Figure 5: Total Petroleum Hydrocarbon (TPH) removal and corresponding microbial growth (Δlog CFU/ml) observed for R. picketti BP20 (A) and A. piechaudii KN1(B) incubated in the presence of drilling fluids: Diesel based Fluid (DF), Diesel Invert Emulsion (DIE), Diesel Direct Emulsion (DDE), Low Aromatic Fluid (LAF), Low Aromatic Invert Emulsion (LAIE) and Low Aromatic Direct Emulsion (LADE).