The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Dec. 27, 2022
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Oilfield Service Corporation, Beijing, CN;
Sinopec Shengli Petroleum Engineering Co., Ltd, Shandong, CN;
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering, Shandong, CN;
Zhongshuai Chen, Shandong, CN;
Xueliang Pei, Shandong, CN;
Zhonghua Wu, Shandong, CN;
Zhihe Liu, Shandong, CN;
Feng Liu, Shandong, CN;
Wei Zhuang, Shandong, CN;
Renlei Ning, Shandong, CN;
Kai Gao, Shandong, CN;
Guiting Wang, Shandong, CN;
Haobo Li, Shandong, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SINOPEC OILFIELD SERVICE CORPORATION, Beijing, CN;
SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, Shandong, CN;
DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING, Shandong, CN;
Abstract
A coring tool, a coring method, and use thereof are provided. The coring tool has a differential device for selective force transmission and a core gripping device for core cutting operations arranged within the housing. The core gripping device has a retractable core gripper, a slip-collar type core gripper and a shielding mechanism. The shielding mechanism is configured to be actuated by the differential device, so that the slip-collar type core gripper is shielded during coring operation and a first core cutting operation to avoid accidental core cutting operation, and to be exposed during a second core cutting operation to complete the whole core cutting operation.