High-performance primary emulsifier for invert-emulsion oil based mud

Abstract

An invert oil-based mud (OBM) includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier that has two hydrophilic head groups and a hydrophobic tail group. A method of using an invert oil-based mud (OBM) in a wellbore is provided. The method includes introducing the invert OBM, which includes an oleaginous continuous phase, an aqueous internal phase, and an emulsifier with two hydrophilic head groups and a hydrophobic tail group into the wellbore. A method of preparing an invert oil-based mud (OBM) is also provided. The method includes mixing an emulsifier comprising two hydrophilic head groups and a hydrophobic tail group with an oleaginous phase and an aqueous phase.

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