Oil-and-gas potential of the reef deposits in the Vilyuy syneclise south
https://doi.org/10.21285/2686-9993-2020-43-2-209-219
Abstract
The article discusses the results of the study of the buried Cambrian organogenic reef structures in the Siberian platform east, their reservoir properties assessment, and the nature of their distribution. The basis for the study was the seismic, electrical and geochemical investigations conducted on the territory. Also involved were the results of the paleogeographic reconstructions. The study has defined the resistance levels for the Cambrian-Vendian deposits that correspond to the development of the reservoirs promising for oil. The authors have constructed geoelectric sections that reflect the development of the organogenic structures in the joint area of the Vilyui syneclise and Aldan anteclise. The geoelectric characteristics of the West Yakut barrier reef and the demolition zone of the destroyed buildings have been described. The issues of hydrocarbon migration and accumulation within the region have been considered. Promising zones for drilling prospecting wells have been identified. The buried reef structures and the zone of the organogenic material demolition can serve as foci of hydrocarbon generation. The absence of the extensive high-resistance covers on the site makes it possible to predict the development of fractured-cavernous collectors formed by the leaching processes prevailing against the background of the water saturation of the Perm deposits in the Vilyui syneclise, and the transgression-regression stages. The Domanicoid type Kuonama deposits of the Yudomo-Oleneksky basin bordering the barrier reef can be considered hydrocarbon sources.
About the Authors
A. A. Kravchenko
Irkutsk National Research Technical University; “Irkutsk Geophysical Division”, JSC “Rosgeologia”
Russian Federation
Russian Federation
Postgraduate; Geophysicist, 2nd category
83 Lermontov St., Irkutsk 664074, Russia
9a Klary Tsetkin St., Irkutsk 664039, Russia
A. M. Pashevin
“Irkutsk Geophysical Division”, JSC “Rosgeologia”
Russian Federation
Russian Federation
Cand. Sci. (Geol. & Mineral.), Leading Geophysicist
9a Klary Tsetkin St., Irkutsk 664039, Russia
A. E. Lavrenteva
“Irkutsk Geophysical Division”, JSC “Rosgeologia”
Russian Federation
Russian Federation
Geophysicist, 1st category
9a, Klary Tsetkin St., Irkutsk, 664039, Russia
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Review
For citations:
Kravchenko A.A., Pashevin A.M., Lavrenteva A.E. Oil-and-gas potential of the reef deposits in the Vilyuy syneclise south. Earth sciences and subsoil use. 2020;43(2):209-219. (In Russ.) https://doi.org/10.21285/2686-9993-2020-43-2-209-219
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