Flow modifier particles, flow modifier, and preparation method and use thereof

US10494562B1 · kind B1 · utility

Assignees

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

Inventors

• Caili Dai · Qingdao, CN
• Qing You · Beijing, CN
• Jichao Fang · Shandong, CN
• Guang Zhao · Qingdao, CN
• Yifei Liu · Beijing, CN
• Mingwei Gao · Qingdao, CN
• Jiaping Tao · Qingdao, CN
• Pan Wang · Shanghai, CN

Key dates

• Filing date: Feb 14, 2019
• Grant date: Dec 3, 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

The flow modifier particle composition contain a viscoelastic base agent, a selective solubilizer, a density modifier, a sweller, and an optional plasticizer, wherein based on the total weight of the flow modifier particle composition, the content of the viscoelastic base agent is 30-90 wt %, the content of the selective solubilizer is 3-30 wt %, the content of the density modifier is 0.1-30 wt %, the content of the sweller is 1-30%, and the content of the plasticizer is 0-10 wt %. The present invention further discloses a flow modifier, which contains the flow modifier particle composition and a carrying fluid that contains water and a surfactant. The present invention further discloses a preparation method of the flow modifier, and a use of the flow modifier and the flow modifier particle composition in exploitation of fracture-cave reservoirs.