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Yakutsk
The Pre-Verkhoyansk foredeep is territorially confined to the Republic of Sakha (Yakutia), in tectonic terms it is part of the Siberian Platform, being its eastern frame, its area is 520 thousand km2. According to the oil and gas geological zoning, the study area belongs to the Predverkhoyansk oil and gas region, which is part of the Leno-Vilyui oil and gas province. The trough stretches from the lower reaches of the Lena River to the middle course of the Aldan River. The shape of the deflection resembles an arc. The geological study of the Pre-Verkhoyansk foredeep territory begins at the end of the 40s and the beginning of the 50s of the last century. In 1951 specialists of the Yakutsk Geological Administration drew up a long-term plan for prospecting and exploration of oil and gas for 1955-1960. During the implementation of the plan, two deposits were discovered: Ust-Vilyuiskoye (1956) and Sobo-Khainskoye (1961). Parametric drilling was carried out on the territory of the trough, and seismic surveys were carried out using the common depth point method in the basin of the river Sobolokh-Mayan in the 70-80s, however, as a result of these and subsequent exploration, no commercial accumulations of hydrocarbons were discovered. Thus, the high prospects for the oil and gas potential of the Predverkhoyansk foredeep have not been proven at present. The authors carried out 3D basin modeling on the basis of published data on the territory of the Republic of Sakha (Yakutia) within the Lena branch of the Predverkhoyansk trough. Qualitative and quantitative criteria are analyzed and described for the prospects for oil and gas in the study area. Recommendations on promising areas of exploration work are presented. Schlumberger PetroMod software was used for basin modeling. Based on the results of the performed 3D modeling, the following oil and gas conditions were analyzed: paleostructural, lithofacies and geochemical conditions. The catagenetic evolution, the degree of depletion of the generation potential of oil and gas source rocks are also considered, the processes of migration and accumulation of hydrocarbons are evaluated.The Pre-Verkhoyansk foredeep is territorially confined to the Republic of Sakha (Yakutia), in tectonic terms it is part of the Siberian Platform, being its eastern frame, its area is 520 thousand km. According to the oil and gas geological zoning, the study area belongs to the Predverkhoyansk oil and gas region, which is part of the Leno-Vilyui oil and gas province. The trough stretches from the lower reaches of the Lena River to the middle course of the Aldan River. The shape of the deflection resembles an arc. The geological study of the Pre-Verkhoyansk foredeep territory begins at the end of the 40s and the beginning of the 50s of the last century. In 1951 specialists of the Yakutsk Geological Administration drew up a long-term plan for prospecting and exploration of oil and gas for 1955-1960. During the implementation of the plan, two deposits were discovered: Ust-Vilyuiskoye (1956) and Sobo-Khainskoye (1961). Parametric drilling was carried out on the territory of the trough, and seismic surveys were carried out using the common depth point method in the basin of the river Sobolokh-Mayan in the 70-80s, however, as a result of these and subsequent exploration, no commercial accumulations of hydrocarbons were discovered. Thus, the high prospects for the oil and gas potential of the Predverkhoyansk foredeep have not been proven at present. The authors carried out 3D basin modeling on the basis of published data on the territory of the Republic of Sakha (Yakutia) within the Lena branch of the Predverkhoyansk trough. Qualitative and quantitative criteria are analyzed and described for the prospects for oil and gas in the study area. Recommendations on promising areas of exploration work are presented. Schlumberger PetroMod software was used for basin modeling. Based on the results of the performed 3D modeling, the following oil and gas conditions were analyzed: paleostructural, lithofacies and geochemical conditions. The catagenetic evolution, the degree of depletion of the generation potential of oil and gas source rocks are also considered, the processes of migration and accumulation of hydrocarbons are evaluated.
- Geology > Sedimentary Basin (1.00)
- Geology > Geological Subdiscipline > Geochemistry (0.94)
- Geology > Geological Subdiscipline > Economic Geology > Petroleum Geology (0.44)
Engineering and Construction of Geotechnical Structures With Geotechnical Materials in Coastal Arctic Zone of Russia
Kudriavtcev, Sergei (Far Eastern State Transport University) | Berestianyi, Iurii (Far Eastern State Transport University) | Goncharova, Elena (Far Eastern State Transport University)
ABSTRACT Engineering and construction of geotechnical structures in northern regions of the Far East and Yakutia are always connected with high risks. It is especially true about linear transport projects that require greater level of reliability and are considered of high criticality rating. Reinforced ground structures are constructed and projected in mountainous tight working space near the Vostochnaya Khandyga river bed during reconstruction of a motor road from Yakutsk to Magadan. Reinforcing geogrids are made of high-density polyethylene according to the international requirements; they are protected from corrosion environment and their specific rates are stable and high. Numeric modeling of the automobile road structures behavior allowed to detail with high precision the theoretical calculations and basic project parameters of the structures. Professional use of properties of high-tech and high quality geomaterials ensures effective construction of projects in remote regions with cold climate. It helps minimize geological risks, provides quality of design and construction works as well as safety of structures.
- Asia > Russia > Far Eastern Federal District > Sakha Republic > Yakutsk (0.26)
- Asia > Russia > Far Eastern Federal District > Magadan Oblast > Magadan (0.26)
- Construction & Engineering (1.00)
- Transportation > Ground > Road (0.34)