CN102690642A - Ternary composite oil displacement composition suitable for high-temperature high-salt oil reservoir and application thereof - Google Patents
Ternary composite oil displacement composition suitable for high-temperature high-salt oil reservoir and application thereof Download PDFInfo
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- CN102690642A CN102690642A CN2012101592394A CN201210159239A CN102690642A CN 102690642 A CN102690642 A CN 102690642A CN 2012101592394 A CN2012101592394 A CN 2012101592394A CN 201210159239 A CN201210159239 A CN 201210159239A CN 102690642 A CN102690642 A CN 102690642A
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- oil
- polymkeric substance
- hydroxy sulfo
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- sulfo lycine
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- 239000011206 ternary composite Substances 0.000 title claims abstract description 54
- 238000006073 displacement reaction Methods 0.000 title abstract description 31
- 239000000203 mixture Substances 0.000 title abstract description 9
- 239000000126 substance Substances 0.000 claims abstract description 76
- 239000004094 surface-active agent Substances 0.000 claims abstract description 46
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- -1 hydroxy sulfo lycine Chemical compound 0.000 claims description 95
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 68
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 44
- 150000001412 amines Chemical class 0.000 claims description 34
- 229960003742 phenol Drugs 0.000 claims description 34
- 229910052799 carbon Inorganic materials 0.000 claims description 32
- 150000003839 salts Chemical class 0.000 claims description 27
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 22
- 235000017550 sodium carbonate Nutrition 0.000 claims description 22
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 229910021538 borax Inorganic materials 0.000 claims description 12
- 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 12
- 239000004328 sodium tetraborate Substances 0.000 claims description 12
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 12
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 239000001488 sodium phosphate Substances 0.000 claims description 9
- 229910000162 sodium phosphate Inorganic materials 0.000 claims description 9
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims description 9
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 235000011008 sodium phosphates Nutrition 0.000 claims description 6
- 230000033558 biomineral tissue development Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 4
- 238000006460 hydrolysis reaction Methods 0.000 claims description 4
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 4
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- GETQZCLCWQTVFV-UHFFFAOYSA-N trimethylamine Chemical compound CN(C)C GETQZCLCWQTVFV-UHFFFAOYSA-N 0.000 claims description 4
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- 239000010865 sewage Substances 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 9
- 229920000642 polymer Polymers 0.000 abstract description 9
- 238000011084 recovery Methods 0.000 abstract description 2
- FATBGEAMYMYZAF-KTKRTIGZSA-N oleamide Chemical compound CCCCCCCC\C=C/CCCCCCCC(N)=O FATBGEAMYMYZAF-KTKRTIGZSA-N 0.000 abstract 1
- FATBGEAMYMYZAF-UHFFFAOYSA-N oleicacidamide-heptaglycolether Natural products CCCCCCCCC=CCCCCCCCC(N)=O FATBGEAMYMYZAF-UHFFFAOYSA-N 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 70
- 239000002585 base Substances 0.000 description 46
- 239000000243 solution Substances 0.000 description 26
- 238000012360 testing method Methods 0.000 description 21
- 239000013543 active substance Substances 0.000 description 15
- UAUDZVJPLUQNMU-KTKRTIGZSA-N erucamide Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(N)=O UAUDZVJPLUQNMU-KTKRTIGZSA-N 0.000 description 15
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 8
- 230000001804 emulsifying effect Effects 0.000 description 7
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- 238000005516 engineering process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000000523 sample Substances 0.000 description 6
- 238000011160 research Methods 0.000 description 5
- 239000003513 alkali Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
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- 235000016068 Berberis vulgaris Nutrition 0.000 description 3
- 241000335053 Beta vulgaris Species 0.000 description 3
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- 238000002474 experimental method Methods 0.000 description 3
- 239000012190 activator Substances 0.000 description 2
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- 239000003208 petroleum Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229960003237 betaine Drugs 0.000 description 1
- 125000005518 carboxamido group Chemical group 0.000 description 1
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- AZTCHFAGUBWIOI-UHFFFAOYSA-L disodium boric acid hydrogen phosphate Chemical compound [Na+].[Na+].OB(O)O.OB(O)O.OB(O)O.OB(O)O.OP([O-])([O-])=O AZTCHFAGUBWIOI-UHFFFAOYSA-L 0.000 description 1
- 238000004945 emulsification Methods 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000015784 hyperosmotic salinity response Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
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- 229930002839 ionone Natural products 0.000 description 1
- 150000002499 ionone derivatives Chemical class 0.000 description 1
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- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
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- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
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Abstract
The invention relates to a ternary composite oil displacement composition suitable for a high-temperature high-salinity oil reservoir and application thereof. The composition for ternary complex flooding comprises the following components in percentage by weight: 0.05-0.3% of composite surfactant, 0.1-0.25% of polymer, 0.05-2.00% of alkaline substance and the balance of water; wherein the composite surfactant is composed of two hydroxysulfobetaines with different structures, and the mass ratio of the two hydroxysulfobetaines is 9: 1-4: 6. The invention also provides application of the ternary complex composition for flooding in tertiary oil recovery. The ternary oil displacement composition of the composite surfactant has high oil displacement efficiency and low price of the oleamide hydroxysulfobetaine, and can reduce the oil displacement cost.
