CN108570317A - A kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage - Google Patents
A kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage Download PDFInfo
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- CN108570317A CN108570317A CN201710149122.0A CN201710149122A CN108570317A CN 108570317 A CN108570317 A CN 108570317A CN 201710149122 A CN201710149122 A CN 201710149122A CN 108570317 A CN108570317 A CN 108570317A
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- released
- low permeability
- water blocking
- permeability reservoir
- blocking damage
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- 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
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
- C09K8/524—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning organic depositions, e.g. paraffins or asphaltenes
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- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Colloid Chemistry (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses a kind of microemulsions released for LOW PERMEABILITY RESERVOIR water blocking damage, are grouped as by the group of following weight percent：10%~20% nonionic class surfactant, 10%~15% anion surfactant, 8%~15% stabilizer, 6%~10% auxiliary agent, 8% diesel oil, 32%~58% water.The microemulsion of the present invention released for LOW PERMEABILITY RESERVOIR water blocking damage, there is higher grease to dissolve each other ability, and oil-water two-phase interfaces tension is not present, and the water enchroachment (invasion) injury of low permeability reservoir near wellbore zone can be effectively treated, and oleic permeability restores >=90%.With the higher tolerance of salinity, the tolerance of salinity is in 20000mg/L or more.Other than it can release water enchroachment (invasion) injury, moreover it is possible to dissolve the gum asphalt of near wellbore zone precipitation, dissolution rate is in 20mg/L or more.The microemulsion of the present invention released for LOW PERMEABILITY RESERVOIR water blocking damage, can effectively prevent and release water blocking damage, utmostly protect oil-gas Layer.
Description
Technical field
The present invention relates to a kind of microemulsions released for LOW PERMEABILITY RESERVOIR water blocking damage, belong to LOW PERMEABILITY RESERVOIR mining operations neck
Domain.
Background technology
With the large-scale development of oil, middle and high infiltration oil reservoir is aqueous to be gradually risen, and domestic hypertonic reservoir comprehensive water cut exists
92% or more, oil development emphasis is shifted to LOW PERMEABILITY RESERVOIR.Low-permeability oil deposit leads to its reservoir hair since its pore throat diameter is tiny
Capillary action power is stronger, and there are the gaps in magnitude compared with middle and high infiltration oil reservoir.Once there is secondary water during mining operations
Intrusion oil well causes the lock pollution of near wellbore zone water under a certain pressure, it is difficult to restore by natural energy, causes oil well low yield, low
Liquid seriously affects the economic development in oil field.Current releasing system is released mainly for middle and high infiltration reservoir for low-permeability oil deposit
Effect is undesirable, and therefore, there is an urgent need to research and develop the water blocking damage of suitable low-permeability oil deposit to release system.
Invention content
For the above-mentioned prior art, the present invention provides a kind of microemulsions released for LOW PERMEABILITY RESERVOIR water blocking damage.
The present invention is achieved by the following technical solutions：
A kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage, is grouped as by the group of following weight percent：10%
~20% nonionic class surfactant, 10%~15% anion surfactant, 8%~15% stabilizer, 6%~10%
Auxiliary agent, 8% diesel oil, 32%~58% water.
It is (poly- that the nonionic class surfactant is selected from nonylphenol polyoxyethylene ether, octyl phenol polyoxyethylene ether, OP-10
Ethylene oxide octyl phenol ether -10), any one of APG1210 (alkyl glycosides).
The anion surfactant is selected from neopelex, cetyl benzenesulfonic acid sodium, dodecyl sulphur
Any one of sour sodium, sodium cetanesulfonate.
The stabilizer is selected from alkyl dimethyl betaine, alkyl dimethyl sulfoethyl glycine betaine, alkyl dimethyl sulphur third
Any one of base glycine betaine.The alkyl refers to the alkyl that carbon atom number is 12~18.
The auxiliary agent is selected from any one of ethyl alcohol, ethylene glycol, isopropanol.
The diesel oil is light diesel, 180 DEG C~370 DEG C of boiling point.
The water is sewage (solid concentration≤1mg/L) after the processing of clear water or salinity less than 30000mg/L.
