Anionic-cationic-nonionic surfactant, production and use thereof

US12037541B2 · 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: Oct 15, 2021
• Grant date: Jul 16, 2024
• Expiry date: Oct 15, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K8/602
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

An anionic-cationic-nonionic surfactant represented by the formula (I) exhibits significantly improved interfacial activity and stability as compared with the prior art. With the present anionic-cationic-nonionic surfactant, 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.