Expanded Application of NMR Well-Logs for Poresize Distribution and Permeability in Low-Permeability Argillites and Carbonates

G005 EXPANDED APPLICATION OF NMR WELL- LOGS FOR PORESIZE DISTRIBUTION AND PERMEABILITY IN LOW-PERMEABILITY ARGILLITES AND CARBONATES Background 1 Nuclear Magnetic Resonance well logs (NMR) have become standard measurements for petrophysical evaluations in the oil industry. In addition to determining porosity and its bound and free-water components NMR logs have been applied to distinguish pore fluids such as gas condensate and high or low viscosity oils. The influences of hydrocarbon types may dominate the behaviors of the T2 relaxation times and unfortunately may interfere with the ability to obtain pore size distributions and bound fluid contents. Radioactive waste disposal research