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Leila A. Abukova
Leila A. Abukova
Head of Laboratory, Ph.D., Dr.Sci.
Oil and Gas Research Institute
Head of Laboratory, Ph.D., Dr.Sci.
Oil and Gas Research Institute

Articles

Geotechnical Engineering and Engineering Geology
  • Date submitted
    2023-09-29
  • Date accepted
    2023-10-25
  • Online publication date
    2023-12-12
  • Date published
    2024-08-26

Laboratory studies of transformation of porosity and permeability and chemical composition of terrigenous reservoir rocks at exposure to hydrogen (using the example of the Bobrikovskii formations in the oil field in the northeast Volga-Ural oil and gas province)

Article preview

The article describes the methodology for laboratory studies of reservoir rock exposure to hydrogen. The stages of sample research and the instruments used in the experiments are considered. A comparative analysis of the results of studies on porosity and permeability of core samples was performed. It was shown that after exposure to hydrogen, the porosity decreased by 4.6 %, and the permeability by 7.9 %. The analysis of correlation dependencies demonstrated a typical change in the relationship of these characteristics: after the samples exposure to hydrogen the scatter of the values increased and the correlation coefficient decreased, which indicates a change in the structure of the void space. Based on the research results, it was concluded that the decrease in porosity and permeability of the core samples occurred due to their minor compaction under the action of effective stresses. The chemical analysis of the rock showed no major difference in the composition of the basic oxides before and after exposure to hydrogen, which points to the chemical resistance of the studied formation to hydrogen. The experimental results showed that the horizon under consideration can be a storage of the hydrogen-methane mixture.

How to cite: Popov S.N., Chernyshov S.E., Abukova L.A. Laboratory studies of transformation of porosity and permeability and chemical composition of terrigenous reservoir rocks at exposure to hydrogen (using the example of the Bobrikovskii formations in the oil field in the northeast Volga-Ural oil and gas province) // Journal of Mining Institute. 2024. Vol. 268. p. 646-655. EDN MFPSXV