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Double hydrophilic head-based anionic surfactant and preparation method thereof

A technology of surfactant and double hydrophilic head group is applied in the field of double hydrophilic head group anionic surfactant and its preparation, which can solve the problems of poor anti-divalent cation effect, poor temperature resistance and salt resistance, etc.

Active Publication Date: 2016-03-02
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the technical problems to be solved by the present invention is that the surface active agent used as the main component of the oil displacement agent system in the prior art has the problem of poor temperature resistance and salt resistance, especially the poor effect of anti-divalent cations. A new amphiphilic Hydrohead based anionic surfactant

Method used

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  • Double hydrophilic head-based anionic surfactant and preparation method thereof
  • Double hydrophilic head-based anionic surfactant and preparation method thereof
  • Double hydrophilic head-based anionic surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057]

[0058] Among them, m 1 +m 2 = 3, n 1 +n 2 =10,m 3 +m 4 =3.

[0059] Add 325 grams (1 mole) of behenylamine, 2.3 grams of potassium hydroxide and 8.4 grams of anhydrous potassium carbonate in a 2L pressure reactor equipped with a stirring device, and when heated to 80-90°C, open the vacuum system, Dehydrate under vacuum for 1 hour, then replace with nitrogen for 3 to 4 times, adjust the reaction temperature of the system to 120°C and slowly introduce 134.2 grams (3.05 moles) of ethylene oxide, control the pressure ≤ 0.60MPa, wait for the reaction of ethylene oxide After the end, adjust the temperature to 130°C and slowly feed 585.8 grams (10.1 moles) of propylene oxide, control the pressure ≤ 0.60MPa, and then adjust the temperature to 140°C and slowly feed 134.2 grams ( 3.05 moles) of ethylene oxide. After the reaction was completed, the temperature was lowered to 90°C, the low boilers were removed in vacuum, neutralized and dehydrated after cooling to obtai...

Embodiment 2

[0062] With [Example 1], the difference is that behenylamine polyoxyethylene (3) polyoxypropylene (10) polyoxyethylene (3) ether and 3-chloro-2-hydroxypropanesulfonate sodium and sodium hydroxide After the reaction, there is no need to add acidification treatment, that is, heat to 85 ° C for 9 hours, change to a distillation device, distill off the solvent, add water and stir the residue evenly, and obtain sodium chloride, excess sodium hydroxide, and excess 3-chloro-2 - Behenylamine polyoxyethylene (3) polyoxypropylene (10) polyoxyethylene (3) ether sodium dihydroxypropanesulfonate surfactant S-2 of sodium hydroxypropanesulfonate.

Embodiment 3

[0064]

[0065] Among them, m 1 +m 2 = 3, n 1 +n 2 =10,m 3 +m 4 =3.

[0066] Obtain behenylamine polyoxyethylene (3) polyoxypropylene (10) polyoxyethylene (3) ether dihydroxypropanesulfonic acid with [Example 1], the difference is that 90% diethanolamine replaces 25% Sodium hydroxide aqueous solution adjusts the pH=13 of the system to obtain the required behenylamine polyoxyethylene (3) polyoxypropylene (10) polyoxyethylene (3) ether dihydroxypropanesulfonic acid diethanolamine salt surfactant S -3.

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Abstract

The invention relates to a double hydrophilic head-based anionic surfactant and a preparation method thereof, and mainly aims at solving the problem that in the prior art, a surfactant serving as an oil-displacing agent system component is poor in high temperature resistance, salt resistance and especially divalent cation resistance. According to the technical scheme, a general molecular formula of the double hydrophilic head-based anionic surfactant is as followed (please see the formula in the specification), wherein R1 represents C8-C10 aliphatic alkyl or aryl substituted by C4-C20 straight-chain or branch-chain saturated and unsaturated alkyl, R2 and R'2 are independently selected from at least one of C1-C5 alkylene or hydroxy-substituted alkylene, Y and Y' are independently selected from SO3M or COON, and M and N are independently selected from hydrogen or alkali metal or at least one of groups shown in a formula NR3(R4)(R5)(R6). Accordingly, the problem is better solved, and the double hydrophilic head-based anionic surfactant can be applied to production for increasing the crude oil recovery ratio in an oil field.

Description

technical field [0001] The invention relates to a double hydrophilic head group anionic surfactant and a preparation method thereof. Background technique [0002] Enhanced oil recovery technology, that is, the enhanced (EOR) and improved (IOR) oil recovery technology commonly referred to abroad, can be summarized as improving water flooding, chemical flooding, heavy oil thermal recovery, gas flooding, microbial oil recovery and physical oil recovery, etc. Six aspects. At present, the enhanced oil recovery technologies that have entered the large-scale application in mine fields are concentrated in three categories: thermal recovery, gas flooding and chemical flooding, of which the production of chemical flooding is 5.18×10 4 m 3 / d or more, accounting for about 14.7% of the world's total EOR production. Chemical flooding is an enhanced measure to enhance oil recovery by adding chemical agents to the aqueous solution to change the physical and chemical properties and rheol...

Claims

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Application Information

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IPC IPC(8): C09K8/584C08G65/334C08G65/332C08G65/26
Inventor 沈之芹李应成吴春芳何良好
Owner CHINA PETROLEUM & CHEM CORP
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