CN107859507A - Improve the method for increasing of oil well single well productivity - Google Patents
Improve the method for increasing of oil well single well productivity Download PDFInfo
- Publication number
- CN107859507A CN107859507A CN201610840018.1A CN201610840018A CN107859507A CN 107859507 A CN107859507 A CN 107859507A CN 201610840018 A CN201610840018 A CN 201610840018A CN 107859507 A CN107859507 A CN 107859507A
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- CN
- China
- Prior art keywords
- well
- oil
- injection
- productivity
- stripper
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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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/584—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific surfactants
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/164—Injecting CO2 or carbonated water
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
- E21B43/166—Injecting a gaseous medium; Injecting a gaseous medium and a liquid medium
Abstract
The present invention provides a kind of method for increasing for improving oil well single well productivity, and the method for increasing of the raising oil well single well productivity includes：Step 1, suitable stripper well is selected；Step 2, the system of micro emulsion can be formed and to stripper well energization to stripper well injection；Step 3, to stripper well progress closing well reaction, meet the reaction of injection fluid and crude oil, ensure in the maximum amount of microemulsion system for being dissolved in injection of crude oil and energization system after fully reacting in reservoir；Step 4, opening well and making production.The method for increasing of the raising oil well single well productivity can dredge oil flow channel using micro emulsion and oil layer protection auxiliary agent; injury is released, reaches the purpose of volume increase, the extent of exfoliation of crude oil can be increased substantially; and by aiding in energization mode to increase the effective flowing of single well controlled reserves, improve well yield.
Description
Technical field
The present invention relates to oil field development technical field, especially relates to a kind of volume increase side for improving oil well single well productivity
Method.
Background technology
Oil field development is mainly exploited in a manner of water drive, polymer flooding etc., but the poorly efficient oil of more low yield in oil field development be present
Well.The problem of a kind of hypotonic, special hypotonic water-drive pool development block has difficult water injection, energy supplement not in time, causes individual well
Production capacity is low, and development efficiency is poor, have impact on the rate of oil production of whole development block；One kind has the high oil reservoir development mistake for coagulating oily feature
Cheng Zhong, generally ensure to exploit the mobility of Crude Oil, high energy consumption, exploiting economy by the way of electrical heating or other auxiliary heating
It is of poor benefits；There is the problem of thermal recovery efficiency is low, viscosity reducing viscosity is big in a kind of super―heavy oil, cause to develop undesirable；Some storages
The strong oil reservoir of layer sensitiveness is highly prone to outside fluid intrusion injury on stream causes single well productivity significantly to decline.
Single well productivity is improved, increase well yield is to improve the important way of oil field development efficiency, conventional using acidifying, pressure
It is mainly to reach the mesh that individual well increases production by way of dredging oil flow channel, increase near wellbore zone oil stream ability the yield increase such as to split
's.Such as Sun Huan springs et al. have invented a kind of method (CN for improving the hypotonic heavy crude reservoir single well productivity of ultra deep
201410064889.X), its major way is the mode for taking ultra deep low-permeability heavy oil reservoir long staged fracturing of horizontal well
Increase pit shaft and oil reservoir contact area, the mode for improving near wellbore zone oil and gas flow condition improves single well productivity；The human hairs such as Han Wei
Understanding a kind of low yield hyposmosis oil well heat from hydrogenation chemistry volume increase solution component (CN201210479737.7) its cardinal principle is
Microcrack is formed in reservoir deep using heat chemistry, improves oil flow channel.The above method a few class low yield inefficient wells for more than are opened
It is ineffective that hair improves single well productivity.For this we have invented a kind of method for increasing of new raising oil well single well productivity, solve
Above technical problem.
The content of the invention
It is an object of the invention to provide one kind can effectively employ near wellbore zone reserves, reach energization, the purpose of volume increase carries
The method for increasing of high oil well single well productivity.
The purpose of the present invention can be achieved by the following technical measures：The method for increasing of oil well single well productivity is improved, this is carried
The method for increasing of high oil well single well productivity includes：Step 1, suitable stripper well is selected；Step 2, energy is injected to stripper well
Enough form the system of micro emulsion and to stripper well energization；Step 3, to stripper well carry out closing well reaction, meet injection fluid with
The reaction of crude oil, ensure in the maximum amount of microemulsion system for being dissolved in injection of crude oil and energization system after fully reacting in reservoir；
Step 4, opening well and making production.
