Downhole casing expansion tool and method of expanding casings using the same

US9347297B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC OILFIELD SERVICE SHENGLI CORPORATION · CN

Inventors

• Zuohui Li · Dongying, CN
• Ming TANG · Dongying, CN
• Liugen Wu · Dongying, CN
• Jianzhong Ma · Dongying, CN
• Peng Cai · Beijing, CN
• Zhigang Peng · Dongying, CN
• Wansheng Zhu · Dongying, CN
• Chenglei Tang · Dongying, CN
• Zhaozheng Teng · Dongying, CN
• Xuetao Ning · Dongying, CN
• Haibo Zhu · Lishui, CN
• Xuexiang Shen · Dongying, CN

Key dates

• Filing date: Oct 18, 2013
• Grant date: May 24, 2016
• Expiry date: Oct 17, 2034

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E21B43/103
• WIPO field: Civil engineering
• WIPO sector: Other fields

Abstract

A downhole casing expansion tool and a method of expanding casings using the same. The expansion tool includes an expansion module for expanding casings and a drive module for driving the expansion module. The diameter of the openhole can be kept consistent by the expansion tool, so that monohole well drilling and completion operations can be carried out. The expansion tool is particularly suitable for constructions in deep, ultra-deep and complex wells.