Modified Stochastic Inversion (MSI) in a Deepwater Clastic Reservoir

Summary We present a modification to the classic Stochastic Inversion (MSI) approach which is an innovative solution to the time-consuming stochastic inversion workflow (both acoustic and elastic), while still providing multiple realizations that match the seismic data and provides an output that contains information that is normally considered sub-seismic. This technique includes a powerful spectral merging tool that enables the geoscientist to analyze the different components and optimally merge the data to provide geologically consistent results. The spectral merging tool also enables a flexible approach, with the ability to bring in data from other workflows for possible scenario modeling. The relative increase in speed compared to a more transitional approach for stochastic inversion (elastic) enables the geoscientist to test different scenarios in a more efficient manner, that can then be used further in the modeling workflow, for example as input to a geomodel (static model) that will then bs used as input to the dynamic simulator.