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:
Oct. 14, 2025
Filed:
Sep. 26, 2024
Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, CN;
Yuliang Wang, Beijing, CN;
Wenxiu Zhang, Beijing, CN;
Qihui Zhen, Beijing, CN;
Jiansheng Du, Beijing, CN;
Jing Ou, Beijing, CN;
Xinzhen He, Beijing, CN;
Jiwen Xiao, Beijing, CN;
Hui Wu, Beijing, CN;
Abstract
A method of encoding and decoding downlink instructions based on mud flow rate includes an encoding method and a decoding method. The encoding method and the decoding method are configured to transmit and receive instructions by controlling the mud flow rate during drilling process. The method of encoding and decoding downlink instructions based on mud flow rate does not require a fixed threshold of voltage as a judgement standard for '0' and “1” symbols, but uses voltage change rate as a standard for judging the level transition, avoiding decoding failure caused by the inability of voltage sampling values to reach the fixed threshold after well depth is increased.