Case Studies

Pore Pressure Modelling in Data Limited Areas – A Case Study from a Deepwater Block, Offshore Rakhine Basin, Myanmar

Written by: A. Edwards, R. Courel, N. Bianchi, A. Duffy, C. Jorand, G. Moltifiori, L. Ryan, and S. O’Connor

In frontier basins such as the deepwater blocks offshore Myanmar, determining the subsurface pore pressures is inherently challenging. Typically, offset well data is rare or irrelevant and the primary dataset is limited to seismic interval velocities with some form of interpretation of the geological  depositional system. As a result, making any assessment of the pore pressure is problematic. One of the keys methods to unlock the potential of the deepwater blocks and to ensure successful exploration in the future is to adopt different approaches and include as much geological understanding as possible into the study to ensure consistency. The approach described here involves utilizing multiple techniques and data types to help model the pore pressures in the deepwater. Data include the use of seismic amplitudes, seismic interval velocities and 2D basin modelling. Using the integrated approach to model the pore pressures ensures consistency between the multiple disciplines and allows quantifying the uncertainties adequately.

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