CN203808954U - Three-tube ground separated layer water injection device - Google Patents
Three-tube ground separated layer water injection device Download PDFInfo
- Publication number
- CN203808954U CN203808954U CN201420141727.7U CN201420141727U CN203808954U CN 203808954 U CN203808954 U CN 203808954U CN 201420141727 U CN201420141727 U CN 201420141727U CN 203808954 U CN203808954 U CN 203808954U
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- China
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- water injection
- separated layer
- tube
- sleeve body
- casing pipe
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- Expired - Fee Related
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The utility model discloses a three-tube ground separated layer water injection device. An upper packer is arranged outside an upper oil tube; a reducer union is arranged on the lower end of the upper oil tube; a sliding sleeve body is arranged on the reducer union; a pressure relief water hole is formed in the sliding sleeve body; a lower casing pipe is arranged on the lower end of the sliding sleeve body; a lower packer is arranged outside the lower casing pipe; a pump work barrel is arranged on the internal upper part of the lower casing pipe; a constant pressure bottom plug is arranged on the lower end of the lower casing pipe. According to the three-tube ground separated layer water injection device, a three-tube separated layer water injection technology is adopted, the separated layer water injection is precisely subdivided, the separated layer deployment can be carried out on the ground, water injection is realized for three different layers of a water injection well, the water injection amount and the water injection speed of each layer can be freely controlled, the formation pressure of a producing well is increased, the recovery efficiency of an oil well is thus improved, the problems that the deployment of underground separated layer injection technology is difficult, and the water injection amount is difficult to control are solved, the formation pressure is effectively increased, the work flow is optimized, the production efficiency of a low permeability oilfield is improved, the risk is reduced, the low permeability oilfield can keep long-term stable production, and the three-tube ground separated layer water injection device can be generalized and used on the oilfield.
Description
Technical field
The utility model belongs to producing oil, gas, water from well; The method of solubility or solubilization material or slurry of mineral or equipment technical field, be specifically related to a kind of three pipe ground layered water fillers.
Background technology
Low permeability oil field refers to the oil field that Oil Layer Reservoir permeability is low, abundance is low, single well productivity is low.Low-permeability oil gas field is important in inhibiting in China's oil and gas development, China's Low Permeability Oil/gas resource distribution has that oily is many, Oil-gas Accumulation Types is many, distributed areas are wide and the feature of " under upper gas, oil, marine facies gassiness are that main, terrestrial facies oil gas has concurrently ", in explored reserves, the ratio of low-permeability oil deposit reserves is very high, account for the more than 2/3 of national reserves, potentiality to be exploited is huge.
Realize the economical and effective exploitation in low-permeability oil gas field, face a lot of problems that need solution, wherein topmost is exactly technical barrier.Because low-permeability oil gas field is not structure oil-gas Layer, but lithologic character stratum oil-gas reservoir, difficulties in exploration is very large.Between the exploratory period, how to be accurately familiar with the regularity of distribution in low-permeability oil gas field, area, the enrichment region of searching oil gas etc. of controlling it are all the problems that need to continue to probe into.In addition, low permeability oil field is often with the feature of low abundance and low pressure, and shortage of natural, causes oil well natural production very low.Therefore, the well yield that improves such oil gas field by technological innovation is also a problem, the conventional method of prior art is to make down-hole keep higher strata pressure by leading seperated layer water injection, set up higher displacement pressure system, thereby reduce because of the strata pressure permeability injury causing that declines, improved ultimate recovery.Although low-permeability oil deposit injection allocation amount is low, due to its serious heterogeneity, interlayer contradiction is large, realize reasonable water distribution and just must carry out seperated layer water injection.
The realization of seperated layer water injection, domestic most employing laminated distributor under well water-distributing tool divides interval water filling at present, due to individual layer water distribution quantity low (10m3/d left and right), surveys debug difficulties, and water nozzle little Yi stops up; Well depth, well track is poor, and scale problems is outstanding in addition, and water nozzle pulling difficulty, even cannot pull out, and laminated distributor under well water filling still has a lot of weak points.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned laminated distributor under well water-distributing tool, and a kind of reasonable in design, simple in structure, utilization rate is high, flood effectiveness is good three pipe ground layered water fillers are provided.
Addressing the above problem adopted technical scheme is:
Be set up packer at upper oil pipe peripheral hardware, lower end arranges reducer union, sleeve body is set in reducer union, is processed with release water hole on sleeve body, sleeve body lower end is provided with setting of casing, setting of casing is outside equipped with lower packet, and setting of casing internal upper part is provided with pump work cylinder, lower end is provided with level pressure bottom plug.