The purpose of the present invention can be also achieved by the following technical measures：
In step 1, the stripper well of selection develops ill oil well individual well for water-drive pool, has high solidifying oil or high
The oil well of the oil well of viscosity heavy oil development difficulty, the reservoir with strong sensitivity.
In step 2, when injecting microemulsion system, the body based on concentrated surfactant is injected to stripper well
System, to form micro emulsion in the reservoir crude oil in situ with reservoir, injection rate is not less than 200 times of former individual well Liquid output.
In step 2, the microemulsion system of injection includes surfactant, wherein cosurfactant, surfactant bag
Include petroleum sulfonate surfactant, alkyl sulfonate surfactants, soap surfactant, polyether surface active
Agent, non-female amphoteric surfactant these be suitable for surfactant oil displacement；Cosurfactant include propyl alcohol, butanol,
These alcohols of isopropanol.
In step 2, under special sensitive reservoir condition, the microemulsion system of injection also includes polyquaternium or quaternary ammonium salt
Clay stabilizer；Wherein, polyquaternary amine salt is poly- 2- hydroxyls -1,3- propylidene ammonium chloride, diallyl dimethyl ammoniumchloride
Or poly- 2- hydroxyls -1,3- propylidene alkyl dimethyl ammonium chlorides；Quaternary ammonium salt is cetyl trimethylammonium bromide or dodecyl two
Methyl-benzyl ammonium chloride.
In step 2, nitrogen, these gases of carbon dioxide are injected to stripper well energization, and injection length is micro- in injection
Before newborn system, or inject with microemulsion system interval, injection rate is not less than 30 times of individual well Liquid output.
In step 3, the closing well reaction time evaluates the determination of formation of microemulsion time according to lab simulation, specific to different wells
The oil sample of group mixes with volume increase system simulation stratum condition, or is mixed using stratum oil-sand with system, observation micro emulsion emulsification shape
Into determining the closed-in time.
The method for increasing of raising oil well single well productivity in the present invention, ill oil well is developed particular for water-drive pool
Individual well, reservoir with the difficult oil well of high solidifying oil or high viscosity heavy oil development, with strong sensitivity oil well raising production capacity,
It aids in implementing the mode of other energizations, increase individual well production using the strong washing oil ability of micro emulsion, ultralow interfacial tension and to individual well
The method of energy；The solidifying oil of height or super―heavy oil stripper well are improved in a manner of micro emulsion aids in pit shaft and near wellbore zone pour point depression (viscosity reduction)
Mobility increases single well productivity.On the one hand oil flow channel can be dredged using micro emulsion and oil layer protection auxiliary agent, releases injury, reach increasing
The purpose of production；On the other hand, the extent of exfoliation of crude oil can be increased substantially using the strong washing oil ability of micro emulsion, and by aiding in increasing
Energy mode increases the effective flowing of single well controlled reserves, improves well yield.
Brief description of the drawings
Fig. 1 is the flow chart of a specific embodiment of the method for increasing of the raising oil well single well productivity of the present invention.
Embodiment
For enable the present invention above and other objects, features and advantages become apparent, it is cited below particularly go out preferable implementation
Example, and coordinate shown in accompanying drawing, it is described in detail below.
As shown in figure 1, Fig. 1 is the flow chart of the method for increasing of the raising oil well single well productivity of the present invention.
Step 101, suitable stripper well is selected.The well is that water-drive pool develops ill oil well individual well, has height
The oil well of the oil well of solidifying oil or high viscosity heavy oil development difficulty, the reservoir with strong sensitivity.
Step 102, the system of micro emulsion can be formed and to stripper well energization to stripper well injection.To the well inject with
System based on concentrated surfactant, to form micro emulsion in the reservoir crude oil in situ with reservoir, injection rate is not less than original
200 times of individual well Liquid output, displacement efficiency is improved, improve recovery percent of reserves.The system that micro emulsion can be formed is lived including surface
Property agent, cosurfactant, wherein surfactant include be not limited to petroleum sulfonate surfactant, alkylsulfonate surface
Activating agent, soap surfactant, polyethet surfactant, non-female amphoteric surfactant etc. are suitable for displacement of reservoir oil use
Surfactant；Cosurfactant includes being not limited to the alcohols such as propyl alcohol, butanol, isopropanol.