Description
Technical field
The present invention relates to chemical combination complex oil displacing used in a kind of TOR and use compsn, particularly relate to a kind of ternary composite oil-displacing, belong to technical field of petroleum extraction with compsn and the application in TOR thereof.
Background technology
China main force oil field is main with nonmarine deposit mainly, and test in place proof chemical flooding is that one of RF dominant technology is improved in the nonmarine deposit oil field.Daqing oil field polymer flooding year incremental oil production has reached 1,000 ten thousand tons, and the amplitude that improves RF through polymer controls mobility raising swept volume reaches more than 10%.Ternary composite oil-displacing is higher than polymer flooding through the synergy raising RF amplitude of control mobility and reduction IT; The multinomial field test that Daqing oil field is carried out shows that strong base ternary composite driving oil improves RF more than 20%, and the weak base ternary composite oil-displacing improves RF more than 18%.Therefore, the complex oil displacing technology is the main means that China main force oil field increases workable reserve, is one of dominant technology of CNPC's stable crude output.
Strong base ternary composite driving oil is because the effect of alkali makes that the oil well fouling is serious, and pump detection period shortens, and the technical difficulty of oil recovery and fringe cost increase; The alkali of high density has considerable influence to the three-component compound system viscosity, in order to reach the mobility control ability of design, needs to increase the concentration of polymkeric substance in the formula system, thereby has increased the cost of oil-displacing agent; The emulsification of complex oil displacing output liquid is serious, the processed difficulty is big.Therefore, complex oil displacing an important development trend is weak baseization.
Most widely used anionic and non-ionics in the TOR because salt tolerance and temperature tolerance are poor, can not be applicable to high temperature and high salt oil deposit.At present, both at home and abroad the displacement of reservoir oil is mainly concentrated on negatively charged ion one nonionogenic tenside and two aspects of twin tensio-active agent with the research of temperature resistant antisalt tensio-active agent.Yet cloudy non-type tensio-active agent and twin tensio-active agent synthesis technique are comparatively complicated, and cost is higher.Therefore, the temperature resistant antisalt tensio-active agent of development Cheap highly effective is very necessary.
Have positively charged ion, anionicsite in the zwitterionics molecule simultaneously; Can form inner salt; Insensitive to ionogen, good stability in hard water, lime soap dispersing power are arranged, and micelle-forming concentration is low; Thereby for the oil reservoir of high salinity, high-temperature, amphoterics is important, as to have a potentiality research direction.The betaine type amphoteric surfactant intramolecularly has strong basicity N atom; Its amphoteric character does not rely on the pH value; Iso-electric point zone solubleness no change; And beet alkali surface activator output in amphoterics is maximum, technology is the most ripe, and is more promising in TOR, but it is less relatively to have a correlative study report of beet alkali surface activator of temperature resistant antisalt performance.
Patent of invention " a kind of phosphinylidyne-containing amine group hydroxy sulfo lycine and preparation and application " (application number 2010101304082) discloses a kind of novel beet bases zwitterionics; The binary, the ternary system that wherein disclose erucicamide hydroxy sulfo lycine composition all can reach ultra low interfacial tension; But the synthetic employing erucic acid of this trimethyl-glycine is a raw material; Its cost is very high; And the binary of processing as tensio-active agent with the erucicamide hydroxy sulfo lycine merely, its IT of ternary system went up after 1 hour to some extent, after 105 minutes, can not reach ultra low interfacial tension.Therefore, adopt cheap amine hydroxybenzene hydroxy sulfo lycine to substitute the higher erucicamide hydroxy sulfo lycine of price, and the amine hydroxybenzene hydroxy sulfo lycine is carried out composite research, improve its interface performance.
