CN107355204B - One kind, which is exempted to survey, adjusts constant current with water regulating valve - Google Patents
One kind, which is exempted to survey, adjusts constant current with water regulating valve Download PDFInfo
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- CN107355204B CN107355204B CN201710635334.XA CN201710635334A CN107355204B CN 107355204 B CN107355204 B CN 107355204B CN 201710635334 A CN201710635334 A CN 201710635334A CN 107355204 B CN107355204 B CN 107355204B
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- balance plate
- survey
- constant current
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 28
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000005484 gravity Effects 0.000 claims description 2
- 238000002347 injection Methods 0.000 abstract description 20
- 239000007924 injection Substances 0.000 abstract description 20
- 238000012360 testing method Methods 0.000 abstract description 3
- 239000003129 oil well Substances 0.000 abstract description 2
- 235000020681 well water Nutrition 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 33
- 239000011229 interlayer Substances 0.000 description 5
- 239000012530 fluid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241001672694 Citrus reticulata Species 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002349 well water Substances 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
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/06—Valve arrangements for boreholes or wells in wells
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)
- Safety Valves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
Exempting to survey the invention discloses one kind adjusts constant current with water regulating valve.Regulating valve is mainly made of valve body, supporter, balance plate, package, spring, adjustment means.The present invention is designed according to mechanical balance principle and oil nozzle pressure difference relationship, control valve is placed in water injection well, it will drive adjustment means when balance plate discontinuity equalization to move up and down, it can make the water flow definite value that oil reservoir is flowed into from water injection well, even if the despite pressure fluctuations of water injection well and oil reservoir on not influencing flow.The control valve is when reducing the workloads such as test, adjusting, it also at least can be used to improve vertical well, inclined shaft, horizontal well multilayer segment equalization water injection capacity, postpone the oil well water breakthrough time, weaken different reservoir physical difference bring water cone degree, thus improves water filling success rate and oil recovery factor and oilfield economic benefit.
Description
Technical field
The present invention relates to the regulating valves that control injection water in oil field flows into stratum.Exempt to survey more particularly, to one kind and adjusts perseverance
Stream matches water regulating valve.The valve at least can be used to improve vertical well, inclined shaft, horizontal well multilayer segment equalization water injection capacity.
Background technique
Oil-field flooding is to guarantee formation pressure, realizes oil field high yield, stable yields, improves Development Response of Oilfield and improves crude oil and adopts
The effective means of yield.But since physical properties of fluids difference, interlayer heterogeneity etc. can make injection water exist between each reservoir of oil reservoir
Coning occurs for oil reservoir, finally breaks through entire oil reservoir and enters oil well and is plucked out of.In order to solve the problems, such as interlayer contradiction bring water cone, oil
Field worker usually uses eccentric water allocater, and the flow of injection water is distributed using separate zone waterflooding technology, which generally requires
Fine injection is realized in a series of operations such as layering, test, allotment.The series operation needs real-time monitoring multi-zone flow regulating flow,
Complex process, and cannot continue to work normally if electronic instrument breaks down.
For this purpose, in conjunction with mechanics equation of equilibrium and oil nozzle flow differential pressure relation formula, designs one kind and exempt to survey and constant current is adjusted to match
Water regulating valve.The valve can overcome injection well and formation pressure fluctuation problem, constant flow water filling be realized, to reduce workload.
Summary of the invention
The present invention, which provides one kind and exempts to survey, adjusts constant current with water regulating valve, which has movable link, can according to injection well with
And reservoir pressure variation automatic adjustment, so that the water flow on injection stratum is definite value, thus balanced grease promotes interface, delay oil
The well water breakthrough time weakens different reservoir physical difference bring water cone consequence.
In one embodiment, one kind, which is exempted to survey, adjusts constant current with water regulating valve, which is characterized in that it specifically includes that valve body
(1), supporter (2), balance plate (3) three parts.Valve body (1) side is equipped with entrance (101), bottom is equipped with outlet oil nozzle (102),
Top is equipped with pilot channel (4), and entrance (101) and outlet oil nozzle (102) are respectively used to make to inject water inflow and outflow regulating valve, and
Pilot channel (4) introduces chamber (5) for that will fill the water well pressure；Supporter (2) is located inside valve body (1) for spring
(302) support is provided；Balance plate (3) is located inside supporter, thereon separately below by different pressure.
