Modelling a stratified and fractured geological environment

摘要

A geometric model of a stratified and fractured sedimentary environment is produced by means of interfaces having a common orientation representing the stacking of the strata and involves representing the fractures in the form of traces, each crossing at least one of the strata. Each trace is positioned and its extent delimited by random selection but complying with the fracture densities n(i) per unit length of each stratum as well as the proportions (s(i/i+1), s(i/i-1)) of traces crossing through the interfaces. The densities and proportions are determined by reference to the environment being modelled. The model obtained allows simulations of fluids flowing through the environment to be performed. This can be applied to the study of hydrocarbon displacements in subsurface deposits.