CN112707865A - Zwitterionic surfactant and preparation method thereof - Google Patents
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Abstract
The invention relates to a zwitterionic surfactant and a preparation method thereof. Mainly solves the problems that the surfactant used as an oil displacement agent in the prior production technology has poor oil displacement effect and alkali in the ternary combination flooding corrodes and scales the stratum. The invention adopts a hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant, and the molecular general formula of the surfactant is as follows: in the formula (1), R1Is C8‑C22A hydrocarbon group of (a); m is the polymerization degree of polyethylene polyamine, x is the polymerization degree of polyoxypropylene, y is the polymerization degree of polyoxyethylene, m is any integer of 0-6, x is any number of 0-20, and y is any number of 1-20; m is selected from the group consisting of cations or cations that charge balance formula (1)A sub-group; the technical scheme that n is the reciprocal of the absolute value of the valence state of M better solves the problem and can be used in the enhanced oil recovery production of the oil field.
Description
Technical Field
The invention relates to a zwitterionic surfactant and a preparation method thereof.
Background
After decades of exploitation, many oil fields in China enter a high water-content stage, the yield is reduced, and the development of tertiary oil recovery is an important way for improving the oil recovery. Tertiary oil recovery is compared with primary oil recovery and secondary oil recovery. Generally speaking, in the initial stage of oil extraction, the natural energy of the stratum is only used for extracting oil, which is called primary oil extraction, and the recovery ratio is only about 10%. Methods for recovering oil by supplementing energy to the formation, such as water injection, gas injection, and the like, are known as secondary recovery. At present, a large number of oil fields in the world adopt a secondary oil recovery method, but the recovery rate can only reach about 25 to 40 percent generally. The tertiary oil recovery is a method for continuously exploiting residual underground oil by means of physics, chemistry, biology and the like so as to improve the recovery rate of crude oil. The research of applying the surfactant in oil extraction starts from the early thirties of the twentieth century, develops to the present, is an important means for improving the recovery ratio in an oil field, and has great progress in theory and practice. Currently, the following injection systems are essentially formed: active water flooding, foam flooding, low interfacial tension system flooding and the like.
The main mechanisms by which the use of surfactants can enhance oil recovery are: after the oil field enters a high water content period, residual oil is trapped in pores of oil reservoir rocks in a discontinuous oil film, two main forces acting on oil droplets are viscous force and capillary force, and if a proper surfactant system is selected, the interfacial tension between oil and water is reduced, so that the interfacial tension between oil and water in an oil reservoir is reduced to a lower or ultralow value (10 mN/m) from 20-30 mN/m-3～10-4mN/m), the resistance caused by the deformation of oil droplets when the residual oil moves can be reduced, and the oil displacement efficiency is greatly improved.
At present, the most used surfactants for tertiary oil recovery at home and abroad are petroleum sulfonate, heavy alkylbenzene sulfonate and other surfactants modified by oil refining byproducts (CN1203935A, CN1566258A and CN1426833A), and the surfactants have the characteristics of wide material sources and low price. However, the surfactant has a series of problems of unstable performance, poor salt tolerance, particularly poor divalent cation resistance and the like, and cannot be applied to high-temperature and high-salinity oil field blocks. Therefore, the development of novel surfactants is of great significance to the tertiary oil recovery industry in China. At present, surfactants are successfully applied in common oil reservoirs (first-class oil reservoirs and second-class oil reservoirs) (CN1458219A), but for high-temperature and high-salinity oil reservoirs, the surfactants with better effect on the first-class oil reservoirs and the second-class oil reservoirs cannot effectively reduce interfacial tension and are represented by variable chemical structures, serious chromatographic separation and the like, and the surfactants cannot sufficiently work. The invention relates to a novel alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant which is high in interfacial activity, can well solve the problems and has a good application prospect.
Disclosure of Invention
The invention aims to solve the technical problem that an oil displacement agent containing a surfactant in the prior art is poor in oil displacement efficiency, and provides a novel alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant. The alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant has high interfacial activity and can reach 10 under the conditions of no alkali and high mineralization degree-3The ultra-low interfacial tension of mN/m, thereby improving the crude oil recovery efficiency. The second technical problem to be solved by the invention is to provide a preparation method of the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant corresponding to the first technical problem to be solved. The method has the characteristics of simple process, mild reaction conditions, low equipment requirement and the like. The invention aims to solve the third technical problem, namely the application of the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant corresponding to one of the technical problems in the improvement of the crude oil recovery rate of an oil field.
