Perm National Research Polytechnic University, Perm, Russia

Poplygin V. V., Dean, Associate Professor, Candidate of Engineering Sciences, poplygin@bk.ru
Galkin S. V., Dean, Professor, Doctor of Geological and Mineralogical Sciences
Savitckii I. V., Assistant

PermNIPIneft Branch of LUKOIL-Engineering LLC, Perm, Russia
Potekhin D. V., Engineer

Hydraulic fracturing is one of the ways to increase well production rates. To assess the possibility of successful hydraulic fracturing in rocks, it is necessary to assess the conditions for the formation and development of fractures. The article considers samples of Kashiro-Vereya carbonate deposits in one of the fields in the Perm Region. The samples initially had a different nature of the void space: with the cavernousness, porous, as well as dense rocks. the samples were subject to triaxial loading experiments. As a result, it was found that in permeable samples, with systems of pores and cavities, no cracks form in compression at 20 MPa. In dense samples under pressure more than 10 MPa, intensive development of fractures takes place, and fluid flow is possible in such fractures. The performed studies of rocks allow concluding on the possibility of creating fracture systems for oil production in the Vereya carbonate deposits. The created fractures enable intensive flow of fluids. This will additionally connect large areas of oil-bearing rocks to the production well. Hydraulic fractures enjoy wider spread in denser samples, while permeable samples experience no change in the structure.

The research was supported by the Ministry of Science and the Higher Education of the Russian Federation, Project No. FSNM-2023-0005.

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