Subseismic Faults in Reservoir Description and Simulation

Abstract

Abstract A program system based on a stochastic model of the fault pattern and properties has been implemented. The faults are modelled as fault planes and displacement of adjacent rock. Realizations of the fault characteristics in a reservoir can be generated. The generated set of faults is applied to a reservoir description (permeability field). The fault planes may act like barriers to fluid flow. The displacment of rock can disconnect a high permeable zone and thereby reduce the overall flow properties. On the other hand, it can also connect high-permeable rock and improve flow. Although the reservoir geometry and properties are changed by the faults, well observations may still be honoured by taking faults into account when creating the description.