In order to solve one of the problems, the technical scheme adopted by the invention is as follows: a hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant has a molecular general formula as follows:
in the formula (1), R1Is C8-C22A hydrocarbon group of (a); m is the polymerization degree of polyethylene polyamine, x is the polymerization degree of polyoxypropylene, y is the polymerization degree of polyoxyethylene, m is any integer of 0-6, x is any number of 0-20, and y is any number of 1-20; m is selected from a cation or cationic group that balances the charge of formula (1); n is the reciprocal of the absolute value of the valence state of M; x is a halogen ion.
In the above technical scheme, R1Preferably C12～C16Alkyl of (C)12～C16Alkenyl of, C12～C16At least one of aryl groups of (a).
In the technical scheme, the value range of m is preferably 0-2.
In the above technical solution, M is preferably selected from any one of ammonium ions, alkali metal ions, and alkaline earth metal ions, and when M is an ammonium ion or an alkali metal ion, n is 1; when M is an alkaline earth metal, n is 0.5; further preferably, the alkali metal ion is preferably selected from any one of sodium ion and potassium ion, and the alkaline earth metal ion is preferably selected from any one of calcium ion and magnesium ion.
In the above technical solution, the X is preferably Cl.
In order to solve the second technical problem, the invention adopts the following technical scheme: a method for preparing the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant according to any one of the technical schemes for solving the technical problems, which comprises the following steps:
a) the hydrocarbyl group is R1The alkyl amino acid methyl ester and the polyethylene polyamine are reacted at the reaction temperature of 85-160 ℃ and under the action of a basic catalyst according to the molar ratio of 1:1.05, the generated methanol is evaporated, and the reaction is carried out for 1-10 hours to obtain the productTo hydrocarbyl imidazolines;
b) under the action of an alkaline catalyst, reacting the alkyl imidazoline with required amount of propylene oxide and ethylene oxide to obtain alkyl imidazoline polyoxypropylene polyoxyethylene ether;
c) dissolving the alkyl imidazoline polyoxypropylene polyoxyethylene ether obtained in the step a) into a solvent, adding alkali according to the molar ratio of 1 (2-4), carrying out an alkalization reaction, then adding a carboxylation reagent according to the molar ratio of 1 (2-4), and carrying out a carboxylation reaction to obtain the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant.
In the above technical solution, the basic catalyst in step a) and/or step c) is at least one of alkali metal hydroxide or alkaline earth metal hydroxide.
In the technical scheme, the reaction temperature of the methyl hydrocarbyl acid ester and the polyethylene polyamine in the step a) is 120-150 ℃, and the reaction time is 6-8 hours.
In the technical scheme, the solvent in the step c) is selected from benzene, the alkali is selected from sodium hydroxide, the alkalization temperature is 30-80 ℃, the preferable alkalization temperature is 40-60 ℃, and the reaction time is 0.5-3 hours, and the preferable reaction time is 1-2 hours; the carboxylation reaction temperature is 50-100 ℃, preferably 60-80 ℃, and the reaction time is 6-18 hours, preferably 6-10 hours.
The alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant obtained by the invention has good surface and interface activity and good salt resistance, can form low interfacial tension on an oil-water interface, is used for chemical flooding enhanced oil recovery, and has wide application prospect and practical significance.
In order to solve the third technical problem, the invention adopts the following technical scheme: an application of the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant in any technical scheme for solving the technical problems in improving the crude oil recovery rate of the oil field.
In the above technical solution, the application is not particularly limited, and for example, a specific method may be to inject an oil displacement agent comprising 1 part by weight of the hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant and 10-2000 parts by weight of water into an oil-bearing formation. The water used in the method can be any one or more of deionized water with a total mineralization degree range of 0-300000mg/L, oilfield injection water, formation water, seawater, rainwater, river water and the like, preferably the water with the total mineralization degree range of 1000-50000 mg/L, and more preferably the oilfield injection water in view of construction convenience, water resource saving and the like, for example, the injection water used in the victory oilfield in the embodiment of the invention, and the composition is shown in Table 1. In order to increase the oil displacement effect, the oil displacement agent of the invention can also comprise additives commonly used in the field, such as small molecular alcohols, DMSO, diethanolamine, CTAC and the like.
