Abstract

GOMEZ-RUIZ, Jose David; VARGAS-JIMENEZ, Carlos Alberto  and  COMBITA-QUIGUA, Jorge Fabrício. Geological modelling for CO₂ storage potential estimation in an area located south of the Lower Magdalena Valley Basin, Colombia. Bol. geol. [online]. 2025, vol.47, n.1, pp.93-103.  Epub May 06, 2025. ISSN 0120-0283.  https://doi.org/10.18273/revbol.v47n1-2025004.

The results of geological modeling to assess the CO2 sequestration potential in the southern part of the Lower Magdalena Valley are presented. Using correlations, petrophysical analysis, evaluation of pressure and temperature gradients, seismic interpretation, and statistical calculations, a deterministic capacity of 7,58 MtCO2eq was estimated. In a stochastic approach, significant variability is revealed, indicating that the storage capacity could range from 0,82 MtCO2eq (P90) to 15,28 MtCO2eq (P10). The data support the Ciénaga de Oro Formation as a suitable reservoir for CO2 sequestration. However, detailed analysis of the structure, corresponding to an inversion anticline, and capacity estimates lead to the dismissal of the project's feasibility in the area. In summary, while the reservoir's suitability is confirmed, considerations suggest significant limitations for the implementation of CO2 sequestration in the studied area.

Keywords : CO₂ sequestration; LMV; Deep saline aquifer; Volume estimation; Uncertainty analysis.

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