CN106987242A - A kind of resistance to high Mg2+The compound petroleum driving and recovering agent of salt and oil flooding method - Google Patents
A kind of resistance to high Mg2+The compound petroleum driving and recovering agent of salt and oil flooding method Download PDFInfo
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 45
- 150000001875 compounds Chemical class 0.000 title claims abstract description 33
- 239000003208 petroleum Substances 0.000 title claims abstract description 33
- 150000003839 salts Chemical class 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000000017 hydrogel Substances 0.000 claims abstract description 34
- 229920000642 polymer Polymers 0.000 claims abstract description 24
- 239000004094 surface-active agent Substances 0.000 claims abstract description 20
- 238000012986 modification Methods 0.000 claims abstract description 15
- 230000004048 modification Effects 0.000 claims abstract description 15
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 47
- 239000000376 reactant Substances 0.000 claims description 31
- 238000002360 preparation method Methods 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 25
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 21
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 20
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 230000010148 water-pollination Effects 0.000 claims description 14
- 230000008961 swelling Effects 0.000 claims description 13
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 11
- 239000000499 gel Substances 0.000 claims description 10
- 229920002401 polyacrylamide Polymers 0.000 claims description 9
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 7
- 230000007062 hydrolysis Effects 0.000 claims description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 229920001610 polycaprolactone Polymers 0.000 claims description 7
- 239000004632 polycaprolactone Substances 0.000 claims description 7
- 238000001291 vacuum drying Methods 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 238000006136 alcoholysis reaction Methods 0.000 claims description 6
- QVYARBLCAHCSFJ-UHFFFAOYSA-N butane-1,1-diamine Chemical compound CCCC(N)N QVYARBLCAHCSFJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- 239000002383 tung oil Substances 0.000 claims description 6
- XFRVVPUIAFSTFO-UHFFFAOYSA-N 1-Tridecanol Chemical compound CCCCCCCCCCCCCO XFRVVPUIAFSTFO-UHFFFAOYSA-N 0.000 claims description 5
- 239000002585 base Substances 0.000 claims description 5
- 239000011206 ternary composite Substances 0.000 claims description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 claims description 4
- 239000003054 catalyst Substances 0.000 claims description 4
- 239000003431 cross linking reagent Substances 0.000 claims description 4
- 150000002191 fatty alcohols Chemical class 0.000 claims description 4
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 4
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 4
- -1 alkylbenzene sulfonate Chemical class 0.000 claims description 3
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004115 Sodium Silicate Substances 0.000 claims description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 2
- USDJGQLNFPZEON-UHFFFAOYSA-N [[4,6-bis(hydroxymethylamino)-1,3,5-triazin-2-yl]amino]methanol Chemical compound OCNC1=NC(NCO)=NC(NCO)=N1 USDJGQLNFPZEON-UHFFFAOYSA-N 0.000 claims description 2
- 229910021538 borax Inorganic materials 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- QXDMQSPYEZFLGF-UHFFFAOYSA-L calcium oxalate Chemical compound [Ca+2].[O-]C(=O)C([O-])=O QXDMQSPYEZFLGF-UHFFFAOYSA-L 0.000 claims description 2
- 150000001718 carbodiimides Chemical class 0.000 claims description 2
- 238000013329 compounding Methods 0.000 claims description 2
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 claims description 2
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- RPDAUEIUDPHABB-UHFFFAOYSA-N potassium ethoxide Chemical compound [K+].CC[O-] RPDAUEIUDPHABB-UHFFFAOYSA-N 0.000 claims description 2
- BDAWXSQJJCIFIK-UHFFFAOYSA-N potassium methoxide Chemical compound [K+].[O-]C BDAWXSQJJCIFIK-UHFFFAOYSA-N 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 claims description 2
- 235000019795 sodium metasilicate Nutrition 0.000 claims description 2
- 239000001488 sodium phosphate Substances 0.000 claims description 2
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 2
- 239000004328 sodium tetraborate Substances 0.000 claims description 2
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 2
- 239000004342 Benzoyl peroxide Substances 0.000 claims 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims 1
- 235000019400 benzoyl peroxide Nutrition 0.000 claims 1
- 125000003916 ethylene diamine group Chemical group 0.000 claims 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims 1
- 229910052939 potassium sulfate Inorganic materials 0.000 claims 1
- 235000011151 potassium sulphates Nutrition 0.000 claims 1
- 235000011008 sodium phosphates Nutrition 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 19
