PSW Emulsifier is a specially formulated all-in-one emulsifier package designed for excellent emulsion stability in invert oil-based muds. It is a multi-function additive that provides a stable emulsion, satisfactory solids wetting, superior rheologies, and contributes to HTHP filtration control. It can be used in a wide variety of oil-based systems across a wide range of temperatures. Field tested in clay-free and conventional oil-based systems.


Safety: Always refer to the Safety Data Sheet for detailed information on shipping, handling, storage, and use.
Important: The information provided herein is believed to be accurate and reliable but is presented without guarantee. Further, nothing contained herein shall be taken as an inducement to violate any patent rights.


“After repeated attempts with competitor emulsifiers, we couldn’t push Emulsion Stability past 500 mV—persistent oil/water phase separation confirmed poor invert integrity. Switched to PSW Mul. With just 55 gallons, ES jumped to 800 mV. Stable emulsion, clean interface, no fallback. That’s the kind of performance we build programs around.”