Research Article Open Access

ALLOCATION OF FACIES ZONES IN DEPOSITS OF THE YUS11 BENK OF FAINSKI DEPOSIT

Abstract

The object of the study are productive container rocks of horizon YUS1, confined to the upper Vasyugan suite (J3 c – o) of Fainski oilfield. Vasyugan suite is transgressive-regressive sediments’ complex and conditionally divided into two sub-suites: lower Vasyugan (with much clay) and upper Vasyugan which includes sandstones of productive formation YUS11. All special geological studies were carried out by the method of multi-paleoreconstructions’ integration, "electrical" method, method of facies modeling, techniques of facial-cyclical studies (lithological and facies analysis). Highlighting of specific facies areas was conducted on the basis of the detailed correlation of sections of wells with the use of GSW data, materials for interpretation of seismic works, visual description and laboratory studies of the drill sample, the results of geological objects’ tests. A detailed paleotectonic and facies zoning of productive deposits of YUS11 layer within the Fainsk license area was conducted for the first time.

VADIM M. ALEKSANDROV, ANDREY A. PONOMAREV, EMIL SH. GAYSIN, AZAT A. ALMUKHAMETOV, OLEG V. KIRYUSHIN AND ARTEM A. KOLESNIK

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