The objective of this project is to develop the techniques and interpretation methods to determine the maximum information about fluid and rock properties and interactions from in-situ measurements by nuclear magnetic resonance (NMR) well logging and fluid sampling and from special core analysis of formation material. The approach to this objective is from two directions: 1) development of NMR techniques and interpretations for in-situ measurement of these properties by NMR well logging and 2) quantification of pore structure and wettability at the microscopic level to develop forward models for interpretation of multiphase fluid flow and NMR response.