Oilfield Glossary
Oilfield Glossary
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demulsifier

1. n. [Drilling Fluids]
A chemical used to break emulsions (that is, to separate the two phases). The type of demulsifier selected depends on the type of emulsion, either oil-in-water or water-in-oil. Demulsifiers are used in the chemical analysis of oil and synthetic muds and to treat produced hydrocarbons.
Antonyms: emulsifier