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. 30, 2021
Filed:
Nov. 26, 2015
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 37/00 (2006.01); C09K 8/536 (2006.01); C09K 8/52 (2006.01); C09K 8/08 (2006.01); C09K 8/42 (2006.01); C09K 8/528 (2006.01); E21B 33/14 (2006.01); E21B 37/10 (2006.01);
U.S. Cl.
CPC ...
C09K 8/536 (2013.01); C09K 8/08 (2013.01); C09K 8/42 (2013.01); C09K 8/52 (2013.01); C09K 8/528 (2013.01); E21B 33/14 (2013.01); E21B 37/00 (2013.01); C09K 2208/08 (2013.01); E21B 37/10 (2013.01);
Abstract
Aqueous fluids containing hydrophobic particles are effective media for cleaning water-base drilling fluids and drilling fluid solids from the interior surface of a casing string. Hydrophobic fibers may be added to a drilling fluid, a spacer fluid, a sacrificial spacer fluid, a chemical wash, or combinations thereof. The disclosed fluids may be employed during primary cementing operations where it is not possible to use a bottom plug.
Fu, Diankui. (2021). Methods and compositions for cleaning interior of a casing string (U.S. Patent No. 11186760). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11186760
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile