Abstract

The exploration and development planning of Basal sands of Panna formation in the Heera field has gained interest due to recent finds of hydrocarbons in these sands. Variation in their thickness and facies as well as in their multiplicity has constrained their proper 3D subsurface mapping in spite of high density of well data. An attempt has been made in this paper to present the integrated geological model of the Panna formation from 3D seismic data. The wavelet processed 3D seismic data has provided several improvements in structural as well as stratigraphic interpretation of Panna formation and its more precise relationship with other younger producing formations. This work brings out a better definition of structural style and Basal sand distribution pattern in the Heera field through reliable correlation of horizons and faults and an improved velocity model for depth conversion. The inferred dispersal geometry of basal sands derived from the analysis of 3D seismic attributes is in good agreement with the drilled well information and aid in the identification of additional areas for exploration, delineation and development of Basal sands in the Heera Field.