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. 21, 2025
Filed:
Dec. 06, 2022
China National Petroleum Corporation, Beijing, CN;
Cnpc Engineering Technology R&d Company Limited, Beijing, CN;
Jiajin Wang, Beijing, CN;
Weimin Mao, Beijing, CN;
Weiping Ai, Beijing, CN;
Yifeng Fan, Beijing, CN;
Xiurong Dou, Beijing, CN;
Hengtian Jia, Beijing, CN;
Peng Wang, Beijing, CN;
Zhigang Wei, Beijing, CN;
Lei Wang, Beijing, CN;
Xianwei Guo, Beijing, CN;
China National Petroleum Corporation, Beijing, CN;
CNPC Engineering Technology R&D Company Limited, Beijing, CN;
Abstract
The present disclosure discloses a mud pressure wave signal modulation apparatus and method, which relate to the technical field of petroleum drilling engineering. The apparatus includes: a motor (), a valve plate (), a main control circuit (), a motor drive control circuit, and a downhole communication circuit; the valve plate () is driven by the motor () to be rotated around an axial direction perpendicular to a flow direction of drilling fluid; the motor () and the valve plate () are disposed in a drilling fluid channel (), and the drilling fluid channel (), the motor (), the valve plate (), the main control circuit (), the motor drive control circuit and the downhole communication circuit are disposed in a drill collar.