The utility model has adopted three pipe stratified injection water technologies, the water filling of precisely subdivided layer, make layering allotment be able to carry out on ground, carry out water filling can to three different layers positions of water injection well, freely control water injection rate and the waterflood injection rate of each layer of position, increase the strata pressure of producing well, thereby improve oil well recovery ratio, down-hole zonal injection technology allotment difficulty, the unmanageable difficult problem of water injection rate are solved, effectively increase strata pressure, optimized workflow, the production efficiency that has improved low permeability oil field, has reduced risk, makes low permeability oil field keep long term stable production.
Brief description of the drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Detailed description of the invention
Below in conjunction with drawings and Examples, the utility model is further described, but the utility model is not limited to these embodiment.
Embodiment 1
In Fig. 1, the three pipe ground layered water fillers of the present embodiment are connected and are formed by upper oil pipe 1, upper packer 2, reducer union 3, sleeve body 4, pump work cylinder 5, lower packet 6, level pressure bottom plug 7, setting of casing 8.
On upper oil pipe 1, install packer 2 by thread connection, upper oil pipe 1 is arranged in well casing 9, upper packer 2 is between upper oil pipe 1 and well casing 9, upper packer 2 plays the effect of sealing top water filling layer position, upper oil pipe 1 lower end has been threaded connection reducer union 3, in reducer union 3, be threaded connection sleeve body 4, on sleeve body 4, be processed with release water hole a, sleeve body 4 lower ends have been threaded connection setting of casing 8, the outer lower packet 6 that is provided with of setting of casing 8, setting of casing 8 is arranged in well casing 9, lower packet 6 is between setting of casing 8 and well casing 9, lower packet 6 plays sealing function, water filling layer position in the middle of forming one between upper packer 2 and lower packet 6, setting of casing 8 internal upper parts have been threaded connection pump work cylinder 5, the interior lower end of setting of casing 8 has been threaded connection level pressure bottom plug 7, level pressure bottom plug 7 is by setting of casing 8 lower end closed.Ground high-pressure hydraulic pump is delivered to water under high pressure inside and outside upper oil pipe 1 by oil pipe, and oil reservoir is injected by the oil recovery hole b of pressure break on release water hole a and well casing 9 in the gap of flowing through between sleeve body 4 and reducer union 3, and middle oil reservoir is carried out to moisturizing.
Claims (1)
1. a pipe ground layered water filler, it is characterized in that: be set up packer (2) at upper oil pipe (1) peripheral hardware, lower end arranges reducer union (3), sleeve body (4) is set in reducer union (3), on sleeve body (4), be processed with release water hole (a), sleeve body (4) lower end is provided with setting of casing (8), setting of casing (8) is outside equipped with lower packet (6), and setting of casing (8) internal upper part is provided with pump work cylinder (5), lower end is provided with level pressure bottom plug (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141727.7U CN203808954U (en) | 2014-03-27 | 2014-03-27 | Three-tube ground separated layer water injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420141727.7U CN203808954U (en) | 2014-03-27 | 2014-03-27 | Three-tube ground separated layer water injection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203808954U true CN203808954U (en) | 2014-09-03 |
Family
ID=51447727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420141727.7U Expired - Fee Related CN203808954U (en) | 2014-03-27 | 2014-03-27 | Three-tube ground separated layer water injection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203808954U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373098A (en) * | 2014-11-05 | 2015-02-25 | 中国石油天然气股份有限公司 | Fireflood layering electric ignition process pipe column |
| CN104389567A (en) * | 2014-11-21 | 2015-03-04 | 中国石油天然气股份有限公司 | Layered injection tubular column and layered injection method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
-
2014
- 2014-03-27 CN CN201420141727.7U patent/CN203808954U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104373098A (en) * | 2014-11-05 | 2015-02-25 | 中国石油天然气股份有限公司 | Fireflood layering electric ignition process pipe column |
| CN104373098B (en) * | 2014-11-05 | 2017-09-01 | 中国石油天然气股份有限公司 | A kind of fireflood is layered electric ignition process pipe string |
| CN104389567A (en) * | 2014-11-21 | 2015-03-04 | 中国石油天然气股份有限公司 | Layered injection tubular column and layered injection method |
| CN109322646A (en) * | 2017-07-31 | 2019-02-12 | 中国石油天然气股份有限公司 | A kind of separate injection tubing string and application method for flushing |
| CN109322646B (en) * | 2017-07-31 | 2023-10-31 | 中国石油天然气股份有限公司 | Separate injection pipe column for oil well water injection and use method |
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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: 20140903 Termination date: 20170327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |