CN109321225A - CO suitable for high-temperature high-salinity oil reservoir2Foaming agent system and preparation method thereof - Google Patents
CO suitable for high-temperature high-salinity oil reservoir2Foaming agent system and preparation method thereof Download PDFInfo
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- CN109321225A CN109321225A CN201811010426.XA CN201811010426A CN109321225A CN 109321225 A CN109321225 A CN 109321225A CN 201811010426 A CN201811010426 A CN 201811010426A CN 109321225 A CN109321225 A CN 109321225A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000003756 stirring Methods 0.000 claims abstract description 41
- 239000004088 foaming agent Substances 0.000 claims abstract description 38
- 239000006260 foam Substances 0.000 claims abstract description 31
- 239000004094 surface-active agent Substances 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 8
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 6
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 6
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 claims abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 41
- 150000003839 salts Chemical class 0.000 claims description 27
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 24
- 239000002904 solvent Substances 0.000 claims description 21
- 239000011259 mixed solution Substances 0.000 claims description 19
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 18
- 239000013078 crystal Substances 0.000 claims description 18
- 235000019441 ethanol Nutrition 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 18
- 229960004756 ethanol Drugs 0.000 claims description 17
- FYSNRJHAOHDILO-UHFFFAOYSA-N thionyl chloride Chemical compound ClS(Cl)=O FYSNRJHAOHDILO-UHFFFAOYSA-N 0.000 claims description 16
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 claims description 14
- 238000006243 chemical reaction Methods 0.000 claims description 13
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- OVARTBFNCCXQKS-UHFFFAOYSA-N propan-2-one;hydrate Chemical compound O.CC(C)=O OVARTBFNCCXQKS-UHFFFAOYSA-N 0.000 claims description 13
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 12
- 238000010792 warming Methods 0.000 claims description 12
- IEQAICDLOKRSRL-UHFFFAOYSA-N 2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-[2-(2-dodecoxyethoxy)ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethanol Chemical compound CCCCCCCCCCCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCOCCO IEQAICDLOKRSRL-UHFFFAOYSA-N 0.000 claims description 10
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 10
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 9
- QRMLKVVWCJUMPR-UHFFFAOYSA-N BrCC[Na] Chemical compound BrCC[Na] QRMLKVVWCJUMPR-UHFFFAOYSA-N 0.000 claims description 8
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 8
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 8
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 7
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 6
- 239000001110 calcium chloride Substances 0.000 claims description 6
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 6
- 239000000243 solution Substances 0.000 claims description 6
- 238000005292 vacuum distillation Methods 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 5
- 229960000935 dehydrated alcohol Drugs 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 5
- 239000001103 potassium chloride Substances 0.000 claims description 5
- 235000011164 potassium chloride Nutrition 0.000 claims description 5
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 5
- 235000011152 sodium sulphate Nutrition 0.000 claims description 5
- LIKFHECYJZWXFJ-UHFFFAOYSA-N dimethyldichlorosilane Chemical compound C[Si](C)(Cl)Cl LIKFHECYJZWXFJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006210 lotion Substances 0.000 claims description 4
- 230000004048 modification Effects 0.000 claims description 4
- 238000012986 modification Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 claims description 4
- 238000003786 synthesis reaction Methods 0.000 claims description 4
- 230000006837 decompression Effects 0.000 claims 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 229940051841 polyoxyethylene ether Drugs 0.000 claims 1
- 229920000056 polyoxyethylene ether Polymers 0.000 claims 1
- 230000005465 channeling Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 230000002265 prevention Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 39
- 238000011084 recovery Methods 0.000 description 10
- 238000006073 displacement reaction Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000005046 Chlorosilane Substances 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 description 1
- 229910001626 barium chloride Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical class ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 description 1
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- VDGJOQCBCPGFFD-UHFFFAOYSA-N oxygen(2-) silicon(4+) titanium(4+) Chemical compound [Si+4].[O-2].[O-2].[Ti+4] VDGJOQCBCPGFFD-UHFFFAOYSA-N 0.000 description 1
- 238000004391 petroleum recovery Methods 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Classifications
-
- 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
- C09K8/594—Compositions used in combination with injected gas, e.g. CO2 orcarbonated gas
Landscapes
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Abstract
The invention discloses CO suitable for a high-temperature high-salinity reservoir2Foamer system and method for preparing the same, the CO2The foaming agent system comprises 0.01-0.30 wt% of gemini surfactant and 0.10-0.50 wt% of hydrophobic modified nano SiO299.89-99.20 wt% of mineralized water; the preparation method comprises the steps of adding the Gemini surfactant with the formula amount into the mineralized water with the formula amount, stirring for 50-150 minutes, uniformly mixing, and adding the hydrophobically modified nano SiO with the formula amount2Stirring for 10-60 minutes, and uniformly mixing to obtain the CO suitable for the high-temperature high-salinity oil reservoir2A foamer system. The system can effectively reduce the gas-oil fluidity ratio and avoid CO2Gas channeling and viscous fingering phenomena existing in the foam flooding process improve CO2The foam flooding efficiency overcomes the CO2The problem of gas channeling prevention and treatment in the foam flooding technology.
