Use of selected ester oils in drilling fluids and muds
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United States of America
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Jan 26, 1999
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N/A
app pub date -
Aug 1, 1995
filing date -
Dec 19, 1988
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Abstract
Invert emulsion muds for drilling of gas and oil, which are environmentally safe, and which contain: A. a continuous oil phase composed predominantly of at least one monocarboxylic acid ester of a C.sub.2 -C.sub.12 monofunctional alkalol wherein the monocarboxylic acid contains from 16 to 24 carbon atoms and is olefinically mono- or poly-unsaturated, B. a disperse aqueous phase, C. at least one emulsifier, D. at least one weighing agent, E. at least one fluid loss additive, and F. a mild alkaline reserve.
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