The secondary migration modelling tool SEMI is our central basin modelling application. It uses a ray-tracing scheme and parallel computing techniques to model petroleum migration within stacked carrier rock sequences at high resolution. It also handles the processes that cause hydrocarbons to migrate out of traps and  provides advanced methods for predicting and accounting for fault seal capacities in migration modelling.

SEMI includes routines for the vertical decompaction of depth maps, for the calculation of kerogen transformation ratios and vitrinite reflectance values from the geothermal history. Monte Carlo simulation methods are incorporated, making the program well suited for sensitivity studies and for assessing key risk factors.

Standard input to SEMI includes depth map grids and fault trace files. In addition, SEMI can utilise palaeobathymetric data, organic facies maps,  bulk and multicomponent kinetic models for hydrocarbon generation, expulsion information and sediment facies properties of the carrier rock(s).

For more information go to SEMI.