Description
Technical field
The present invention relates to technical field of tertiary oil recovery, and in particular to a kind of CO suitable for high temperature and high salt oil deposit2Foaming agent
System and preparation method thereof.
Background technique
As oil field development enters the middle and later periods, the overall recovery efficiency of primary oil recovery and secondary oil recovery is only able to achieve 30%~
40%, thus most of crude oil is still detained in the earth formation, since oil reservoir is sufficiently complex, has heterogeneity, oily Properties of Water-gas Flowing Through Porous Media is multiple
Miscellaneous, sweep efficiency and washing oil are than relatively limited, and tertiary oil recovery technology effectively improves oil deposil erude petroleum recovery ratio.
Tertiary oil recovery technology includes: that viscosity of injected water can be improved, reduce grease differences in viscosity, improve injection water swept volume
Polymer flooding；It can reduce interfacial tension, the surfactant flooding for improving injection oil-water displacement efficiency；And the drive of alkali drive, mixed phase,
Combination flooding etc..For high temperature (> 75 DEG C), high salinity reservoirs (> 10000mg/L), conformity to polymer is poor, and for hypotonic
Permeability oil reservoir applicability is bad.
Aerated fluid is widely used for oil reservoir foam blocking high permeability zone or macropore, prevents gas has channeling, containing aqueous vapor
The fields such as well water pumping gas production, drilling well, pressure break, sand surfing well-flushing.Foam flooding in the earth formation the property of can choose block high permeability formation,
Selective shut-off aquifer water-bearing stratum, meet oil defoaming, control mobility ratio effect it is good, and due in aerated fluid foaming agent be surface-active
The effect that agent can also improve displacement efficiency to a certain extent, change surface of stratum wetability, reduce capillary force, effectively improves
Oil recovery factor.
CO2Stratum energy can be improved, reduce oil water interfacial tension, realize mixed phase with crude oil by reducing Crude viscosity by driving
Etc. mechanism increase substantially oil recovery factor, it has also become one of most promising raising recovery ratio method.However due to gas
Mobility ratio water oil stream degree is high, CO2Drive be difficult to avoid that there are has channelings and Character of Viscous Finger, affect CO2It drives and improves recovery ratio
Effect, and suitable CO2Foam anti-channeling system can effectively anti-channeling, significantly improve the situation, and improve oil displacement efficiency.In addition,
Foam is a kind of Gas-Liquid Dispersion system of thermodynamic instability, needs to be added foaming agent to improve the frothing capacity and bubble of foam
Foam stability.
But in actual formation, temperature is higher and the presence of salinity is more demanding to the selection of foaming agent, and
CO2Diffusivity is strong, can dissolve in water in acidity, it is desirable to be able to meet stratum require, can stratum high-temperature, salinity,
Heatproof is formed in acid condition and the good aerated fluid of stability effectively blocks stratum.Have in early-stage study using anionic surface
Activating agent, high molecular polymer etc. are to increase the stability of foam, but to the CO of high temperature, high salinity, acidity2Foam flooding feelings
Condition adaptability is limited, thus develops a kind of efficient, stable, heat-resistant salt-resistant CO2Foam flooding system is opened three times for crude oil
It adopts and has great importance.
Summary of the invention
In view of the above-mentioned problems existing in the prior art, the present invention provides a kind of CO suitable for high temperature and high salt oil deposit2Bubble
Foam agent system and preparation method thereof.
The purpose of the present invention avoids CO first is that reduction gas-to-oil mobility ratio2Existing has channeling and viscosity during foam flooding
Fingering phenomenon improves CO2Foam flooding efficiency；There is provided a kind of CO still having at high temperature compared with good stability for purpose two2
Foaming agent system, has pushed CO2The development of the displacement of reservoir oil project work of foam.
The technical solution adopted in the present invention is as follows:
A kind of CO suitable for high temperature and high salt oil deposit2Foaming agent system is mixed by following components by weight percentage
It arrives:
Gemini surfactant: 0.01~0.30wt%；
Hydrophobically modified Nano-meter SiO_22: 0.10%~0.50wt%；
Mineralized water: 99.89~99.20wt%；
The gemini surfactant is by yellow crystals A and white solid B (4~10) in mass ratio: 1 ratio is prepared
It forms.
The gemini surfactant is
The yellow crystals A by Brij 35, chloroform, thionyl chloride in mass ratio (1~
5): (1~5): 1 proportion is formulated.
The white solid B is by ethylenediamine, potassium carbonate, solvent and 2- bromoethyl sodium sulfonate 1:(1~5 in mass ratio): (50
~55): the proportion of (5~10) is formulated.
The molecular weight of the Brij 35 is 318.56~537.92.
