Oil-soluble coated particle flow modifier for fractured-vuggy carbonate reservoir and preparation method and use thereof

US10442976B1 · kind B1 · utility

Assignees

• CHINA UNIVERSITY OF GEOSCIENCES (BEIJING) · CN
• CHINA UNIVERSITY OF PETROLEUM (EAST CHINA) · CN

Inventors

• Qing You · Beijing, CN
• Caili Dai · Qingdao, CN
• Long He · Shanghai, CN
• Jichao Fang · Shandong, CN
• Baolei Jiao · Ürümqi, CN
• Liang Li · Berkeley, US
• Guang Zhao · Qingdao, CN
• Yifei Liu · Beijing, CN
• Yan Zhang · Suzhou, CN
• Pan Wang · Shanghai, CN

Key dates

• Filing date: Feb 14, 2019
• Grant date: Oct 15, 2019
• Expiry date: Feb 14, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2208/08
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

An oil-soluble coated particle flow modifier, a preparation method thereof, and a use thereof in fractured-vuggy carbonate reservoirs mining. The oil-soluble coated particle flow modifier is of a core-shell structure, which has a core layer of a coated core and a shell layer of a coating agent, wherein the coated core is made of a plugging material, and the coating agent consists of petroleum resin and hollow beads. Based on the total weight of the coated particle flow modifier, the content of the petroleum resin, the hollow beads, the cotton linters, and the coated cores is 10-40 wt %, 9-40 wt %, 1-10 wt %, and 35-80 wt %, respectively. A preparation method of the coated particle flow modifier and a use of the coated particle flow modifier in fractured-vuggy carbonate reservoirs mining to improve oil recovery is also provided.