It is described for LOW PERMEABILITY RESERVOIR water blocking damage release microemulsion preparation method, be：Each component is mixed, mixing,
To obtain the final product.Preferably, preparation method is as follows：At 0 DEG C~35 DEG C, auxiliary agent is added to the water, mixing (stirs evenly, mixing speed
20r/min)；Then, nonionic surfactant is added, mixing (stirs evenly, mixing speed reduces at this time, is with 5r/min
Preferably)；Anionic based surfactants are added, mixing (stirs evenly, mixing speed 5r/min)；Stabilizer, mixing (stirring is added
Uniformly, mixing speed 5r/min)；Be eventually adding diesel oil, mixing (stirring evenly, mixing speed 30r/min) to get.
The microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage, can be as the system for releasing LOW PERMEABILITY RESERVOIR water blocking damage
Agent is applied, and concrete application mode is:Assignment statistics processing operations liquid wastage first ,+10% wastage of wastage are (more than needed
Amount) it is microemulsion dosage.
The microemulsion of the present invention released for LOW PERMEABILITY RESERVOIR water blocking damage, there is higher grease to dissolve each other ability, do not deposit
In oil-water two-phase interfaces tension, the water enchroachment (invasion) injury of low permeability reservoir near wellbore zone can be effectively treated, oleic permeability restores >=90%.
With the higher tolerance of salinity, the tolerance of salinity is in 20000mg/L or more.The micro emulsion of the present invention released for LOW PERMEABILITY RESERVOIR water blocking damage
Liquid, it is outer in addition to water enchroachment (invasion) injury can be released, moreover it is possible to dissolve the gum asphalt that near wellbore zone is precipitated, dissolution rate 20mg/L with
On.The microemulsion of the present invention released for LOW PERMEABILITY RESERVOIR water blocking damage, can effectively prevent and release water blocking damage, maximum journey
Degree protection oil-gas Layer.
Specific implementation mode
With reference to embodiment, the present invention is further illustrated.
Involved instrument, reagent, material etc., are existing in the prior art unless otherwise noted in following embodiments
Conventional instrument, reagent, material etc., can be obtained by regular commercial sources.Involved experimental method in following embodiments, inspection
Survey method etc. is unless otherwise noted existing routine experiment method in the prior art, detection method etc..
Embodiment 1 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：10g nonionic surfactant nonylphenol polyoxyethylene ether, 10g detergent alkylates
Sodium sulfonate, 8g alkyl dimethyl betaines (alkyl refers to the alkyl that carbon atom number is 12), 6g ethyl alcohol, 8g light diesels, 58g
Water.
Preparation method is：Under room temperature, auxiliary agent is added to the water, is stirred evenly, mixing speed 20r/min；Then, it is added non-
Ionic surface active agent stirs evenly, mixing speed 5r/min；Anionic based surfactants are added, stir evenly, stirring speed
Spend 5r/min；Stabilizer is added, stirs evenly, mixing speed 5r/min；It is eventually adding diesel oil, is stirred evenly, mixing speed
30r/min is to get homogeneous transparent agent, and after testing, performance parameter is as follows：At 20 DEG C, to the solvability 21mg/L of colloid,
To oleic permeability recovery rate >=90%, the 30100mg/L of resistance to salinity of low-permeability oil deposit after water enchroachment (invasion).
Embodiment 2 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：15g nonionic surfactant nonylphenol polyoxyethylene ether, 12g detergent alkylates
Sodium sulfonate, (alkyl refers to the alkyl that carbon atom number is 12 to 10g alkyl dimethyl betaines, i.e.,：Dodecyl dimethyl beet
Alkali), 8g ethyl alcohol, 8g light diesels, 47g water.
Preparation method is：It is mixed under room temperature, obtains homogeneous transparent agent, as microemulsion, after testing, performance parameter
It is as follows：At 20 DEG C, to the solvability 28mg/L of colloid, to the oleic permeability recovery rate of low-permeability oil deposit after water enchroachment (invasion) >=
92%, the 25000mg/L of resistance to salinity.
Embodiment 3 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：20g nonionic surfactant nonylphenol polyoxyethylene ether, 15g detergent alkylates
Sodium sulfonate, 15g alkyl dimethyl betaines (alkyl refers to the alkyl that carbon atom number is 12), 10g ethyl alcohol, 8g light diesels, 32g
Water.
Preparation method is：It is mixed under room temperature, obtains homogeneous transparent agent, as microemulsion, after testing, performance parameter
It is as follows：At 20 DEG C, to the solvability 31mg/L of colloid, to the oleic permeability recovery rate of low-permeability oil deposit after water enchroachment (invasion) >=
95%, the 20000mg/L of resistance to salinity.
