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:
Apr. 06, 2021
Filed:
Jan. 06, 2017
Applicant:
M-i L.l.c., Houston, TX (US);
Inventor:
Balakrishnan Panamarathupalayam, Houston, TX (US);
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/00 (2006.01); C09K 8/52 (2006.01); C08F 220/54 (2006.01); C09K 8/508 (2006.01); C09K 8/512 (2006.01); E21B 37/00 (2006.01); C09K 8/035 (2006.01); E21B 37/08 (2006.01); E21B 43/08 (2006.01); E21B 43/10 (2006.01); E21B 43/25 (2006.01); C08F 220/56 (2006.01); C09K 8/12 (2006.01); G01V 3/20 (2006.01); G01V 3/34 (2006.01); C08F 212/14 (2006.01); C08F 228/02 (2006.01);
U.S. Cl.
CPC ...
C09K 8/52 (2013.01); C08F 220/54 (2013.01); C08F 220/56 (2013.01); C09K 8/035 (2013.01); C09K 8/12 (2013.01); C09K 8/5083 (2013.01); C09K 8/512 (2013.01); E21B 21/003 (2013.01); E21B 37/00 (2013.01); E21B 37/08 (2013.01); E21B 43/082 (2013.01); E21B 43/10 (2013.01); E21B 43/25 (2013.01); G01V 3/20 (2013.01); G01V 3/34 (2013.01); C08F 212/14 (2013.01); C08F 228/02 (2013.01); C09K 2208/26 (2013.01);
Abstract
A wellbore fluid includes a base fluid; and a crosslinked and branched polymeric fluid loss control agent formed from at least an acrylamide monomer and a sulfonated anionic monomer; wherein the fluid loss control agent has an extent of crosslinking that is selected so that the fluid loss control agent has a viscosity that is within a peak viscosity response of the viscosity response curve.