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mutual solvent

1. n. []

A chemical additive for stimulation treatments that is soluble in oil, water and acid-based treatment fluids. Mutual solvents are routinely used in a range of applications, such as removing heavy hydrocarbon deposits, controlling the wettability of contact surfaces before, during or after a treatment, and preventing or breaking emulsions. A commonly used mutual solvent is ethyleneglycolmonobutyl ether, generally known as EGMBE.