invert emulsion | Energy Glossary

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invert emulsion

1. n. []

An emulsion in which oil is the continuous or external phase and water is the internal phase. Invert emulsion usually refers to an oil-base mud, and the terms are considered synonyms. Invert-emulsion muds can be run with 5 to 50% water in the liquid phase, although there are systems that are 100% oil.

See: emulsion mudinterfacial tensioninvert-emulsion oil mudoil-base mudsurface tension