Discussion
| Article # 23_2021 | submitted on 08/02/2021 displayed on website on 08/16/2021 |
| 20 p. | Trofimov V.A. |
| Features of basement structure of the southern part of Vilyuy syneclise | |
| Based on the analysis of seismic time sections along regional profiles made in the southern part of the Vilyuy hemisyneclise, dynamic anomalies that carry information about the features of the structure of the Archean-Lower Proterozoic basement have been identified. Using the experience of the Tatarstan basement study, in the Sinsk area dynamic anomalies in the upper part of the basement were interpreted as decompacted zones. These zones may represent high-capacity reservoirs and may be of interest for exploratory drilling in the future. Volumetric dynamic anomalies detected in the earth's crust at considerable depths and interpreted as energy-active (energy-saturated) volumes of the geological environment are of conciderable scientific and practical interest. The outlined connection of such anomalies with the location of large finds of important mineral resources (oil, gas, diamonds, uranium) makes their study a priority. One of such anomalies (Suntar) was found in the southwestern part of the Vilyuy area. Analysing this structure could be assumed the presence of kimberlite fields, as well as hydrocarbon accumulations in the studied part of the Suntar arch and its northeastern slope. This suggests the necessity for a case study of the identified anomaly. Considering that such a promising object in the Vilyuy hemisyneclise is not unique, it is advisable to start a step-by-step generalization of the results of geophysical exploration right now. Along with the study of the sedimentary structural cover and basement, one of the main goals of such a generalization should be the creation of a tectonodynamic map of this most promising territory. To fully solve these and other problems, it is necessary to carry out regional geophysical recearch on profiles that completely intersect the entire syneclise, more clearly coordinate the ongoing and planned regional activity, cover the entiere Vilyuy syneclise with modern aeromagnetic and airborne gravity surveys completely with the fulfilly study of adjacent tectonic elements. Keywords: basement, seismic exploration, dynamic anomalie, decompacted zone, energy-active geological volume, kimberlite field, hydrocarbon accumulation, Vilyuy syneclise. |
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| article citation | Trofimov V.A. Osobennosti vnutrennego stroeniya fundamenta yuzhnoy chasti Vilyuyskoy sineklizy [Features of basement structure of the southern part of Vilyuy syneclise]. Neftegazovaya Geologiya. Teoriya I Praktika, 2021, vol. 16, no. 3, available at: http://www.ngtp.ru/rub/2021/23_2021.html |
| DOI | https://doi.org/10.17353/2070-5379/23_2021 |
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Karaev N.A., Lebedkin P.A., Kosheleva T.D. Izuchenie seysmicheskoy geterogennosti zemnoy kory na primere regional'nykh nablyudeniy v «blizhney» zone [Studies the Earth’s crust seismic heterogeneity by the example of regional observations in the “near” zone]. Issledovaniya litosfery v rabotakh Peterburgskikh geofizikov (Razvitie idey akademika G.A. Gamburtseva). St. Petersburg: VIRG-Rudgeofizika - VNIIOkeangeologiya, 2003, pp.196-212.
Lapinskaya T.A., Popova L.P., Postnikov A.V., Yakovlev D.O. Otobrazhenie strukturno-veshchestvennoy neodnorodnosti fundamenta v stroenii osadochnogo chekhla Yuzhno-Tatarskogo svoda [Projection of structural and material inhomogeneity of the Basement to sedimentary cover structure in South Tatar Arch]. Geologiya nefti i gaza, 1989, no. 4, pp. 27-31.
Muslimov R.Kh., Khamadeev F.M., Ibatullin R.Kh., Kaveev I.Kh. Programma dal'neyshego izucheniya nedr Tatarii [Program for future studies of Tataria subsoil]. Glubinnye issledovaniya dokembriya vostoka Russkoy platformy. Kazan': Tatarskoe knizhnoe izdatel'stvo, 1980, pp. 3-13.
