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:
Jul. 09, 2024
Filed:
Sep. 11, 2020
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Petroleum Engineering Technology Research Institute Co., Ltd, Beijing, CN;
Haiping Zhang, Beijing, CN;
Yanbin Zang, Beijing, CN;
Guangjun Ma, Beijing, CN;
Jiachang Wang, Beijing, CN;
Mingguang Sun, Beijing, CN;
Xinghua Tao, Beijing, CN;
Lingchao Xuan, Beijing, CN;
Xiaodan Liu, Beijing, CN;
Renlong Zhang, Beijing, CN;
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Petroleum Engineering Technology Research Institute Co., Ltd., Beijing, CN;
Abstract
A drilling tool has an upstream drilling string, a downstream drilling bit, and a percussive device connected between the upstream drilling string and the downstream drilling bit. In a first state, the upstream drilling string is generated with elastic compression by the percussive device, and in a second state, the upstream drilling string releases the elastic compression to apply impacts on the downstream drilling bit through the percussive device. The drilling tool has a prolonged service life and can effectively reduce the drilling cost.