Abstract

Unravelling the heterogeneities and compartmentalization within a hydrocarbon reservoir and incorporation of these into the geo-cellular model is a vital factor for the development strategy of any field. The SD-20 sand belong to the Upper Cretaceous Nannilam formation and is a major oil and gas producer of the field in the study in Cauvery Basin. The existing model for this reservoir envisages it as a single sand body. However, this model fails to explain the variations within the fluid distribution, pressure and production behaviors and abrupt facies changes in the wells.