- 239000003513 alkali Substances 0.000 abstract description 5
- 230000002209 hydrophobic effect Effects 0.000 abstract description 5
- 150000007529 inorganic bases Chemical class 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- VAZSKTXWXKYQJF-UHFFFAOYSA-N ammonium persulfate Chemical group [NH4+].[NH4+].[O-]S(=O)OOS([O-])=O VAZSKTXWXKYQJF-UHFFFAOYSA-N 0.000 description 6
- WSVQZZFFMBFCKH-UHFFFAOYSA-N [Na].C(CCCCCCCCCCCCCCCCC)C1=C(C=CC=C1)S(=O)(=O)O Chemical compound [Na].C(CCCCCCCCCCCCCCCCC)C1=C(C=CC=C1)S(=O)(=O)O WSVQZZFFMBFCKH-UHFFFAOYSA-N 0.000 description 5
- 239000010779 crude oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- OZFIGURLAJSLIR-UHFFFAOYSA-N 1-ethenyl-2h-pyridine Chemical class C=CN1CC=CC=C1 OZFIGURLAJSLIR-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 2
- 229910001948 sodium oxide Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- QUBQYFYWUJJAAK-UHFFFAOYSA-N oxymethurea Chemical compound OCNC(=O)NCO QUBQYFYWUJJAAK-UHFFFAOYSA-N 0.000 description 1
- 229950005308 oxymethurea Drugs 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005320 surfactant adsorption Methods 0.000 description 1
Classifications
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/91—Polymers modified by chemical after-treatment
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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
- C09K8/588—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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
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- Chemical & Material Sciences (AREA)
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- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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Abstract
The present invention relates to the resistance to high Mg of one kind2+The compound petroleum driving and recovering agent of salt and oil flooding method, belong to technical field of oil production engineering.Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Parents be modified hydrogel 2~4.5%, alkaline matter 0.05~1.5%, surfactant 0.2~1.2%, polymer 0.4~1.0%, remaining be water.Inorganic base in compound oil displacement agent is carried out pre-coated by the hydrogel being modified by a kind of parents, then is carried out with water, surfactant, polymer after disperseing, and can preferably prevent high Mg2+The influence to oil displacement efficiency of salt, while oil water interfacial tension can be reduced；Wherein, by after hydrogel progress hydrophobic modification, oil water interfacial tension on the one hand can be reduced, while Mg can also be reduced2+The reaction rate of salt and alkali.
Description
Technical field
The present invention relates to the resistance to high Mg of one kind2+The compound petroleum driving and recovering agent of salt and oil flooding method, belong to oil production engineering neck
Domain.
Background technology
With the development of World Economics, the social required quantity of oil is continuously increased, and petroleum reserves is constantly reduced.Oil is made
Just becoming more and more valuable for non-renewable resource.Problems faced has one, and imbalance between supply and demand is protruded, oil demand amount it is more big more
Greatly, new oil field is fewer and fewer；Two, it is also left in depleted reservoirs to have substantial oil.Primary oil recovery (POR) can produce 10~25% ground
Lower crude oil, secondary oil recovery (SOR) can produce 15~25% underground crude oils, i.e. primary oil recovery and secondary oil recovery only produces 25~50%
Underground crude oil.In order to ensure that oil is supplied, meets human wants steadily in the long term, it is necessary to which research and development improves oil recovery
Technology, tertiary oil recovery (EOR) can make oil recovery factor improve 6~20% again by intensified oil reduction measure, even more many.
Ternary composite driving intensified oil reduction technology results from the 80's of last century, from single, binary chemical flooding, with
Based on the cooperative effect of a variety of displacing agents.The displacing agent that experiment indoors and field test are commonly used in studying at present has:Alkaline agent
(A), surfactant (S), polymer (P);It is exactly alkaline agent-surfactant-polymer flooding that three's collaboration, which is used,
(ASP) .Wherein, highly basic (NaOH) can be lived with active component reaction generation natural surfactant in crude oil with applying surface
Property agent produce synergy, be greatly reduced oil-water interfacial tension and reduction surfactant adsorption amount, make combination flooding into
This decline.
But, for high Mg2+For the oil reservoir of salt, inorganic salts therein easily eliminate surfactant in oil-water interface
On effect, while can also be reacted with highly basic, the effect in oil displacement agent is constantly declined.Therefore, for Mg2+The high oil of salt
Field easily produces the problem of oil displacement efficiency is bad when using the chemical displacement of reservoir oil.
