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Sulfonate anionic/nonionic surfactant and preparation method thereof

A surfactant and sulfonate technology, which is applied in the field of sulfonate anion non-surfactant and its preparation, can solve the problems of fouling damage, high use concentration, poor oil displacement efficiency, etc., and achieve the effect of avoiding clogging

Active Publication Date: 2013-04-10
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] One of the technical problems to be solved by the present invention is that the oil displacement agent containing surfactant in the prior art has poor oil displacement efficiency under high temperature and high salinity conditions, high use concentration and the impact of alkali on formation and oil well in ASP flooding. Corrosion and fouling damage problems, providing a new sulfonate anion non-surfactant

Method used

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  • Sulfonate anionic/nonionic surfactant and preparation method thereof
  • Sulfonate anionic/nonionic surfactant and preparation method thereof
  • Sulfonate anionic/nonionic surfactant and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] (a) Synthesis of nonylphenol polyoxyethylene ether (n=6)

[0035] Add 220 grams (1 mole) of nonylphenol and 4.4 grams of calcium oxide catalyst to a reactor equipped with a condensing device, a stirring device and a gas disperser. When heating to 135 ° C while passing nitrogen, add 20 grams of water and stir the reaction 1 hour. After dehydration, cool down to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to obtain a highly active, highly selective composite calcium oxide alkoxylation catalyst reaction solution system, and the system Heat the temperature to 80-90°C, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then purge with nitrogen for 3-4 times, adjust the reaction temperature of the system to 140°C and slowly introduce 264 grams (6 moles) of epoxy Ethane, control pressure ≤ 0.40MPa. After the reaction, the system was purged with nitrogen, cooled, neutralized, and dehydrated to obtain 48...

Embodiment 2

[0042] (a) Synthesis of nonylphenol polyoxyethylene ether (n=3)

[0043] Add 220 grams (1 mole) of nonylphenol and 2.6 grams of calcium oxide catalyst to a reactor equipped with a condensing device, a stirring device and a gas disperser. When heating to 135 ° C while passing nitrogen, add 11 grams of water and stir the reaction 1 hour. After dehydration, cool down to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to obtain a highly active, highly selective composite calcium oxide alkoxylation catalyst reaction solution system, and the system Heat the temperature to 80-90°C, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then purge 3-4 times with nitrogen, adjust the reaction temperature of the system to 150°C and slowly feed 132 grams (3 moles) of epoxy Ethane, control pressure ≤ 0.40MPa. After the reaction, the system was purged with nitrogen, cooled, neutralized, and dehydrated to obtain 347 g of no...

Embodiment 3

[0050] (a) Synthesis of octylphenol polyoxyethylene ether (n=5)

[0051] Add 206 grams (1 mole) of octylphenol and 3.1 grams of calcium oxide catalyst to a reactor equipped with a condensing device, a stirring device and a gas disperser, and when heating to 135 ° C while passing nitrogen, add 14 grams of water and stir the reaction 1 hour. After dehydration, cool down to 80°C, slowly add sulfuric acid (20wt%) to neutralize the theoretical amount of the catalyst dropwise to obtain a highly active, highly selective composite calcium oxide alkoxylation catalyst reaction solution system, and the system Heat the temperature to 80-90°C, turn on the vacuum system, dehydrate under high vacuum for 2 hours, then purge 3-4 times with nitrogen, adjust the reaction temperature of the system to 150°C and slowly pass in 220 grams (5 moles) of epoxy Ethane, control pressure ≤ 0.40MPa. After the reaction, the system was purged with nitrogen, cooled, neutralized, and dehydrated to obtain 422 ...

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Abstract

The invention relates to sulfonate anionic / nonionic surfactant and a preparation method thereof, mainly aiming at solving the problems that the oil displacing efficiency of oil displacing agent containing surfactant in the prior art is low and the working concentration is high under conditions of high temperature and high salt content, and alkali for three-component combined flooding causes corrosion and fouling damage to stratums and oil wells. Alkylphenol ethoxylate benzene sulfonate with a general molecular formula as shown by the accompanying drawing is adopted, wherein R1 is C1-C20 alkyl, M is any one kinds of metal ions selected from alkali metals or ammonio, n is the addition number of ethyoxyl (EO) and is any integer within 1-20, x and y are the number of sulfuric groups, and x+y is equal to 1 to 5. By adopting the technical scheme, the problems are better solved and the sulfonate anionic / nonionic surfactant can be used for tertiary oil recovery in oil fileds.

Description

technical field [0001] The invention relates to a sulfonate anion non-surfactant and a preparation method thereof. Background technique [0002] The oil extraction process is divided into primary oil recovery, secondary oil recovery and tertiary oil recovery. Primary and secondary oil recovery are both physical methods of oil recovery, usually 30-40% of crude oil can be recovered, and tertiary oil recovery can further increase the oil recovery rate through enhanced oil recovery measures. Chemical flooding is the main method of tertiary oil recovery, and surfactant flooding plays an important role in chemical flooding. Whether surfactant is used as a main agent or as an auxiliary agent, it plays an inestimable role in greatly improving oil recovery. effect. [0003] In today's increasingly tense energy environment, enhanced oil recovery has become a major topic in oil exploration research. After water flooding, about 2 / 3 of the oil stays in the finer or narrower capillary p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/12B01F17/42C09K8/584C09K23/12C09K23/42
Inventor 沈之芹李应成杨一青李斌
Owner CHINA PETROLEUM & CHEM CORP