Challenges of Saturation Height Modeling in a Low Resistivity, Complex Carbonate Porosity System: The Impact of Microporosity in the Uwainat Member, Bul Hanine Field, Offshore Qatar

In complex and heterogeneous carbonate reservoirs, computing an accurate log derived water saturation (SW) where more than<br>one pore type is present, poses a challenge for log analysts and geomodelers. Despite the application of a large number of log<br>based techniques, log derived SW in these situations fails to compensate for the effects of microporosity because it does not<br>accurately represent moveable hydrocarbon pore volume. Alternative techniques must be developed and implemented to reduce<br>the uncertainty in hydrocarbon estimation and for use in dynamic simulation.