Embodiment 4 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：10g octyl phenol polyoxyethylene ether, 15g cetyl benzenesulfonic acid sodiums, 8g alkyl-dimethyls
Base azochlorosulfonate propyl lycine (alkyl refers to the alkyl that carbon atom number is 12), 10g ethylene glycol, 8g light diesels, 49g water.
Preparation method is：It is mixed under room temperature, obtains homogeneous transparent agent, as microemulsion.
Embodiment 5 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：20g nonionic class Surfactant OP -10,10g dodecyl sodium sulfates, 15g alkane
Base dimethyl sulfopropyl betaine (alkyl refers to the alkyl that carbon atom number is 16), 6g propyl alcohol, 8g light diesels, 41g water.
Preparation method is：It is mixed under room temperature, obtains homogeneous transparent agent, as microemulsion.
Embodiment 6 prepares the microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage
Group is grouped as and dosage is as follows：15g nonionic class surfactant A PG1210,15g sodium cetanesulfonates, 12g
Alkyl dimethyl sulfoethyl glycine betaine (alkyl refers to the alkyl that carbon atom number is 18), 6g ethylene glycol, 8g light diesels, 44g water
(sewage, solid concentration≤1mg/L after processing of the salinity less than 30000mg/L).
Preparation method is：It is mixed under room temperature, obtains homogeneous transparent agent, as microemulsion.
Example：Shengli Oil Field GNGN**X* wells, the geologic interpretation well reservoir permeability are 0.3-40 × 10-3μm2, it is hypotonic
Saturating oil well, new operation liquid measure 8m3/ d, 100% is aqueous.
According to the borehole logging tool interpretation results, which is oil-water common-layer, and the other oil wells of this block also have certain production
Oil mass, therefore analyze the well and be contaminated injury in drilling process.It is reported according to drilling well, which misses brill in drilling process
Well liquid 9m3.The well was constructed on December 7th, 2016, and live dosage 9.9m is determined according to microemulsion dosage3, live by micro emulsion
Liquid (preparation of embodiment 3) squeezes into processing interval.Liquid output 25m after driving a well3Left and right, oil production are stablized in 15m3/ d, significant effect.
Although above-mentioned be described the specific implementation mode of the present invention in conjunction with the embodiments, not the present invention is protected
The limitation of range, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art
The various modifications or changes that can be made need not be made the creative labor still within protection scope of the present invention.
Claims (9)
1. a kind of microemulsion released for LOW PERMEABILITY RESERVOIR water blocking damage, it is characterised in that：By the component of following weight percent
Composition：10%~20% nonionic class surfactant, 10%~15% anion surfactant, 8%~15% stabilizer,
6%~10% auxiliary agent, 8% diesel oil, 32%~58% water；
The nonionic class surfactant is selected from nonylphenol polyoxyethylene ether, octyl phenol polyoxyethylene ether, OP-10, APG1210
Any one of；
The anion surfactant be selected from neopelex, cetyl benzenesulfonic acid sodium, dodecyl sodium sulfate,
Any one of sodium cetanesulfonate；
The stabilizer is selected from alkyl dimethyl betaine, alkyl dimethyl sulfoethyl glycine betaine, alkyl dimethyl sulfopropyl sweet tea
Any one of dish alkali；The alkyl refers to the alkyl that carbon atom number is 12~18；
The auxiliary agent is selected from any one of ethyl alcohol, ethylene glycol, isopropanol.
2. the microemulsion according to claim 1 released for LOW PERMEABILITY RESERVOIR water blocking damage, it is characterised in that：The diesel oil
For light diesel, 180 DEG C~370 DEG C of boiling point.
3. the microemulsion according to claim 1 released for LOW PERMEABILITY RESERVOIR water blocking damage, it is characterised in that：The water is
Sewage after the processing of clear water or salinity less than 30000mg/L.
4. the microemulsion described in any one of claim 1 to 3 released for LOW PERMEABILITY RESERVOIR water blocking damage, feature exist
In：It is composed of the following components：10g nonylphenol polyoxyethylene ether, 10g neopelexes, 8g alkyl dimethyl betaines,
6g ethyl alcohol, 8g light diesels, 58g water.
