Compositions of oil-based biodegradable drilling fluids and...

Details Compositions of oil-based biodegradable drilling fluids and... Compositions of oil-based biodegradable drilling fluids and...

2007-10-23

2007-10-23

Tucker, Philip C. (Department: 1712)

Earth boring, well treating, and oil field chemistry

Earth boring

Contains organic component

C507S119000, C507S137000, C507S138000, C507S140000

Reexamination Certificate

active

10341253

ABSTRACT:
Compositions of oil-based biodegradable drilling fluids are described, the compositions comprising an oil phase composed by methyl esters of soybean oil fatty acids, an aqueous phase finely dispersed in the oil phase by specific emulsifiers and several other additives having specific functions for providing suitable performance to the finished drilling fluid composition. The process to manufacture the inverted emulsion and the drilling process that employs the compositions of the invention are described too.

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patent: 5710111 (1998-01-01), Van Slyke
patent: RE36066 (1999-01-01), Mueller et al.
patent: 6218342 (2001-04-01), Patel
patent: 6589917 (2003-07-01), Patel et al.
patent: 6838082 (2005-01-01), Growcock et al.

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