Integrated Approach from Static Model to CO2 Plume Migration for Storage Assessment in Hazad, Cambay, India

The Gandhar field, located in the Jambusar-Broach block of the Cambay Basin in India, is a significant oil and gas reservoir. It is situated primarily in Gujarat and extends into the offshore region of the Arabian Sea. The stratigraphy of the Gandhar Field is characterized by a series of sedimentary rock formations that have been deposited over millions of years. Seismic and drilled well data indicate a thickness of about 8 km of Tertiary sediments resting over the Deccan Trap volcanics. The Carbon storage assessment study has been performed in the aforementioned area of interest.

Geologic assessments involve studying the subsurface geology to identify suitable storage formations and assess their capacity and integrity. The primary objective is to find geologic formations capable of securely trapping CO2 over extended periods. Key considerations include the presence of suitable reservoir rocks, such as deep saline aquifers or depleted oil and gas reservoirs, which have the capacity to store large volumes of CO2. These formations should possess sufficient porosity and permeability to allow for CO2 injection and migration while ensuring minimal leakage. Detailed geological characterization is carried out using well data, seismic surveys, core samples, and other geological and geophysical techniques.