United States Patent Application: 20080009422
Serial No.: 772618
Series Code: 11
Applicant: M-I LLC
Inventors: Patel; Arvind D.; (Sugar Land, TX) ; Stamatakis; Emanuel; (Houston, TX) ; Young; Steve; (Cypress, TX) ; Friedheim; Jim; (Spring, TX)
Title: High performance water base drilling fluid
A water based drilling fluid which includes an aqueous fluid, at least one of a weighting agent and a gelling agent, and a lubricant, which includes at least one ester derivative of at least one fatty acid derived from castor oil is disclosed.