Balance plate (3) upper surface is connected with package (301), and lower surface is connected with spring (302), lower surface
Center is additionally provided with adjustment means (303), and adjustment means (303) lower end is cone.It, can band when balance plate (3) stress lack of equilibrium
Dynamic adjustment means (303) move up and down.
The other end of the package (301) connects on valve body (1), and package (301) is used for chamber (5) and flow chamber
(6) it separates.
In another embodiment, one kind, which is exempted to survey, adjusts constant current with water regulating valve, which is characterized in that it specifically includes that valve body
(1), supporter (2), balance plate (3) three parts.(1) side of valve body is equipped with entrance (101), another side is equipped with outlet
Oil nozzle (102), top are equipped with pilot channel (4), and entrance (101) and outlet oil nozzle (102) are respectively used to that injection water flow is made to become a mandarin
Regulating valve out, and pilot channel (4) introduce chamber (5) for that will fill the water well pressure；Supporter (2) is located inside valve body (1) and uses
In to spring (302) offer support；Balance plate (3) is located inside supporter, thereon separately below by different pressure.
In this embodiment, adjustment means (303) lower end is set as circular arc sheet and is close to export the valve above oil nozzle (102)
Body (1) inner wall.
Advantage for present invention: control valve is equipped with adjustment means (303), when water filling well pressure and reservoir pressure wave
When dynamic, adjustment means (303) can move up and down and control the size that water body enters outlet oil nozzle (102) channel, so that pressure
Changing does not influence injection water flow, i.e., injection water flow is always maintained at constant；And the control valve does not need tripping in cable, electricity
The power tools such as sub- equipment do not need the job steps such as test, adjustment yet, can save workload and time.
Detailed description of the invention
Fig. 1 is the partial sectional view that the present invention is used in straight well.
Fig. 2, which is that the present invention is a kind of, to exempt to survey the first embodiment sectional view for adjusting constant current to match water regulating valve.
Fig. 3, which is that the present invention is a kind of, to exempt to survey the second embodiment sectional view for adjusting constant current to match water regulating valve.
Each description of symbols of the figures above:
A, oil reservoir；B, interlayer；C, casing；D, packer；E, oil pipe；F, exempting to survey adjusts constant current with water regulating valve；G, pit shaft；h,
Water flowing direction；1, valve body；101, entrance；102, oil nozzle is exported；2, supporter；3, balance plate；301, package；302, spring；
303, adjustment means；4, pilot channel；5, chamber；6, flow chamber；7, annular space.
Specific embodiment
Below with reference to each attached drawing, the invention will be further described.
Fig. 1 is the work partial schematic diagram that the present invention is used in vertical bore.Casing (c), oil pipe (e) pass perpendicularly through oil
Layer (a) and interlayer (b), while casing (c) and oil pipe (e) will form annular space (7), packer (d) be added in annular space (7), and seal
Every the position face interlayer (b) of device (d).Flow channel is equipped on casing (c) and oil pipe (e), by oil reservoir (a) and pit shaft (g)
Communication is got up.The water body injected from ground is flowed along water flowing direction (h), and ring is entered after regulating valve (f) and oil pipe (c)
Empty (7), and eventually enter into oil reservoir (a).
Fig. 2, which is that the present invention is a kind of, to exempt to survey the first the embodiment diagrammatic cross-section for adjusting constant current to match water regulating valve.Mainly by
Valve body (1), supporter (2), balance plate (3) three parts composition.Valve body (1) side is equipped with entrance (101), and entrance (101) is circle
Shape, valve body (1) bottom are equipped with outlet oil nozzle (102), and most water in water injection well can enter flow chamber through entrance (101)
(6), annular space (7) then by outlet oil nozzle (102) are flowed into；Supporter (2) be uncovered cylindrical body, bottom open circular hole convenient for fluid from
Flow chamber (6) flows into, and supporter (2) can also provide support to spring (302)；Balance plate (3) is wafer type, is located at supporter
(2) internal, balance plate (3) upper surface is connect with package (301), balance plate (3) lower surface and spring (302), adjustment means
(303) it is connected；Adjustment means (303) lower end is cone, is just being aligned with outlet oil nozzle (102)；It is formed inside package (301)
Chamber (5), the fraction water in water injection well can enter chamber (5) through pilot channel (4).
It should be understood that supporter (2) aperture not necessarily circular hole, can be any possible shape.