Summary of the invention
For solving the problems of the technologies described above; The purpose of this invention is to provide a kind of ternary composite oil-displacing of high temperature and high salt oil deposit that is applicable to and use compsn; With the composite formation complexed surfactant of different hydroxy sulfo lycines; When reaching ultra low interfacial tension, reduce cost, overcome the defective that long-time rear interface tension force gos up.
For achieving the above object, the present invention at first provides a kind of ternary composite oil-displacing of high temperature and high salt oil deposit that is applicable to use compsn, and in the gross weight of this ternary composite oil-displacing with compsn, it is grouped into by following one-tenth:
Complexed surfactant, 0.05%-0.3%, polymkeric substance, 0.1%-0.25%, alkaline matter, 0.05%-2.00%, all the other are water; Wherein, complexed surfactant is made up of hydroxy sulfo lycine with the structure shown in the formula 1 and the hydroxy sulfo lycine with the structure shown in the formula 2, and the mass ratio of the two is 9: 1-4: 6;
In the formula 1, n is 17-21, and R is methyl or ethyl;
In the formula 2, R
1Be C
12-C
18Any one alkyl, R
2Be methyl or ethyl.
According to specific embodiments of the present invention, preferably, the above-mentioned binary alkali-free complex oil displacing of high temperature and high salt oil deposit that is applicable to is used compsn, and wherein, the hydroxy sulfo lycine with the structure shown in the formula 1 is an amine hydroxybenzene base hydroxy sulfo lycine, and structural formula is:
Hydroxy sulfo lycine with the structure shown in the formula 2 is a carbon octadecyl dimethyl-hydroxy sulfo lycine, and structural formula is:
According to specific embodiments of the present invention, preferably, above-mentioned ternary composite oil-displacing uses high temperature and high salt oil deposit that compsn is suitable for to be temperature>=75 ℃, the total mineralization>=20000mg/L of water, Ca
2+And Mg
2+The oil reservoir of content>=1000mg/L.Above-mentioned high temperature and high salt oil deposit can be that temperature is that 75 ℃-95 ℃, the total mineralization of water are 20000-100000mg/L, Ca
2+And Mg
2+Content is the oil reservoir of 1000-10000mg/L.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in; Preferably; The weight percent of complexed surfactant is 0.1%-0.3%; The weight percent of polymkeric substance is 0.1%-0.2%, and the total amount per-cent of alkaline matter is 0.1%-1.00%, and the mass ratio of amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine is 8: 2-6: 4.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in; Preferably; The polymkeric substance that is adopted is water-soluble polyacrylamide polymkeric substance and/or star temperature resistant antisalt polymkeric substance; Water-soluble polyacrylamide polymkeric substance hydrolysis degree scope is 20%-30%, and star temperature resistant antisalt polymkeric substance hydrolysis degree scope is 1%-5%.More preferably, above-mentioned polymkeric substance is a star temperature resistant antisalt polymkeric substance, the star temperature resistant antisalt polymkeric substance that the embodiment 3 of for example No. 201010565501.6 Chinese invention patent applications is provided.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in, preferably, the molecular weight of the polymkeric substance that is adopted is 3,000,000 to 3,500 ten thousand.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in; Preferably, the alkaline matter that is adopted is one or several in sodium hydroxide, Pottasium Hydroxide, sodium hydrogencarbonate, yellow soda ash, water glass, sodium tetraborate, sodium phosphate, Trimethylamine 99 and the triethylamine etc.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in, preferably, water is that sewage, local water or clear water etc. are injected in the oil field.The salinity of the water that the present invention adopted is preferably less than 200000mg/L.
The ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit provided by the invention with compsn in; Preferably, the weight percent of complexed surfactant is 0.2%, and the weight percent of polymkeric substance is 0.2%; The weight percent of alkaline matter is 0.2%; The mass ratio of amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine is 7: 3, and polymkeric substance is a star temperature resistant antisalt polymkeric substance, and alkaline matter is yellow soda ash or sodium tetraborate etc.
Above-mentioned ternary composite oil-displacing provided by the invention can prepare according to following steps with compsn:
Take by weighing the polymer dry powder of certain mass, the water configuration obtains polymer mother liquor, and slaking is after 24 hours; Complexed surfactant, alkaline matter and polymer mother liquor mixed preparing are obtained ternary composite oil-displacing use compsn.
