Abstract

GARCIA-AREVALO, Diego Alejandro  and  VARGAS-JIMENEZ, Carlos Alberto. CO₂ storage potential assessment for the Lower Magdalena Valley Basin, Colombia. Bol. geol. [online]. 2025, vol.47, n.3, pp.77-96.  Epub Nov 10, 2025. ISSN 0120-0283.  https://doi.org/10.18273/revbol.v47n3-2025004.

Geological storage of carbon dioxide (CO2) is proposed as a solution to control the cycle of CO2 emissions from various sources and to store it in geological formations over the long term. In this study, a geological model of the Lower Magdalena Valley (LMV) Basin in Colombia was developed based on structural, stratigraphic, and sedimentological data. The analysis focused on the Ciénaga de Oro and Porquero formations, which were deposited between the Late Oligocene and Middle Miocene. The basin model was constructed using existing thermal and lithological data to simulate subsurface properties and assess the basin's potential for Cd storage. Simulations were conducted to estimate pore pressure, temperature, geothermal and pressure gradients, CO2 saturation, and migration pathways. CO2 injection was modeled over a 50-year period, with a subsequent 200-year forecast to assess its behavior and containment potential. The results indicate that the most favorable areas for CO2 storage are in the central and northwestern regions of the basin, where reservoir conditions are optimal for long-term containment.

Keywords : Site screening; CO₂ geological storage; Carbon injection; CCS; Basin modeling.

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