Gilsonite in Oil Based Drilling Muds – FLC

Gilsonite is used as FLUID LOSS CONTROL additive or FLC in Oil based drilling muds (OBM). It can be applied according to its hydrocarbon nature and the proper softening point to cause a significant decrease in the loss of fluids during the drilling process. The Gilsonite Solubility in Oil matters (measured by solving in TCE, CCL4 & CS2) allows the additive to act well with the oil material of the drilling mud, in most cases diesel. Also, same characteristics results in composition of Gilsonite powder in synthetic based muds (SBM) since the base material is a polymer.

Advantages of Using Gilsonite as Fluid Loss Controller in Drilling Muds (OBM & SBM):

  • High softening point of Gilsonite (160 degrees Celsius and above) results in over 50% fluid loss reduction comparing to other additives.
  • Being a non-toxic material, Gilsonite adapts best to HSE limitation applied to Oil Based and Synthetic Based muds.
  • Elevates filter cake expansion.
  • Acts as Shale Stabilizer
  • Using Gilsonite is very cost effective as FLC additive.

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