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:
Nov. 18, 2025
Filed:
May. 31, 2023
China Petroleum & Chemical Corporation, Beijing, CN;
Sheng Zhan, Houston, TX (US);
Sam Seldon, Houston, TX (US);
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
Abstract
A mud pulser includes an inlet assembly, a main-valve assembly, a servo-valve assembly, a motor assembly and a collar. The servo-valve assembly has a servo-valve, which includes a servo-valve plugging member and a servo-valve chamber housing the servo-valve plugging member and having a first orifice and a second orifice. A servo-valve shaft is connected to the servo-valve plugging member and configured to be driven to perform a reciprocating movement that causes the servo-valve plugging member to alternately block the first orifice and the second orifice. The alternate blocking of the first orifice and the second orifice triggers movements in the main-valve assembly to restrict or release mud flow to generate mud pulse.