Case Study TOC Estimation Methodology in Accessing Shale Potential in India's Cambay Basin

摘要

Sprawling across the western part of India, the Cambay basin is one of the most petroliferous basins in India. After the discovery of oil in the landmark well Lunej-1, the basin has consistently added to the hydrocarbon supply of the country. Approximately 5700 wells have been drilled by various operators in this basin with extremely high success ratio. GSPCL which has a Production Sharing Contract with the Government of India has kept Shale Gas as one of the targets while drilling these wells. After analysis of the systematic increase in the gas content, it was observed that C1 to C5 content became high as entry was made into the zones with higher TOC in Olpad and Cambay formation. This led GSPL to conclude that Cambay Shale has the potential to become an attractive target for tapping hydrocarbons.