The Megadrive P primary high-performance emulsifier is the primary emulsifier in the MEGADRIL oil-based temperature-stable invert-emulsion drilling fluid system to be used in conjunction with the MEGADRIVE S secondary high-performance emulsifier. Designed for oil-based drilling fluids, it provides excellent emulsion stability, filtration control, and temperature stability.

The MEGADRIVE P emulsifier forms the basic brine-in-oil emulsion required for any nonaqueous fluid. Initial system formulations require 3 to 8 lbm/bbl [11.4 to 22.8 kg/m3], depending on the properties desired and other components in the system. Daily treatments of the MEGADRIVE P emulsifier enhance the emulsion characteristics of these systems; daily treatments are usually in the 0.05- to 2-lbm/bbl [0.14- to 5.7-kg/m3] range.