Flow modeling workflow: II. Brown fields

Brown fields are fields with significant development history. They may be modeled using deterministic or probabilistic reservoir forecasting workflows. History matching is used to calibrate the reservoir flow model in the deterministic workflow, and to limit the number of acceptable models in the probabilistic workflow. Our task is to find the set of reservoir parameters that minimizes the difference between model performance and historical performance of the field. Two workflows for modeling brown fields are discussed here: deterministic reservoir forecasting, and probabilistic reservoir forecasting. A workflow for green fields is presented in the companion paper (Fanchi, 2011-this issue).