5. the microemulsion described in any one of claim 1 to 3 released for LOW PERMEABILITY RESERVOIR water blocking damage, feature exist
In：It is composed of the following components：15g nonylphenol polyoxyethylene ether, 12g neopelexes, 10g alkyl dimethyl beets
Alkali, 8g ethyl alcohol, 8g light diesels, 47g water.
6. the microemulsion described in any one of claim 1 to 3 released for LOW PERMEABILITY RESERVOIR water blocking damage, feature exist
In：It is composed of the following components：20g nonylphenol polyoxyethylene ether, 15g neopelexes, 15g alkyl dimethyl beets
Alkali, 10g ethyl alcohol, 8g light diesels, 32g water.
7. the preparation method of the microemulsion according to any one of claims 1 to 6 released for LOW PERMEABILITY RESERVOIR water blocking damage,
It is characterized in that：Each component is mixed, mixing to get.
8. the preparation method of the microemulsion according to claim 7 released for LOW PERMEABILITY RESERVOIR water blocking damage, feature exist
In：At 0 DEG C~35 DEG C, auxiliary agent is added to the water, is stirred evenly, mixing speed 20r/min；Then, non-ionic surface is added
Activating agent stirs evenly, mixing speed 5r/min；Anionic based surfactants are added, stir evenly, mixing speed 5r/
min；Stabilizer is added, stirs evenly, mixing speed 5r/min；It is eventually adding diesel oil, is stirred evenly, mixing speed 30r/min,
To obtain the final product.
9. the microemulsion according to any one of claims 1 to 6 released for LOW PERMEABILITY RESERVOIR water blocking damage is releasing hypotonic oil
Hide the application in water blocking damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149122.0A CN108570317B (en) | 2017-03-13 | 2017-03-13 | Microemulsion for relieving water lock injury of low-permeability reservoir |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710149122.0A CN108570317B (en) | 2017-03-13 | 2017-03-13 | Microemulsion for relieving water lock injury of low-permeability reservoir |
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| Publication Number | Publication Date |
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| CN108570317A true CN108570317A (en) | 2018-09-25 |
| CN108570317B CN108570317B (en) | 2022-02-22 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376113A (en) * | 2019-07-29 | 2019-10-25 | 中国地质大学（北京） | A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid |
| CN113528099A (en) * | 2020-04-10 | 2021-10-22 | 中石化南京化工研究院有限公司 | Waterproof locking agent and preparation method thereof |
| CN113563861A (en) * | 2021-07-27 | 2021-10-29 | 中国石油大学(北京) | Microemulsion composition, nano emulsion, preparation method and application of nano emulsion, and fracturing fluid |
| CN114316935A (en) * | 2022-01-11 | 2022-04-12 | 盘锦鸿鼎油气技术服务有限公司 | Micro-emulsified acid blockage removing system and preparation method thereof |
| CN114891488A (en) * | 2022-05-27 | 2022-08-12 | 东营施普瑞石油工程技术有限公司 | Water lock injury treating agent and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110376113A (en) * | 2019-07-29 | 2019-10-25 | 中国地质大学（北京） | A kind of evaluation coal seam reservoirs water blocking damage method and water lock release liquid |
| CN113528099A (en) * | 2020-04-10 | 2021-10-22 | 中石化南京化工研究院有限公司 | Waterproof locking agent and preparation method thereof |
| CN113563861A (en) * | 2021-07-27 | 2021-10-29 | 中国石油大学(北京) | Microemulsion composition, nano emulsion, preparation method and application of nano emulsion, and fracturing fluid |
| CN113563861B (en) * | 2021-07-27 | 2022-12-23 | 中国石油大学(北京) | Microemulsion composition, nano emulsion, preparation method and application of nano emulsion, and fracturing fluid |
| CN114316935A (en) * | 2022-01-11 | 2022-04-12 | 盘锦鸿鼎油气技术服务有限公司 | Micro-emulsified acid blockage removing system and preparation method thereof |
| CN114891488A (en) * | 2022-05-27 | 2022-08-12 | 东营施普瑞石油工程技术有限公司 | Water lock injury treating agent and preparation method thereof |
| CN114891488B (en) * | 2022-05-27 | 2023-12-19 | 东营施普瑞石油工程技术有限公司 | Water lock injury treating agent and preparation method thereof |
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| CN108570317B (en) | 2022-02-22 |
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