The content of the invention
The technical problems to be solved by the invention are：For high Mg2+The oil reservoir of salt content, during by chemical thermal equilibrium,
Due to Mg2+There is the effect reduction for the reduction interfacial tension for causing surfactant in inorganic salts, be easily caused drive oil recovery efficiency not
High the problem of, simultaneously because Mg2+Salt can react with the alkali in oil displacement agent, be easily caused oil displacement agent alkaline in use
The effect of composition constantly decays.
To solve the above problems, employing following technological means：The hydrogel being modified by a kind of parents is by complex oil displacing
Inorganic base in agent carries out pre-coated, then is carried out with water, surfactant, polymer after disperseing, and can preferably prevent high Mg2+
The influence to oil displacement efficiency of salt, while oil water interfacial tension can be reduced；Wherein, by hydrogel carry out hydrophobic modification it
Afterwards, oil water interfacial tension on the one hand can be reduced, while Mg can also be reduced2+The reaction rate of salt and alkali.
Technical scheme is：
A kind of resistance to high Mg2+The compound petroleum driving and recovering agent of salt, is made up of following component in percentage by weight：Parents are modified
Hydrogel 2~4.5%, alkaline matter 0.05~1.5%, surfactant 0.2~1.2%, polymer 0.4~1.0%, remaining be
Water.
Described alkaline matter be selected from sodium hydroxide, potassium hydroxide, sodium acid carbonate, sodium carbonate, sodium metasilicate, sodium tetraborate,
One or several kinds of combinations in sodium phosphate, trimethylamine, triethylamine.
Described surfactant is selected from petroleum sulfonate or heavy alkylbenzene sulfonate.
Described polymer is water-soluble polyacrylamide polymer, the hydrolysis of the water-soluble polyacrylamide polymer
Spend for 20~30%, the molecular weight of the polymer is 800~24,000,000.
The preparation method for the hydrogel that described parents are modified, comprises the following steps：
1st step, by weight, by polycaprolactone, 15~25 parts are dissolved in 75~100 parts of ethyl acetate, add initiator
2~4 parts, it is well mixed, adds 6~12 parts of 3~5 parts of hydrophobicity reactant and hydrophily reactant, is well mixed；
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, be heated to 80~85 DEG C reaction 2~
4h, the demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
The preparation method of described hydrophobicity reactant is：By weight, by 12~18 parts of tung oil, fatty alcohol 55~70
Part, 0.1~0.12 part of generation alcoholysis reaction of base catalyst, obtain hydrophobicity reactant；Fatty alcohol is selected from isomerous tridecanol, different
One or more of mixture in the alcohol of structure ten, the alcohol of isomery seven, polyethylene glycol or polypropylene glycol；Base catalyst is selected from hydroxide
Sodium, potassium hydroxide, calcium hydroxide, caustic alcohol, potassium ethoxide, sodium methoxide, potassium methoxide or calcium oxalate.
The preparation method of described hydrophily reactant is：By weight, by crosslinking agent and NVP
Compare 1 according to weight：3~5 mixing.
Described initiator is selected from ammonium persulfate, potassium peroxydisulfate, sodium peroxydisulfate, hydrogen peroxide, di-t-butyl peroxide, peroxide
Change one or more compoundings in benzoyl and suitable azo-initiator.
Described crosslinking agent be ethylenediamine, butanediamine, carbodiimides, trimethylol melamine, dimethylol urea or
Aziridine.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel that parents are modified is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 10~15%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
The hydrogel that parents are modified is in high Mg2+Application in the ternary composite driving finish of content oil reservoir.
Beneficial effect
The hydrogel being modified by a kind of parents by compound oil displacement agent inorganic base carry out pre-coated, then with water, surface-active
Agent, polymer are carried out after disperseing, and can preferably prevent high Mg2+The influence to oil displacement efficiency of salt, while profit can be reduced
Interfacial tension；Wherein, by after hydrogel progress hydrophobic modification, oil water interfacial tension on the one hand can be reduced, while also may be used
To reduce Mg2+The reaction rate of salt and alkali.