The hydrophobically modified Nano-meter SiO_22Partial size be 10~100nm, modification degree range are as follows: 30.2%~76.4%.
The salinity of the mineralized water is 10000~80000mg/L.
A kind of CO suitable for high temperature and high salt oil deposit2The preparation method of foaming agent system, comprising the following steps:
S1. the synthesis of gemini surfactant
The potassium carbonate of the yellow crystals A and formula ratio that take formula ratio are placed in flask or beaker, with volume ratio (1~3): 1
Acetone-water mixed solution as solvent, be warming up to 50~100 DEG C after stirring and dissolving, be slowly added dropwise by 30mL volume ratio (1~
3): the white solid B of the formula ratio of 1 acetone-water mixed solution dissolution is stirred under the conditions of 50~100 DEG C after being added dropwise to complete
8~15h is reacted, vacuum distillation removes solvent after the reaction was completed, and 50~200g ethyl alcohol is added, is filtered to remove impurity, obtains colourless
Ethyl alcohol is removed under reduced pressure to get gemini surfactant is arrived in transparency liquid；
S2. Nano-meter SiO_22Surface hydrophobicity is modified
Weigh 0.01~2g Nano-meter SiO_22It is placed in flask or beaker, stirs, be heated to 50 DEG C~80 DEG C, and constant temperature
10min~20min weighs 0.1~50g ethyl alcohol and is placed in flask, is configured to the Nano-meter SiO_2 of 4.8wt%2Lotion continues to stir
After dispersing 10min, it is added at one time 0.18~36g modifying agent dimethyldichlorosilane, changing for 0.1~50g is then slowly added dropwise
Property auxiliary agent water, after reaction 18~for 24 hours, by gained suspension with dehydrated alcohol centrifuge washing 3~4 times, through it is dry to constant weight to obtain the final product
Hydrophobically modified Nano-meter SiO_22；
S3. the preparation of mineralized water
Take 5~15g potassium chloride, 0.001~0.5g sodium sulphate, 0.001~0.5g sodium bicarbonate, 15~50g sodium chloride, 15
~50g calcium chloride and 0.001~1g magnesium chloride are dissolved into 1L deionized water, are stirred 10~60 minutes, are uniformly mixed, completely molten
The mineralized water of 99.89~99.20wt% needed for preparing foaming agent system is obtained after solution；
S4. it is suitable for the CO of high temperature and high salt oil deposit2The preparation of foaming agent system
0.01~0.30wt% step S1 institute is added into the mineralized water of the prepared 99.89~99.20wt% of step S3
The gemini surfactant of preparation stirs 50~150 minutes, is uniformly mixed, adds 0.10%~0.50wt% step S2
Prepared hydrophobically modified Nano-meter SiO_22, stir 10~60 minutes, be uniformly mixed to get described suitable for high temperature and high salt oil deposit
CO2Foaming agent system.
Yellow crystals A's the preparation method comprises the following steps: taking the Brij 35 of formula ratio in burning in the step S1
In bottle, the chloroform of formula ratio is added as solvent, is warming up to 35~60 DEG C, the thionyl chloride of formula ratio is slowly added dropwise, instead
1~5h is answered, is evaporated under reduced pressure up to yellow crystals A.
White solid B's the preparation method comprises the following steps: ethylenediamine of formula ratio, potassium carbonate is taken to be placed in flask in the step S1,
Using 30~60mL volume ratio (1~3): 1 acetone-water mixed solution is as solvent and 30mL volume ratio (1~3): 1 second is added
Alcohol-water mixtures dissolve, and are warming up to 30~60 DEG C after stirring and dissolving, are slowly added dropwise by 30mL volume ratio (1~3): 1 acetone-
The 2- bromoethyl sodium sulfonate of the formula ratio of water mixed solution dissolution, reacts 5-20h under conditions of 30~60 DEG C, stops reaction,
It is evaporated under reduced pressure up to white solid B.
The invention has the benefit that
(1) this CO in the present invention2Gas flow can be effectively reduced than water-oil mobility ratio in foaming agent system, avoids CO2
Existing has channeling and Character of Viscous Finger, improve CO during foam flooding2Foam flooding efficiency.
(2) this foaming agent system in the present invention still has more good stability at high temperature, has pushed CO2Foam
Displacement of reservoir oil project work development, have a good application prospect.
Specific embodiment
Embodiment 1
A kind of CO suitable for high temperature and high salt oil deposit2Foaming agent system is mixed by following components by weight percentage
It arrives:
Gemini surfactant: 0.01~0.30wt%；
Hydrophobically modified Nano-meter SiO_22: 0.10%~0.50wt%；
Mineralized water: 99.89~99.20wt%.
The gemini surfactant is by yellow crystals A and white solid B (4~10) in mass ratio: 1 ratio
It is formulated；
CO of the present invention2Gas flow can be effectively reduced than water-oil mobility ratio in foaming agent system, avoids CO2Foam
Has channeling present in oil displacement process and Character of Viscous Finger improve CO2Foam flooding efficiency.
