Oil well cement settlement stabilizer for high-temperature cementing of oil and gas wells and preparation method thereof, and cement slurry

US10655048B1 · kind B1 · utility

Assignee

• CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) · CN

Inventors

• Chengwen Wang · Shandong, CN
• Huan Wang · Suzhou, CN
• Zizhen Wang · Qingdao, CN
• Yucheng Xue · Qingdao, CN
• Ruihe Wang · Shandong, CN
• Xin Chen · Shanghai, CN
• Wenfei Li · Guizhou, CN

Key dates

• Filing date: Feb 14, 2019
• Grant date: May 19, 2020
• Expiry date: Feb 14, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2800/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An oil well cement settlement stabilizer is ternary cement settlement stabilizer or quaternary cement settlement stabilizer; wherein the quaternary cement settlement stabilizer containing structural units A represented by formula (I), structural units B represented by formula (II), structural units C represented by formula (III), and structural units D represented by formula (IV); Wherein the ternary cement settlement stabilizer containing structural units A represented by formula (I), structural units B represented by formula (II), and structural units D represented by formula (IV);