It should be noted that the number of spring is two not necessarily shown in figure, spring can change other any energy into
The component (such as spring leaf) and their any combination of power are enough provided.
Fig. 3, which is that the present invention is a kind of, to exempt to survey second of embodiment diagrammatic cross-section for adjusting constant current to match water regulating valve.Mainly by
Valve body (1), supporter (2), balance plate (3) three parts composition.(1) side of valve body is equipped with entrance (101), entrance (101)
For circle, valve body (1) another side is equipped with outlet oil nozzle (102), and most water in water injection well can enter through entrance (101)
Flow chamber (6), then annular space (7) are flowed by outlet oil nozzle (102)；Supporter (2) is uncovered cylindrical body, and bottom is equipped with circular hole just
It is flowed into fluid from flow chamber (6), and supporter (2) can also provide support to spring (302)；Balance plate (3) is wafer type, if
Internal in supporter (2), balance plate (3) upper surface is connect with package (301), balance plate (3) lower surface and spring (302), tune
Section component (303) is connected；Adjustment means (303) lower end is circular arc sheet；Chamber (5) are formed inside package (301), water injection well
In fraction water can through pilot channel (4) enter chamber (5).
It should be understood that for convenience of the understanding of related fields researcher, both the above case study on implementation only illustrates one
A the case where exporting and outlet is located at valve body (1) bottom and side, but outlet number and outlet port can appear in
Any reasonable place, these belong to claim of the invention.
The working principle of the invention is illustrated in conjunction with Fig. 1 below.Water pressure in water injection well is P1, by pilot channel
(4) balance plate (3) upper surface is acted on after entering chamber (5), direction is downward；Water is after entrance (101) enter flow chamber (6)
Pressure is P2, balance plate (3) lower surface is acted on, direction is upward；The inner water of flow chamber (6) enters ring through outlet oil nozzle (102)
Pressure after empty (7) is P3。
Balance plate (3) mechanical balance formula are as follows:
G+P1A-P2A-KX=0 (formula 1)
Balanced relationship between flow chamber (6) and annular space (7) are as follows:
P2-P3=KυρQ2(formula 2)
Wherein:
The sum of G-balance plate (3) and adjustment means (303) gravity, N；
The area of A-balance plate (3), mm2；
P1- water filling well pressure, Mpa；
P2- flowing chamber pressure, Mpa；
P3The pressure of-oil reservoir, Mpa；
K-the elastic coefficient, N/mm；
X-spring displacement, mm；
Kυ- oil nozzle constant；
ρ-water density；
Flow of the Q-water Jing Guo regulating valve；
Simultaneous formula 1 and formula 2 can obtain:
It can be obtained according to formula (4), pressure difference △ P=(P1–P3) variation when, elastic force KX is corresponding to be adjusted；According to formula
(3) and oil nozzle constant Kυ, water density p be constant, can obtain the flow Q of water during regulating valve work is a steady state value.
Claims (6)
- Adjust constant current with water regulating valve 1. one kind is exempted to survey, it is characterised in that: it includes valve body (1), supporter (2), balance plate (3) three A part；Valve body (1) is equipped with entrance (101) and flows into for water body, and outlet oil nozzle (102) is flowed out for water body, pilot channel (4) for well pressure introduction chamber room (5) will to be filled the water；Supporter (2) is located at valve body (1) inside, for giving spring (302) to provide branch Support；Balance plate (3) is located at supporter (2) inside, and upper surface connects package (301), lower surface connecting spring (302) and adjusting structure Part (303), for obtaining the pressure of chamber (5) and flow chamber (6)；Balance plate (3) mechanical balance formula are as follows:G+P1A-P2A-KX=0 (formula 1)Balanced relationship between flow chamber (6) and annular space (7) are as follows:P2-P3=KυρQ2(formula 2)Wherein:The sum of G-balance plate (3) and adjustment means (303) gravity, N；The area of A-balance plate (3), mm2；P1- water filling well pressure, Mpa；P2- flowing chamber pressure, Mpa；P3The pressure of-oil reservoir, Mpa；K-the elastic coefficient, N/mm；X-spring displacement, mm；Kυ- oil nozzle constant；ρ-water density；Flow of the Q-water Jing Guo regulating valve；Simultaneous formula 1 and formula 2 can obtain:Package (301) upper end is connected on valve body (1), under terminate at balance plate (3) upper surface, for by chamber (5) and Flow chamber (6) interior water body separates.
