Abstract

The Lower Barmer Hill (LBH) Formation of Eocene age is the major regional source rock in Barmer Basin of Rajasthan. It is considered to be a potential shale play due to its higher thickness, better organic richness and optimum thermal maturity. In our earlier work, an attempt was made to estimate the storage capacity of this play which resulted into 6-13 MMBOE/Km2. In the current work, we have attempted to change some of the important input parameters based on alternate understanding and evaluate the sensitivity of the storage model of LBH. The input parameters like source rock thickness, original total organic content (TOCo), and depositional hydrogen index (HIo) maps are updated and finally, the storage model for LBH is reestimated. Out of the three updated input parameters, source rock thickness came up as the most sensitive parameter and raised the storage capacity of LBH within the kitchen areas by ~97%. This study has guided us to further work on thickness assumptions and acquire some more geochemical data in the specific part of the basin.