The present invention also provides the above-mentioned ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit with the application of compsn in TOR.Through adopting this ternary composite oil-displacing to use compsn, can obtain higher oil displacement efficiency.
According to specific embodiments of the present invention, preferably, above-mentioned compsn is the oil reservoir that is used to meet the following conditions: temperature>=75 ℃, the total mineralization>=20000mg/L of water, Ca
2+And Mg
2+The oil reservoir of content>=1000mg/L.Above-mentioned high temperature and high salt oil deposit can be that temperature is that 75 ℃-95 ℃, the total mineralization of water are 20000-100000mg/L, Ca
2+And Mg
2+Content is the oil reservoir of 1000-10000mg/L.
The ternary composite driving compsn that is applicable to high temperature and high salt oil deposit provided by the invention adopts the complexed surfactant of the different composite formation of hydroxy sulfo lycine; Its interface performance has surpassed simple with the performance of erucicamide hydroxy sulfo lycine as tensio-active agent; Reached ultra low interfacial tension; Its IT can maintain ultralow state in long-time back simultaneously, can also reduce cost for oil production.Not only interface performance is good for the ternary composite driving compsn that is applicable to high temperature and high salt oil deposit provided by the invention, and emulsifying property is also very good.
The rock core oil displacement experiment shows; The oil displacement efficiency of the ternary displacement of reservoir oil compsn of the complexed surfactant that employing amine hydroxybenzene base hydroxy sulfo lycine provided by the invention and carbon octadecyl dimethyl-hydroxy sulfo lycine are composite is high; And amine hydroxybenzene hydroxy sulfo lycine price is low, can reduce displacement of reservoir oil cost.
Description of drawings
Fig. 1 is the IT test result figure among the embodiment 1.
Embodiment
To understand in order technical characterictic of the present invention, purpose and beneficial effect being had more clearly, technical scheme of the present invention is carried out following detailed description, but but can not be interpreted as qualification at present practical range of the present invention.
The test of embodiment 1 interface performance
Present embodiment to adopt carbon octadecyl dimethyl-hydroxy sulfo lycine, amine hydroxybenzene base hydroxy sulfo lycine, erucicamide base hydroxy sulfo lycine as the displacement of reservoir oil of tensio-active agent with compsn with adopt amine hydroxybenzene base hydroxy sulfo lycine and the ternary composite oil-displacing of the complexed surfactant of carbon octadecyl dimethyl-hydroxy sulfo lycine composition has carried out interface performance research with compsn; Wherein, the structure of above-mentioned amine hydroxybenzene base hydroxy sulfo lycine, erucicamide base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine difference (hydroxy sulfo lycine of following examples is identical with the hydroxy sulfo lycine here) as follows:
Amine hydroxybenzene base hydroxy sulfo lycine:
Erucicamide base hydroxy sulfo lycine:
Carbon octadecyl dimethyl-hydroxy sulfo lycine:
TP: the local water that adopts salinity 84000mg/L; Preparation carbon octadecyl dimethyl-hydroxy sulfo lycine, polymkeric substance and concentration of sodium carbonate are respectively the solution of 0.2wt%; Obtain adopting carbon octadecyl dimethyl-hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent; Wherein, polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided).
Adopt the local water of salinity 84000mg/L; Preparation oleic acid carboxamido-group hydroxy sulfo lycine, polymkeric substance and concentration of sodium carbonate are respectively the solution of 0.2wt%; Obtain adopting amine hydroxybenzene base hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent; Wherein, polymkeric substance adopts star temperature resistant antisalt polymkeric substance.
Adopt the local water of salinity 84000mg/L to prepare the solution that erucicamide base hydroxy sulfo lycine, polymkeric substance and concentration of sodium carbonate are 0.2wt%; Obtain adopting erucicamide base hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent; Wherein, polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided);
Carbon octadecyl dimethyl-hydroxy sulfo lycine=8: 2), local water and the polymer formulation of salinity 84000mg/L obtain the solution that complexed surfactant concentration is 0.2wt% adopt complexed surfactant (amine hydroxybenzene base hydroxy sulfo lycine:; Obtain adopting the ternary composite oil-displacing of complexed surfactant to use compsn; Wherein, Polymkeric substance adopts star temperature resistant antisalt polymkeric substance, and concentration is 0.2wt%; Alkaline matter adopts yellow soda ash, and concentration is 0.2wt%.
