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IMPROVED PORE PRESSURE PREDICTION BASED ON AN INTEGRATED SEISMIC AND BASIN MODELING APPROACH
IMPROVED PORE PRESSURE PREDICTION BASED ON AN INTEGRATED SEISMIC AND BASIN MODELING APPROACH
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机译:基于地震和盆地模拟综合方法的孔隙压力预测改进
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摘要
One embodiment of generating a pore pressure prediction through integration of seismic data and basin modeling includes crossplotting seismically derived velocities and effective stress at spatial coordinates; defining seismic transform functions and an uncertainty range from the crossplotting; transforming the seismically derived velocities into calculated effective stress using selected seismic transform functions and calculating pore pressure using an equation transforming the calculated effective stress into calculated pore pressure: identifying a subset of the selected seismic transform functions, where die subset is identified m response to the calculated pore pressure being adequate based on a comparison; using an inverse of the subset to convert the effective stress from the basin model into basin model derived velocities; building a hybrid velocity model by selecting velocities from the basin model derived velocities or from the seismically derived velocities in each region; and generating a digital seismic image using the hybrid velocity model.
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