By adopting the technical scheme of the invention, under the conditions that the total mineralization is 0-300000mg/L and the temperature is 70-90 ℃, the interfacial tension of the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant and the Shengli oil field crude oil can reach 10-4mN/m, on the basis of water drive, can further improve the recovery ratio by more than 11.9 percent, and obtain better technical effect.
The invention is further illustrated by the following examples.
Drawings
FIG. 1 is an IR spectrum of the zwitterionic surfactant of cetyl imidazolinium polyoxyethylene (5) ether carboxylate of example 2.
Detailed Description
[ example 1 ]
1. Synthesis of lauryl imidazoline polyoxyethylene (2) ether carboxylate
a) Methyl laurate and diethylenetriamine are reacted at the reaction temperature of 145 ℃ and under the action of a potassium hydroxide catalyst according to the molar ratio of 1:1.05, generated methanol is distilled off at the same time, and the reaction is carried out for 8 hours, so as to obtain the lauryl imidazoline.
b) Adding the lauryl imidazoline synthesized in the step a) into a reactor provided with a condensing device, a stirring device and a gas disperser, adding 1% of sodium hydroxide by weight, heating to 85 ℃ while introducing nitrogen, and stirring for reacting for 1 hour. Starting a vacuum system, vacuumizing and dehydrating for 1 hour at the temperature of 90 ℃, purging for 4 times by using nitrogen, adjusting the reaction temperature of the system to 150 ℃, slowly introducing ethylene oxide according to the molar ratio of 1:2, and controlling the pressure to be less than or equal to 0.40MPa for reaction; after the reaction is finished, the system is purged by nitrogen, and the lauryl imidazoline polyoxyethylene (2) ether is obtained after neutralization and dehydration after cooling.
c) Dissolving the product obtained in the step b) into a benzene solvent, adding sodium hydroxide according to a molar ratio of 1:3, alkalizing for 1 hour at 60 ℃, adding a carboxylation reagent sodium chloroacetate according to a molar ratio of 1:2.5, and reacting for 8 hours to obtain the lauryl imidazoline polyoxyethylene (2) ether carboxylate zwitterionic surfactant.
2. Evaluation of surfactant Properties
Preparing an oil displacement agent:
the oil displacement agent obtained by mixing 1 part by weight of the surfactant and 600 parts by weight of victory oil field winning injection water is used for interfacial tension evaluation and oil displacement experiments. Wherein the compositions of the winning oil field winning injection water used in all the examples and comparative examples of the present invention are shown in Table 1. The compositions of the oil displacing agents are listed in table 2 for comparison.
And (3) evaluating interfacial tension:
the results of measuring the interfacial tension between the oil displacement agent and the dehydrated crude oil in the Shengli oil field at 80 ℃ and at 4500 rpm by using a TX-500C rotary drop interfacial tensiometer produced by the university of Texas, USA are shown in Table 3.
[ example 2 ]
1. Synthesis of hexadecylimidazoline polyoxyethylene (5) ether carboxylate
a) Methyl oleate and diethylenetriamine are reacted at the reaction temperature of 145 ℃ and under the action of a potassium hydroxide catalyst according to the molar ratio of 1:1.05, generated methanol is distilled out at the same time, and the reaction is carried out for 8 hours, so that the oil-based imidazoline is obtained.
b) Adding the hexadecyl imidazoline synthesized in the step a) into a reactor provided with a condensing device, a stirring device and a gas disperser, adding 1% of sodium hydroxide by weight, heating to 85 ℃ while introducing nitrogen, and stirring for reacting for 1 hour. Starting a vacuum system, vacuumizing and dehydrating for 1 hour at the temperature of 90 ℃, purging for 4 times by using nitrogen, adjusting the reaction temperature of the system to 150 ℃, slowly introducing ethylene oxide according to the molar ratio of 1:5, and controlling the pressure to be less than or equal to 0.40MPa for reaction; after the reaction is finished, the system is purged by nitrogen, and neutralization and dehydration are carried out after cooling to obtain hexadecylimidazoline polyoxyethylene (5) ether.
c) Dissolving the product obtained in the step b) into a benzene solvent, adding sodium hydroxide according to a molar ratio of 1:3, alkalizing for 1 hour at 60 ℃, adding a carboxylation reagent sodium chloroacetate according to a molar ratio of 1:2.5, and reacting for 8 hours to obtain the hexadecylimidazoline polyoxyethylene (5) ether carboxylate zwitterionic surfactant.
