Resumo

PAREDES-ANGELES, Jorge Humberto. General considerations for the development of the Peruvian atlas of CO₂ geological storage. Bol. geol. [online]. 2020, vol.42, n.3, pp.243-260.  Epub 31-Ago-2020. ISSN 0120-0283.  https://doi.org/10.18273/revbol.v42n3-2020011.

CO2 capture and sequestration or geological storage is the best alternative for reducing excess anthropogenic CO2 emissions into the environment, both for technical and economic considerations. The volumes of CO2 and the prolonged residence times in the geological deposits make it especially interesting. Although it has not been tested on a large scale, the different pilot projects carried out and those underway in various parts of the world have shown very encouraging results.

This work develops the most important principles to be taken into account when preparing a geological atlas for storage of CO2. The theoretical-practical foundations for the geological sequestration of CO2 are reviewed, the types and mechanisms of carbon dioxide sequestration in the different geological formations are also developed, then is reviewed the main criteria for the selection of sites and the indicators of suitability for the sequestration of carbon dioxide. It presents a system of classification of sites according to the geological knowledge of the selected formation, which is an adaptation of geological experience in oil and gas exploration. It tentatively proposes geographical areas to investigate and collect geological information based on existing potential storage sites and it also exposes a methodology for estimating the storage capacity for geological sequestration of carbon dioxide depending on the formations that could be found.

Palavras-chave : CO₂ sequestration; CO₂ geological stores; Geological formations for storage; Atlas of CO₂ storage in Peru.

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