DSMs can be analysed, either for stratigraphic or sedimentological horizon mapping, or for 3-D geobody description. The resulting three dimensional data can be used to construct realistic 3-D reservoir models. These deterministic models can be analysed for sandbody architecture (e.g. channel sinuosity), connectivity between geobodies or act as a reference for modellers to validate their model simulations. Figure 8 shows a fluid flow simulation through a reservoir model of a heterogeneous, turbidite sand-sheet system. The model is based on an outcrop analogue in the French Alpine region, and it was built with Roxar’s IRAP RMS software. Animations allow a much better understanding of flow paths and the identification of problem areas, for example zones of by-passed hydrocarbons.
Figure 8. Simulated fluid flow by injector/producer well pairs
Figure 9 shows the workflow overview, summarising the steps undertaken to reach the flow simulation stage. Several software applications and hardware platforms are used. Deterministic reservoir models derived from 3-D outcrop analogues, realise a quantum leap in field geological acquisition.