ABSTRACT
Stochastic modeling in reservoir description should be classified with respect to the type of variables involved in the study: continuous, mosaic or event spatial variables. The calcite cemented units in a sand stone reservoir is considered as a mosaic variable, and the stochastic model is based on Markov random field theory. The model and parameter values, constrained by the well observations, provide the base for generating several realizations of the reservoir description. These realizations are homogenized and the production potential is evaluated by a preliminary numerical production simulation. The set of production profiles corresponding to the reservoir realizations will reflect the uncertainty due to lack of exact geological knowledge about the reservoir. The importance of establishing an automatic line of production for uncertainty evaluation is emphasized.
