Epigenetic processes in the formation of terrigenous reservoirs of Chona group deposits
https://doi.org/10.51890/2587-7399-2023-8-4-44-51
Abstract
Introduction. Secondary changes in Vendian clastic rocks significantly affect their reservoir properties and are one of the factors complicating the oil and gas forecast of terrigenous reservoirs in the fields of the Chona group.
Aim. Qualitative and quantitative assessment of secondary transformations in rocks and their correlation with petrophysical parameters.
Materials and methods. The objects of study — Vendian clastic rocks, studied by a complex of lithological methods: petrographic, X-ray diffraction, granulometric.
Results. Interpretation of analytical data from core studies of terrigenous reservoir rocks of the B13 formation made it possible to identify the sequence of staged secondary processes in Vendian clastic reservoir rocks and evaluate their role in the formation of reservoir properties (RP). The role of primary (sedimentation) and secondary (epigenetic) factors in the formation of RP is assessed. The cyclical nature of secondary processes, translating sedimentary cyclothems, is noted.
Conclusion. The correlation of primary and secondary material-structural features of rocks with capacitive space indicates a complex genetic relationship of all lithogenesis processes in the formation of Vendian terrigenous reservoirs.
About the Authors
M. A. Tugarova
Gazpromneft-NSU Research Center
Russian Federation
Russian Federation
Marina A. Tugarova — Dr. Sci. (Geol.-Min.), Associate Professor, Leading Researcher
2, Pirogova street, 630090, Novosibirsk
Scopus ID: 6507579131
I. V. Kirsanov
Gazprom neft company group
Russian Federation
Russian Federation
Ilya V. Kirsanov — Expert at the Competence Center for Integrated Geological Modeling
Saint Petersburg
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Review
For citations:
Tugarova M.A., Kirsanov I.V. Epigenetic processes in the formation of terrigenous reservoirs of Chona group deposits. PROneft. Professionally about Oil. 2023;8(4):44-51. (In Russ.) https://doi.org/10.51890/2587-7399-2023-8-4-44-51
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