Embodiment
Embodiment 1
Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Hydrogel 2%, the hydroxide of parents' modification
Sodium 0.05%, octadecyl benzenesulfonic acid sodium 0.2%, polyacrylamide（Degree of hydrolysis is 20%, and molecular weight ranges are 1200~16,000,000）
0.4%th, remaining is water.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel that parents are modified is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 10%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
The preparation method for the hydrogel that described parents are modified, comprises the following steps：
1st step, by weight, by polycaprolactone, 15 parts are dissolved in 75 parts of ethyl acetate, add 2 parts of ammonium persulfate, mix
Close uniform, add 6 parts of 3 parts of hydrophobicity reactant and hydrophily reactant, be well mixed；The system of described hydrophobicity reactant
Preparation Method is：By weight, by 12 parts of tung oil, 55 parts of ten alcohol of isomery, 0.1 part of generation alcoholysis reaction of sodium hydroxide, dredged
Aqueous reactant；The preparation method of described hydrophily reactant is：By weight, by butanediamine and N- ethenyl pyrrolidones
Ketone compares 1 according to weight：3 mixing.
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, is heated to 80 DEG C of reaction 2h,
The demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
Embodiment 2
Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Hydrogel 4.5%, the hydrogen-oxygen of parents' modification
Change sodium 1.5%, octadecyl benzenesulfonic acid sodium 1.2%, polyacrylamide（Degree of hydrolysis is 30%, and molecular weight ranges are 1200~1600
Ten thousand）1.0%th, remaining is water.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel that parents are modified is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 15%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
The preparation method for the hydrogel that described parents are modified, comprises the following steps：
1st step, by weight, by polycaprolactone, 25 parts are dissolved in 100 parts of ethyl acetate, add 4 parts of ammonium persulfate, mix
Close uniform, add 12 parts of 5 parts of hydrophobicity reactant and hydrophily reactant, be well mixed；Described hydrophobicity reactant
Preparation method is：By weight, by 12~18 parts of tung oil, 55~70 parts of isomerous tridecanol, 0.1~0.12 part of hair of sodium hydroxide
Raw alcoholysis reaction, obtains hydrophobicity reactant；The preparation method of described hydrophily reactant is：By weight, by fourth two
Amine compares 1 with NVP according to weight：5 mixing.
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, is heated to 85 DEG C of reaction 4h,
The demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
Embodiment 3
Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Hydrogel 3%, the hydroxide of parents' modification
Sodium 1%, octadecyl benzenesulfonic acid sodium 1%, polyacrylamide（Degree of hydrolysis is 25%, and molecular weight ranges are 1200~16,000,000）0.6%、
Remaining is water.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel that parents are modified is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 12%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
The preparation method for the hydrogel that described parents are modified, comprises the following steps：
1st step, by weight, by polycaprolactone, 20 parts are dissolved in 80 parts of ethyl acetate, add 3 parts of ammonium persulfate, mix
Close uniform, add 11 parts of 4 parts of hydrophobicity reactant and hydrophily reactant, be well mixed；Described hydrophobicity reactant
Preparation method is：By weight, by 16 parts of tung oil, 60 parts of isomerous tridecanol, 0.11 part of generation alcoholysis reaction of sodium hydroxide, obtain
To hydrophobicity reactant；The preparation method of described hydrophily reactant is：By weight, by butanediamine and N- vinylpyridines
Pyrrolidone compares 1 according to weight：4 mixing.
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, is heated to 82 DEG C of reaction 3h,
The demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
Reference examples 1
Difference with embodiment 3 is：Hydrophobic modification is not carried out to gel.
Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Hydrogel 3%, the hydrogen of hydrophilic modifying
Sodium oxide molybdena 1%, octadecyl benzenesulfonic acid sodium 1%, polyacrylamide（Degree of hydrolysis is 25%, and molecular weight ranges are 1200~16,000,000）
0.6%th, remaining is water.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel of hydrophilic modifying is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 12%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
The preparation method of the hydrogel of described hydrophilic modifying, comprises the following steps：
1st step, by weight, by polycaprolactone, 20 parts are dissolved in 80 parts of ethyl acetate, add 3 parts of ammonium persulfate, mix
Close uniform, add 11 parts of hydrophily reactant, be well mixed；The preparation method of described hydrophily reactant is：By weight
Part meter, compares 1 by butanediamine and NVP according to weight：4 mixing.
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, is heated to 82 DEG C of reaction 3h,
The demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of hydrophilic modifying
Glue.
Reference examples 2
Difference with embodiment 3 is：In the preparation of oil displacement agent, pre-coated is not carried out to alkaline matter, but directly by gel
After being swelled, other components are directly mixed.
Compound petroleum driving and recovering agent, is made up of following component in percentage by weight：Hydrogel 3%, the hydrogen of parents' modification
Sodium oxide molybdena 1%, octadecyl benzenesulfonic acid sodium 1%, polyacrylamide（Degree of hydrolysis is 25%, and molecular weight ranges are 1200~16,000,000）
0.6%th, remaining is water.
