Petroleum Property Prediction
Industry wide applications during the last few years have shown clearly that 3-phase, n-component petroleum migration modelling methods in which phase and property calculations are made using flash calculations are an essential requirement for improved predictions of petroleum phases and properties such as API gravities and GORs. Simple phase/component models such as black-oil models cannot accurately handle the wide range of temperatures, pressures and component mixture ratios that can occur in real petroleum systems.
In order to accurately predict the relative volumes of gaseous and liquid phases ahead of drilling, infer migration pathways and predict daughter compositions, petroleum engineering principles must be applied to the whole source-carrier-reservoir system. Thus, the source rocks starting and evolving chemical composition, the yields and compositions of products generated and released, and the pressure and temperature conditions of the source-carrier-reservoir system during expulsion, migration and accumulation all have to be modelled. This is done using the PhaseKinetics approach. Post accumulation alteration processes at high and low temperatures must also be addressed in some circumstances.