Embodiment 2:
On the basis of embodiment 1, the gemini surfactant are as follows:
The specific synthetic method of the gemini surfactant are as follows:
The potassium carbonate of the yellow crystals A and formula ratio that take formula ratio are placed in flask or beaker, with volume ratio (1~3): 1
Acetone-water mixed solution as solvent, be warming up to 50~100 DEG C after stirring and dissolving, be slowly added dropwise by 30mL volume ratio (1~
3): the white solid B of the formula ratio of 1 acetone-water mixed solution dissolution is stirred under the conditions of 50~100 DEG C after being added dropwise to complete
8~15h is reacted, vacuum distillation removes solvent after the reaction was completed, and 50~200g ethyl alcohol is added, is filtered to remove impurity, obtains colourless
Ethyl alcohol is removed under reduced pressure to get gemini surfactant is arrived in transparency liquid.
The yellow crystals A is by Brij 35, chloroform, thionyl chloride (1~5) in mass ratio:
(1~5): 1 proportion is formulated；Yellow crystals A's the preparation method comprises the following steps: take the Brij 35 of formula ratio in
In flask, the chloroform of formula ratio is added as solvent, is warming up to 35~60 DEG C, the thionyl chloride of formula ratio is slowly added dropwise,
1~5h is reacted, is evaporated under reduced pressure up to yellow crystals A.The molecular weight of the Brij 35 is 318.56
~537.92.
The white solid B is by ethylenediamine, potassium carbonate, solvent and 2- bromoethyl sodium sulfonate 1:(1~5 in mass ratio): (50
~55): the proportion of (5~10) is formulated.White solid B's the preparation method comprises the following steps: ethylenediamine of formula ratio, potassium carbonate is taken to be placed in
In flask, using 30~60mL volume ratio (1~3): 1 acetone-water mixed solution as solvent and be added 30mL volume ratio (1~
3): 1 ethanol-water mixture dissolves, and is warming up to 30~60 DEG C after stirring and dissolving, is slowly added dropwise by 30mL volume ratio (1~3): 1
Acetone-water mixed solution dissolution formula ratio 2- bromoethyl sodium sulfonate, react 5-20h under conditions of 30~60 DEG C, stop
It only reacts, is evaporated under reduced pressure up to white solid B.
Embodiment 3:
On the basis of embodiment 1, the hydrophobically modified Nano-meter SiO_22Partial size be 10~100nm, modification degree range
Are as follows: 30.2%~76.4%.
The hydrophobically modified Nano-meter SiO_22I.e. by modifying agent to Nano-meter SiO_22Carry out the modified gained of surface hydrophobicity；Specific side
Method are as follows:
Weigh 0.01~2g Nano-meter SiO_22It is placed in flask or beaker, stirs, be heated to 50 DEG C~80 DEG C, and constant temperature
10min~20min weighs 0.1~50g ethyl alcohol and is placed in flask, is configured to the nanometer titanium dioxide silicon emulsion of 4.8wt%, continues
After being dispersed with stirring 10min, it is added at one time 0.18~36g modifying agent, the modified additive water of 0.1~50g is then slowly added dropwise, instead
Answer 18~for 24 hours after, by gained suspension with dehydrated alcohol centrifuge washing 3~4 times, through it is dry to constant weight up to hydrophobically modified nanometer
SiO2。
Embodiment 4:
On the basis of embodiment 1, the salinity of the mineralized water is 10000~80000mg/L, and temperature is 30~90
℃。
The preparation method of the mineralized water are as follows:
Take 5~15g potassium chloride, 0.001~0.5g sodium sulphate, 0.001~0.5g sodium bicarbonate, 15~50g sodium chloride, 15
~50g calcium chloride and 0.001~1g magnesium chloride are dissolved into 1L deionized water, are stirred 10~60 minutes, are uniformly mixed, completely molten
The mineralized water of 99.89~99.20wt% needed for preparing foaming agent system is obtained after solution
Embodiment 5:
A kind of preparation method of the CO2 foaming agent system suitable for high temperature and high salt oil deposit, comprising the following steps:
S1. the synthesis of gemini surfactant
The potassium carbonate of the yellow crystals A and formula ratio that take formula ratio are placed in flask or beaker, with volume ratio (1~3): 1
Acetone-water mixed solution as solvent, be warming up to 50~100 DEG C after stirring and dissolving, be slowly added dropwise by 30mL volume ratio (1~
3): the white solid B of the formula ratio of 1 acetone-water mixed solution dissolution is stirred under the conditions of 50~100 DEG C after being added dropwise to complete
8~15h is reacted, vacuum distillation removes solvent after the reaction was completed, and 50~200g ethyl alcohol is added, is filtered to remove impurity, obtains colourless
Ethyl alcohol is removed under reduced pressure to get gemini surfactant is arrived in transparency liquid；
S2. Nano-meter SiO_22Surface hydrophobicity is modified
