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ISSUES OF CORRELATION AND INDEXATION OF PRODUCTIVE LPG STRATA OF THE SIGOVSKAYA FORMATION IN THE WESTERN PART OF THE YENISEI-KHATANGA REGIONAL TROUGH

E. V. Borisov

А.А.Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia

The article considers the problems of indexation and correlation of sand strata of the SG group of the Sigovskaya Formation developed in the north-eastern part of the West Siberian oil and gas province. On the basis of a detailed layering and correlation of well sections, individual permeable formations were identified and indexed in the Upper Jurassic section of the western part of the Yenisei–Khatanga Regional Trough (YeKhRT). The sections of the Sigovskaya Formation are compared in the southern (Turukhan–Yelogui) and northern (Ust-Yenisei) parts of the Taz–Kheta structural-facial area (SFA). The necessity of distinguishing their own stratotype for the productive horizons of the Sigovskaya Formation developed in the Ust-Yenisei Region is shown, and stratotype sections for sand formations of the SG group are proposed.

Keywords: Arctic Region, Yenisei-Khatanga regional trough, Upper Jurassic, Sigovskaya Formation, correlation, indexation, reservoirs of the SG group.

DOI 10.20403/2078-0575-2019-4-67-79