To enable a consistent model chain from depth conversion to flow simulation, an integrated approach to reservoir modeling is required. The objective of our work has been to develop and demonstrate an integrated work flow, where the following models steps are involved; structural modeling, building of the geological and simulation grids, facies and petrophysical modeling, up-scaling, segmentation, well modeling, flow simulation, and seismic forward modeling. The basic idea is to have a model chain which is updateable, consistent, and repeatable. In our integrated model work flow, model updating and uncertainty modeling are treated as an integrated process. The essential concept is that the uncertainty is represented by an ensemble of realizations that are updateable. The modeling work flow is developed and demonstrated on a structural complex North Sea full field application. Especially, we have focused on the structural model building; i.e. how to make it fast and updateable, and how to include uncertainties.


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