Forecast of prospective areas for sediment type Domanic in the Volga-Ural oil and gas province

UDK: 553.98 (470.4/.5)
DOI: 10.24887/0028-2448-2018-12-14-17
Key words: he Domanic formation, source rocks, unconventional reservoir, seismic surveys, gravity and magnetic work, geochemical studies
Authors: A.A. Vashkevich (Gazprom Neft PJSC, RF, Saint-Petersburg), K.V. Strizhnev (Technological Center Bazhen LLC, RF, Saint-Petersburg), V.A. Shashel (Gazpromneft NTC LLC, RF, Saint-Petersburg), O.A. Zakharova (Gazpromneft NTC LLC, RF, Saint-Petersburg), A.A. Kasyanenko (Gazpromneft NTC LLC, RF, Saint-Petersburg), D.E. Zagranovskaya (Gazpromneft NTC LLC, RF, Saint-Petersburg), N.Yu. Grebenkina (Gazpromneft NTC LLC, RF, Saint-Petersburg)

The Domanic formation is a complex object for the prediction and modeling of promising zones with the presence of mobile hydrocarbons. This is due to the low level of knowledge of the object, the features of the structure and there are no unambiguous criteria that determine the prospects of deposits of this type.

The Domanic formation only recently began to be considered from the position of oil content in contrast to the Bazhenov formation. There is little data on inflow from the Domanic formation and the results of core studies. Deposits are of great interest in terms of increasing the resource base of Gazprom Neft.

The object of research is characterized by a thin-layered structure with lateral and vertical unevenness, as well as the presence of a sporadically developed reservoir inside the complex. Localization of prospective areas for search of hydrocarbon deposits is a non-trivial task. The paper used an integrated approach to research, taking into account the features of the geological structure and determining the key parameters of the prospects of the object. «Sweets spots» were identified on the generalization of data on core analysis, interpretation of logging, reinterpretation of seismic data and data of potential fields.

The publication will show the key defined geological, geophysical and geochemical parameters, which are interpreted in the allocation of promising areas for high-bituminous deposits of Domanic type, as well as a complex of geological exploration used to study unconventional deposits in Gazprom Neft.


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