Abstract

Hydrocarbon exploration in structurally complex terrains poses significant challenges due to subsurface uncertainties, stratigraphic variations, and fault compartmentalization. The Tipam Formation, a key petroleum system unit in northeastern India, presents such complexities that demand an integrated and systematic approach to minimize exploration risk. This study adopts a synergistic methodology that combines Common Risk Segment (CRS) mapping with detailed depositional modeling to enhance Geological predictability and exploration success. This plays a central role in delineating zones of varying exploration risk by integrating multiple Geological and geophysical parameters, including structural configuration, reservoir quality, source rock maturity, and trap integrity. By categorizing exploration blocks into low-, medium-, and high-risk segments, this enables informed decision-making and resource prioritization. When coupled with depositional modeling, this approach provides a robust framework to visualize the spatial distribution of prospective reservoirs, identify subtle traps, and reduce uncertainty in target selection. It significantly improves risk assessment and exploration planning, paving the way for a lowrisk, high-success strategy in unlocking the hydrocarbon potential. This study demonstrates that CRS mapping is not merely a risk visualization tool but a strategic enabler in frontier and mature basin exploration.