Utilize TX500C IT determinator to adopt the rotation method of dripping to test the IT of above-mentioned two kinds of displacement of reservoir oils with compsn, probe temperature is 80 ℃, and rotating speed is 5000RPM, and the result is as shown in Figure 1.Wherein, The curve A representative adopts carbon octadecyl dimethyl-hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent; The curve B representative adopts amine hydroxybenzene base hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent; The curve C representative adopts erucicamide base hydroxy sulfo lycine to use compsn as the displacement of reservoir oil of tensio-active agent, and the curve D representative adopts amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine to use compsn as the binary alkali-free complex oil displacing of complexed surfactant.
Can find out by Fig. 1, adopt carbon octadecyl dimethyl-hydroxy sulfo lycine within 120 minutes, can not reach ultra low interfacial tension separately; Adopt amine hydroxybenzene base hydroxy sulfo lycine to go up to some extent with compsn IT after 45 minutes as the displacement of reservoir oil of tensio-active agent separately, IT can not reach ultralow after 60 minutes; Adopt the displacement of reservoir oil of erucicamide base hydroxy sulfo lycine to go up to some extent with compsn IT after 90 minutes, IT can not reach ultralow after 105 minutes; And the ternary composite oil-displacing of employing complexed surfactant is with compsn not resilience of IT within 120 minutes; Keep ultralow always; And its IT is lower; Therefore; The ternary composite oil-displacing that adopts the composite complexed surfactant of amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine can overcome the problem of independent employing amine hydroxybenzene base hydroxy sulfo lycine or the long-time rear interface tension force rise of erucicamide base hydroxy sulfo lycine with compsn, also can solve independent employing carbon tetradecyl dimethyl-hydroxy sulfo lycine can't reach the problem of ultralow IT, interface performance is better.
Embodiment 2 complexed surfactant ratio optimizations
Present embodiment has carried out interface performance research to the complexed surfactant of being made up of amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine.Above-mentioned complexed surfactant is the amine hydroxybenzene base hydroxy sulfo lycine and the carbon octadecyl dimethyl-hydroxy sulfo lycine of different mass ratio.
Testing method: adopting local water, polymkeric substance, alkaline matter and the complexed surfactant preparation complexed surfactant concentration of salinity 84000mg/L is the solution of 0.2wt%; The polymkeric substance that is added adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided), and concentration is 0.2wt%; Alkaline matter adopts yellow soda ash, and concentration is 0.2wt%.Utilize TX500C IT determinator to adopt rotation to drip the IT that method is tested above-mentioned solution, probe temperature is 80 ℃, and rotating speed is 5000RPM, and test result is as shown in table 1.
Table 1 IT test result
| Amine hydroxybenzene base hydroxy sulfo lycine: carbon octadecyl dimethyl-hydroxy sulfo lycine | IT, mN/m |
| 9∶1 | 8.34×10 -3 |
| 8∶2 | 6.91×10 -3 |
| 7∶3 | 4.57×10 -3 |
| 6∶4 | 5.79×10 -3 |
| 5∶5 | 7.86×10 -3 |
| 4∶6 | 9.05×10 -3 |
Can find out by table 1, within the proportional range of listing, adopt the solution of complexed surfactant all can reach ultra low interfacial tension; And when amine hydroxybenzene base hydroxy sulfo lycine: during carbon octadecyl dimethyl-hydroxy sulfo lycine=7: 3, the IT value is minimum to be 4.57 * 10
-3MN/m.Therefore, optimize best proportioning, amine hydroxybenzene base hydroxy sulfo lycine: the mass ratio of carbon octadecyl dimethyl-hydroxy sulfo lycine is 7: 3.
Present embodiment is tested with the influence of the viscosity of compsn ternary composite oil-displacing polymkeric substance.
Testing method: adopt (ASP) ternary system solution of local water preparation alkaline matter/polymkeric substance/complexed surfactant of salinity 84000mg/L, promptly ternary composite oil-displacing is used compsn, and wherein, alkaline matter adopts yellow soda ash, and concentration is 0.2wt%; Complexed surfactant is amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine, and the two mass ratio is 7: 3, and the concentration of complexed surfactant is 0.2wt%; Adopt three kinds of polymkeric substance to carry out the preparation of solution respectively, its physical and chemical index is as shown in table 2, and concentration is 0.2%.Viscosity test adopts U.S. Brookfield LVDVII rotational viscosimeter to carry out, and 0# rotor, rotating speed are 6RPM, and probe temperature is 95 ℃, and experimental result is as shown in table 3, and viscosity unit is mPas.
