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Improving 3D Velocity Models for Geopressure Prediction

June 19, 2018
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Presented by:  María de Los Ángeles González
Featured Domain: Interpretation and Modeling
Featured TechnologyExplorer™, SKUA-GOCAD



Estimating pressure in the subsurface is a critical step in well planning and geomechanics, for security and productivity reasons. It requires knowledge in both geophysics and geology before well planning. Therefore, geopressure volumes should consider not only rock properties derived from lab or well measurements, but also major structural and stratigraphic features such as faults, salt intrusions, thin beds and complex stratigraphy. In this regard, information from seismic velocities can be used to obtain density and other volumetric properties used in overburden and pore pressure computation.

This presentation describes tools for obtaining suitable interval seismic velocities, modeled in a structural and stratigraphic framework that accounts for the geological complexity. This is followed by calibration with well logs in a proper geostatistical domain, ensuring a 3D model that represents all the geological insight into the field.


Maria_Gonzalez_sm.jpgMaría de Los Ángeles González has been working at Paradigm since 2007, in the areas of iseismic velocity modeling and  reservoir characterization.  She holds a B.Sc. in Geophysical Engineering from Universidad Simón Bolívar in Venezuela (2002) and a M.Sc. in Geophysics from Universidad Central de Venezuela (2007).