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<p>In this study, we have assessed the potential for the Niger Delta Basin’s geological formations to serve as sites for carbon capture and storage (CCS). CCS has become a critical component in Nigeria’s strategy to achieve net-zero emissions by 2060. The geological formations, particularly the expansive saline aquifers and depleted reservoirs, offer considerable storage capacities. Preliminary estimates have shown that these aquifers can hold up to approximately 147 MMT of CO<sub>2</sub> at 1% efficiency, with scalable potential going as high as approximately 22 gigatons (Gt) at 15% efficiency. This solidifies the claim that they are viable enough for large-scale deployments. Saline aquifers in the Niger Delta basin are characterised by high porosity, permeability, and thick shale seals and are distributed across the region at depths that are conducive to holding and maintaining CO<sub>2</sub> in a supercritical state and minimising leakage risks. Even considering technical challenges like the limitations of unavailable geological data, insufficient monitoring, insufficient infrastructure, and risks including induced seismicity and leakage, the geological properties of the basin still provide a promising basis for their deployment in CCS attempts. Success in this endeavour will depend on in-depth site characterisation, improvements in monitoring technologies, and supportive governmental policy and frameworks. Nigeria’s geological assets and improved international collaboration will prove pivotal to unlocking the potential of CCS, thereby enabling the country to meet its climate commitments and sustainable development goals effectively.</p>

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Assessment of geological storage options for CO2 sequestration in Nigeria’s Niger Delta Basin

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月2日

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  • Michael Nelson Mba-Otike,
  • Oghenetega Efetobo,
  • Pascal Esenenjor,
  • Uchenna Elizabeth Umueni,
  • Ifeoma Azuka Okoro,
  • Francis Onyemaechi Chukwusa,
  • Nkechi Perpetual Komolafe

摘要

In this study, we have assessed the potential for the Niger Delta Basin’s geological formations to serve as sites for carbon capture and storage (CCS). CCS has become a critical component in Nigeria’s strategy to achieve net-zero emissions by 2060. The geological formations, particularly the expansive saline aquifers and depleted reservoirs, offer considerable storage capacities. Preliminary estimates have shown that these aquifers can hold up to approximately 147 MMT of CO2 at 1% efficiency, with scalable potential going as high as approximately 22 gigatons (Gt) at 15% efficiency. This solidifies the claim that they are viable enough for large-scale deployments. Saline aquifers in the Niger Delta basin are characterised by high porosity, permeability, and thick shale seals and are distributed across the region at depths that are conducive to holding and maintaining CO2 in a supercritical state and minimising leakage risks. Even considering technical challenges like the limitations of unavailable geological data, insufficient monitoring, insufficient infrastructure, and risks including induced seismicity and leakage, the geological properties of the basin still provide a promising basis for their deployment in CCS attempts. Success in this endeavour will depend on in-depth site characterisation, improvements in monitoring technologies, and supportive governmental policy and frameworks. Nigeria’s geological assets and improved international collaboration will prove pivotal to unlocking the potential of CCS, thereby enabling the country to meet its climate commitments and sustainable development goals effectively.