CN101255127B - Synthesis of aliphatic alcohol polyoxyethylene sulfonate and complex formulation used for tertiary oil recovery displacement agent - Google Patents
Synthesis of aliphatic alcohol polyoxyethylene sulfonate and complex formulation used for tertiary oil recovery displacement agent Download PDFInfo
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- CN101255127B CN101255127B CN2008100235181A CN200810023518A CN101255127B CN 101255127 B CN101255127 B CN 101255127B CN 2008100235181 A CN2008100235181 A CN 2008100235181A CN 200810023518 A CN200810023518 A CN 200810023518A CN 101255127 B CN101255127 B CN 101255127B
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- alcohol polyoxyethylene
- aliphatic alcohol
- sulfonate
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Abstract
The invention relates to synthesis of polyoxyethylene fatty alcohol ether sulphonate, and complex formulation for tertiary oil recovery displacement agent, and belongs to chemical displacement agent technic field. The invention discloses a synthesis method of a surface active agent for tertiary oil recovery for a high-temperature, high salinity and high calcium and magnesium ion oil reservoir, and complex formulation for highly effective displacement agents. Polyoxyethylene fatty alcohol ether sulphate is reacted with a sulfonating agent under the action of catalyst to produce polyoxyethylenefatty alcohol ether sulphonate. Polyoxyethylene fatty alcohol ether sulphonate are used as main material which is complex formulated with heavy alkyl benzene sulfonate, water, polymerisate, etc. Compared with existing products, the displacement agent of the invention in the three-high system reduces the oil-water boundary tension ultra-low (10<-3>mN/m), and the boundary tension is not affected bytemperature, degree of mineralization and the concentration of calcium and magnesium ions.
Description
Technical field
The invention discloses the synthetic of a kind of aliphatic alcohol polyoxyethylene sulfonate and be used for the composite of tertiary oil recovery oil-displacing agent, belong to the chemical oil displacement agent technical field.The aliphatic alcohol polyoxyethylene sulfonate of preparation is applied to high-efficient oil-displacing agent composite of three height (high temperature, high salinity, high contents of calcium and magnesium ion) oil reservoir used for tertiary oil recovery, improves the oil recovery factor of " three height " oil reservoir.
Background technology
Since last century the seventies first oil crisis, the research that improves oil recovery is attached great importance in countries in the world.Ternary composite driving is a kind of method that improves oil recovery factor that generally use in present each oil field.Three-component compound system is tensio-active agent, polymkeric substance and alkali systems.But wherein contained a large amount of alkali bring huge injury near oil reservoir the oil field and oil well.
Again because the environment of subsurface deposit is very complicated, a lot of oil reservoirs are in that (total mineralization as Chinese oil field part oil reservoir reaches 50000mg/L, high valence ion Ca under high temperature, high salinity, the high contents of calcium and magnesium ion condition
2+, Mg
2+Content reaches 2500mg/L, and temperature reaches 85 ℃), this just requires tensio-active agent will have fine heatproof, salt tolerant, anti-high valence ion ability.The tensio-active agent that has been used at present tertiary oil recovery has and layering much takes place in high salinity, high contents of calcium and magnesium ionic underground water easily or have precipitation to generate; Nonionic-phosphate ester salt type [R (CH
2CH
2O) nPO
3M], nonionic-sulfuric acid type [R (CH
2CH
2O) nSO
3M], nonionic-carboxylate salts type [R (CH
2CH
2O) nCH
2COOM], all not heatproof, at high temperature facile hydrolysis.
Summary of the invention
The purpose of this invention is to provide the composite of a kind of synthetic method that is applied to three height (high temperature, high salinity, high contents of calcium and magnesium ion) oil reservoir used for tertiary oil recovery tensio-active agent and high-efficient oil-displacing agent.
Technical scheme of the present invention: a kind of synthetic method of aliphatic alcohol polyoxyethylene sulfonate, fatty alcohol polyoxyethylene ether sulfate, water, catalyzer, sulphonating agent are placed reactor by proportioning, the reaction some hrs, take out when being chilled to 50 ℃ slightly, concentrating under reduced pressure goes portion water, adds certain amount of organic solvent in the mixture and carries out desalination, leave standstill, the inorganic salt of filtering precipitating reclaim solvent, get the finished product aliphatic alcohol polyoxyethylene sulfonate;
Sulphonating agent is selected Na for use
2SO
3Or NaHSO
3
Catalyzer is selected transition metal ion for use: the muriate of zinc, manganese, copper, iron, titanium, zirconium or vanadium; Catalyst levels is the 0.2%-0.4% of reactant total mass;
Fatty alcohol polyoxyethylene ether sulfate (AES) with sulphonating agent mole proportioning is: 1: 1.0-2.2, and 120 ℃-200 ℃ of temperature of reaction, the reaction times is 3h-6h;
Desalination is selected for use with organic solvent: methyl alcohol, ethanol, Virahol, methylene dichloride, trichloromethane or toluene.
