F-05 INTERPRETATION TOOLS AND METHODS FOR CHALK RESERVOIR CHARACTERIZATION Summary 1 Seismic impedance inversion is recognized as a powerful technique for detailed reservoir characterization of chalk fields. It helps not only for porosity mapping (because of an excellent correlation between impedance and porosity) but also for detailed reservoir layering. Once inverted seismic amplitude data can lead to a new interpretation of the relationships between layers especially in the case of porosity variations due to diagenesis. Looking at the conformity of seismic porosity with reservoir structure is also a key principle for chalk fields. It helps to delineate the downflank potential


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