A016 PRODUCTION ASSESSMENT OF RESERVOIR MODELS CONSTRUCTED WITH THE USE OF 3D SEISMIC DATA

This paper describes a study undertaken to appraise spatially complex hydrocarbon reservoir models constructed with the use of 3D post-stack seismic data and well logs. Developments are centered about the interpretation of data acquired in an active gas field in the deepwater Gulf of Mexico. The availability of time records of fluid production provides an independent way to quantify the accuracy and reliability of several methods commonly employed to construct reservoir models. We make use of geostatistical inversion to construct spatial distributions of porosity and permeability that honor well logs and 3D post-stack seismic data in the inter-well region. The constructed reservoir models are compared against models constructed with standard geostatistical procedures that do not make use of seismic data. Multi-phase fluid-flow simulation is performed to assess the consistency of the constructed reservoir models against the existing time record of flow rates of gas/water and shut-in well pressures. For the field study under consideration, it is found that geostatistical inversion consistently yields the closest match to dynamic measurements of reservoir pressure and fluid production.