<p>Geological storage of carbon dioxide (CO₂) in formations, evaluated from geological, thermodynamic, ecological, and economic criteria, is a promising solution to combat climate change effectively. In this study, we investigated the Sui Main Limestone (SML) Formation in Qadirpur Gas Field as a potential CO₂ storage site. Our investigation included petrophysical analysis, lithofacies prediction, horizon demarcation, and reservoir characterization via machine learning approaches. We further estimated the impedance and effective porosity (PHIE) volumes of the observed reservoir, conducted thermodynamic analysis as feasibility check for CO₂ storage, and validated the caprock integrity for secure CO₂ containment. The study reveals the possibility of secure CO₂ storage within a 30&#xa0;m reservoir zone, in the SML Formation, with an average total porosity of 0.21 v/v, PHIE of 0.19 v/v, and hydrocarbon saturation of 0.82 v/v. The lithofacies classification indicates that the reservoir is a hydrocarbon-bearing limestone, further supporting its suitability for CO₂ storage. Furthermore, lithology, permeability, and PHIE values of the caprock confirm its suitability for withholding CO₂ from seepage. Seismic interpretation confirms tectonic stability, whereas low impedance and high PHIE values throughout the reservoir highlight its potential for carbon sequestration. Thermodynamic conditions in the SML Formation support the supercritical state of the CO₂, while the declining production history of the field necessitates enhanced oil recovery and subsequent long-term CO₂ storage. This research therefore offers valuable insights into the potential contribution of SML Formation which can be used by both the industry and the policy makers for sustainable energy practices and climate mitigation efforts.</p>