2. Structural characterization
The infrared spectrum of hexadecylimidazoline polyoxyethylene ether carboxylate is shown in figure 1, which shows that 3454.9cm-1A stretching vibration absorption peak at-OH; 2922.4 and 2856.3cm-1The stretching vibration absorption peaks of C-H on-CH 3 and-CH 2-; 1734.5cm-1A stretching vibration absorption peak of-C ═ O; 1649.0cm-1The position is-C-N-stretching vibration absorption peak; 1458.8cm-1A bending vibration absorption peak at saturation-C-H; 1097.1cm-1The peak is the stretching vibration absorption peak of-C-O.
3. Evaluation of surfactant Properties
The performance evaluation method was the same as in example 1 except that the oil-displacing agent composition was different. The compositions of the oil-displacing agents are shown in Table 2 for comparison, and the evaluation results are shown in Table 3.
[ example 3 ]
1. Synthesis of octyl imidazoline carboxylates
a) And (2) according to the molar ratio of 1:1.05, under the reaction temperature of 145 ℃ and the action of a potassium hydroxide catalyst, evaporating generated methanol while reacting, and reacting for 8 hours to obtain octyl imidazoline.
b) Adding the octyl imidazoline synthesized in the step a) into a reactor provided with a condensing device, a stirring device and a gas disperser, adding 1% of sodium hydroxide, heating to 85 ℃ while introducing nitrogen, and stirring for reacting for 1 hour. Starting a vacuum system, vacuumizing and dehydrating for 1 hour at the temperature of 90 ℃, purging for 4 times by using nitrogen, adjusting the reaction temperature of the system to 150 ℃, slowly introducing propylene oxide according to the molar ratio of 1:10, slowly introducing ethylene oxide according to the molar ratio of 1:20, and controlling the pressure to be less than or equal to 0.40MPa for reaction; after the reaction, the system was purged with nitrogen, cooled, neutralized and dehydrated to obtain octyl imidazoline polyoxypropylene (10) polyoxyethylene (20) ether.
c) Dissolving the product obtained in the step b) into a benzene solvent, adding sodium hydroxide according to a molar ratio of 1:3, alkalizing for 1 hour at 60 ℃, adding a carboxylation reagent sodium chloroacetate according to a molar ratio of 1:2.5, and reacting for 8 hours to obtain the octyl imidazoline polyoxypropylene (10) polyoxyethylene (20) ether carboxylate zwitterionic surfactant.
2. Evaluation of surfactant Properties
The performance evaluation method was the same as in example 1 except that the oil-displacing agent composition was different. The compositions of the oil-displacing agents are shown in Table 2 for comparison, and the evaluation results are shown in Table 3.
[ example 4 ]
1. Synthesis of behenyl imidazoline carboxylate
a) According to the molar ratio of 1:1.05, under the action of a potassium hydroxide catalyst and at the reaction temperature of 145 ℃, the methyl behenate and the diethylenetriamine react while evaporating generated methanol, and the reaction lasts for 8 hours to obtain the behenyl imidazoline.
b) Adding the docosyl imidazoline synthesized in the step a) into a reactor provided with a condensing device, a stirring device and a gas disperser, adding 1% of sodium hydroxide, heating to 85 ℃ while introducing nitrogen, and stirring for reacting for 1 hour. Starting a vacuum system, vacuumizing and dehydrating for 1 hour at the temperature of 90 ℃, purging for 4 times by using nitrogen, adjusting the reaction temperature of the system to 150 ℃, slowly introducing propylene oxide according to the molar ratio of 1:3, slowly introducing ethylene oxide according to the molar ratio of 1:7, and controlling the pressure to be less than or equal to 0.40MPa for reaction; after the reaction is finished, the system is purged by nitrogen, and neutralization and dehydration are carried out after cooling to obtain the docosyl imidazoline polyoxypropylene (3) polyoxyethylene (7) ether.
