Evaluation of the CO2 Storage Capacity in Sandstone Formations from the Southeast Mesohellenic trough (Greece)

Research output: Contribution to journalArticleResearchpeer-review


  • Marina A. Christopoulou
  • Petros Koutsovitis
  • Chrysothemis Paraskevopoulou
  • Alkiviades Sideridis
  • Petros Petrounias
  • Aikaterini Rogkala
  • Nikolaos Koukouzas

External Organisational units

  • University of Patras
  • University of Leeds, School of Earth and Environment
  • Centre for Research and Technology Hellas


This study investigates the capability of the Southeast Mesohellenic Trough (SE MHT) sandstone formations to serve as a potential reservoir for CO2 storage in response to the emerging climate change issues by promoting environmentally friendly mineral sequestration applications. Sandstone samples, for the first time, were evaluated for their petrographic characteristics, mineral chemistry, geochemical properties, as well as their petrophysical and gas adsorption properties through tests. The sandstones were tested and classified into distinct groups. The most promising site to be considered for pilot CO2 storage testing is the Pentalofos Formation locality since its sandstones display specific mineral phases with the proper modal composition to conceivably react with injected CO2, leading to the development of newly formed and stable secondary mineral phases. The gas adsorption results are also more encouraging for sandstones from this sedimentary formation. All the measured UCS (uniaxial compressive strength), Ei (bending stiffness), and ν (Poisson’s ratio) results are above those dictated by international standards to perform CO2 storage practices safely. Furthermore, the specified targeted locality from the Pentalofos Formation holds the geological advantage of being overlaid by an impermeable cap-rock formation, making it suitable for deploying CO2 mineralization practices. The demarcated area could permanently store a calculated amount of ~50 × 105 tons of CO2 within the geological reservoir by reacting with the specified mineral phases, as specified through the proposed petrographic PrP index (potential reactive phases).


Original languageEnglish
Article number3491
Number of pages25
JournalEnergies : open-access journal of related scientific research, technology development and studies in policy and management
Issue number10
Publication statusPublished - 10 May 2022