Initial Water Saturation Calculation through Integrated Methods for 3D Unconventional Reservoir Modeling

Abstract

Characterizing hydrocarbon distribution is one of the most critical and challenging steps, because the initial hydrocarbon saturation determines the original hydrocarbons in place and also subsequent reservoir numerical simulation during the field development stage including history match, production forecast, sensitivity analysis, etc. Accurate hydrocarbon distribution knowledge is vital for optimum reservoir characterization, hydrocarbon exploration and production.For an unconventional reservoir, the distribution of hydrocarbon and water is abnormal and complex compared with a conventional reservoir. The characterization and representation of the reservoir requires a multi-discipline team incorporating geology, geophysics, petrophysics, core analysis, reservoir engineering, etc. to enhance the understanding of reservoir heterogeneity and the target area selected for new development wells during the development phase.