Conditioning Static Models with Connectivity Information

Production History Match optimization and improvement of reservoir models prediction capability require a good consistency between geological static model and dynamic model.

This consistency can be obtained by constraining the static model, as much as possible, with information coming from the Basic Reservoir Engineering phase of a reservoir study. Such information is, for example: connectivity between perforations in different wells, average permeability around a well, etc…

This presentation is focused on the study of connectivity, which is a key contributor to flow dynamics in geomodels, but is rarely taken into consideration.

The first section is dedicated to the identification and characterization of connections between wells, in various contexts.

In the second section, several methods for constraining geological models to connections between wells are presented. The impact of the method chosen for populating the geological model with properties is studied first. Then simple workflows, sometimes specific to some geostatistical algorithms, are discussed. Finally, a general workflow is detailed, which is valid for all the geostatistical algorithms but is more demanding in terms of computation.