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:
Jan. 29, 2019
Filed:
Jun. 21, 2012
Applicant:
Shaohua LU, Katy, TX (US);
Inventor:
Shaohua Lu, Katy, TX (US);
Assignee:
M-I L.L.C., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/22 (2006.01); C09K 8/68 (2006.01); C09K 8/035 (2006.01); C09K 8/504 (2006.01); C09K 8/506 (2006.01); E21B 36/00 (2006.01); E21B 21/00 (2006.01); C09K 8/40 (2006.01); E21B 43/04 (2006.01); E21B 43/16 (2006.01); G01N 33/26 (2006.01);
U.S. Cl.
CPC ...
C09K 8/035 (2013.01); C09K 8/40 (2013.01); C09K 8/506 (2013.01); C09K 8/5045 (2013.01); C09K 8/68 (2013.01); E21B 21/003 (2013.01); E21B 36/003 (2013.01); E21B 43/04 (2013.01); E21B 43/16 (2013.01); G01N 33/26 (2013.01); C09K 2208/30 (2013.01);
Abstract
Wellbore fluids may include at least one viscoelastic surfactant, a first brine solution including one or more water soluble monovalent cation salts, and a second brine solution including one or more water soluble divalent cation salts in an amount effective to increase the viscosity of the wellbore fluid. The wellbore fluid may be injected into a wellbore as a gravel packing agent, to enhance the thermal insulation of a production tubing or transfer pipe surrounded by at least one annuli, or to reduce fluid loss.