Abstract: Modeling Gas-Oil Ratio and Petroleum Fluid Composition in Sedimentary Basins

Wendebourg, J. - IFP; Rudkiewicz, J.-L.; S. J.; Vear, A.; Penteado, H.; Vandenbroucke, M. - BP

Computer modeling of compositional hydrocarbon generation and migration can help to explain gas-oil ratios observed in reservoirs based on the evolution of petroleum fluids as they undergo changes in phase and mobility due to cracking, mixing, or transport in different carrier systems. This paper explains the implementation and applications of IFP's compositional Temispack program including primary and secondary cracking in source rocks based on open and closed system pyrolysis, expulsion based on selective retention in the kerogen, migration by miscible three-phase flow based on reservoir correlations or equations of state, and flow properties based on fluid pressure, temperature, and composition. Examples will be presented from the North Sea and the Brazilian Atlantic margin.

AAPG Search and Discovery Article #90933©1998 ABGP/AAPG International Conference and Exhibition, Rio de Janeiro, Brazil