Field Planning Using Integrated Surface/Subsurface Modeling

摘要

Integrated surface/subsurface modeling has been shown tornhave a critical impact on field development. Integratedrnmodeling aims to capture the interaction between the surfacernfacilities, the production/injection system, and the reservoir(s).rnAmong other issues, an integrated surface/subsurfacernmodel addresses the following:rn· Pressure interaction between a reservoir and a surfacernfacility network model.rn· Pressure interaction between different reservoirs in therncase of multiple reservoirs sharing a surface facility.rn· Improved calculation of pressure and temperaturerngradients in the wellbore.rn· Influence of facility constraints and equipment on a setrnof reservoirs sharing a surface facility.rn· Mixing of fluids from reservoirs with different fluidrndescriptions sharing a common production network.rn· Applying global production and injection constraintsrnto the coupled system (including the transfer ofrnreinjection fluids between reservoirs).rnIn this paper, a set of examples is presented illustrating thernuse of the above surface/subsurface modeling capabilities andrntheir impact on field planning. The study mainly focuses onrnthe following issues:rn· Multiple reservoirs coupling in a compositional moderninvolving black oil delumping. Reservoiretworkrncoupling takes place at both the well bottomhole andrntubinghead.rn· Integrated surface/subsurface system response tornvarious network choke-setting scenarios.rn· Field events scheduling in response to the behavior ofrnthe integrated surface/subsurface system.rnThe results presented in this paper complement thosernpresented in a previous study.1