Resistance to high Mg2+The preparation method of the compound petroleum driving and recovering agent of salt, comprises the following steps：
S1, the hydrogel that parents are modified is ground；
S2 is swollen by the hydrogel plus part aqueous that are obtained in step S1；
Addition, alkaline matter, surfactant, polymer and remaining water in S4, then the swelling solution obtained in step s3, are mixed
Close uniform, obtain compound petroleum driving and recovering agent.
The preparation method for the hydrogel that described parents are modified, comprises the following steps：
1st step, by weight, by polycaprolactone, 20 parts are dissolved in 80 parts of ethyl acetate, add 3 parts of ammonium persulfate, mix
Close uniform, add 11 parts of 4 parts of hydrophobicity reactant and hydrophily reactant, be well mixed；Described hydrophobicity reactant
Preparation method is：By weight, by 16 parts of tung oil, 60 parts of isomerous tridecanol, 0.11 part of generation alcoholysis reaction of sodium hydroxide, obtain
To hydrophobicity reactant；The preparation method of described hydrophily reactant is：By weight, by butanediamine and N- vinylpyridines
Pyrrolidone compares 1 according to weight：4 mixing.
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, is heated to 82 DEG C of reaction 3h,
The demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
Viscosity test
Oil displacement agent viscosity to above-described embodiment and reference examples is tested.
Method of testing：Using salinity 384000mg/L, Mg2+2639mg/L stratum water is solvent, prepares the above-mentioned displacement of reservoir oil
Agent composition.Viscosity test is carried out using U.S.'s Brookfield LVDVII rotation viscometers, and 0# rotors, rotating speed is 6RPM,
Test temperature is 95 DEG C, and viscosity unit is mPas.
Interface performance is tested
Method of testing：Using salinity 384000mg/L, Mg2+2639mg/L stratum water is solvent, prepares above-mentioned oil displacement agent group
Compound.The interfacial tension of above-mentioned solution is tested using rotation drop method using TX500C interface tension test instruments, test temperature is 80
DEG C, rotating speed is 5000RPM.
Oil displacement efficiency is tested
Core oil-displacement test is carried out according to petroleum industry standard SY/T6424-2000 composite oil-displacing systems performance test methods.Base
This program is：Rock core is evacuated, and saturation stratum water-survey water phase permeability-saturation crude oil is made irreducible water-water drive and noted to aqueous 98%-
Enter chemical flooding slug (i.e. ternary composite oil-displacing composition)-subsequently turn stratum water drive to aqueous 98%.
Experimental temperature be 90 DEG C, in ternary composite oil-displacing composition, the water used for salinity 384000mg/L,
Mg2+2639mg/L stratum water.
Test result is as shown in the table：
As can be seen from the table, the oil displacement agent that the present invention is provided is in use, be particularly suitable in high Mg2+Oil under salt content
Hide, with relatively low interfacial tension, while also significantly improving recovery ratio.Embodiment 3 is contrasted with reference examples 1 as can be seen that logical
Cross and hydrophobic modification is carried out to gel, oil water interfacial tension can be effectively reduced, while Mg can also be reduced2+Salt and alkali
Reaction rate；Embodiment 3 is contrasted with reference examples 2 and can be seen that in compound oil displacement agent by the hydrogel for being modified parents
Inorganic base carry out pre-coated, then with water, surfactant, polymer carry out it is scattered after, can preferably prevent high Mg2+Salt
Influence to oil displacement efficiency, while oil water interfacial tension can be reduced.
Claims (9)
1. the preparation method for the hydrogel that a kind of parents are modified, it is characterised in that comprise the following steps：
1st step, by weight, by polycaprolactone, 15~25 parts are dissolved in 75~100 parts of ethyl acetate, add initiator
2~4 parts, it is well mixed, adds 6~12 parts of 3~5 parts of hydrophobicity reactant and hydrophily reactant, is well mixed；
2nd step, the mixed liquor that the 1st step is obtained is poured into mould, under the protection of nitrogen, be heated to 80~85 DEG C reaction 2~
4h, the demoulding；
3rd step, the gel obtained to the 2nd step is used after ethanol, water washing successively, and vacuum drying obtains the water-setting of parents' modification
Glue.
