Alkyl phenol polyether diphenyl sulfonate oil displacement surfactant, composition and preparation method and application thereof

A technology of surfactant and bis-benzene sulfonate, which is applied in drilling compositions, chemical instruments and methods, chemical recovery and other directions, can solve the problems of high oil displacement efficiency and low oil displacement efficiency, and achieve improved recovery. rate, the effect of good technical effect

Active Publication Date: 2020-05-01
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 the problem of low oil displacement efficiency of surfactants in the prior art under high temperature and high salt conditions. A new preparation method of surfactants for oil recovery is provided. The surface active agents prepared by the method are The active agent has the characteristics of high oil displacement efficiency under high temperature and high salt conditions

Method used

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  • Alkyl phenol polyether diphenyl sulfonate oil displacement surfactant, composition and preparation method and application thereof
  • Alkyl phenol polyether diphenyl sulfonate oil displacement surfactant, composition and preparation method and application thereof
  • Alkyl phenol polyether diphenyl sulfonate oil displacement surfactant, composition and preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0047] 1. Surfactant Preparation

[0048] a) Add 1 mol of octylphenol and 0.1 mol of sodium hydroxide to a reactor equipped with a condensing device, a stirring device and a gas disperser, and heat to 85°C while blowing nitrogen, and then stir for 1 hour. Turn on the vacuum system, vacuumize and dehydrate for 1 hour at a temperature of 90°C, then purge 4 times with nitrogen to remove the air in the system, then adjust the reaction temperature of the system to 150°C and slowly introduce 2mol ethylene oxide to control The ethoxylation reaction is carried out at a pressure of ≤0.40MPa; after the reaction is completed, the system is purged with nitrogen, neutralized and dehydrated after cooling to obtain 0.98mol of octylphenol polyoxyethylene (2) ether.

[0049] b) Add 0.98 mol of octylphenol polyoxyethylene (2) ether obtained in step a) into a reactor equipped with a stirring device and a condensation reflux device, add 0.98 mol of benzyl chloride and 0.05 mol of copper chloride,...

Embodiment 2

[0059] 1. Surfactant Preparation

[0060] a) Add 1 mol of nonylphenol and 0.1 mol of sodium hydroxide into a reactor equipped with a condensing device, a stirring device and a gas disperser, and heat to 85°C while blowing nitrogen, then stir for 1 hour. Turn on the vacuum system, vacuumize and dehydrate for 1 hour at a temperature of 90°C, then purge 4 times with nitrogen to remove the air in the system, then adjust the reaction temperature of the system to 150°C, and slowly introduce 2mol ethylene oxide in sequence and 2mol propylene oxide, control the pressure ≤ 0.40MPa to carry out ethoxylation reaction; after the reaction, purging the system with nitrogen, neutralize and dehydrate after cooling, to obtain 0.94mol nonylphenol polyoxyethylene (2) polyoxypropylene (2) Ether.

[0061] b) Add 0.94mol of nonylphenol polyoxyethylene (2) polyoxypropylene (2) ether obtained in step a) into a reactor equipped with a stirring device and a condensation reflux device, add 0.94mol of b...

Embodiment 3

[0066] 1. Surfactant Preparation

[0067] a) Add 1 mol of dodecylphenol and 0.1 mol of sodium hydroxide into a reactor equipped with a condensing device, a stirring device and a gas disperser, and heat to 85° C. while blowing nitrogen, and react with stirring for 1 hour. Turn on the vacuum system, vacuumize and dehydrate for 1 hour at a temperature of 90°C, then use nitrogen to blow 4 times to remove the air in the system, then adjust the reaction temperature of the system to 150°C and slowly introduce 4mol ethylene oxide to control The ethoxylation reaction is carried out at a pressure of ≤0.40MPa; after the reaction is completed, the system is purged with nitrogen, neutralized and dehydrated after cooling to obtain 0.95mol of dodecylphenol polyoxyethylene (4) ether.

[0068] b) 0.95mol dodecylphenol polyoxyethylene (4) ether obtained in step a) is added to a reactor equipped with a stirring device and a condensation reflux device, 0.95mol benzyl chloride and 0.05mol copper c...

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Abstract

The invention relates to an alkyl phenol polyether diphenyl sulfonate oil displacement surfactant, a composition and a preparation method and application thereof, and mainly solves the problem of lowoil displacement efficiency of surfactants under high-temperature and high-salt conditions in the prior art. The surfactant for oil displacement for improving the crude oil recovery ratio is alkyl phenol polyoxyethylene polyoxypropylene ether diphenyl sulfonate; the structure is shown as a formula (I), wherein M1 and M2 are independently selected from any one of alkali metals and alkaline earth metals; n is 1 when M is an alkali metal, n1 is 0.5 when M1 is an alkaline earth metal, n2 is 1 when M2 is an alkali metal, n2 is 0.5 when M2 is an alkaline earth metal, R is C4-C30 alkyl, x is equal to1-20, and y is equal to 0-20. The problems are well solved, and the surfactant can be used in enhanced oil extraction production of oil fields.

Description

technical field [0001] The invention relates to a hydrocarbyl phenol polyether bisbenzene sulfonate oil displacement surfactant, a composition, a preparation method and an application thereof for increasing the oil recovery rate of crude oil. Background technique [0002] After the oil field enters the high water cut period, the remaining oil is trapped in the pores of the reservoir rocks in a discontinuous oil film. The two main forces acting on the oil droplets are viscous force and capillary force. The agent system can reduce the interfacial tension between oil and water, so that the interfacial tension between oil and water in the reservoir can be reduced from 20 to 30mN / m to a low or ultra-low value (10 -3 ~10 - 4 mN / m), it can reduce the resistance caused by the deformation of the oil droplets when the remaining oil is moved, thereby greatly improving the oil displacement efficiency. [0003] Surfactants modified by oil refining by-products such as petroleum sulfona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/338C08G65/337C08G65/326C09K8/584
CPCC08G65/338C08G65/326C08G65/337C09K8/584Y02P20/584
Inventor 鲍新宁孟勇郭榕沈少春
Owner CHINA PETROLEUM & CHEM CORP
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