Can find out by table 3, three kinds of polymkeric substance contrasts, the viscosity of the solution of employing star temperature resistant antisalt polymkeric substance is the highest, and correlated performance of this this star temperature resistant antisalt polymkeric substance of explanation is better.
Table 2 polymkeric substance physical and chemical index
Table 3 viscosity test result
| Ternary system solution | |
| Polymkeric substance 1 | 8.6 |
| Polymkeric substance 2 | 7.8 |
| |
6.8 |
The test of embodiment 4 interface performances
Present embodiment is tested with the interface performance of compsn ternary composite oil-displacing alkaline matter.
Testing method: the ternary system solution that adopts local water configuration alkaline matter/polymkeric substance/complexed surfactant of salinity 84000mg/L; Be that ternary composite oil-displacing is used compsn; Wherein, Alkaline matter adopts sodium hydroxide, Pottasium Hydroxide, sodium hydrogencarbonate, yellow soda ash, water glass, sodium tetraborate, sodium phosphate, and concentration is 0.2wt%; Complexed surfactant is amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine, and the mass ratio of the two is 7: 3, and the concentration of complexed surfactant is 0.2wt%; Polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided), and concentration is 0.2wt%.Utilize TX500C IT determinator to adopt rotation to drip the IT that method is tested above-mentioned solution, probe temperature is 80 ℃, and rotating speed is 5000RPM, and experimental result is as shown in table 4.
Can find out by table 4; Adopting different alkaline matters: when sodium hydroxide, Pottasium Hydroxide, sodium hydrogencarbonate, yellow soda ash, water glass, sodium tetraborate, sodium phosphate, the ternary system solution of alkaline matter/polymkeric substance/complexed surfactant all can reach ultra low interfacial tension.Because there are problems such as formation damage and pipeline corrosion in the strong base ternary chemical displacement of reservoir oil; Therefore, alkaline matter of the present invention preferably adopts weak base yellow soda ash, water glass, sodium tetraborate, sodium phosphate etc., wherein; The IT value of the solution of employing yellow soda ash and sodium tetraborate is lower, and performance is better relatively.
Table 4 IT test result
| Alkaline matter | IT, mN/m |
| Sodium hydroxide | 6.03×10 -3 |
| Pottasium Hydroxide | 3.94×10 -3 |
| Sodium hydrogencarbonate | 5.81×10 -3 |
| Yellow soda ash | 2.73×10 -3 |
| Water glass | 8.22×10 -3 |
| Sodium tetraborate | 2.57×10 -3 |
| Sodium phosphate | 7.24×10 -3 |
The test of embodiment 5 emulsifying properties
Present embodiment is tested with the emulsifying property of compsn the ternary composite oil-displacing that adopts complexed surfactant.
Testing method: local water preparation alkaline matter/polymkeric substance/complexed surfactant (ASP) ternary system solution that adopts salinity 84000mg/L; Be that ternary composite oil-displacing is used compsn; Wherein, alkaline matter adopts yellow soda ash, water glass, sodium tetraborate, sodium phosphate, and concentration is 0.2wt%; Complexed surfactant is amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine, and the mass ratio of the two is 7: 3, and the concentration of complexed surfactant is 0.2wt%; Polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided), and concentration is 0.2wt%;
(under 95 ℃, 21.4MPa condition, viscosity of crude was 0.85mPa.s with crude oil according to 1: 1 water oil ratio; Saturated hydrocarbon content is 52%, and aromaticity content is 43%) and prepare the solution that obtains and mix, pour air-tight bottle into;
Adopt the reciprocating type isothermal vibration device of HZ-8812S water-bath, shook 6 hours with the speed of 90rpm, leave standstill and observe the system layering situation after 72 hours, probe temperature is 80 ℃, and experimental result is as shown in table 5.
