Modeling

The goal of geological structure modeling is a simplified representation of the subsurface. The geological structure model is the basis for all further modeling (property, fracture, facies model).

Property modeling is the three-dimensional distribution of reservoir parameters in the structural model. Reservoir parameters are for example porosity, permeability, water saturation, or clay content. Input data for the creation of a property model are petrophysical evaluations of well logs, as well as seismic attributes. The petrophysical evaluations are upscaled into the model. Each cell block penetrated by boreholes gets one value per property.

This is followed by a geostatistical analysis of the upscaled values. Based on the geostatistical parameters, the reservoir properties are spatially distributed. Seismic attributes can be co-used in this process as an additional trend. A fracture model is a model of the spatial distribution of fracture surfaces, from which fracture parameters such as fracture porosity and fracture permeability can be determined.