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Polyoxyethylene ether-containing hydroxypropylanilino carboxylate betaine and preparation method thereof

A technology of polyoxyethylene ether hydroxypropyl anilino carboxylate and alcohol polyoxyethylene ether hydroxypropyl tertiary amine, applied in the field of polyoxyethylene ether hydroxypropyl anilino carboxylate betaine and its preparation, It can solve the problems of poor oil displacement effect, corrosion equipment, and high concentration, and achieve good surface activity and interface activity, strong temperature and salt resistance, and improve oil displacement efficiency.

Active Publication Date: 2016-07-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 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 effect under the conditions of high temperature and high salinity reservoir, the use concentration is high, and the alkali in ASP flooding To solve the problem of pollution damage caused by formations and oil wells, and serious corrosion of equipment and pipelines, a new type of betaine surfactant containing polyoxyethylene ether hydroxypropyl anilino carboxylate is provided

Method used

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  • Polyoxyethylene ether-containing hydroxypropylanilino carboxylate betaine and preparation method thereof
  • Polyoxyethylene ether-containing hydroxypropylanilino carboxylate betaine and preparation method thereof
  • Polyoxyethylene ether-containing hydroxypropylanilino carboxylate betaine and preparation method thereof

Examples

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Effect test

Embodiment 1

[0028] N-(3-hexadecyl alcohol polyoxyethylene ether (1)-2-hydroxyl)-N',N'dimethyl-p-phenylenediamine carboxylate betaine (R 1 =C 16 , R 2 =C 1 , n=1) synthesis

[0029] (a) Add 0.5 moles of cetyl alcohol and 1.4 grams of potassium hydroxide to a reaction kettle equipped with a condensing device, a stirring device and a gas disperser, heat the temperature of the reaction system to 85°C, and dehydrate under high vacuum (-0.09MPa) 1 hour, then purged the reactor with nitrogen for 4 times, then adjusted the temperature of the system to 150°C and slowly introduced 22 grams of ethylene oxide, and controlled the pressure <0.60MPa to carry out the alkoxylation reaction; after the reaction, blow with nitrogen Sweep the system, and obtain cetyl alcohol polyoxyethylene (1) ether through cooling, neutralization, decolorization, filtration and dehydration.

[0030] (b) Get cetyl alcohol polyoxyethylene (1) ether 0.45 mole and 0.68 mole epichlorohydrin and the sodium hydroxide solid par...

Embodiment 2

[0035] N-(3-eicosyl alcohol polyoxyethylene ether (5)-2-hydroxyl)-N',N'dimethyl-p-phenylenediamine carboxylate betaine (R 1 =C 20 , R 2 =C 2 , n=5) synthesis

[0036] (a) Add 0.5 moles of eicosanol and 1.5 grams of potassium hydroxide to a reaction kettle equipped with a condensing device, a stirring device and a gas disperser, heat the temperature of the reaction system to 85°C, and dehydrate under high vacuum (-0.09MPa) 1 hour, then purged the reactor with nitrogen for 4 times, then adjusted the temperature of the system to 150°C and slowly introduced 110 grams of ethylene oxide, and controlled the pressure <0.60MPa to carry out the alkoxylation reaction; after the reaction was completed, blow with nitrogen Sweep the system, cool, neutralize, decolorize, filter, and dehydrate to obtain eicosanol polyoxyethylene (5) ether.

[0037] (b) Get 0.49 moles of eicosanol polyoxyethylene (5) ether synthesized in step (a) and 0.75 moles of epichlorohydrin and 24 grams of sodium hyd...

Embodiment 3

[0042] N-(3-behenyl alcohol polyoxyethylene ether (2)-2-hydroxyl)-N',N'dimethyl-p-phenylenediamine carboxylate betaine (R 1 =C 22 , R 2 =C 1 , n=2) synthesis

[0043] (a) Add 0.5 moles of behenyl alcohol and 2.1 grams of potassium hydroxide to a reaction kettle equipped with a condensing device, a stirring device and a gas disperser, heat the temperature of the reaction system to 85°C, and place under high vacuum (-0.09MPa) Dehydration for 1 hour, then purging the reactor with nitrogen for 4 times, then adjusting the temperature of the system to 150°C and slowly feeding 44 grams of ethylene oxide, and controlling the pressure <0.60MPa to carry out the alkoxylation reaction; after the reaction, use nitrogen to The system is purged, cooled, neutralized, decolorized, filtered and dehydrated to obtain behenyl alcohol polyoxyethylene (2) ether.

[0044] (b) Get 0.48 moles of behenyl alcohol polyoxyethylene (2) ether synthesized in step (a), react with 0.75 moles of epichlorohyd...

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Abstract

The invention relates to polyoxyethylene-ether-containing hydroxypropyl anilino carboxylate betaine and a preparation method thereof, and mainly solves the problems in the prior art that an oil-displacement agent containing a surfactant is bad in oil displacement effect and high in use concentration under the oil reservoir conditions of high temperature and high salinity, and alkalis in alkali-surfactant-polymer flooding pollute and damage stratum and oil wells and severely corrode equipment and conveying pipelines. The polyoxyethylene-ether-containing hydroxypropyl anilino carboxylate betaine has the molecular general formula (I) shown in the specification, and in the formula (I), R1 is any one of C15-C39 alkyl and alkenyl, n is 1-10, R2 is any one of C1-C4 alkylidene and hydroxyl-substituted alkylidene. The technical scheme relatively well solves the problems and is applicable to tertiary oil recovery of oil fields.

Description

technical field [0001] The invention relates to polyoxyethylene ether-containing hydroxypropylanilino carboxylate betaine and a preparation method thereof. Background technique [0002] Chemical flooding technology is one of the main technical measures to enhance oil recovery in my country, and surfactants play an important role in the process of chemical flooding. Whether it is the currently used surfactant flooding (micelle flooding, microemulsion flooding), or the most promising binary compound (surfactant + polymer), ASP flooding (alkali + surfactant + polymer), all of which are inseparable from the purpose of enhancing oil recovery by increasing the interfacial activity of surfactants and reducing the interfacial tension of oil and water. [0003] As early as in patent applications in the late 1920s and early 1930s, DeGroot suggested that water-soluble surfactants could help enhance oil recovery. At present, in tertiary oil recovery, the commonly used surfactants are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C229/40C07C227/08C09K8/584
Inventor 唐恒志沙鸥张卫东李应成
Owner CHINA PETROLEUM & CHEM CORP