A risk-based integrated production model (RIPM) was used to guide development of an offshore volatile-oil field and a retrograde-condensate-gas field. Strategic decisions regarding facility alternatives I and well completion, design were analyzed in light of uncertain ties in reservoir size and performance by use of a systems approach. Key parameters and business drivers were identified to focus the technical work on important development decisions. The RIPM enabled making decisions and evaluating a large number of options under a "fast-track" man date. in which relatively little data existed. T he RIPM analysis was facilitated with predictions from technical tools for reservoir performance and completion design. Field results to date have validated this decision-making approach.