Self-emulsifier and use thereof in tertiary oil recovery

A self-emulsifier and emulsifier technology, which is applied in drilling compositions, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of serious emulsification of strong alkali produced liquid, corrosion and scaling, and production capacity decline. , to achieve the effect of easy operation of process conditions, stable emulsification system and low production cost

Active Publication Date: 2010-12-29
大庆高新区华龙祥化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Although the ASP ASP flooding technology has achieved good results in field applications in recent years, due to the presence of active components such as strong alkali and surfactant in the ASP composite system, there are different degrees of residual oil in the reservoir and

Method used

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  • Self-emulsifier and use thereof in tertiary oil recovery
  • Self-emulsifier and use thereof in tertiary oil recovery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Alkylamide betaine 25%, carboxylic acid type amino acid type zwitterionic surfactant 13.5%, amine oxide surfactant 13.5%, fatty alcohol polyoxyethylene ether 5%, polyoxyethylene sorbitan Monooleate 3.7%, nonylphenol polyoxyethylene ether 2.3%, fatty acid methyl ester ethoxylate 1.5%, C 6 -C 18 The self-emulsifier was obtained under the conditions of 1.7% fatty alcohol, 0.8% triethanolamine, 0.5% glyceride, 32.5% water, heating temperature 65°C and stirring time 30min.

Embodiment 2

[0012] Embodiment 2: 30% of alkylamide betaine, 24% of carboxylic acid type amino acid type zwitterionic surfactant, 14% of amine oxide surfactant, 1% of fatty alcohol polyoxyethylene ether, polyoxyethylene sorbitan Monooleate 0.7%, nonylphenol polyoxyethylene ether 1.3%, fatty acid methyl ester ethoxylate 0.5%, C 6 -C 18 A self-emulsifier was obtained under the conditions of 3.7% fatty alcohol, 2.3% triethanolamine, 0.5% glyceride, 22% water, heating temperature 65°C and stirring time 30min.

Embodiment 3

[0013] Embodiment 3: Alkylamide betaine 24%, carboxylic acid type amino acid type zwitterionic surfactant 9%, amine oxide surfactant 5%, fatty alcohol polyoxyethylene ether 2%, polyoxyethylene sorbitan Monooleate 3%, Nonylphenol Polyoxyethylene Ether 1%, Fatty Acid Methyl Ethoxylate 1%, C 6 -C 18 The self-emulsifier was obtained under the conditions of 0.6% fatty alcohol, 0.4% triethanolamine, 0.5% glyceride, 53.5% water, heating temperature 65°C and stirring time 30min.

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Abstract

The invention discloses a self-emulsifier and use thereof in binary compound tertiary oil recovery. The emulsifier comprises the following components in percentage by mass: 24 to 30 percent of alkyl amido betaine, 9 to 24 percent of carboxylic amino acid type amphoteric nonionic surfactant, 5 to 14 percent of amine oxide surfactant, 1 to 5 percent of fatty alcohol-polyoxyethylene ether, 0.7 to 3.7 percent of polyoxyethylene sorbitan monooleate, 1 to 2.3 percent of nonyl hydroxybenzene polyethoxylate ether, 0.5 to 1.5 percent of fatty acid methyl ester ethoxylate, 0.6 to 3.7 percent of C6 to C8 fatty alcohol , 0.4 to 2.3 percent of triethanolamine, 0.5 percent of monoglycerylester palmitate and the balance of water. The emulsifier prepared by the method emulsifies crude oil under the condition of low shearing force or no external force of a binary compound system and makes an emulsifying system stable.

Description

Technical field: [0001] The invention relates to a self-emulsifying agent and its application in tertiary oil recovery. Background technique: [0002] Although the ASP ASP flooding technology has achieved good results in field applications in recent years, due to the presence of active components such as strong alkali and surfactant in the ASP composite system, there are different degrees of residual oil in the reservoir and produced fluid. Emulsification, the emulsification in the oil reservoir plays a role in promoting the recovery factor, because the ASP ternary compound system has problems such as the decline of production capacity, serious emulsification of strong alkali production fluid, and corrosion and scaling. Therefore, the mine adopts the binary compound flooding technology to solve the problems caused by the strong alkali in the triple compound flooding technology and has achieved good results. The binary compound system lacks the effect of alkali on emulsificat...

Claims

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Application Information

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IPC IPC(8): B01F17/00C09K8/584C09K23/00
Inventor 孙安顺
Owner 大庆高新区华龙祥化工有限公司
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