Esters of carboxylic acids of medium chain-length as a component

Earth boring – well treating – and oil field chemistry – Earth boring – Contains organic component

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507129, C09K 702, C09K 706

Patent

active

054038227

ABSTRACT:
The invention describes the use of selected esters, fluid at room temperature and with flash points above 80.degree. C., from monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and mono- and/or polyfunctional alcohols as the oil phase or a component of the oil phase of invert drilling muds, which are suitable for environment-friendly development of petroleum and natural gas deposits and in a continuous oil phase contain a dispersed aqueous phase together with emulsifiers, weighting agents, fluid-loss additives and preferably further conventional additives. In a further embodiment the invention relates to invert-drilling fluids of the types mentioned, which are characterized in that the oil phase contains esters of monocarboxylic acids of synthetic and/or natural origin with 6 to 11 carbon atoms and with mono- and/or polyfunctional alcohols preferably in admixture with other components from the class of ecologically acceptable compounds.

REFERENCES:
"Vegetable Oils" in Kirk-Othmer Encyclopedia of Chemical Technology, 1982, vol. 23, pp. 717-731.

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