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LITHOLOGIC AND PETROGRAPHIC CHARACTERISTICS OF UPPER CAMBRIAN DEPOSITS OF DALDYNO-ALAKIT REGION

Rinat Atlasov, Nikolay Timofeev, Alexander Ivanov, Maria Nikolaeva, Sayid Berdyev

First published: 2017-11-20https://doi.org/10.5593/sgem2017h/15/s06.037View metrics

Abstract

Within the eastern Siberian platform are known objects worth mentioning from the standpoint of organizing the extraction of heavy oil and bitumen. The Siberian platform is characterized by a wide spreading of the surface-bearing and shallow-lying rocks saturated with products of hypergenic oil conversion. The article describes the results of lithologic and petrographic studies of bitumen-saturated carbonate rocks of Anabar anteclise southern slope (Daldyno-Alakit region). The upper part of the section of the sedimentary section of the Daldyno-Alakit region is exposed by numerous hydrogeological wells with limited core removal. It has been established that carbonate rocks of the Upper Cambrian age (the Markhinsky and Morkokinsky suites) can become the real targets for setting up the extraction of natural bitumens at depths of up to 300 m. The largest in scale bitumen manifestations are confined to the middle and upper parts of the Marhinsky suite section. Often there are bundles of dark brown and black porous-cavernous fissure limestones and dolomites soaked in malt and asphalt. As a result of petrographic studies it was established that the Daldyno-Alakit region section is composed of interlayer thin-plated gray and yellowish-gray limestones and brownish calcareous siltstones devoid of organic fragments. Microphotographs representing structural features of the morphology of the porous and cavernous space of the "International" tube carbonate rocks are presented in the article. All noted features of the morphology of the void space have a secondary origin and basically occurred in the rocks before they were saturated with oil.

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Title
LITHOLOGIC AND PETROGRAPHIC CHARACTERISTICS OF UPPER CAMBRIAN DEPOSITS OF DALDYNO-ALAKIT REGION
Authors
Rinat Atlasov, Nikolay Timofeev, Alexander Ivanov, Maria Nikolaeva, Sayid Berdyev
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Science and Technologies in Geology, Exploration and Mining
Publisher
STEF92 Technology
Year
2017
Pages
289-296
SWS Citekey
Atlasov20176289296
ISSN
1314-2704
ISBN
978-619-7408-26-3
Language
en
Publication type
Conference Paper
Keywords
Anabar antecliseDaldyno-Alakit regionheavy oilbitumencarbonate rocks.
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