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. 10, 2020
Filed:
Oct. 21, 2019
Applicants:
Cnpc Usa Corporation, Houston, TX (US);
Beijing Huamei Inc. Cnpc, Beijing, CN;
Inventors:
Jianhui Xu, Katy, TX (US);
Ming Zhang, Spring, TX (US);
Chris Cheng, Houston, TX (US);
Yu Liu, Beijing, CN;
Xiongwen Yang, Beijing, CN;
Assignees:
CNPC USA Corporation, Houston, TX (US);
Beijing Huamei Inc., Beijing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 28/00 (2006.01); E21B 41/02 (2006.01); E21B 31/00 (2006.01);
U.S. Cl.
CPC ...
E21B 41/02 (2013.01); E21B 31/005 (2013.01);
Abstract
The tool assembly vibrates a casing string or drill string in a wellbore. The tool assembly includes a housing, an insert mounted in the housing as a fluidic agitator, a coating on the insert, and a cover fitted over the insert. The coating on the insert provides erosion resistance and a smooth surface compatible with high velocity fluid flow required to achieve the strength and frequency of desired high strength and low frequency pressure pulses.