Weigh 0.01~2g Nano-meter SiO_22It is placed in flask or beaker, stirs, be heated to 50 DEG C~80 DEG C, and constant temperature
10min~20min weighs 0.1~50g ethyl alcohol and is placed in flask, is configured to the Nano-meter SiO_2 of 4.8wt%2Lotion continues to stir
After dispersing 10min, it is added at one time 0.18~36g modifying agent dimethyldichlorosilane, changing for 0.1~50g is then slowly added dropwise
Property auxiliary agent water, after reaction 18~for 24 hours, by gained suspension with dehydrated alcohol centrifuge washing 3~4 times, through it is dry to constant weight to obtain the final product
Hydrophobically modified Nano-meter SiO_22；
S3. the preparation of mineralized water
Take 5~15g potassium chloride, 0.001~0.5g sodium sulphate, 0.001~0.5g sodium bicarbonate, 15~50g sodium chloride, 15
~50g calcium chloride and 0.001~1g magnesium chloride are dissolved into 1L deionized water, are stirred 10~60 minutes, are uniformly mixed, completely molten
The mineralized water of 99.89~99.20wt% needed for preparing foaming agent system is obtained after solution；
S4. it is suitable for the CO of high temperature and high salt oil deposit2The preparation of foaming agent system
0.01~0.30wt% step S1 institute is added into the mineralized water of the prepared 99.89~99.20wt% of step S3
The gemini surfactant of preparation stirs 50~150 minutes, is uniformly mixed, adds 0.10%~0.50wt% step S2
Prepared hydrophobically modified Nano-meter SiO_22, stir 10~60 minutes, be uniformly mixed to get described suitable for high temperature and high salt oil deposit
CO2Foaming agent system.
Embodiment 6:
A kind of CO suitable for high temperature and high salt oil deposit2The preparation method of foaming agent system, comprising the following steps:
(1) synthesis of gemini surfactant
It takes 20~50g of Brij 35 in the glass containers such as flask or beaker, 15~60mL tri- is added
Chloromethanes is warming up to 35~60 DEG C as solvent, and 5~20mL thionyl chloride is slowly added dropwise, and reacts 1~5h, and vacuum distillation obtains
Product is yellow crystals A；Take 1~2g of ethylenediamine and 5~10g of potassium carbonate to be placed in the glass containers such as flask or beaker, with 1:1~
30~60mL of acetone/water mixed solution of 3:1 volume ratio is molten as the ethanol/water mixed liquor that 1:1~3:1 volume ratio is added in solvent
Solution is warming up to 30~60 DEG C after stirring and dissolving, be slowly added dropwise the 2- bromoethyl sodium sulfonate 10 that is dissolved by 30mL mixed solution~
20g reacts 5-20h (30~60 DEG C), stops reaction, is evaporated under reduced pressure to white solid B；Take the yellow crystals A and carbon of 30~50g
Sour 5~10g of potassium is placed in single-necked flask, using the acetone/water mixed solution of certain volume ratio as solvent, is heated up after stirring and dissolving
To 50~100 DEG C, the white of the 5~10g dissolved by the acetone-water mixed solution that 30mL volume ratio is 1:1~3:1 is slowly added dropwise
Solid B is stirred to react 8~15h under the conditions of 50~100 DEG C after being added dropwise to complete.Vacuum distillation removes solvent after the reaction was completed, adds
Enter 50~200g ethyl alcohol, be filtered to remove impurity, obtain colourless transparent liquid, ethyl alcohol is removed under reduced pressure to get living to double type surface
Property agent.
(2) Nano-meter SiO_22Surface hydrophobicity is modified
Weigh 0.01~2g Nano-meter SiO_22It is placed in there-necked flask, stirs, be heated to certain temperature (50 DEG C~80 DEG C), and is permanent
Warm 10min~20min.It weighs 0.1~50g ethyl alcohol to be placed in there-necked flask, being configured to nano silica mass fraction is
The lotion of 4.8wt% continues after being dispersed with stirring 10min, is added at one time whole dimethyldichlorosilane (SiO2With dimethyl two
Chlorosilane molar ratio is 1:18~2:1), the modified additive water of 0.1~50g is then slowly added dropwise.Reaction 18~for 24 hours after, will hang
Supernatant liquid is with dehydrated alcohol centrifuge washing 3~4 times, through drying to constant weight up to product.
(3) preparation of mineralized water
Take 5~15g potassium chloride, 0.001~0.5g sodium sulphate, 0.001~0.5g sodium bicarbonate, 15~50g sodium chloride, 15
~50g calcium chloride, 0.001~1g magnesium chloride are dissolved into 1L deionized water, are stirred 10~60 minutes, are uniformly mixed, have been guaranteed
Fully dissolved obtains mineralized water needed for preparing foaming agent；
(4) it is suitable for the CO of high temperature and high salt oil deposit2The preparation of foaming agent system
The gemini surfactant of 0.01~0.30wt% is added into prepared mineralized water, stirs 50~150 points
Clock is uniformly mixed, adds the hydrophobically modified Nano-meter SiO_2 of 0.10%~0.50wt%2Particle stirs 10~60 minutes, mixing
Uniformly, the preparation of foaming agent system is completed.
