Addressing the escalating climate change problem calls for urgent mitigation strategies to efficiently reduce greenhouse gas (GHG) emission. This study explores the dual benefits of carbon capturing and storage (CCS) and harnessing geothermal energy from water-saturated reservoirs in the Seloken field, Chad Basin, Northeastern Nigeria. We made a relative analysis with insights from Russia’s West Siberia, North Caucasus, Volga-Ural, and Kamchatka Basins to evaluate the potentials for GHG reduction. The evaluation of the Petrophysical analyses and reservoir characterization was done using well-log and temperature data from the Seloken field (Chad Basin). CO2 storage capacity, geothermal energy output, hydrogen storage potential, and seal integrity were analyzed to ascertain the effectiveness of the intercontinental basin reservoirs to GHG reduction. A good to excellent porosity (Ø = 22–31%), water-wet reservoirs (Sw = 96–100%), and shale volume (Vsh = 1.3–6.5 API) were obtained across three formations: Kerri-Kerri (B), Chad (C), and Gongila (A). The Kerri-Kerri Formation boast the best option for CCS with high porosity (31%), net thickness (270–500 m), however, its storage capacity is lower than West Siberian Basin due to its lower gross depositional thickness and thinner sealing units. We identified geothermal potential (1.2-2.0 MW/km2) in reservoirs with high bulk volume water (0.277-0.299). Microbial-induced calcite precipitation (MICP) was recommended to address problems associated with the sealing units. The Kadaru-1 well characterized by saline aquifers was identified as the best for hydrogen storage. Our findings highlighted the role which sedimentary basins could play in reduction of GHG through actionable insights to achieve Nigeria’s Nationally Determined Contribution (NDC’s) by adopting the Russian Federation best practices and to promote sustainability.