OPK-3 Mud Gas Analysis Fig. 1 Comparison of d15N nitrogen vs. d13C methane measured on a RFT Gas sample from OPK-3A vs. samples within NAM's concession area.

OPK-3 Mud Gas Analysis Fig. 2 Comparison of the carbon isotopic composition of a RFT Gas sample vs. Isotube Mud Gas samples from well OPK 3A and selected samples from surrounding fields as well as results from pyrolysis experiments of Westphalian coals (VAL-1).

OPK-3 Mud Gas Analysis Fig. 3 Comparison of dD methane vs. d13C methane measured on a RFT Gas sample from OPK-3A ( after Schoell 1983).

OPK-3 Mud Gas Analysis Fig. 4 Comparison of d13C methane and ethane isotope ratios measured on a RFT Gas sample from well OPK-3A vs. mud gas samples from well OPK-3A and pyrolysis results from selected source rocks.

OPK-3 Mud Gas Analysis Fig. 5 Comparison of d13C ethane and propane isotope ratios measured on a RFT Gas sample from well OPK-3A vs. mud gas samples from well OPK-3A and pyrolysis results from selected source rocks.

OPK-3 RFT Gas Analysis (Maturity Map Base Wph D) Drainage Area @ Present Day 1D Location Base Wph D Fig. 6 Maturity distribution of the Base Westphalian D expressed as vitrinite reflectance (Vr %). Note that the drainage area for OPK includes no faults.

OPK-3 RFT Gas Analysis (1D depth Plot) 0.94 Top Wph D 0.97 Top Wph C 1.14 Top Wph B 1.55 Top Wph A 3.04 Top Namur Fig. 7 Depth profile of Vitrinite Reflectance illustrating the maturity ranges of the major source rock units at Location 1 within the drainage area of OPK.

OPK-3 RFT Gas Analysis (1D Time Plots) Base Wph D HC Gas Expl. Rate (kg/m2/Ma) VR (%Ro) Temperature (°C) Base Wph B Note: 0.13 kg/m2/Ma hydrocarbon gas has been expelled during the last time step HC Gas Expl. Rate (kg/m2/Ma) VR (%Ro) Temperature (°C) Vitrinite Reflectance vs. Time HC Gas Expulsion Rate vs. Time Temperature vs. Time Fig. 8 History curves of Hydrocarbon Gas Expulsion Rate (kg/m2/Ma), Vitrinite Reflectance (VR %Ro) and Temperature (°C) at Base Westphalian D & B level for Location 1.