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. 25, 2023
Filed:
Apr. 29, 2014
Applicants:
M-i Drilling Fluids U.k. Limited, Aberdeen, GB;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Inventors:
Mostafa A. Tehrani, Kincardineshire, GB;
Louise Bailey, Cambridge, GB;
Assignee:
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/36 (2006.01); C09K 8/56 (2006.01); E21B 21/00 (2006.01);
U.S. Cl.
CPC ...
C09K 8/36 (2013.01); C09K 8/56 (2013.01); E21B 21/00 (2013.01);
Abstract
An invert emulsion fluid may include a oleaginous external phase, a nonoleaginous internal phase, wherein a ratio of the oleaginous external phase to nonoleaginous internal phase is less than 55:45, a emulsifier, a particulate weighting agent dispersed in the non-oleaginous internal phase, and a viscosifier stabilizing the dispersion of the particulate weighting agent in the non-oleaginous internal phase.