Abstract
We present a seismically-consistent methodology predicting reservoir quality (porosity and thickness) and gas reserves in deep-water clastic reservoirs in the first appraisal stages of a deep-water Nile Delta amplitude-supported gas play, where reservoir display a wide range of thickness, often below the vertical seismic resolution. Accurate evaluations of seismically thin reservoirs must take into consideration tuning and resolution issues, as failure to explicitly address those problems in the study area can lead to prediction errors of OGIP in excess of 30%. Our approach is based on a reference petro-elastic model and subsequent seismic calibration through forward modelling or acoustic inversion, depending upon the physical scale and inner architectural complexity of the gas-bearing objects.
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