Embodiment 7:
The sodium chloride mineralized water that salinity is 10000mg/L is prepared, stirs 20 minutes, is allowed to be completely dissolved；To configuring
Mineralized water in be added 0.01wt% gemini surfactant, stir 100 minutes, be uniformly mixed, add 1% hydrophobically modified
Nano-meter SiO_22Particle stirs 20 minutes, is uniformly mixed, and obtains mixed solution；High-speed stirred is blistered at 10000rpm, gained bubble
Foam volume is up to 6.5 times, and half foam life period is 44 minutes under normal temperature and pressure.
Embodiment 8:
Present embodiments provide a kind of CO suitable for high temperature and high salt oil deposit2Foaming agent system configures salinity
The sodium chloride mineralized water of 50000mg/L stirs 40 minutes, is uniformly mixed, guarantees to be completely dissolved；Add into prepared mineralized water
Enter 0.015wt% gemini surfactant, stir 120 minutes, is uniformly mixed, adds 0.1wt% hydrophobically modified nanometer
SiO2Particle, stir 30 minutes, be uniformly mixed, at 10000rpm high-speed stirred blister, gained foam volume up to 64.2 times,
Its 6MPa, half foam life period is 34.5 minutes at 75 DEG C.
Embodiment 9:
Present embodiments provide a kind of CO suitable for high temperature and high salt oil deposit2Foaming agent system configures total salinity
The mineralized water of 80000mg/L, include in mineralized water 71000mg/L sodium chloride mineralized water, 4000mg/L calcium chloride mineralized water,
500mg/L sodium bicarbonate mineralized water, 4500mg/L barium chloride mineralized water stir 40 minutes, are uniformly mixed, guarantee to be completely dissolved；
0.09wt% gemini surfactant is added into prepared mineralized water, stirs 120 minutes, is uniformly mixed, adds
0.5wt% hydrophobically modified Nano-meter SiO_22Particle stirs 30 minutes, is uniformly mixed, and high-speed stirred is blistered at 10000rpm, gained
Foam volume is up to 7.3 times, and 8MPa, half foam life period is 52.8 minutes at 80 DEG C.
Embodiment 10:
Present embodiments provide a kind of common anionic (SDS) and nano-silica
SiClx compound system.
The sodium chloride mineralized water that salinity is 60000mg/L is prepared, stirs 20 minutes, is allowed to be completely dissolved；To configuring
Mineralized water in be added 0.1wt%SDS, stir 100 minutes, be uniformly mixed, add 1% hydrophobically modified Nano-meter SiO_22Particle,
Stirring 20 minutes is uniformly mixed, and obtains mixed solution；High-speed stirred is blistered at 10000rpm, and gained foam volume is up to 5.8
Times, half foam life period is 15.5 minutes under normal temperature and pressure.
Comparative example 7-10 is it is found that this foaming agent system of the invention still has more good stabilization at high temperature
Property, push CO2The development of the displacement of reservoir oil project work of foam, has a good application prospect.
Brij 35 according to the present invention, chloroform, thionyl chloride, ethylenediamine, potassium carbonate, third
Ketone, ethyl alcohol, 2- bromoethyl sodium sulfonate, Nano-meter SiO_22Etc. being oilfield applications common agents, can buy on the market.
The above citing is only to of the invention for example, do not constitute the limitation to protection scope of the present invention, all
It is within being all belonged to the scope of protection of the present invention with the same or similar design of the present invention.
Claims (9)
1. a kind of CO suitable for high temperature and high salt oil deposit2Foaming agent system, it is characterised in that: by weight percentage, by with the following group
Divide and be mixed to get:
Gemini surfactant: 0.01~0.30wt%；
Hydrophobically modified Nano-meter SiO_22: 0.10%~0.50wt%；
Mineralized water: 99.89~99.20wt%；
The gemini surfactant is by yellow crystals A and white solid B (4~10) in mass ratio: 1 ratio prepare and
At.
2. a kind of CO suitable for high temperature and high salt oil deposit as described in claim 12Foaming agent system, it is characterised in that: the institute
Yellow crystals A is stated by Brij 35, chloroform, thionyl chloride (1~5) in mass ratio: (1~5): 1
Proportion is formulated.
3. a kind of CO suitable for high temperature and high salt oil deposit as described in claim 12Foaming agent system, it is characterised in that: described white
Color solid B is by ethylenediamine, potassium carbonate, solvent and 2- bromoethyl sodium sulfonate 1:(1~5 in mass ratio): (50~55): (5~10)
Proportion be formulated.
4. a kind of CO suitable for high temperature and high salt oil deposit as claimed in claim 22Foaming agent system, it is characterised in that: described ten
The molecular weight of dialkyl group alcohol polyoxyethylene ether is 318.56~537.92.
