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:
Jun. 05, 2018
Filed:
Apr. 14, 2016
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Vikrant Bhavanishankar Wagle, Mumbai, IN;
Shadaab Syed Maghrabi, Thane, IN;
Sharath Savari, Hyderabad, IN;
Sandeep D. Kulkarni, Pune, IN;
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/035 (2006.01); C09K 8/28 (2006.01); E21B 7/00 (2006.01); C09K 8/36 (2006.01);
U.S. Cl.
CPC ...
C09K 8/035 (2013.01); C09K 8/28 (2013.01); C09K 8/36 (2013.01); E21B 7/00 (2013.01);
Abstract
An invert emulsion drilling fluid, and a method of drilling with such fluid, having improved rheology at low mud weights and high temperatures. The improved rheology is effected with addition of a rheology additive of the invention comprising fatty dimer diamines or dimer diamines and an organic acid or ester of the acid. A nonlimiting example of such a rheology additive comprises a C36 fatty dimer diamine and adipic acid or dimethyl adipate.