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An advanced drilling fluid coupler

Simply put, the addition of MulSperse optimizes the properties of water-based drilling fluids.

  • Disperses gilsonite/asphalt additives
  • Improves cuttings discharge handling
  • Positive effect on rheological properties
  • Broad range efficiency
  • Reduces sheening

MulSperse is a liquid wetting agent/coupler designed to enhance the process of water-wetting additives in the drilling fluid system. For most additives to be effective, they must be maintained in a dispersed state.

MulSperse is a primary agent in managing the wettability of solids in the mud system by preventing solid hydrocarbons, such as gilsonite and other asphaltic-type materials from clumping or agglomerating, thus minimizing the cost related to the loss of additives across the shaker screens.

MulSperse can be an integral part of your system when you need oil-based mud performance in a water-based mud environment.

Physical Properties

  • Specific gravity: 1.02
  • Appearance: Clear amber liquid
  • Flashpoint COC: 200°F/93°
  • pH: 10-10.
  • Pour point: 25°F (-4°C)


  • Drilling fluid: 0.1% – 1%


5-gallon pails (18.9 liters)

55-gallon drums (208 liters)