Evaluation of capacity and suitability of CO2 geological storage in carbonate formations in basins of China mainland

Geological storage of carbon dioxide is one of the effective techniques to reduce CO2 emissions. Evaluation of capacity and suitability of such storage can provide a scientific foundation for policies of reducing greenhouse gas emissions. This work collects and analyzes the relevant data from the studies of petroleum geologyand engineering and hydrogeology. The porosity and thickness of carbonate formations in the basins of China mainland are investigated. A series of important geological maps related to CO2 storage in carbonate formations in these basins are prepared, including the “Classification map of areas of carbonate formations in the basins of China”, “Classification map of thicknesses of carbonate formations in the basins of China”, “Classification map of porosities of carbonate formations in the basins of China”, “Classification map of CO2 storage capacity of carbonate formations in the basins of China”, “Classification map of suitability of CO2 storage in carbonate formations in the basins of China”. After suitability evaluation and removal of those basins not suitable for CO2 storage, the basins with high suitability for CO2 storage are chosen for further investigation.