3D Visualisation of Modelling Results
Flow path (or ray tracing) migration modelling is performed on a specific depth surface at a specific point in time, most commonly corresponding to peak generation and expulsion. This surface could be either a supplied depth map or a paleo-depth surface representing a selected carrier bed extracted from the 3D model.
Hydrocarbons are introduced ("injected") into the carrier interval, the geometry of which should be representative of the migration pathway at the time of generation and expulsion. In addition to the top surface, it is possible to include the carrier bed thickness and porosity/permeability and top–seal pressure.
Flow path analysis provides information on drainage areas, migration routes, accumulations, spill points, column heights and volumetrics. Its main advantages are simplicity and short simulation times, thereby allowing detailed sensitivity analysis. Rapid flow path analysis based upon carrier bed geometries and properties may be used to determine drainage areas and reservoir volumetrics prior to full 3D migration modelling.