Reservoir Solutions Modules 1.0 gives reservoir engineers the capabilities to solve common problems requiring the calculation of oil and fluid properties, such as pseudocritical properties, compressibilities and formation-volume factors. Included in the program are functions for calculating Tc (pseudocritical temperature), Pc (pseudocritical pressure), Z factor (real gas deviation), shut-in bottomhole pressure, Cg (gas isothermal compressibility), Cw (water isothermal compressibility), Co (oil isothermal compressibility), Bo (oil formation volume factor) and Bg (gas formation volume factor).