METHOD OF PREPARING REVERSED DRILLING MUD CONTAINING MIXTURES OF SECONDARY ESTERS PRODUCED BY CONVERSION OF OLEFINS Russian patent published in 2003 - IPC

Abstract RU 2215017 C2

FIELD: drilling fluids. SUBSTANCE: reversed drilling muds are prepared by addition reaction of one or more C1-C5-carboxylic acids with one or more C3-C32- olefins in presence of acid catalyst with molecular weight 198-282. EFFECT: lowered viscosity and accelerated biodegradation. 6 cl, 3 dwg, 12 tbl, 20 ex

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RU 2 215 017 C2

Authors

Dzhi Dzheffri S.

Dates

2003-10-27—Published

1998-12-09—Filed