Abstract Compression-based modelling is the name given to a procedure applied during geological facies modelling which allows the connectivity and stacking characteristics of the facies to be defined as input parameters rather than to be unconstrained outputs of the modelling process. Models built using the method are characterised by realistic spatial arrangements of facies including thin but laterally continuous fine-grained units and poorly amalgamated lobate or channelised elements. This paper defines a general framework for the approach, illustrated and validated using one- and two-dimensional models built using research code. A set of equations defining the framework for building a compression-based model based on user-defined geological parameters for hierarchical systems is described. These parameters are dimensions (widths, thicknesses), proportions and, unique to this method, compression factors which define the propensity for amalgamation for each type of element in the hierarchy. The framework is applied to model a generic deep-marine depositional system defined by an 11-element hierarchy with parameters representative of values reported in published studies. Three-dimensional models honouring well data and built using the method in industrial software reproduce the characteristics defined at input and demonstrate the applicability of the method in practical modelling studies.
Manzocchi et al. (Fri,) studied this question.
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