c) Dissolving the product obtained in the step b) into a benzene solvent, adding sodium hydroxide according to a molar ratio of 1:3, alkalizing for 1 hour at 60 ℃, adding a carboxylation reagent sodium chloroacetate according to a molar ratio of 1:2.5, and reacting for 8 hours to obtain the behenyl imidazoline polyoxypropylene (3) polyoxyethylene (7) ether carboxylate zwitterionic surfactant.
2. Evaluation of surfactant Properties
The performance evaluation method was the same as in example 1 except that the oil-displacing agent composition was different. The compositions of the oil-displacing agents are shown in Table 2 for comparison, and the evaluation results are shown in Table 3.
[ example 5 ]
1. Surfactant preparation
The surfactant synthesized in example 2 was used, except that the concentration was formulated.
2. Evaluation of oil-displacing agent Performance
The performance evaluation method was the same as in example 1 except that the oil-displacing agent composition was different. The compositions of the oil-displacing agents are shown in Table 2 for comparison, and the evaluation results are shown in Table 3.
[ example 6 ]
According to the test of the physical simulation oil displacement effect of the complex oil displacement system in the SY/T6424-2000 complex oil displacement system performance test method, the length is 30cm, the diameter is 2.5cm, and the permeability is 1.5m at the temperature of 80 DEG C2And performing a simulated oil displacement experiment on the core. Firstly, carrying out water flooding to 98% water content by using the prevailing oil field exploitation injection water, after the water flooding is finished, transferring the oil displacement agent with the volume of 0.3pv (core pore volume), then carrying out water flooding to 98% water content, and calculating to improve the crude oil recovery ratio.
The oil displacement agents prepared in example 2 and example 5 were evaluated in the oil displacement experiment according to the above methods, and the results were respectively 9.5% and 11.9% for enhanced oil recovery
[ COMPARATIVE EXAMPLE 1 ]
The evaluation method was the same as in example 2 except that sodium petroleum sulfonate (Daqing refinery) was used instead of the zwitterionic surfactant of cetyl imidazoline polyoxyethylene (4) ether carboxylate in example 2, and the rest was the same, and it was determined that an interfacial tension of 0.024mN/m was formed between the composition and the Shengli oil field crude oil.
The oil displacement of the prepared composition is carried out by the method as in example 6, and the oil recovery rate is measured to be improved by 3.8%.
TABLE 1 victory oilfield injection water
Table 2 examples 1-5 oil-displacing agent compositions
Table 3 examples 1-5 oil displacing agent interfacial tension properties
| Examples | Interfacial tension (mN/m) |
| 1 | 0.0033 |
| 2 | 0.00028 |
| 3 | 0.0085 |
| 4 | 0.0066 |
| 5 | 0.00013 |
Claims (10)
1. A hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant has a molecular general formula as follows:
r in the formula (1)1Is C8-C22A hydrocarbon group of (a); m is the polymerization degree of polyethylene polyamine, x is the polymerization degree of polyoxypropylene, y is the polymerization degree of polyoxyethylene, m is any integer of 0-6, x is any number of 0-20, and y is any number of 1-20; m is selected from a cation or cationic group that balances the charge of formula (1); n is the reciprocal of the absolute value of the valence state of M; x is a halogen ion.
2. The hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as described in claim 1, wherein M is selected from any one of ammonium ions, alkali metal ions, and alkaline earth metal ions, and when M is an ammonium ion or an alkali metal ion, n is 1; when M is an alkaline earth metal, n is 0.5; further preferably, the alkali metal ion is preferably selected from any one of sodium ion and potassium ion, and the alkaline earth metal ion is preferably selected from any one of calcium ion and magnesium ion.
3. The hydrocarbyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as described in claim 1, wherein R is1Is C12～C16Alkyl of (C)12～C16Alkenyl radical, C12～C16At least one of aryl groups of (a).