Table 5 emulsifying property test result
| Alkaline matter | Yellow soda ash | Water glass | Sodium tetraborate | Sodium phosphate |
| Middle phase micro-emulsified liquid amasss content, % | 23 | 15 | 19 | 11 |
Can find out that by table 5 for the ternary system solution of lower concentration, all there is middle phase micro-emulsified liquid in system when adopting different types of weak base, has the good emulsifying performance.The middle phase micro-emulsified liquid proportion of the ASP ternary system solution of employing yellow soda ash is the highest by 23%; Adopt the ASP ternary system solution of sodium tetraborate to take second place; Adopt the ASP ternary system solution middle phase micro-emulsified liquid proportion minimum 11% of sodium phosphate; This moment, the profit system formed doubly-linked ideotype microemulsion, and the microemulsion type is the WinsorIII type.Middle phase micro-emulsified liquid has not only the peculiar property of can solubilisation oils but also can solubilising water, and and oil phase and water between IT reach extremely low.Middle phase micro-emulsified liquid proportion is high more, shows that emulsifying capacity is strong more, and therefore, the emulsifying capacity of the ASP ternary system solution of employing yellow soda ash is the strongest, adopts the ASP ternary system solution of sodium tetraborate to take second place, and adopts the ASP ternary system solution of sodium phosphate the poorest.
Interface performance test under the embodiment 6 different alkaline material concentration conditions
Present embodiment is tested with the interface performance of compsn the ternary composite oil-displacing under the alkaline material concentration condition of difference.
Testing method: adopt local water preparation alkaline matter/polymkeric substance/complexed surfactant (ASP) ternary system solution of salinity 84000mg/L, promptly ternary composite oil-displacing is used compsn; Wherein, alkaline matter adopts yellow soda ash, and concentration is 0.2wt%-2.0wt%; Complexed surfactant is amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine, and the mass ratio of the two is 7: 3, and the concentration of complexed surfactant is 0.1wt%-0.3wt%; Polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 Chinese invention patent applications is provided), and concentration is 0.2wt%; Utilize TX500C IT determinator to adopt rotation to drip the IT that method is tested above-mentioned solution, probe temperature is 80 ℃, and rotating speed is 5000RPM, and experimental result is as shown in table 6.
Table 6 IT test result
Can be found out that by table 6 concentration of sodium carbonate is in the 0.2wt%-1.5wt% scope, ternary composite oil-displacing all can reach ultra low interfacial tension with compsn, has interfacial activity preferably.
The test of embodiment 7 oil displacement efficiencies
Present embodiment adopts the rock core oil displacement experiment that ternary composite oil-displacing is tested with the oil displacement efficiency of compsn.
The rock core oil displacement experiment carries out according to petroleum industry standard SY/T 6424-2000 composite oil-displacing system performance test methods.Base program is: rock core is found time, and saturated local water-survey water phase permeability-saturated crude oil is made irreducible water-water drive to moisture 98%-injection chemical flooding slug (being that compsn is used in the displacement of reservoir oil)-follow-up commentaries on classics local water and is driven to moisture 98%.
Experimental temperature is 90 ℃; The displacement of reservoir oil with compsn in; The water that is adopted is the local water of salinity 84000mg/L; Table agent 1 alive is a carbon octadecyl dimethyl-hydroxy sulfo lycine, and table agent 2 alive is an amine hydroxybenzene base hydroxy sulfo lycine, and the agent 3 of showing to live is an erucicamide base hydroxy sulfo lycine; Complexed surfactant is amine hydroxybenzene base hydroxy sulfo lycine and carbon octadecyl dimethyl-hydroxy sulfo lycine (mass ratio of the two is 7: 3), and polymkeric substance adopts star temperature resistant antisalt polymkeric substance (the star temperature resistant antisalt polymkeric substance that the embodiment 3 of No. 201010565501.6 applications for a patent for invention provides).Experimental result is as shown in table 7.
Table 7 oil displacement efficiency evaluation result
Can find out by table 7; Adopt simple single polymers system after carrying out water drive, further to improve RF and be merely 14.43%; It is 17.35% that the ASP ternary composite oil-displacing of employing carbon octadecyl dimethyl-hydroxy sulfo lycine uses compsn after water drive, to improve RF; It is 18.17% that the ASP ternary composite oil-displacing of employing amine hydroxybenzene base hydroxy sulfo lycine uses compsn after water drive, to improve RF; Adopting the ASP ternary composite oil-displacing of erucicamide base hydroxy sulfo lycine to use compsn after water drive, to improve RF is 19.64%, and the ASP ternary composite oil-displacing of employing complexed surfactant, yellow soda ash improves RF with compsn and can reach 26.16% after water drive.Therefore, the oil displacement efficiency of ternary composite driving oil compsns is higher than monobasic system; Use compsn for the ASP ternary composite oil-displacing; Adopt the better effects if of complexed surfactant than simple carbon octadecyl dimethyl-hydroxy sulfo lycine, amine hydroxybenzene base hydroxy sulfo lycine, erucicamide base hydroxy sulfo lycine raising RF, the ternary composite oil-displacing of employing complexed surfactant carries out displacement of reservoir oil operation with compsn and has more advantage.
