This technical session explores the intricate interplay between rock and fluid properties and their profound impact on reservoir behavior. Presentations will cover advancements in capillary pressure measurements for supercritical fluids, shedding light on critical thresholds for reservoir optimization. Discussions on fluid property heterogeneity and its effects on reservoir performance will provide key insights for enhanced modeling and management. Additional topics include three-phase equilibrium of hydrocarbon mixtures, utilizing rate transient analysis to boost CO2 utilization and storage, and innovative methods for constraining porosity and permeability estimations from MICP data. Participants will also delve into developing sophisticated equations of state models, assessing saturation-dependent relative permeability, and employing CO2-brine scaling models to improve accuracy. Further insights into oil-water relative permeability in low-permeability reservoirs highlight strategies for optimizing fluid dynamics. This session serves as a comprehensive platform for technical professionals seeking to advance reservoir performance through cutting-edge research and methodologies.