Figure 1. Signatures of oil and OBM filtrate in Diffusion-Relaxation maps for 1) an oil that is more viscous than OBMF – the oil has shorter T2 and lower D than OBMF (left), 2) an oil that is as viscous as OBMF – both have the same T2 and D (center), and 3) an oil that is less viscous than OBMF – the oil has longer T2 and higher D than OBMF (right).