Claims (10)
1. the ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit is used compsn; In the gross weight of this ternary composite oil-displacing with compsn; It is grouped into by following one-tenth: complexed surfactant, 0.05%-0.3%; Polymkeric substance, 0.1%-0.25%, alkaline matter, 0.05%-2.00%, all the other are water; Wherein, said complexed surfactant is made up of hydroxy sulfo lycine with the structure shown in the formula 1 and the hydroxy sulfo lycine with the structure shown in the formula 2, and the mass ratio of the two is 9: 1-4: 6;
In the formula 1, n is 17-21, and R is methyl or ethyl;
In the formula 2, R
1Be C
12-C
18Any one alkyl, R
2Be methyl or ethyl.
2. the ternary composite oil-displacing of high temperature and high salt oil deposit that is applicable to according to claim 1 is used compsn, and wherein, said hydroxy sulfo lycine with the structure shown in the formula 1 is an amine hydroxybenzene base hydroxy sulfo lycine, and structural formula is:
Said hydroxy sulfo lycine with the structure shown in the formula 2 is a carbon octadecyl dimethyl-hydroxy sulfo lycine, and structural formula is:
3. the ternary composite oil-displacing of high temperature and high salt oil deposit that is applicable to according to claim 2 is used compsn; Wherein, The weight percent of said complexed surfactant is 0.1%-0.3%; The weight percent of said polymkeric substance is 0.1%-0.2%, and the total amount per-cent of said alkaline matter is 0.1%-1.00%, and the mass ratio of said amine hydroxybenzene base hydroxy sulfo lycine and said carbon octadecyl dimethyl-hydroxy sulfo lycine is 8: 2-6: 4.
4. use compsn according to claim 1 or the 3 described ternary composite oil-displacings of high temperature and high salt oil deposit that are applicable to; Wherein, Said polymkeric substance is water-soluble polyacrylamide polymkeric substance and/or star temperature resistant antisalt polymkeric substance; The degree of hydrolysis of said water-soluble polyacrylamide polymkeric substance is 20%-30%, and the degree of hydrolysis of said star temperature resistant antisalt polymkeric substance is 1%-5%; Preferably, the molecular weight of said polymkeric substance is 3,000,000 to 35,000,000.
5. use compsn according to claim 1 or the 4 described ternary composite oil-displacings of high temperature and high salt oil deposit that are applicable to; Wherein, said alkaline matter is one or several in sodium hydroxide, Pottasium Hydroxide, sodium hydrogencarbonate, yellow soda ash, water glass, sodium tetraborate, sodium phosphate, Trimethylamine 99 and the triethylamine.
6. the ternary composite oil-displacing of high temperature and high salt oil deposit that is applicable to according to claim 1 is used compsn, and wherein, said water is that sewage, local water or clear water are injected in the oil field, and the salinity of said water is less than 200000mg/L.
7. use compsn according to claim 1 or the 3 described ternary composite oil-displacings of high temperature and high salt oil deposit that are applicable to; Wherein, The weight percent of said complexed surfactant is 0.2%; The weight percent of said polymkeric substance is 0.2%, and the weight percent of said alkaline matter is 0.2%, and the mass ratio of said amine hydroxybenzene base hydroxy sulfo lycine and said carbon octadecyl dimethyl-hydroxy sulfo lycine is 7: 3; Said polymkeric substance is a star temperature resistant antisalt polymkeric substance, and said alkaline matter is yellow soda ash or sodium tetraborate.
8. each described ternary composite oil-displacing that is applicable to high temperature and high salt oil deposit of claim 1-7 is with the application of compsn in TOR.
9. application according to claim 8, wherein, said compsn is the oil reservoir that is used to meet the following conditions: temperature>=75 ℃, the total mineralization>=20000mg/L of water, Ca
2+And Mg
2+The oil reservoir of content>=1000mg/L.
10. according to Claim 8 or 9 described application, wherein, said high temperature and high salt oil deposit is that temperature is 75 ℃-95 ℃ a oil reservoir.
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