Product Description
Primary Emulsifier is a specialized liquid formulation composed of organic fatty acids, engineered to deliver exceptional emulsion stability and performance in oil-based drilling fluid systems. This advanced primary emulsifier is specifically designed to generate and maintain stable water-in-oil (W/O) emulsions, even under extreme high-pressure, high-temperature (HPHT) conditions. It functions through the formation of calcium soap in situ when combined with lime, creating a robust interfacial film that effectively encapsulates water droplets and prevents coalescence.
The mechanism of this primary emulsifier involves the adsorption of its amphiphilic molecules at the oil-water interface, significantly reducing interfacial tension and providing a strong steric and electrostatic barrier against droplet merger.
Applications/Functions
Serves as the primary emulsifier for diesel and mineral oil-based drilling fluids
Stabilizes brine-in-oil emulsions using calcium chloride or calcium bromide brines
Improves particle dispersion characteristics in high-density fluid systems
Promotes oil-wetting in inverse emulsion drilling fluids
Effectively disperses high-density particles to reduce sedimentation and sag
Enhances emulsion stability in tight oil and shale gas applications
Advantages
Effective performance at low treatment concentrations
Maintains temperature stability above 350°F (177°C)
Fully compatible with oil-based and synthetic-based mud additives
Provides excellent HPHT filtration control
Enhances overall rheological properties of drilling fluids
Reduces differential sticking tendencies through improved lubrication
Typical Properties
Appearance: Dark viscous liquid
Flash Point: >199°F (>93°C)
Pour Point: <14°F (<-10°C)
Specific Gravity: 0.93
Viscosity: 150-300 cP at 77°F (25°C)
pH: 8.5-10.5 (5% solution)
Recommended Treatment
Typical treatment range: 4-12 ppb (pounds per barrel)
Requires addition of 0.5 ppb lime per 1 ppb emulsifier for optimal performance
Pre-dilution recommended for uniform distribution in the mud system
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