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:
May. 03, 2022
Filed:
Aug. 05, 2020
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Andrey Yakovlev, Houston, TX (US);
Giselle Refunjol, Houston, TX (US);
Mei Ho, Houston, TX (US);
Bernhard Lungwitz, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K 8/10 (2006.01); C09K 8/473 (2006.01); C04B 18/24 (2006.01); C04B 20/00 (2006.01); C04B 28/02 (2006.01); C09K 8/467 (2006.01); C09K 8/70 (2006.01); B82Y 30/00 (2011.01); C04B 103/00 (2006.01); E21B 33/14 (2006.01); B82Y 40/00 (2011.01);
U.S. Cl.
CPC ...
C09K 8/473 (2013.01); C04B 18/24 (2013.01); C04B 20/006 (2013.01); C04B 28/02 (2013.01); C09K 8/10 (2013.01); C09K 8/467 (2013.01); C09K 8/70 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C04B 2103/0079 (2013.01); C09K 2208/08 (2013.01); C09K 2208/10 (2013.01); E21B 33/14 (2013.01);
Abstract
Methods herein may include injecting a cement slurry having an aqueous base fluid, a cement, and a plurality of cellulose nanofibers dispersed in the aqueous base fluid. The plurality of cellulose nanofibers may be present in the slurry in an amount effective to provide a slurry density of not higher than 15 lb/gal.