5. a kind of CO suitable for high temperature and high salt oil deposit as described in claim 12Foaming agent system, it is characterised in that: described to dredge
Water modified Nano SiO2Partial size be 10~100nm, modification degree range are as follows: 30.2%~76.4%.
6. a kind of CO suitable for high temperature and high salt oil deposit as described in claim 12Foaming agent system, it is characterised in that: the mine
The salinity for changing water is 10000~80000mg/L.
7. a kind of CO suitable for high temperature and high salt oil deposit2The preparation method of foaming agent system, which comprises the following steps:
S1. the synthesis of gemini surfactant
The potassium carbonate of the yellow crystals A and formula ratio that take formula ratio are placed in flask or beaker, with volume ratio (1~3): the third of 1
Ketone-water mixed solution is warming up to 50~100 DEG C after stirring and dissolving, is slowly added dropwise by 30mL volume ratio (1~3): 1 as solvent
Acetone-water mixed solution dissolution formula ratio white solid B, be stirred to react 8 under the conditions of 50~100 DEG C after being added dropwise to complete
~15h, vacuum distillation removes solvent after the reaction was completed, and 50~200g ethyl alcohol is added, is filtered to remove impurity, obtains colorless and transparent liquid
Ethyl alcohol is removed under reduced pressure to get gemini surfactant is arrived in body；
S2. Nano-meter SiO_22Surface hydrophobicity is modified
Weigh 0.01~2g Nano-meter SiO_22It is placed in flask or beaker, stirs, be heated to 50 DEG C~80 DEG C, and constant temperature 10min~
20min weighs 0.1~50g ethyl alcohol and is placed in flask, is configured to the Nano-meter SiO_2 of 4.8wt%2Lotion continues to be dispersed with stirring
After 10min, it is added at one time 0.18~36g modifying agent dimethyldichlorosilane, the modification that 0.1~50g is then slowly added dropwise helps
Agent water, after reaction 18~for 24 hours, by gained suspension with dehydrated alcohol centrifuge washing 3~4 times, through it is dry to constant weight up to hydrophobic
Modified Nano SiO2；
S3. the preparation of mineralized water
Take 5~15g potassium chloride, 0.001~0.5g sodium sulphate, 0.001~0.5g sodium bicarbonate, 15~50g sodium chloride, 15~
50g calcium chloride and 0.001~1g magnesium chloride are dissolved into 1L deionized water, are stirred 10~60 minutes, are uniformly mixed, are completely dissolved
The mineralized water of 99.89~99.20wt% needed for preparing foaming agent system is obtained afterwards；
S4. it is suitable for the CO of high temperature and high salt oil deposit2The preparation of foaming agent system
0.01~0.30wt% step S1 is added into the mineralized water of the prepared 99.89~99.20wt% of step S3 to be prepared
Gemini surfactant, stir 50~150 minutes, be uniformly mixed, add 0.10%~0.50wt% step S2 and matched
The hydrophobically modified Nano-meter SiO_2 of system2, stir 10~60 minutes, be uniformly mixed to get the CO suitable for high temperature and high salt oil deposit2Bubble
Foam agent system.
8. a kind of CO suitable for high temperature and high salt oil deposit as claimed in claim 72The preparation method of foaming agent system, feature
It is, yellow crystals A's the preparation method comprises the following steps: taking the Brij 35 of formula ratio in flask in the step S1
In, the chloroform of formula ratio is added as solvent, is warming up to 35~60 DEG C, the thionyl chloride of formula ratio, reaction 1 is slowly added dropwise
~5h is evaporated under reduced pressure up to yellow crystals A.
9. a kind of CO suitable for high temperature and high salt oil deposit as claimed in claim 72The preparation method of foaming agent system, feature
It is, white solid B's the preparation method comprises the following steps: taking the ethylenediamine of formula ratio, potassium carbonate to be placed in flask, with 30 in the step S1
~60mL volume ratio (1~3): 1 acetone-water mixed solution is as solvent and 30mL volume ratio (1~3): 1 ethyl alcohol-is added
Water mixed liquid dissolves, and is warming up to 30~60 DEG C after stirring and dissolving, is slowly added dropwise by 30mL volume ratio (1~3): 1 acetone-water is mixed
The 2- bromoethyl sodium sulfonate for closing the formula ratio of solution dissolution, reacts 5-20h under conditions of 30~60 DEG C, stops reaction, decompression
It distills up to white solid B.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426367A (en) * | 2021-06-23 | 2021-09-24 | 西安石油大学 | Method for realizing stabilization of aqueous-phase foam through surface modification of nano silicon dioxide |
| CN114316939A (en) * | 2022-01-05 | 2022-04-12 | 东北石油大学 | Carbon dioxide gas soluble foaming agent suitable for compact reservoir |
| CN115895626A (en) * | 2022-11-09 | 2023-04-04 | 山东新港化工有限公司 | Enhanced CO for low permeability reservoirs 2 Corrosion inhibition type nano foam oil washing agent for flooding and preparation method and application thereof |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852676B1 (en) * | 2003-03-21 | 2005-02-08 | Halliburton Energy Services, Inc. | Well completion foamed spacer fluids and methods |
| CN1935346A (en) * | 2006-09-22 | 2007-03-28 | 西南石油大学 | Bisamide bissulfosalt double surface active agent, and its synthesizing method |
| CN102380330A (en) * | 2011-09-11 | 2012-03-21 | 西南石油大学 | Cathode-non-amphoteric ion type gemini surfactant and synthesis method |
| CN102746841A (en) * | 2012-06-29 | 2012-10-24 | 中国石油大学(华东) | Nanoparticle-added composite foam system used for oil and gas field and preparation method thereof |
| US20120267107A1 (en) * | 2005-09-09 | 2012-10-25 | Halliburton Energy Services, Inc. | Foamed Spacer Fluids Containing Cement Kiln Dust and Methods of Use |
| CN103374341A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation and application of gemini amphiphilic surfactant |
| CN104263341A (en) * | 2014-08-08 | 2015-01-07 | 中国石油天然气股份有限公司 | Positive and negative ion surfactant compound mixture and preparation method thereof |
| CN106634924A (en) * | 2016-12-21 | 2017-05-10 | 中国石油大学(华东) | Nanometer fluid for compact oil reservoir imbibition oil discharging and preparation method thereof |
| CN107384357A (en) * | 2017-06-14 | 2017-11-24 | 中国石油天然气股份有限公司 | Polyoxyethylene-benzene sulfonate type composite gemini surfactant and preparation method thereof |
| CN107603580A (en) * | 2017-08-30 | 2018-01-19 | 长江大学 | Heat-resistant salt-resistant low interfacial tension foam system and preparation method thereof |
-
2018
- 2018-08-31 CN CN201811010426.XA patent/CN109321225B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6852676B1 (en) * | 2003-03-21 | 2005-02-08 | Halliburton Energy Services, Inc. | Well completion foamed spacer fluids and methods |
| US20120267107A1 (en) * | 2005-09-09 | 2012-10-25 | Halliburton Energy Services, Inc. | Foamed Spacer Fluids Containing Cement Kiln Dust and Methods of Use |
| CN1935346A (en) * | 2006-09-22 | 2007-03-28 | 西南石油大学 | Bisamide bissulfosalt double surface active agent, and its synthesizing method |
| CN102380330A (en) * | 2011-09-11 | 2012-03-21 | 西南石油大学 | Cathode-non-amphoteric ion type gemini surfactant and synthesis method |
| CN103374341A (en) * | 2012-04-13 | 2013-10-30 | 中国石油天然气股份有限公司 | Preparation and application of gemini amphiphilic surfactant |
| CN102746841A (en) * | 2012-06-29 | 2012-10-24 | 中国石油大学(华东) | Nanoparticle-added composite foam system used for oil and gas field and preparation method thereof |
| CN104263341A (en) * | 2014-08-08 | 2015-01-07 | 中国石油天然气股份有限公司 | Positive and negative ion surfactant compound mixture and preparation method thereof |
| CN106634924A (en) * | 2016-12-21 | 2017-05-10 | 中国石油大学(华东) | Nanometer fluid for compact oil reservoir imbibition oil discharging and preparation method thereof |
| CN107384357A (en) * | 2017-06-14 | 2017-11-24 | 中国石油天然气股份有限公司 | Polyoxyethylene-benzene sulfonate type composite gemini surfactant and preparation method thereof |
| CN107603580A (en) * | 2017-08-30 | 2018-01-19 | 长江大学 | Heat-resistant salt-resistant low interfacial tension foam system and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄俊莉: "磺酸盐双子表面活性剂的合成与性能研究", 《精细石油化工进展》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426367A (en) * | 2021-06-23 | 2021-09-24 | 西安石油大学 | Method for realizing stabilization of aqueous-phase foam through surface modification of nano silicon dioxide |
| CN114316939A (en) * | 2022-01-05 | 2022-04-12 | 东北石油大学 | Carbon dioxide gas soluble foaming agent suitable for compact reservoir |
| CN114316939B (en) * | 2022-01-05 | 2022-07-22 | 东北石油大学 | Carbon dioxide gas soluble foaming agent suitable for compact reservoir |
| CN115895626A (en) * | 2022-11-09 | 2023-04-04 | 山东新港化工有限公司 | Enhanced CO for low permeability reservoirs 2 Corrosion inhibition type nano foam oil washing agent for flooding and preparation method and application thereof |
| CN115895626B (en) * | 2022-11-09 | 2023-10-10 | 山东新港化工有限公司 | Low permeability reservoir potentiating CO 2 Corrosion inhibition type nano foam oil washing agent for driving and preparation method and application thereof |
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