A seminar by doctoral student Sarvar Mammadov was held on May 25, 2026, on the topic "Effect of Stress on the Permeability of Oolitic Limestones Extracted from the Rhine Graben," organized by the Graduate School of Science, Art and Technology and the Department of Petroleum Engineering at Khazar University.

The presenter is pursuing doctoral studies in "Earth, Environmental and Geophysical Sciences" at the University of Strasbourg, France, under a trilateral agreement with the Ministry of Science and Education of the Republic of Azerbaijan and Khazar University, within the framework of the "State Program on Increasing the International Competitiveness of the Higher Education System in the Republic of Azerbaijan for 2019–2023."

During the seminar, students were introduced to the fundamental principles of rock mechanics for the characterization of geothermal reservoirs. The presentation discussed the effects of porosity, cementation, and effective pressure on the mechanical behavior of rocks and fluid flow properties in limestones of the Upper Rhine Graben — one of the regions of France of major significance in terms of geothermal energy. New results of deformation experiments conducted on oolitic limestones under high-pressure conditions were presented, demonstrating the evolution of permeability under different deformation regimes. The doctoral student also provided detailed insights into the relationships between rock microstructure, deformation processes, and reservoir productivity.