Fatty alcohol polyoxyethylene ether sulfate and sulphonating agent mole proportioning are 1: 1.2-1.6 is better.
Temperature of reaction is chosen as 150 ℃-170 ℃.
Reaction times is 4h.
Desalination is selected the Virahol best results for use with organic solvent.
The application of synthetic aliphatic alcohol polyoxyethylene sulfonate of the present invention is used for the composite of tertiary oil recovery high-efficient oil-displacing agent, and by weight percentage, this oil-displacing agent is composed of the following components:
Aliphatic alcohol polyoxyethylene sulfonate 60%-70%,
Heavy alkylbenzene sulfonate 10%-20%,
Water-soluble polyacrylamide 1%-2%,
Water 10%-25%.
Preparation method:
(1) at normal temperatures and pressures, 50% of aliphatic alcohol polyoxyethylene sulfonate, Total Water adds reactor, fully stirs 1-2h;
(2) remaining 50% water, water-soluble polyacrylamide, heavy alkylbenzene sulfonate are stirred, stir 0.5-1h;
(3) material with (2) joins in the material of (1), stirs 1.5-2h and gets the highly efficiency compositional oil-displacing agent.
Described highly efficiency compositional oil-displacing agent, described aliphatic alcohol polyoxyethylene sulfonate are negatively charged ion-nonionic surface active agent, and the fatty carbon chain number of this sulfonate is 8-22, and average EO number is 1-12;
Described heavy alkylbenzene sulfonate is an anion surfactant, and this heavy alkylbenzene sulfonate alkyl carbon chain number is 8-24.
Described highly efficiency compositional oil-displacing agent, the fatty carbon chain number of described aliphatic alcohol polyoxyethylene sulfonate is 10-15, average EO number is 3-7.
Described heavy alkylbenzene sulfonate alkyl carbon chain number is 14-18.
Described highly efficiency compositional oil-displacing agent is for high temperature, high salinity, the application of high contents of calcium and magnesium ionic oil field in tertiary oil recovery, and this highly efficiency compositional oil-displacing agent can not produce precipitation and oil water interfacial tension reaches 10
-3-10
-4MN/m improves oil recovery factor.
Beneficial effect of the present invention: above-mentioned with alkali and tensio-active agent instability problem in order to solve, the present invention has developed a kind of not only anti-high salinity, the ion of anti-high contents of calcium and magnesium the but also resistant to elevated temperatures used for tertiary oil recovery tensio-active agent.This tensio-active agent and heavy alkylbenzene sulfonate, polyacrylamide are re-dubbed binary combination flooding, under high temperature, high salinity, high contents of calcium and magnesium ion condition, do not need to add alkali, and its oil water interfacial tension just can reach ultralow and layering not take place or do not have precipitation and generate.
Used tensio-active agent all is a sulfonate in this highly efficiency compositional oil-displacing agent system, and the two similar performance is difficult for taking place in the stratum " chromatographic separation ".The most general using method in oil field is that nonionic and anion surfactant is composite now, but this flooding system in the stratum serious " chromatographic separation " can take place, thereby can't realize its optimal design.Highly efficiency compositional oil-displacing agent good stability of the present invention, oil-displacement capacity are strong.During use, oil-displacing agent and polyacrylamide polymers form the binary displacement oil system, improve sweep efficiency, the absorption of minimizing oil-displacing agent on formation rock with the visco-elasticity of polyacrylamide polymers.Reduction interfacial tension ability and solubilising with oil-displacing agent of the present invention improve displacement efficiency.The two synergy can not extraction the irreducible oil extraction.
Embodiment
Embodiment 1: aliphatic alcohol polyoxyethylene sulfonate synthetic
With 1mol fatty alcohol polyoxyethylene ether sulfate (70%) 600g, 900g water, 1.4mol Na
2SO
3176.4g, 2.5g cupric chloride, 2.5g Manganous chloride tetrahydrate place reactor, reaction is 4 hours under 165-170 ℃ of condition, take out the cooling back, underpressure distillation removes the 700g that anhydrates, and adds 2000g Virahol, standing over night in the mixture, the inorganic salt that filtering is precipitated out, solvent evaporated obtains finished product 450g.By two phase titrations, the content of aliphatic alcohol polyoxyethylene sulfonate is 87%.
