As part of its Department of Energy (DOE)/Industry cooperative program in oil and gas, Berkeley Lab has an ongoing effort in cooperation with Conoco and Amoco to develop equipment, field techniques, and interpretational methods to further the practice of characterizing naturally fractured, heterogeneous reservoirs. The focus of the project is an interdisciplinary approach, involving geology, rock physics, geophysics, and reservoir engineering. The goal is to combine the various methods into a unified approach for predicting fluid migration.