Surfactant composition and preparation method therefor and application thereof

US11286416B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC · CN

Inventors

• Yingcheng Li · Shanghai, CN
• Songyuan Gu · Beijing, CN
• Weidong Zhang · Shanghai, CN
• Xinning Bao · Shanghai, CN
• Ou Sha · Shanghai, CN
• Zhiqin Shen · Shanghai, CN
• Yiqing Yang · Shanghai, CN
• Xiaodong Zhai · Shanghai, CN

Key dates

• Filing date: Nov 21, 2019
• Grant date: Mar 29, 2022
• Expiry date: Dec 3, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/584
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

This invention relates to a surfactant composition, production and use thereof in tertiary oil recovery. The present surfactant composition comprises a cationic-nonionic surfactant and an anionic surfactant, and exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present surfactant composition, a flooding fluid composition for tertiary oil recovery with improved oil displacement efficiency and oil washing capability as compared with the prior art could be produced.