Embodiment 2: aliphatic alcohol polyoxyethylene sulfonate synthetic
With 1mol fatty alcohol polyoxyethylene ether sulfate (70%) 600g, 900g water, 1.3mol NaHSO
3135.2g, 2.5g titanium chloride, 2.5g zinc chloride place reactor, reaction is 4 hours under 155-160 ℃ of condition, take out the cooling back, underpressure distillation removes the 700g that anhydrates, and adds 2000g Virahol, standing over night in the mixture, the inorganic salt that filtering is precipitated out, solvent evaporated obtains finished product 440g.By two phase titrations, the content of aliphatic alcohol polyoxyethylene sulfonate is 85%.
Embodiment 3: aliphatic alcohol polyoxyethylene sulfonate synthetic
With 1mol fatty alcohol polyoxyethylene ether sulfate (70%) 600g, 900g water, 1.5mol Na
2SO
3189g, 2.5g titanium chloride, 2.5g vanadium chloride place reactor, and reaction is 4 hours under 160-165 ℃ of condition, and take out the cooling back, underpressure distillation removes the 700g that anhydrates, and adds 2000g Virahol, standing over night in the mixture, the inorganic salt that filtering is precipitated out, solvent evaporated obtains finished product 455g.By two phase titrations, the content of aliphatic alcohol polyoxyethylene sulfonate is 89%.
Embodiment 4: the preparation of experimental water
Add 41.98g sodium-chlor, 4.06g calcium chloride, 3.96g magnesium chloride in the deionized water of 1000mL, the preparation total mineralization is that 50000mg/L, calcium ions and magnesium ions concentration are the experimental water of 2500mg/L.
Embodiment 5: the preparation of highly efficiency compositional oil-displacing agent
70g aliphatic alcohol polyoxyethylene sulfonate, 6.5g water are joined in the there-necked flask of 250mL and mixed 1 hour.Again 15g heavy alkylbenzene sulfonate, 6.5g water, 2g polyacrylamide are joined in the there-necked flask of 100mL and mixed 1 hour.Mixture in the 100mL there-necked flask is poured in the 250mL there-necked flask, continued to mix 1.5 hours, the composite oil-displacing agent that gets.
Embodiment 6: get among the embodiment 5 the highly efficiency compositional oil-displacing agent 0.7g of preparation, be dissolved in the experimental water of high salinity, high contents of calcium and magnesium ionic concn of preparation among the 100g embodiment 4, drip tensiometer with the rotation of SVT20 type and survey an oil water interfacial tension.At 85 ℃, total mineralization is that 50000mg/L, calcium ions and magnesium ions concentration are 2500mg/L, and oil water interfacial tension still can reach 3.7 * 10
-3MN/m.
Claims (7)
1. the synthetic method of an aliphatic alcohol polyoxyethylene sulfonate, it is characterized in that fatty alcohol polyoxyethylene ether sulfate, water, catalyzer, sulphonating agent are placed reactor by proportioning, the reaction some hrs, take out the cooling back, and concentrating under reduced pressure goes portion water, adds certain amount of organic solvent in the mixture and carry out desalination, leave standstill, the inorganic salt of filtering precipitating reclaim solvent, obtain the finished product aliphatic alcohol polyoxyethylene sulfonate;
Sulphonating agent is selected Na for use
2SO
3Or NaHSO
3
Catalyzer is selected transition metal ion for use: the muriate of zinc, manganese, copper, iron, titanium, zirconium or vanadium, catalyst levels are the 0.2%-0.4% of reactant total mass;
Fatty alcohol polyoxyethylene ether sulfate and sulphonating agent mole proportioning are: 1: 1.0-2.2, and 120 ℃-200 ℃ of temperature of reaction, the reaction times is 3h-6h;
Desalination is selected for use with organic solvent: methyl alcohol, ethanol, Virahol, methylene dichloride, trichloromethane or toluene.
2. the synthetic method of aliphatic alcohol polyoxyethylene sulfonate according to claim 1 is characterized in that fatty alcohol polyoxyethylene ether sulfate and sulphonating agent mole proportioning are: 1: 1.2-1.6.
