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Due to increase in environmental legislation against the disposition of oil based mud and an increase in environmental awareness, there is need for drilling companies to come up with a superior drilling mud with little or no aromatic content, which is biodegradable and environmentally friendly which poses no health hazard to oilfield workers and the host community.

For this study, oil extracted from the non food plant seeds (jatropha and canola seeds) were used as the base fluid for drilling mud samples in laboratory, oil in water emulsion was made using oil-water ratio of 70 to 30. 200ml of oil; 350ml of water, 50g of bentonite and barite was finally added to build the density up to 10ppg. Three mud samples were formulated with three different based fluids which are diesel, jatropha and canola oil based mud samples. Different mud laboratory tests such as toxicity, filtration, pH, viscosity and density were …