Source rock palynological model for exploration of fossil fuels in Krishna-Godavari basin

Exploration for hydrocarbon depends largely upon integration of surface and subsurface geological, geophysical and geochemical data. The vast majority of fossil hydrocarbons was formed by the alteration of sedimentary organic matter which originate from a variety of different source materials includ ing aquatic and terrestrial biotas. Better understanding of the petroleum s ystem (which includes source, migration and accumulation) in any basin is n ecessary for hydrocarbon exploration. Assessment of source rock is based up on parameters like organic matter types, richness of organic matter, matura tion and paleoenvironment. The various geochemical and source rock palynolo gical parameters are also considered synergistically to decipher source roc k potential sequences in Cretaceous and Pre-Cretaceous sediments of Krishna -Godavari Basin. Source rock palynological model is prepared for various formations viz., Pe nnar Shale, Krishna Formation, Golapalli Formation, Gajulapadu Shale, Ragha vapuram Shale and Tirupati Sandstone to depict spatial and temporal distrib ution of source rock facies.