Ground Fluids General Reservoir – Aquifer Properties Permeability & Storage Pressure Measurement Gassy Rocks – Coals and Shales Gas Content Measurement Gas Content Without Coring Gas Content from Core Desorption Gas Content From Cuttings Gas Capture Core Barrel Gas Sorption Isotherms – Gas Storage Isotherms by Regassing Native Sorption Isotherms Diffusional Behaviour Diffusion from Cuttings Apparent Diffusion Coefficient from Core Stress & Permeability Changes – Stress Path Groundwater Infiltration & the Unsaturated Zone Unconfined Aquifers Confined Aquifers Drainage