Istituto di Geoscienze e Georisorse     
Rodrigo-Naharro J., Nisi B., Vaselli O., Lelli M., Saldaña R., Clemente-Jul C., Pérez Del Villar L. Diffuse soil CO2 flux to assess the reliability of CO2 storage in the Mazarrón-Gañuelas Tertiary Basin (Spain). In: Fuel, vol. 114 pp. 162 - 171. Elsevier, 2013.
In the framework of a global investigation of the Spanish natural analogues of CO2 storage and leakage, four selected sites from the Mazarrón-Gañuelas Tertiary Basin (Murcia, Spain) were studied for computing the diffuse soil CO2 flux, by using the accumulation chamber method. The Basin is characterized by the presence of a deep, saline, thermal (∼47 °C) CO2-rich aquifer intersected by two deep geothermal exploration wells named "El Saladillo" (535 m) and "El Reventón" (710 m). The CO2 flux data were processed by means of a graphical-statistical method, kriging estimation and sequential Gaussian simulation algorithms. The results have allowed concluding that the Tertiary marly cap-rock of this CO2-rich aquifer acts as a very effective sealing, preventing any CO2 leak from this natural CO2 storage site, being therefore an excellent scenario to guarantee, by analogy, the safety of a CO2 storage.
URL: http://www.journals.elsevier.com/fuel/
Subject diffuse CO2 flux
accumulation chamber
CO2 geological storage
Mazarrón-Gañuelas Tertiary Basin (Spain)

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