ISSN 1608-5078 (Online)
Hydrocarbon systems and oil and gas potential prospects of the Anabar-Lena trough
S.V. Frolov, N.I. Korobova, E.A. Bakay, N.S. Kurdina
The Anabar-Lena trough is one of the least geologically studied areas on the Siberian Platform. A few wells drilled here have not yet revealed direct signs of its oil bearing. However, indirect data indicate that this region can be very prospective. This is proved by the proven oil and gas potential of the adjacent area (oil in the Khatanga saddle, bitumen of the Olenek field) and a thick sedimentary cover in the stratigraphic range from the Riphean to the Lower Cretaceous. The conducted studies show that several hydrocarbon systems are present in the section, which may be associated with the discovery in the future of industrial oil and gas fields. The most ancient of them are Upper Proterozoic and Lower Paleozoic – Riphean, Vendian and Cambrian. There are several levels enriched with organic matter in these deposits. As reservoirs can be sandy-silty units and organogenic carbonates as well. The most prospective is the Permian complex, its thickness can reach 2-3 km. It contains source rocks of good quality. The biomarker analysis shows that hydrocarbon composition of the Permian organic matter is similar to the oils and bitumens of the existing oil fields and showings in this complex. Permian reservoirs have a complex structure with an abundance of wedging and replacement zones, which was predetermined by a frequent change in sedimentation environments.
Anabar-Lena trough, Siberian platform, hydrocarbon systems, reservoirs, oil and gas source rocks
Bakay E.A., Smirnova M.E., Korobova N.I., Nadezhkin D.V. Lithological and geochemical characteristics of the Perm oil and gas bearing complex of the Lena-Anabar trough (on the example of the Ust-Olenek-2370 well). Moscow University Geology Bulletin. 2016. No. 1. Pp. 71-81. (In Russ.)
Botneva T.A., Frolov S.V. Conditions for the formation of hydrocarbon accumulations in the sedimentary cover of the Yenisei-Lena system of deflections. Geologiya nefti i gaza = The geology of oil and gas. 1995. No. 5. Pp. 36-41. (In Russ.)
Drachev S.S., Savostin L.A., Groshev V.G., and Bruni I.E. Structure and geology of the continental shelf of the Laptev Sea. Eastern Russian Arctic.Tectonophysics. 1998. V. 298. Pp. 357-393.
Frolov S.V. Akhmanov G.G., Bakay E.A., Lubnina N.V., Korobova N.I., Karnyushina E.E., Kozlova E.V. Meso-Neoproterozoic petroleum systems of the Eastern Siberian sedimentary basins., Precambrian Research. 2015. V. 259. Pp. 95-113.
Frolov S.V. Historical and genetic preconditions for the formation of oil and gas accumulation zones within the Yenisei-Lena system of deflections. Avtoref. Diss. kand. geol.-min. nauk [Abstract Cand. geol. and min. sci. diss.]. Moscow. 1990. 16 p. (In Russ.)
Frolov S.V., Karnyushina E.E., Korobova N.I., Bakay E.A., Krylov O.V., Ahmanov G.G., Zhukova E.V. Sever Vostochnoy Sibiri: geologiya, neftegazonosnost’ i obstanovki sedimentacii vendsko-kembriyskih formaciy [North Eastern Siberia: geology, oil and gas content and sedimentation conditions of the Vendian-Cambrian formations]. Moscow: OOO «Geoinformmark». 2014. (In Russ.)
Grausman V.V. Deposits of the Upper Precambrian of the Olenek Uplift from deep drilling materials. The Pacific. Geologiya = Geology. 1995. V. 14. No. 4. Pp. 133-136. (In Russ.)
Devjatov V.P. Sedimentation environment in the Toarian age in the east of the Siberian platform. V kn.: Novye dannye po stratigrafii i paleogeografii neftegazonosnyh bassejnov Sibiri [In book: New data on the stratigraphy and paleogeography of the oil and gas-bearing basins of Siberia]. Novosibirsk. 1983. Pp. 33-41. (In Russ.)
Kalinko M.K. The results of prospecting and exploration of oil and gas in the Anabar-Khatanga interfluve area (Nordvik region). V kn.: Neftegazonosnost’ severa Sibiri [In book: Oil and gas content of the North Siberia]. Leningrad. 1958. Pp. 134-170. (In Russ.)
Kaplan M.E. Litologiya morskih mezozoyskih otlozheniy severa Vostochnoy Sibiri [Lithology of marine Mesozoic deposits in the north of Eastern Siberia]. Leningrad: Nedra Publ. 1976. 230 p. (In Russ.)
Kashircev V.A., Filp R.P., Allen Dzh. et al. Biodegradation of biomarkers in natural bitumen of the Olenek Uplift. Geologiya i geofizika = Geology and geophysics. 1993. V. 34. No. 6. Pp. 44-56. (In Russ.)
Kashircev V.A., Kontorovich A.Je., Ivanov V.L.,Safronov A.F. Natural bitumen fields in the northeast of the Siberian platform (the Russian sector of the Arctic). Geologiya i geofizika = Geology and geophysics. 2010. V. 51. No. 1. Pp. 93-105. (In Russ.)
Kashirtsev V.A., Dzyuba O.S., Shurygin B.N., Kim N.S. Showings of Oil in Jurassic Section of Laptev Sea Coast (Siberian Arctic). Earth science frontiers. Short pap. the 8th Intern. Congr. on the Jurassic System. Sichuan, China. 2010. Vol. 17. Spec. Is. Pp. 384-385.
Safronov A.F., Sitnikov V.S., Kashircev V.A., Mikulenko K.I. Prospects of oil and gas potential of the Arctic part of the territory of Western Yakutia. The Russian Arctic. Geologicheskaya istoriya. Minerageniya. Geoekologiya [Geological history. Minerageny. Geoecology]. 2002. Pp. 347-353. (In Russ.)
Tektonika, geodinamika i metallogeniya Respubliki Saha (Jakutiya) [Tectonics, geodynamics and metallogeny of the Republic of Sakha (Yakutia)]. Moscow: MAIK «Nauka/Interperiodika». 2001. 571 p. (In Russ.) Shishkin B.B. Stratigraphy of Precambrian deposits of Western Yakutia based on deep drilling. Stratigrafiya i paleontologiya dokembriya i fanerozoya Sibiri [Stratigraphy and paleontology of the Precambrian and Phanerozoic of Siberia]. Novosibirsk. 1990. Pp. 38-46. (In Russ.)
Shishkin B.B., Isaev A.V. Features of the structure of the Precambrian and Cambrian deposits of the northeast of the Siberian platform. Geologiya i geofizika = Geology and geophysics. 1999. V. 40. No. 12. Pp. 1795-1807. (In Russ.)
Lomonosov Moscow State University, Moscow, Russia
Frolov S.V., Korobova N.I., Bakay E.A., Kurdina N.S. Hydrocarbon systems and oil and gas potential prospects of the Anabar-Lena trough. Georesursy = Georesources. 2017. Special issue. Part 2. Pp. 173-185. DOI: http://doi.org/10.18599/grs.19.18