Aryl-substituted saccharides or glycosides and use thereof in a drilling fluid composition

US11952530B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• SINOPEC PETROLEUM ENGINEERING TECHNOLOGY SERVICE CO., LTD · CN
• Drilling Engineering Technology Research Institute of Sinopec Zhongyuan Petroleum Engineering Co., LTD · CN
• SINOPEC ZHONGYUAN PETROLEUM ENGINEERING CO., LTD · CN

Inventors

• Xiqiang Si · Baofeng County, CN
• Zhonghua Wang · Shijiazhuang, CN
• Weiting Li · Baofeng County, CN
• Jun Wei · Baofeng County, CN
• Zhongjin Wang · Nanhu, CN
• Yuebin Lv · Baofeng County, CN

Key dates

• Filing date: Nov 29, 2019
• Grant date: Apr 9, 2024
• Expiry date: Apr 8, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F283/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

An aryl-substituted saccharide or glycoside or a mixture of a plurality of aryl-substituted saccharides or glycosides have at least good resistance to high temperatures and salt, and lower filtration loss. These aryl-substituted saccharide or glycoside are used in making a drilling fluid composition. The aryl-substituted saccharide or glycoside or the mixture of a plurality of aryl-substituted saccharides or glycosides each or in combination bears a substituent A and a substituent B, wherein the substituent A contains a unit —O—R6— in its structure and the substituent B contains a unit in its structure, and the substituents and the numbers are defined in the description.