Accessible to anyone with an engineering background, this text reveals the importance of understanding rock and fluid properties in petroleum engineering. Along with new practice problems and detailed solved examples, this edition covers Stone II three-phase relative permeability model, unconventional oil and gas resources, low salinity water injection, saturated reservoirs and production trends of five reservoir fluids, impact of mud filtrate invasion and heavy organics on samples, and flow assurance problems due to solid components of petroleum. It also offers better plots for determining oil and water Corey exponents from relative permeability data.