- Adjust constant current with water regulating valve 2. one kind according to claim 1 is exempted to survey, it is characterised in that: the outlet oil nozzle (102) it is located at valve body (1) bottom and side, and quantity is greater than or equal to 1.
- Adjust constant current with water regulating valve 3. one kind according to claim 1 is exempted to survey, it is characterised in that: the entrance (101) Section is round or other arbitrary shapes, and quantity is greater than or equal to 1.
- Adjust constant current with water regulating valve 4. one kind according to claim 1 is exempted to survey, it is characterised in that: the spring (302) is right Balance plate (3) provides upward elastic force.
- Adjust constant current with water regulating valve 5. one kind according to claim 1 is exempted to survey, it is characterised in that: the adjustment means (303) lower end is cone or circular arc sheet.
- Adjust constant current with water regulating valve 6. one kind according to claim 1 is exempted to survey, it is characterised in that: the balance plate (3) by It will drive adjustment means (303) when power imbalance to move up and down, adjustment means (303) can change water body and enter when moving up and down The size in mouth oil nozzle (102) channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635334.XA CN107355204B (en) | 2017-07-30 | 2017-07-30 | One kind, which is exempted to survey, adjusts constant current with water regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635334.XA CN107355204B (en) | 2017-07-30 | 2017-07-30 | One kind, which is exempted to survey, adjusts constant current with water regulating valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107355204A CN107355204A (en) | 2017-11-17 |
| CN107355204B true CN107355204B (en) | 2019-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710635334.XA Active CN107355204B (en) | 2017-07-30 | 2017-07-30 | One kind, which is exempted to survey, adjusts constant current with water regulating valve |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110500072B (en) * | 2019-09-11 | 2020-08-04 | 中国石油大学(北京) | Wave-type water injection device and water injection system |
| CN117145437B (en) * | 2023-08-31 | 2024-05-07 | 成都北方石油勘探开发技术有限公司 | Acidizing fluid injection tool of accuse water completion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3974876A (en) * | 1975-09-15 | 1976-08-17 | Taylor Julian S | Downhole fluid flow regulator |
| CN2282065Y (en) * | 1996-12-04 | 1998-05-20 | 营口市仪表厂 | Adjustable constant flow water injection mandrel |
| CN2557695Y (en) * | 2002-04-16 | 2003-06-25 | 中国三江航天集团远方科技开发公司 | Constant current water injection well choke |
| CN2641285Y (en) * | 2003-08-11 | 2004-09-15 | 中国三江航天集团远方科技开发公司 | Constant flow water tap |
| CN2716499Y (en) * | 2004-08-12 | 2005-08-10 | 郭建晔 | Automatic adjustment constant water nozzle |
| CN203321466U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Mechanical self-regulating flow stabilizing device |
-
2017
- 2017-07-30 CN CN201710635334.XA patent/CN107355204B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3974876A (en) * | 1975-09-15 | 1976-08-17 | Taylor Julian S | Downhole fluid flow regulator |
| CN2282065Y (en) * | 1996-12-04 | 1998-05-20 | 营口市仪表厂 | Adjustable constant flow water injection mandrel |
| CN2557695Y (en) * | 2002-04-16 | 2003-06-25 | 中国三江航天集团远方科技开发公司 | Constant current water injection well choke |
| CN2641285Y (en) * | 2003-08-11 | 2004-09-15 | 中国三江航天集团远方科技开发公司 | Constant flow water tap |
| CN2716499Y (en) * | 2004-08-12 | 2005-08-10 | 郭建晔 | Automatic adjustment constant water nozzle |
| CN203321466U (en) * | 2013-06-05 | 2013-12-04 | 中国石油天然气股份有限公司 | Mechanical self-regulating flow stabilizing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107355204A (en) | 2017-11-17 |
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| CB03 | Change of inventor or designer information |
Inventor after: Li Haitao Inventor after: Cui Xiaojiang Inventor after: Liu Yigang Inventor after: Zhang Yunbao Inventor after: Zhang Nan Inventor after: Quan Li Inventor after: Zhao Jing Inventor after: Liu Feihang Inventor before: Li Haitao Inventor before: Cui Xiaojiang Inventor before: Zhang Nan Inventor before: Quan Li Inventor before: Zhao Jing Inventor before: Liu Feihang |
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