Oil based mud (OBM)

Oil based mud (OBM) means a drilling fluid in which the continuous phase is a product obtained from petroleum distillation (e.g., diesel oil or mineral oil).

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

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