 4, it is characterized in that described shunting switching mechanism comprises on the branch fluid circumference and the cross section of one end on be distributed with split channel, one side this split channel starter gate valve and spring be installed.
6, same-well production technique column for low-permeation horizontal well according to claim 1 is characterized in that described injection allocation device is arranged in mined bed injection interval place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102498904A CN101463718B (en) | 2008-12-31 | 2008-12-31 | Same-well production technique column for low-permeation horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102498904A CN101463718B (en) | 2008-12-31 | 2008-12-31 | Same-well production technique column for low-permeation horizontal well |
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| CN101463718A true CN101463718A (en) | 2009-06-24 |
| CN101463718B CN101463718B (en) | 2012-05-23 |
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| CN2008102498904A Active CN101463718B (en) | 2008-12-31 | 2008-12-31 | Same-well production technique column for low-permeation horizontal well |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337872A (en) * | 2011-09-19 | 2012-02-01 | 中国石油化工股份有限公司 | One-grade three-section integrated water distribution tubular column of horizontal well |
| CN102505921A (en) * | 2011-11-04 | 2012-06-20 | 中国石油天然气股份有限公司 | Open hole horizontal well water exploration pipe column |
| CN102704900A (en) * | 2012-06-28 | 2012-10-03 | 中国石油化工股份有限公司 | Subsection water injection tubular column for shallow measurement in vertical well section of horizontal well |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN105358792A (en) * | 2013-07-04 | 2016-02-24 | Ior加拿大有限公司 | Method for producing oil from induced fractures using a single wellbore and multiple-channel tubing |
| CN106246150A (en) * | 2016-09-18 | 2016-12-21 | 中国石油天然气股份有限公司 | Oil field fracturing transformation method |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | Injection and production string in coal-bed gas well |
| CN112240194A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
| CN112240193A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multistage oil-water separation and same-well injection-production device in horizontal shaft |
| CN113431529A (en) * | 2020-03-23 | 2021-09-24 | 中国石油天然气股份有限公司 | Underground oil-water separation same-well injection-production system and tubular column |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6089322A (en) * | 1996-12-02 | 2000-07-18 | Kelley & Sons Group International, Inc. | Method and apparatus for increasing fluid recovery from a subterranean formation |
| CN201037385Y (en) * | 2006-10-17 | 2008-03-19 | 中国石油化工股份有限公司 | Bridge type leak-stopping pipe column |
-
2008
- 2008-12-31 CN CN2008102498904A patent/CN101463718B/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102337872A (en) * | 2011-09-19 | 2012-02-01 | 中国石油化工股份有限公司 | One-grade three-section integrated water distribution tubular column of horizontal well |
| CN102505921A (en) * | 2011-11-04 | 2012-06-20 | 中国石油天然气股份有限公司 | Open hole horizontal well water exploration pipe column |
| CN102505921B (en) * | 2011-11-04 | 2014-02-05 | 中国石油天然气股份有限公司 | Open hole horizontal well water exploration pipe column |
| CN102704900A (en) * | 2012-06-28 | 2012-10-03 | 中国石油化工股份有限公司 | Subsection water injection tubular column for shallow measurement in vertical well section of horizontal well |
| CN105358792A (en) * | 2013-07-04 | 2016-02-24 | Ior加拿大有限公司 | Method for producing oil from induced fractures using a single wellbore and multiple-channel tubing |
| CN104481484A (en) * | 2014-12-26 | 2015-04-01 | 东营市福利德石油科技开发有限责任公司 | Horizontal well segmented intermittent steam huff and puff injection-production integrated pipe column |
| CN105672965B (en) * | 2016-04-14 | 2018-04-06 | 荆州市翔龙石油科技有限公司 | A kind of bridge-type separate layer water injection string and its operating procedure |
| CN106246150A (en) * | 2016-09-18 | 2016-12-21 | 中国石油天然气股份有限公司 | Oil field fracturing transformation method |
| CN108071376A (en) * | 2016-11-17 | 2018-05-25 | 中国石油天然气股份有限公司 | Injection and production string in coal-bed gas well |
| CN113431529A (en) * | 2020-03-23 | 2021-09-24 | 中国石油天然气股份有限公司 | Underground oil-water separation same-well injection-production system and tubular column |
| CN112240194A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multi-stage oil-water separation and same-well injection-production method in horizontal shaft |
| CN112240193A (en) * | 2020-11-17 | 2021-01-19 | 东北石油大学 | Multistage oil-water separation and same-well injection-production device in horizontal shaft |
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| Publication number | Publication date |
|---|---|
| CN101463718B (en) | 2012-05-23 |
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