Carbon-dioxide-responsive self-thickening intelligent fluid based on supramolecular self-assembly

US11952536B2 · kind B2 · utility

Assignee

• PetroChina Company Limited · CN

Inventors

• Chunming Xiong · Beijing, CN
• Falin Wei · Beijing, CN
• Haiyang Yang · Beijing, CN
• Yongjun Xie · Beijing, CN
• Liming Shao · Beijing, CN
• Kang Peng · Taipei, TW
• Zhihui Zeng · Beijing, CN

Key dates

• Filing date: May 9, 2022
• Grant date: Apr 9, 2024
• Expiry date: Oct 14, 2042

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/164
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Disclosed is a carbon-dioxide-responsive self-thickening intelligent fluid based on supramolecular self-assembly, which comprises a Gemini surfactant, a single-chain amide molecule having a tertiary amine head group and water, wherein the Gemini surfactant and the single-chain amide molecule are self-assembled to form a vesicle structure dispersed in water, with a hydrophilic head group being located outside and a hydrophobic tail group located inside. The method for preparing the carbon-dioxide-responsive self-thickening intelligent fluid of the present invention is simple, the injection viscosity is low, and the fluid is converted into a gel when encountering carbon dioxide, so that the viscosity is greatly increased.