Fortunatova info 3.2019 | oilandgasgeology

Якорь 1

N.K. Fortunatova, A.G. Shvets-Teneta-Gurii, M.A. Bushueva, A.S. Kanev,
S.A. Luchina, A.A. Avdeeva, A.G. Volodina, N.Yu. Kholmyanskaya

Methodology of lithologically screened and lithological oil and gas traps
prediction in Upper Devonian-Tournaisian and Lower Permian carbonate
plays of eastern Volga-Urals Petroleum Province

DOI 10.31087/0016-7894-2019-2-5-21

Issues of lithologically screened and lithological oil and gas traps prediction in Upper Devonian-Tournaisian and Lower Permian carbonate plays of Srednepreduralsky, Yuzhnopreduralsky, Permsky-Bashkirsky, Ufimsky, and Arlansky petroleum areas are discussed. Types of lithological and lithologically screened traps are identified on the basis of sedimentological analysis including diagnostics of genetic types of deposits, creation of sedimentation-storage models, and geological and geophysical benchmark series, which is based on geological interpretation of drilling and seismic data using Region-Seis 3D technology. The following objects are identified in Upper Devonian-Tournaisian series: lithological traps associated with solitary reefs in central zones of paleodomes; lithologically screened traps in Upper Famenian-Tournaisian shallow-water clastic carbonates draping reef topsides; lithological and lithologically screened traps associated with the deposits of carbonate and argillaceous-carbonate submarine fans forming clinoform bodies in Middle and Upper Famennian, Cherepetsky, and Kizelovsky horizons of the Tournaisian Stage. The following objects are identified in Lower Permian carbonate series: lithological traps in the Asselian–Sakmarian solitary reefs; lithologically screened traps in reef mass and surrounding apron deposits within the barrier reef system; structural traps in clastic carbonate rocks in the backreef parts of Asselian–Sakmarian and Artinskian reef series; lithological and lithologically screened traps in landslide bodies in the eastern slope of the Asselian–Sakmarian reef system. Maps of sedimentary sequences structure are created where zones of different trap types development are shown. Models, cross-sections and maps show the relationships of conventional and unconventional reservoirs.

Key words: Volga-Urals Petroleum Province; Upper Devonian-Tournaisian, Lower Permian series; carbonate deposits; sedimentological analysis; Domanik-type deposits; lithological, lithologically screened traps; oil and gas occurrence; oil and gas fields.

For citation: Fortunatova N.K., Shvets-Teneta-Gurii A.G., Bushueva M.A., Kanev A.S., Luchina S.A., Avdeeva A.A., Volodina A.G., Kholmyanskaya N.Yu. Methodology of lithologically screened and lithological oil and gas traps prediction in Upper Devonian-Tournaisian and Lower Permian carbonate plays of eastern Volga-Urals Petroleum Province. Geologiya nefti i gaza. 2019;(3):23–38. DOI: 10.31087/0016-7894-2019-3-23-38.

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