Publications

The amount of available data over exploration areas is often very limited and variable in terms of data type and quality, and thus typically requires a unified multidisciplinary approach in order to maximize the value of the data. We discuss such an approach that integrates a suite of data, from seismic processing through to geology. This approach enables us to effectively de-risk a given prospect through porosity estimation. Data provided by the well, such as P-Sonic, check-shots and markers, are usually used to estimate the anisotropic seismic velocity field for Pre-Stack Depth Migration during seismic processing, and for seismic reservoir characterization. Limited well data and/or non-reliable information introduce significant uncertainties when building the seismic velocity model for depth imaging, and during the prediction of the actual rock properties. As such, these uncertainties are translated to the seismic reprocessing, negatively impacting its quality. Having a robust understanding of the geological context that the data represents, such as depositional environment, and facies distribution, significantly reduces uncertainties by helping the final output interpretation of the seismic reservoir characterization. Finally, the simulation of porosity and the volume of shale, consistent with the seismic, the well and the geology, provides a quantitative measurement of the uncertainties related to the estimation.