4. The alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as described in claim 1, wherein m ranges from 0 to 2.
5. A method for preparing the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as claimed in any one of claims 1-4, comprising the following steps:
a) the hydrocarbyl group is R1The alkyl amino acid methyl ester and the polyethylene polyamine are reacted at the reaction temperature of 85-160 ℃ and under the action of a basic catalyst according to the molar ratio of 1 (1-1.5), the generated methanol is evaporated out, and the reaction is carried out for 1-10 hours to obtain alkyl imidazoline;
b) under the action of an alkaline catalyst, reacting the alkyl imidazoline with required amount of propylene oxide and ethylene oxide to obtain alkyl imidazoline polyoxypropylene polyoxyethylene ether;
c) dissolving the alkyl imidazoline polyoxypropylene polyoxyethylene ether obtained in the step a) into a solvent, adding alkali according to the molar ratio of 1 (2-4), carrying out an alkalization reaction, then adding a carboxylation reagent according to the molar ratio of 1 (2-4), and carrying out a carboxylation reaction to obtain the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant.
6. The method for preparing the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as claimed in claim 5, wherein the basic catalyst in step a) and/or step c) is at least one of alkali metal hydroxide or alkaline earth metal hydroxide.
7. The method for preparing the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as claimed in claim 5, wherein the reaction temperature of the alkyl imidazoline polyoxyethylene ether carboxylate prepared in step a) and the polyethylene polyamine is 120-150 ℃, and the reaction time is 6-8 hours.
8. The method for preparing the alkyl imidazoline polyoxypropylene polyoxyethylene ether carboxylate zwitterionic surfactant as claimed in claim 5, wherein the solvent in step c) is selected from benzene, the alkali is selected from sodium hydroxide, the alkalization temperature is 30-80 ℃, preferably 40-60 ℃, and the reaction time is 0.5-3 hours, preferably 1-2 hours; the carboxylation reaction temperature is 50-100 ℃, preferably 60-80 ℃, and the reaction time is 6-18 hours, preferably 6-10 hours.
9. Use of the alkyl imidazoline polyether sulfonate zwitterionic surfactant of any one of claims 1-4 in enhanced oil recovery.
10. The method of claim 9, which comprises injecting an oil-displacing agent comprising 1 part by weight of the surfactant and 10 to 2000 parts by weight of water into the oil-bearing formation.
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| CN114890909A (en) * | 2022-03-28 | 2022-08-12 | 黑龙江省瑞庆化工有限公司 | Surfactant for oil displacement, synthetic method and application in oil displacement system |
| CN116004212A (en) * | 2021-10-22 | 2023-04-25 | 中国石油化工股份有限公司 | CO (carbon monoxide) 2 Crude oil amphiphilic chemical agent and its preparation method and CO improvement 2 Method for driving recovery ratio |
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| CN101955768A (en) * | 2010-09-21 | 2011-01-26 | 大庆高新区华龙祥化工有限公司 | Surfactant used for displacement of reservoir oil, preparation method and application thereof in tertiary oil recovery |
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| CN101955768A (en) * | 2010-09-21 | 2011-01-26 | 大庆高新区华龙祥化工有限公司 | Surfactant used for displacement of reservoir oil, preparation method and application thereof in tertiary oil recovery |
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| ACS: "RN 68092-44-4", 《STN REGISTRY》 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116004212A (en) * | 2021-10-22 | 2023-04-25 | 中国石油化工股份有限公司 | CO (carbon monoxide) 2 Crude oil amphiphilic chemical agent and its preparation method and CO improvement 2 Method for driving recovery ratio |
| CN116004212B (en) * | 2021-10-22 | 2024-03-26 | 中国石油化工股份有限公司 | CO (carbon monoxide) 2 Crude oil amphiphilic chemical agent and its preparation method and CO improvement 2 Method for driving recovery ratio |
| CN114890909A (en) * | 2022-03-28 | 2022-08-12 | 黑龙江省瑞庆化工有限公司 | Surfactant for oil displacement, synthetic method and application in oil displacement system |
| CN114890909B (en) * | 2022-03-28 | 2024-01-12 | 黑龙江省瑞庆化工有限公司 | Surfactant for oil displacement, synthesis method and application thereof in oil displacement system |
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