Bionic and dual-phobic high-performance water-based drilling fluid

US11787990B2 · kind B2 · utility

Assignees

• China University of Petroleum—Beijing · CN
• CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED · CN
• CNPC Engineering Technology R&D Company Limited · CN

Inventors

• Guancheng Jiang · Beijing, CN
• Jinsheng Sun · Qingdao, CN
• Yinbo He · Beijing, CN
• Xin Zhang · Zhenjiang, CN
• Chunyao Peng · Beijing, CN
• Tengfei Dong · Beijing, CN
• Bin Tan · Sichuan, CN
• Tie Geng · Beijing, CN
• Lili Yang · Pasadena, US
• Xiaohu Luo · Wuxi, CN
• Xuwu Luo · Karamay, CN
• Xing Liang · Shanghai, CN
• Changwei Chen · Beijing, CN
• Xiaobo Liu · Beijing, CN
• Rongchao Cheng · Beijing, CN
• Jiansheng Luo · Beijing, CN
• Jianguo Zhang · Dizhai, CN
• Yong Wang · Beijing, CN
• Daqi Fu · Beijing, CN
• Qifa Ran · Chengdu, CN
• Li Zhao · Beijing, CN
• Kaixiao Cui · Beijing, CN
• Xiaoxiao Ni · Beijing, CN

Key dates

• Filing date: Dec 30, 2022
• Grant date: Oct 17, 2023
• Expiry date: Dec 30, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2208/34
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to the field of petroleum industry phase oilfield chemistry, and specifically relates to a bionic and dual-phobic drilling fluid. The drilling fluid contains a bionic wall-fixing agent, a bionic lubricant, a super dual-phobic agent, a scrap-carrying agent and a bionic shale inhibitor. The present invention uses the theory of bionics and the theory of a downhole rock surface being double phobic as a basis. By means of using the bionic wall-fixing agent, the bionic lubricant, the super dual-phobic agent, the scrap-carrying agent and the bionic shale inhibitor, which have special properties of imitating animals and plants in nature, and using a series of bionic treatment agents, a set of bionic and dual-phobic drilling fluid systems, which corresponds to an unconventional, complex oil and gas well, is formed.