OBM-Filtration Control is a high-quality grade of natural asphalt-based agents that is widely used in oil-based mud systems to minimize filtration and forming thin filter-cake in wellbore surface in high temperatures (up to 300 Fahrenheit degrees). OBM-Filtration Control is modified Gilsonite which is excellent filtration control in temperatures above 160 °F. It is soluble in crude oil in high temperatures, and increases emulsion stability of oil-based mud in different mud densities and oil/water ratios.


  • Forming high quality filter cake on wellbore walls
  • Provides excellent filtration characteristics
  • Compatible with most types of regular oil-based muds
  • Easy to mix
  • Stable up to 300°F
  • Increase emulsion stability characteristic
  • Minimize filtration damage in reservoir formations