Preliminary study on the CO2 injectivity and storage capacity of low-permeability saline aquifers at Chenjiacun site in the Ordos Basin

The injectivity and storage capacity at Chenjiacun are not much smaller than that at In Salah and Ketzin, owing to the relatively great thickness and long perforated interval at Chenjiacun. In order to improve the reservoir injectivity and storage capacity further at Chenjiacun for large-scale CO2 storage in the future, possible injection strategies and reservoir management options include introduction of stimulation measures and water-production wells at approximately 1000 m or even further away from the injection well, as well as using fully penetrating vertical wells with long perforated intervals.