Primary Emulsifier

Primary Emulsifier

Primary Emulsifier OVERVIEW

The primary emulsifier is generally a fatty acid or modified fatty acid with a lower HLB value. The secondary emulsifier has a higher HLB value, which can stabilize the emulsion and also wet the solid phase. Primary emulsifiers are used to reduce interfacial tension between the liquid phases and hence make the internal phase dispersible

Primary Emusifier is a liquid blend of selected Primary emulsifier. It is essentially Polyaminated Fatty acid and is used to emulsify Water into Oil in Oil /Diesel based drilling fluids .It provides excellent emulsion stability, acts as a wetting agent, gelling agent and fluid stabilizer in a mineral oil base. It is also used for filtration control and for temperature stability.

In this study, the primary emulsifier was obtained from the reaction of fatty acid and maleic anhydride. The synthesis method is reported in reference [13]. The hydrophilic groups are carboxylic acids and the hydrophobic groups are long chain fatty acids. The bivalent soap salt generated by the reaction between the carboxylic acid groups and CaO in the OBM not only has strong hydrophilic property but also increases emulsion stability based on the directional wedge theory

Application of Primary Emulsifier

Primary Emulsifier is used as a primary emulsifier providing Excellent and very Stable Emulsion and oil wetting agent. It contributes to temperature stability and HTHP filtration control and is most effective over a wide range of temperatures and also in the presence of contaminants .It provides viscosity and filtration control and temperature stability.

Primary Emulsifier Advantage

It is multipurpose product which may be used in a wide variety of oil mud system.

It improves emulsion stability and functions as a secondary wetting agent.

Provides viscosity & filtration control.

Improves thermal stability.

Works effectively over a wide range of temperatures

Helps lower filtration rates

Helps form stable water-in-oil emulsions

Helps impart high temperature stability to oil-based fluids Can be added directly to the system

Resists electrolyte contamination

Primary Emulsifier Typical Properties:

Appearance Dark Brown Liquid
Viscosity (cps) 100 Minimum
Density 0.85 – 1.00 g/cm3

Primary Emulsifier Packaging:

Primary Emulsifier is packed in 55Gal/208 Ltr Ms drums. Private Labeling and customized packaging is also available on request


Emulsifiers are a liquid blend of selected emulsifiers, gelling agents, wetting agents and fluid loss control agents used to form an emulsion.

A chemical used in preparation and maintenance of an oil- or synthetic-base drilling fluid that forms a water-in-oil emulsion (invert emulsion). An oil-mud emulsifier lowers the interfacial tension between oil and water, which allows stable emulsions with small drops to be formed.

Historically, oil-mud emulsifiers have been classified as primary and secondary. Secondary emulsifiers are generally not used alone to make a stable oil mud. Emulsifiers can be calcium fatty-acid soaps made from various fatty acids and lime, or derivatives such as amides, amines, amid amines and Imidazoline made by reactions of fatty acids and various ethanolamine compounds. These emulsifiers surround water droplets, like an encapsulating film, with the fatty acid component extending into the oil phase. Emulsifier molecules that cannot fit around drops form clusters (micelles) in the oil phase or adsorb onto solids. Oil-mud emulsion drops each behave like a small osmotic cell. The emulsifier around the drops acts like a semi permeable membrane through which water can move but ions cannot pass. Thus, oil muds have the special capability (which water muds do not have) to control water transfer to and from the drops simply by adjusting salinity within the water phase of the oil mud.

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