2. the preparation method for the hydrogel that parents according to claim 1 are modified, it is characterised in that described hydrophobicity is anti-
Answering the preparation method of thing is：By weight, by 12~18 parts of tung oil, 55~70 parts of fatty alcohol, base catalyst 0.1~0.12
Alcoholysis reaction occurs for part, obtains hydrophobicity reactant；Fatty alcohol is selected from isomerous tridecanol, the alcohol of isomery ten, the alcohol of isomery seven, poly- second two
One or more of mixture in alcohol or polypropylene glycol；Base catalyst be selected from sodium hydroxide, potassium hydroxide, calcium hydroxide,
Caustic alcohol, potassium ethoxide, sodium methoxide, potassium methoxide or calcium oxalate；The preparation method of described hydrophily reactant is：By weight
Meter, compares 1 by crosslinking agent and NVP according to weight：3~5 mixing；Described initiator is selected from ammonium persulfate, mistake
In potassium sulfate, sodium peroxydisulfate, hydrogen peroxide, di-t-butyl peroxide, benzoyl peroxide and suitable azo-initiator
One or more compoundings；Described crosslinking agent is ethylenediamine, butanediamine, carbodiimides, trimethylol melamine, dihydroxy
MU or aziridine.
3. the hydrogel being modified as the parents obtained by the method described in claim 1 or 2.
4. a kind of resistance to high Mg2+The compound petroleum driving and recovering agent of salt, it is characterised in that by following component institute group in percentage by weight
Into：Hydrogel 2~4.5% that parents described in claim 3 are modified, alkaline matter 0.05~1.5%, surfactant 0.2~
1.2%th, polymer 0.4~1.0%, remaining be water.
5. resistance to high Mg according to claim 42+The compound petroleum driving and recovering agent of salt, it is characterised in that described alkaline matter choosing
From in sodium hydroxide, potassium hydroxide, sodium acid carbonate, sodium carbonate, sodium metasilicate, sodium tetraborate, sodium phosphate, trimethylamine, triethylamine
One or several kinds of combinations.
6. resistance to high Mg according to claim 42+The compound petroleum driving and recovering agent of salt, it is characterised in that described surfactant
Selected from petroleum sulfonate or heavy alkylbenzene sulfonate.
7. resistance to high Mg according to claim 42+The compound petroleum driving and recovering agent of salt, it is characterised in that described polymer is water
Dissolubility polyacrylamide polymers, the degree of hydrolysis of the water-soluble polyacrylamide polymer is 20~30%, the polymer
Molecular weight is 800~24,000,000.
8. the resistance to high Mg described in claim 42+The preparation method of the compound petroleum driving and recovering agent of salt, it is characterised in that including following step
Suddenly：
S1, the hydrogel that parents are modified is ground；
S2, alkaline matter is added water and is configured to the solution of mass percent 10~15%；
In S3, the solution that the swelling behavior obtained in step S1 is obtained in step S2；
Surfactant, polymer and remaining water are added in S4, then the swelling solution obtained in step s3, is well mixed, obtains
Compound petroleum driving and recovering agent.
9. the hydrogel that the parents described in claim 1 are modified is in high Mg2+Application in the ternary composite driving finish of content oil reservoir.
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| CN110079289A (en) * | 2019-03-26 | 2019-08-02 | 中国石油大学(华东) | The polymer ternary composite oil-displacing system and its application that frozen glue dispersion is strengthened |
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| CN102690642A (en) * | 2012-05-21 | 2012-09-26 | 中国石油天然气股份有限公司 | Ternary composite oil displacement composition suitable for high-temperature high-salt oil reservoir and application thereof |
| CN104232071A (en) * | 2014-09-01 | 2014-12-24 | 中国石油天然气股份有限公司 | Nonmetal cross-linking agent for ultrahigh-temperature fracturing fluid, preparation and application |
| CN105368430A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Oil-displacing agent, preparing method of oil-displacing agent and intensified oil production method |
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| CN102690642A (en) * | 2012-05-21 | 2012-09-26 | 中国石油天然气股份有限公司 | Ternary composite oil displacement composition suitable for high-temperature high-salt oil reservoir and application thereof |
| CN105368430A (en) * | 2014-08-27 | 2016-03-02 | 中国石油化工股份有限公司 | Oil-displacing agent, preparing method of oil-displacing agent and intensified oil production method |
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| CN110079289A (en) * | 2019-03-26 | 2019-08-02 | 中国石油大学(华东) | The polymer ternary composite oil-displacing system and its application that frozen glue dispersion is strengthened |
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