Representing fractures in reservoir models

摘要

A method of representing and using fractures in a model of a subterranean reservoir is described including the partitioning of a statistical description of the full fracture network, obtained from direct measurements, into a discretely modeled part and a remaining statistically described part. The partitioning may involve establishing criteria for identifying fractures with the greatest effect on reservoir permeability. Petrophysical parameters may be drawn from each side of the partition and combined. The method may comprise the determination of the correlation effects caused by fractures with dimensions exceeding dimension of the local grid cells and/or the determination of petrophysical properties while allowing for arbitrary distribution of fracture orientations. All three aspects may be combinable to improve the modeling of fractures and the simulation of fractured reservoirs.