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Hydroxysulfobetaine amphoteric surfactant for flooding and preparation method of hydroxysulfobetaine amphoteric surfactant

A technology of sulfobetaine and surfactants, which is applied in the field of hydroxysulfobetaine amphoteric surfactants for oil displacement and its preparation, can solve the problems of poor resistance to salt and other problems, and achieve non-toxic, harmless and non-toxic products. Good thermal stability, good high temperature and salt resistance

Inactive Publication Date: 2014-08-13
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An object of the present invention is to provide a kind of hydroxysulfobetaine amphoteric surfactant for oil displacement, which is used to solve the problem that the surface activity such as petroleum carboxylate is not good in resistance to salt; another aspect of the present invention One purpose is the preparation method of this oil displacement hydroxysultaine amphoteric surfactant

Method used

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  • Hydroxysulfobetaine amphoteric surfactant for flooding and preparation method of hydroxysulfobetaine amphoteric surfactant
  • Hydroxysulfobetaine amphoteric surfactant for flooding and preparation method of hydroxysulfobetaine amphoteric surfactant
  • Hydroxysulfobetaine amphoteric surfactant for flooding and preparation method of hydroxysulfobetaine amphoteric surfactant

Examples

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Effect test

Embodiment 1

[0042] One, 296g methyl oleate, 117g benzene, and 1g methanesulfonic acid are used as catalysts, put into the reaction kettle, and feed N 2 After 30 minutes, react at 80°C for 10 hours, distill off unreacted aromatic hydrocarbons under reduced pressure, and recrystallize three times with absolute ethanol to obtain methyl aryl oleate with a yield of 91.3%.

[0043] 2. Put 250g methyl aryl oleate and 2.5g catalyst palladium carbon into the reactor, first use N 2 Replacement, then use H 2 After replacement, stir and heat up, the pressure is 0.1MPa, and the stirring speed is 500r / min. After the temperature reaches 230°C, raise the system pressure to 1.1MPa, start timing, take samples at regular intervals to measure the iodine value, until the iodine value no longer drops, cool down and depressurize the material, and the yield is 97.3%.

[0044]3. Weigh aryl oleyl alcohol and epichlorohydrin, 134g of 30% sodium hydroxide solution, and 1g of tetrabutylammonium bromide in a molar ...

Embodiment 2

[0048] One, with 296g methyl oleate, 158g mixed xylenes, 1g methanesulfonic acid as catalyst, put into reactor, pass into N 2 After 30 minutes, react at 80°C for 10 hours, distill off unreacted aromatic hydrocarbons under reduced pressure, and recrystallize three times with absolute ethanol to obtain methyl aryl oleate with a yield of 92.5%.

[0049] 2. Put 250g methyl aryl oleate and 2.5g catalyst into the reactor, first use N 2 Replacement, then use H 2 After replacement, stir and heat up, the pressure is 0.1MPa, and the stirring speed is 500r / min. After the temperature reaches 230°C, raise the system pressure to 1.1MPa, start timing, take samples at regular intervals to measure the iodine value, until the iodine value no longer drops, cool down and depressurize, and discharge, with a yield of 98.1%.

[0050] 3. Weigh aryl oleyl alcohol and epichlorohydrin, 134g of 30% sodium hydroxide solution, and 1g of tetrabutylammonium bromide in a molar ratio of 1:1, and place them ...

Embodiment 3

[0054] One, 296g methyl oleate, 138g toluene, 1g methanesulfonic acid are catalysts, put into reactor, pass into N 2 After 30 minutes, react at 80°C for 10 hours, distill off unreacted aromatic hydrocarbons under reduced pressure, and recrystallize three times with absolute ethanol to obtain methyl aryl oleate.

[0055] 2. Put 500g methyl aryl oleate and 2.5g catalyst into the reaction kettle, first use N 2 Replacement, then use H 2 After replacement, stir and heat up, the pressure is 0.1MPa, and the stirring speed is 500r / min. After the temperature reaches 230°C, raise the system pressure to 1.1MPa, start timing, take samples at regular intervals to measure the iodine value, until the iodine value no longer drops, then cool down and decompress and discharge.

[0056] 3. Weigh aryl oleyl alcohol and epichlorohydrin, 134g of 30% sodium hydroxide solution, and 1g of tetrabutylammonium bromide in a molar ratio of 1:1, and place them in a four-necked bottle equipped with an ele...

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Abstract

The invention relates to a hydroxysulfobetaine amphoteric surfactant for flooding and a preparation method of the hydroxysulfobetaine amphoteric surfactant, wherein the hydroxysulfobetaine amphoteric surfactant for flooding has a structural formula shown in the specification, in which R is selected from one of C6H5 phenyl, C7H7 tolyl, C8H9 o-xylyl, m-xylyl, p-xylyl, ethylphenyl, mixed xylyl, and C9H11 isopropylphenyl. The hydroxysulfobetaine amphoteric surfactant for flooding provided by the invention has good thermal stability and preferable resistance to high temperature and salt, can generate super low interfacial tension at a high temperature, can be suitable to be used at a large formation temperature range, specially for high-temperature high-salt oil fields, and has a good application prospect.

Description

1. Technical field: [0001] The invention relates to a surfactant used in oilfield tertiary oil recovery, in particular to a hydroxysultaine amphoteric surfactant for oil displacement and a preparation method thereof. 2. Background technology: [0002] The internal salt structure of betaine-type surfactant makes it have good temperature resistance and salt resistance. In addition, it has good interfacial properties in a wide pH range. Prerequisites for application in the system. At present, there are few literatures about the application of betaine in oil fields. Interfacial Tension Reduction Performance Surfactants enhance oil recovery by reducing interfacial tension between oil and water, reducing the start-up resistance of residual oil, and improving microscopic oil displacement efficiency. Therefore, the research on the interfacial properties of surfactants has always been the focus of screening surfactants for chemical composite flooding. [0003] At present, surfacta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/14
Inventor 吴文祥栾和鑫丁伟李杰王克亮于涛
Owner NORTHEAST GASOLINEEUM UNIV
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