Definition(s)
Synthetic Based Mud (SBM)
Synthetic based mud (SBM) means a drilling fluid in which the continuous phase is composed of one or more fluids produced by the reaction of specific purified chemical feedstock, rather than through physical separation processes such as fractionation, distillation and minor chemical reactions such as cracking and hydro processing, and which should have a total polycyclic aromatic hydrocarbon concentration of less than 10 mg/kg, be relatively nontoxic in marine environments and have the potential to biodegrade under aerobic conditions.
Source: Offshore Waste Treatment Guidelines, The Canada-Newfoundland and Labrador Offshore Petroleum Board, Canada-Nova Scotia Offshore Petroleum Board, and National Energy Board, Canada, December 15, 2010. Regulatory Guidance