Russian translation: общие потери бурового раствора на нефтяной основе, поглощенного породой
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16:26 Apr 8, 2007
English to Russian translations [PRO] Tech/Engineering - Petroleum Eng/Sci / Oil-Wetting
English term or phrase:Whole oil-mud loss
Oil-Wetting Reduces Permeability to Oil
Oil flows better against water-wet surface (poor against oil-wet).
Water flows better against oil-wet surface (poor against water-wet).
Sandstone almost always is originally water wet.
Solids become oil-coated, reducing permeability relative to oil.
Usually occurs from action of surfactants:
Cationic or amphoteric surfactants in sandstone.
Anionic surfactants in limestone at pH 0-8.
Whole oil-mud loss to formation.
Oil-base mud filtrate