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:
Apr. 14, 2020
Filed:
Aug. 29, 2019
Applicant:
Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, CN;
Inventors:
Xinzhen He, Beijing, CN;
Qingyun Di, Beijing, CN;
Wenxuan Chen, Beijing, CN;
Jiansheng Du, Beijing, CN;
Qingbo Liu, Beijing, CN;
Yongyou Yang, Beijing, CN;
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 47/12 (2012.01); E21B 4/04 (2006.01); E21B 7/02 (2006.01); E21B 15/04 (2006.01);
U.S. Cl.
CPC ...
E21B 47/122 (2013.01); E21B 4/04 (2013.01); E21B 7/022 (2013.01); E21B 15/045 (2013.01); E21B 47/124 (2013.01);
Abstract
The present disclosure provides a device for power transmission and signal transfer between the stator and the rotor of a screw drilling tool. The present disclosure can replace the wireless communication technique between the rotary steering tool and the integrated MWD/LWD, omit the upper mud generator above the rotary steering tool, and thereby realize power transmission and signal transfer between the stator and the rotor of the screw drilling tool.