Oil displacement agent and process for preparing the same

US9080096B2 · kind B2 · utility

Assignees

• GEOSCIENCE RESEARCH INSTITUTE OF SHENGLI OILFIELD BRANCH, SINOPEC GEOSCIENCE RESEARCH INSTITUTE · CN
• Sichuan University · CN

Inventors

• Huanquan Sun · Baofeng County, CN
• Zhenquan Li · Shanghai, CN
• Xulong Cao · Dongying, CN
• Guangsu Huang · Chengdu, CN
• Xinwang Song · Dongying, CN
• Xiaohong Cui · Dongying, CN
• Kun Liu · New Taipei, TW
• Jing Zheng · Morton Grove, US
• Xiaoyan Chen · 红钢城街道, CN
• Zhiqing Su · Shanghai, CN
• Zuming Jiang · Chengdu, CN
• Jinrong Wu · Chengdu, CN

Key dates

• Filing date: Jan 14, 2011
• Grant date: Jul 14, 2015
• Expiry date: Jun 16, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10G1/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a new type of oil displacement agent and the process for preparing the same. The oil displacement agent is formed of a polyacrylamide-based polymer characterized by a partly crosslinked and partly branched structure, wherein said polyacrylamide-based polymer is obtained by aqueous copolymerization of acrylamide and N,N-dimethylaminoethyl methacrylate as a functional monomer, in the presence of a redox initiator system.