0 H. Samimi N. Marcano 2009 Relationship Between Geochemical Proxy Parameters and Compositional Reservoir Simulation Parameters of Tar Sand Reservoirs <span style="font-family: Helvetica; font-size: small"><span style="font-family: Helvetica; font-size: small"> <p align="left"> • Viscosity gradient was added to model using Toil and Boil approach </p> <p align="left"> • Geochemical information can be tagged to each simulation oil, and a post processor developed to calculate geochemical composition of produced oil </p> <p align="left"> • This can be used as part of history match and with molecular marker reactions incorporated to integrate reaction proxies in to simulation </p> </span></span>