3. the synthetic method of aliphatic alcohol polyoxyethylene sulfonate according to claim 1 is characterized in that temperature of reaction is chosen as 150 ℃-170 ℃.
4. the synthetic method of aliphatic alcohol polyoxyethylene sulfonate according to claim 1 is characterized in that the reaction times is 4h.
5. the synthetic method of aliphatic alcohol polyoxyethylene sulfonate according to claim 1 is characterized in that desalination selects the Virahol best results for use with organic solvent.
6. the application of the described method synthetic of claim 1 aliphatic alcohol polyoxyethylene sulfonate is characterized in that being used for the composite of tertiary oil recovery oil-displacing agent, and by weight percentage, this oil-displacing agent is composed of the following components:
Aliphatic alcohol polyoxyethylene sulfonate 60%-70%,
Heavy alkylbenzene sulfonate 10%-20%,
Water-soluble polyacrylamide 1%-2%,
Water 10%-25%;
Preparation method:
(1) at normal temperatures and pressures, 50% of aliphatic alcohol polyoxyethylene sulfonate, Total Water adds reactor, fully stirs 1-2 hour;
(2) remaining 50% water, water-soluble polyacrylamide, heavy alkylbenzene sulfonate are stirred, stirred 0.5-1 hour;
(3) material with (2) joins in the material of (1), stirs 1.5-2h and promptly gets composite oil-displacing agent;
Described aliphatic alcohol polyoxyethylene sulfonate is negatively charged ion-nonionic surface active agent, and the fatty carbon chain number of aliphatic alcohol polyoxyethylene sulfonate is 8-22, and average EO number is 1-12;
Described heavy alkylbenzene sulfonate is an anion surfactant, and this heavy alkylbenzene sulfonate alkyl carbon chain number is 8-24.
7. application according to claim 6 is characterized in that composite oil-displacing agent, and the fatty carbon chain number of described aliphatic alcohol polyoxyethylene sulfonate is 10-15, and average EO number is 3-7;
Described heavy alkylbenzene sulfonate alkyl carbon chain number is 14-18.
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| CN101255127B true CN101255127B (en) | 2010-07-28 |
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| CN101935521B (en) * | 2010-07-19 | 2013-01-02 | 江南大学 | Application of alcohol amide nonionic surfactant for alkali-free flooding |
| CN102372658A (en) * | 2010-08-23 | 2012-03-14 | 中国石油化工股份有限公司 | Fatty alcohol-polyoxyethylene ether benzene sulfonate and preparation method thereof |
| CN101979426A (en) * | 2010-10-09 | 2011-02-23 | 西南石油大学 | Method for synthesizing fatty alcohol (alkylphenol) polyoxyethylene ether sulfonate through olefin addition |
| CN102464974B (en) * | 2010-11-17 | 2013-08-07 | 中国石油化工股份有限公司 | Composition capable of greatly improving crude oil recovery ratio and preparation method thereof |
| CN102070778B (en) * | 2010-12-21 | 2012-07-04 | 江南大学 | Method for preparing high-concentration polyoxy alkyl allyl ether sulfonate |
| CN103031119B (en) * | 2011-09-29 | 2014-11-26 | 中国石油化工股份有限公司 | Sulfonate-containing anionic/nonionic surfactant composition and preparation method |
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| CN102974263A (en) * | 2012-12-24 | 2013-03-20 | 江南大学 | Preparation method of long-chain fatty alcohol-polyoxyethyleneether sulfate and amphoteric surfactant as well as application thereof in tertiary oil recovery |
| CN103304449A (en) * | 2013-06-14 | 2013-09-18 | 河北科技大学 | Method for preparing fatty alcohol polyoxyalkylene ether sulfonate |
| CN103288687A (en) * | 2013-06-19 | 2013-09-11 | 南京理工大学 | Preparation method of fatty alcohol polyethenoxy ether sulfonate |
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| CN105255472A (en) * | 2015-11-14 | 2016-01-20 | 山东宝莫生物化工股份有限公司 | Temperature-resisting anti-salt surfactant compounding system and compounding method thereof |
| CN106801597A (en) * | 2015-11-26 | 2017-06-06 | 中国石油化工股份有限公司 | Heavy crude reservoir combined type flooding method and displacement composition |
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| CN109897622A (en) * | 2019-03-26 | 2019-06-18 | 黑龙江信维源化工有限公司 | A kind of surface active agent for tertiary oil recovery composition and preparation method |
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