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. 26, 2020
Filed:
Aug. 09, 2016
Applicant:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Andrey Vladimirovich Yakovlev, Primorsk, RU;
Mohan Kanaka Raju Panga, Sugar Land, TX (US);
Valerie Gisele Helene Lafitte, Sugar Land, TX (US);
Jazmin Godoy-Vargas, Missouri City, TX (US);
Assignee:
Schlumberger Technology Corporation, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/00 (2006.01); C09K 8/40 (2006.01); C04B 28/04 (2006.01); C09K 8/467 (2006.01); C09K 8/42 (2006.01); C09K 8/528 (2006.01); C09K 8/035 (2006.01); C09K 8/46 (2006.01); C09K 8/516 (2006.01); E21B 33/14 (2006.01); E21B 37/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/40 (2013.01); C04B 28/04 (2013.01); C09K 8/035 (2013.01); C09K 8/424 (2013.01); C09K 8/46 (2013.01); C09K 8/467 (2013.01); C09K 8/516 (2013.01); C09K 8/528 (2013.01); E21B 21/00 (2013.01); E21B 33/14 (2013.01); E21B 37/00 (2013.01); C09K 2208/08 (2013.01); Y02W 30/97 (2015.05);
Abstract
Well treatment compositions comprise water, a polysaccharide and cellulose fibers. The cellulose fibers may have lengths between 100 nm and 10 mm, and diameters between 4 nm and 40 μm. The compositions may be used as spacer fluids during well cementing operations. The spacer fluids may prevent commingling of a cement slurry with a drilling fluid. The drilling fluid may be water-base, oil-base, synthetic-base or an emulsion.