The system that micro emulsion can be formed also includes being not limited to polyquaternium or quaternary ammonium under special sensitive reservoir condition
Salt clay stabilizer；The polyquaternary amine salt refers to and is not limited to poly- 2- hydroxyls -1,3- propylidene ammonium chloride, polydiene propyl group
Alkyl dimethyl ammonium chloride or poly- 2- hydroxyls -1,3- propylidene alkyl dimethyl ammonium chlorides；The quaternary ammonium salt refers to and is not limited to hexadecane
Base trimethylammonium bromide or dodecyl benzyl dimethyl ammonium chloride；
To stripper well energization, the gas such as injection nitrogen, carbon dioxide, injection can before microemulsion system is injected, or
Injected with microemulsion system interval, injection rate is not less than 30 times of individual well Liquid output.
Step 103, closing well reacts, and carries out closing well reaction to individual well, meets the reaction of injection fluid and crude oil, ensures abundant
In the maximum amount of microemulsion system for being dissolved in injection of crude oil and energization system after reaction in reservoir.The closing well reaction time can root
Determined according to the lab simulation evaluation formation of microemulsion time, increase production system simulated formation specific to the oil sample and this patent of different well groups
Under the conditions of mix, or mixed with system using stratum oil-sand, observe micro emulsion and emulsify to be formed, determine the closed-in time.
Step 104, opening well and making production.
The present invention develops ill oil well individual well for water-drive pool, has high solidifying oil or high viscosity heavy oil development difficult
Oil well, the oil well of reservoir with strong sensitivity can effectively employ near wellbore zone reserves, can reach energization, the purpose of volume increase.
Ill oil well individual well, which is developed, particular for water-drive pool effectively solves the problems, such as development process energy supplement difficulty；Special pin
To effectively solving high solidifying oil or high viscosity viscous crude stratum, pit shaft and storage with the difficult oil well of high solidifying oil or high viscosity heavy oil development
During fortune the problem of mobility.
Claims (7)
1. improve the method for increasing of oil well single well productivity, it is characterised in that the method for increasing of the raising oil well single well productivity includes：
Step 1, suitable stripper well is selected；
Step 2, the system of micro emulsion can be formed and to stripper well energization to stripper well injection；
Step 3, closing well reaction is carried out to stripper well, meets the reaction of injection fluid and crude oil, ensure reservoir after fully reaction
In the maximum amount of microemulsion system for being dissolved in injection of crude oil and energization system in；
Step 4, opening well and making production.
2. the method for increasing according to claim 1 for improving oil well single well productivity, it is characterised in that in step 1, selection
Stripper well develop ill oil well individual well for water-drive pool, there is the difficult oil of high solidifying oil or high viscosity heavy oil development
Well, have strong sensitivity reservoir oil well.
3. the method for increasing according to claim 1 for improving oil well single well productivity, it is characterised in that in step 2, noting
When entering microemulsion system, the system based on concentrated surfactant is injected to stripper well, with reservoir original position and reservoir
Crude oil form micro emulsion, injection rate is not less than 200 times of former individual well Liquid output.
4. the method for increasing according to claim 1 for improving oil well single well productivity, it is characterised in that in step 2, injection
Microemulsion system include surfactant, cosurfactant, wherein surfactant include petroleum sulfonate surfactant,
Alkyl sulfonate surfactants, soap surfactant, polyethet surfactant, non-female amphoteric surfactant
These are suitable for surfactant oil displacement；Cosurfactant includes propyl alcohol, butanol, isopropanol these alcohols.
5. the method for increasing according to claim 4 for improving oil well single well productivity, it is characterised in that in step 2, in spy
Under different sensitive reservoir condition, the microemulsion system of injection also includes polyquaternium or quaternary ammonium salt clay stabilizer；Wherein, polyquaternary amine
Salt is poly- 2- hydroxyls -1,3- propylidene ammonium chloride, diallyl dimethyl ammoniumchloride or poly- 2- hydroxyls -1,3- propylidene two
Ammonio methacrylate；Quaternary ammonium salt is cetyl trimethylammonium bromide or dodecyl benzyl dimethyl ammonium chloride.
6. the method for increasing according to claim 1 for improving oil well single well productivity, it is characterised in that in step 2, injection
These gases of nitrogen, carbon dioxide to stripper well energization, injection length be before microemulsion system is injected, or with micro emulsion body
System's interval injection, injection rate are not less than 30 times of individual well Liquid output.
7. the method for increasing according to claim 1 for improving oil well single well productivity, it is characterised in that in step 3, closing well
Reaction time evaluates the determination of formation of microemulsion time according to lab simulation, specific to oil sample and the volume increase system simulation of different well groups
Mix under formation condition, or mixed using stratum oil-sand with system, observation micro emulsion emulsifies to be formed, and determines the closed-in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840018.1A CN107859507A (en) | 2016-09-22 | 2016-09-22 | Improve the method for increasing of oil well single well productivity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610840018.1A CN107859507A (en) | 2016-09-22 | 2016-09-22 | Improve the method for increasing of oil well single well productivity |
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| Publication Number | Publication Date |
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| CN107859507A true CN107859507A (en) | 2018-03-30 |
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| CN201610840018.1A Pending CN107859507A (en) | 2016-09-22 | 2016-09-22 | Improve the method for increasing of oil well single well productivity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410439A (en) * | 2018-04-25 | 2018-08-17 | 南阳忠兴石油工程技术服务有限公司 | A kind of method of gel foam and microemulsions in situ combination application oil well production increasing |
| CN108728076A (en) * | 2018-05-29 | 2018-11-02 | 北京大德广源石油技术服务有限公司 | Micro-emulsion nano fracturing yield increasing agent and preparation method thereof |
| CN109289695A (en) * | 2018-09-26 | 2019-02-01 | 天津亿利科能源科技发展股份有限公司 | A kind of carboxylic acid surfactant and its preparation method and application |
| CN110984933A (en) * | 2019-12-02 | 2020-04-10 | 中国石油大学(北京) | Reinforced multiphase composite profile control and flooding method for oil field fly ash in ultra-high water-cut period |
| CN113202451A (en) * | 2021-04-12 | 2021-08-03 | 中国地质大学（武汉） | Calculation method for injection amount of in-situ generated middle-phase microemulsion washing oil system |
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| US20110303414A1 (en) * | 2010-06-14 | 2011-12-15 | Baker Hughes Incorporated | Method for Improving the Clean-Up of Emulsified Acid Fluid Systems |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108410439A (en) * | 2018-04-25 | 2018-08-17 | 南阳忠兴石油工程技术服务有限公司 | A kind of method of gel foam and microemulsions in situ combination application oil well production increasing |
| CN108410439B (en) * | 2018-04-25 | 2020-04-10 | 南阳忠兴石油工程技术服务有限公司 | Method for increasing production of oil well by combining gel foam and in-situ microemulsion |
| CN108728076A (en) * | 2018-05-29 | 2018-11-02 | 北京大德广源石油技术服务有限公司 | Micro-emulsion nano fracturing yield increasing agent and preparation method thereof |
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| CN109289695A (en) * | 2018-09-26 | 2019-02-01 | 天津亿利科能源科技发展股份有限公司 | A kind of carboxylic acid surfactant and its preparation method and application |
| CN110984933A (en) * | 2019-12-02 | 2020-04-10 | 中国石油大学(北京) | Reinforced multiphase composite profile control and flooding method for oil field fly ash in ultra-high water-cut period |
| CN110984933B (en) * | 2019-12-02 | 2020-09-01 | 中国石油大学(北京) | Reinforced multiphase composite profile control and flooding method for oil field fly ash in ultra-high water-cut period |
| CN113202451A (en) * | 2021-04-12 | 2021-08-03 | 中国地质大学（武汉） | Calculation method for injection amount of in-situ generated middle-phase microemulsion washing oil system |
| CN113202451B (en) * | 2021-04-12 | 2022-06-21 | 中国地质大学（武汉） | Calculation method for injection amount of in-situ generated middle-phase microemulsion washing oil system |
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Application publication date: 20180330 |