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.
Type:
Grant
Filed:
October 18, 2013
Date of Patent:
May 24, 2016
Assignees:
CHINA PETROLEUM & CHEMICAL CORPORATION, DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC OILFIELD SERVICE SHENGLI CORPORATION
Abstract: The present disclosure relates to a downhole casing expansion tool and to a method of expanding casings using the same. The expansion tool comprises 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 according to the present disclosure, so that monohole well drilling and completion operations can be carried out. The expansion tool according to the present disclosure is particularly suitable for constructions in deep, ultra-deep and complex wells.
Type:
Application
Filed:
October 18, 2013
Publication date:
April 24, 2014
Applicants:
Drilling Technology Research Institute of Sinopec Oilfield Service Shengli Corporation, China Petroleum & Chemical Corporation