The objectives of the proposal are to develop methods for obtaining realistic configurations of two immiscible fluids as a function of wettability and geologic characteristics and to use these fluid configurations as a basis for predicting and explaining macroscopic (core-scale) behavior, including the relationships among relative permeability, wettability, and laboratory and log measurements of nuclear magnetic resonance (NMR) and broadband dielectric response. The ultimate objective is to measure dielectric and NMR responses in a range of sedimentary rocks and to use state-of-the-art multi-scale modeling to interpret these measurements to quantify wettability and relative permeability at the core and log scales.