Product Description

OptiMul™ II emulsifier is a liquid blend of organic fatty acids which provides a stable water-in-oil emulsion. It is designed for use as the primary emulsifier for Newpark’s OptiDrill™ or OptiPhase™ diesel- or mineral oil-based drilling fluid.

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  • Provides a stable emulsion in a cost-effective manner
  • Allows adjustable concentrations to balance emulsion stability with increased ROP
  • Imparts oil-wetting characteristics
  • Performs effectively in the presence of contaminants


OptiMul II emulsifier can be added when first preparing the OptiDrill system or as a treating agent during drilling operations. The product is effective with NaCl, CaCl2 and NewPhase™ internal phases. It should be used in an alkaline environment. An excess of Ca(OH)2 (lime) should always be present in the fluid.

Typical Physical Properties

AppearanceYellow to dark amber liquid
Flash Point183°F (84°C)
Specific Gravity0.88

Handling and Storage

Store in a cool, dry, well-ventilated area away from ignition sources and strong oxidizing agents. Use appropriate hygiene, clothing and personal protective equipment suitable for work being done. Review the SDS thoroughly before using this product.


OptiMul II emulsifier is available in 55-gallon (208-liter) drums, 275-gallon (1,041-liter) totes and bulk quantities.

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