Accelerator used for drilling fluids, water-based drilling fluid and usage thereof

US10266744B2 · kind B2 · utility

Assignee

• China University of Petroleum—Beijing · CN

Inventors

• Guancheng Jiang · Beijing, CN
• Deli Gao · Beijing, CN
• Shuo Zhang · Oettingen, DE
• Yong Wang · Beijing, CN
• Xianzhu Wu · Beijing, CN
• Liexiang Han · Beijing, CN
• Xiangzeng Wang · Beijing, CN
• Chunyao Peng · Beijing, CN
• Yinbo He · Beijing, CN
• Fan Liu · Taipei, TW
• Hongguo Zuo · Beijing, CN
• Yongqing Zhang · Nanjing, CN
• Lili Yang · Pasadena, US
• Zhong Li · Beijing, CN
• Yanjun Li · 安丰镇, CN

Key dates

• Filing date: Sep 13, 2018
• Grant date: Apr 23, 2019
• Expiry date: Sep 13, 2038

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 well drilling field in the petroleum industry, particularly to accelerator used for drilling fluids, water-based drilling fluid and usage thereof. The accelerator contains: sulfonated polyglycerol long-chain fatty acid ester, fatty alcohol polyoxyethylene ether, alcohol ether carboxylate, glycidyl ether, and polyoxyethylene alkylphenol ether; wherein, the weight ratio of the sulfonated polyglycerol long-chain fatty acid ester:the fatty alcohol polyoxyethylene ether:the alcohol ether carboxylate:the glycidyl ether:the polyoxyethylene alkylphenol ether is 100:1-10:0.5-10:1-10:1-10. The accelerator provided in the present invention can lubricate the drill bit and drilling tool, prevent accumulation of drill cuttings, reduce friction, and improve rate of penetrate.