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Ponomarev V.S. Energonasyshchennost' geologicheskoy sredy [Energy saturation of geological medium]. Trudy geologicheskogo instituta. Moscow: Nauka, 2008, vol. 582, 377 p.
Postnikov A.V. Fundament vostochnoy chasti Vostochno-Evropeyskoy platformy i ego vliyanie na stroenie i neftegazonosnost' osadochnogo chekhla [Basement of the eastern part of the East European Platform and its influence on the Earth’s crust structure and petroleum potential]. Avtoreferat dissertatsii na soiskanie uchenoy stepeni doktora geologo-mineralogicheskikh nauk. Moscow: RGU NG, 2002, 54 p.
Sharov V.I., Grechishnikov G.A., Ryzhkova I.A. Seysmicheskoe izuchenie geodinamicheskikh sistem i flyuidnogo rezhima zemnoy kory Yuzhno-Tatarskogo svoda v svyazi s ego unikal'noy neftenosnost'yu [Seismic studies of geodynamic systems and fluid condition of the Earth’s crust in the South Tatar Arch in the context of its unique oil bearing capacity]. Uglevodorodnyy potentsial fundamenta molodykh i drevnikh platform: Perspektivy neftegazonosnosti fundamenta i otsenka ego roli v formirovanii i pereformirovanii neftyanykh i gazovykh mestorozhdeniy: materialy mezhdunarodnoy nauchnoy konferentsii. Kazan': Izd-vo Kazansk. un-ta, 2006, pp.312-315.
Sharov V.I., Grechishnikov G.A., Trofimov V.A. Reflectivity zones as thermodynamic systems of unequilibrium state of the consolidated crust. Abstracts. 7th International Symposium. Deep seismic profiling of the Continents. Asilomar, California, 1996. F 38, p.125.
Sharov V.I., Trofimov V.A., Solodilov L.N. Crustal reflectivity studies of diamond fields of the Siberian craton and oil regions of the Russian platform. Abstracts. 8th International Symposium. Deep seismic profiling of the Continents and their margins. Barcelona, Spain, 1998. T6-07, p.122.
Trofimov V.A. Glubinnye regional'nye seysmorazvedochnye issledovaniya MOGT neftegazonosnykh territoriy [Deep CMP seismic survey of oil and gas bearing areas]. Moscow, GEOS, 2014, 202 p.
Trofimov V.A. Krupnyy, perspektivnyy na gaz ob"ekt v Vilyuyskoy sineklize [A large gas prospect in the Vilyuy Syneclise]. Neftegazovaya Geologiya. Teoriya I Praktika, 2020, vol. 15, no.2, available at: http://www.ngtp.ru/rub/2020/16_2020.html. DOI: https://doi.org/10.17353/2070-5379/16_2020
Trofimov V.A. Novyy gazovyy gigant v Vilyuyskoy sineklize? [New gas giant in the Vilyuy syneclise?]. Geologo-geofizicheskie issledovaniya neftegazonosnykh territoriy: nauchnye i prikladnye aspekty («RosgeoNEFTEGAZ-2018»): sbornik materialov nauchno-prakticheskoy konferentsii (Moscow, 22-24 May 2018). St. Petersburg: AO «VNIGRI», pp. 28-32. - http://www.ngtp.ru/publication/sborniki/RosgeoOilGas.pdf
Trofimov V.A. Otsenka vozmozhnosti prognozirovaniya razuplotnennykh zon kristallicheskogo fundamenta po seysmicheskim dannym [Assessment of capability of decompacted zones prediction in crystalline basement from seismic data]. Geologo-geofizicheskoe modelirovanie pri poiskakh nefti i gaza. Moscow: IGiRGI, 1991, pp. 126-133.
Trofimov V.A., Korchagin V.I. Neftepodvodyashchie kanaly: prostranstvennoe polozhenie, metody obnaruzheniya i sposoby ikh aktivizatsii [Oil-refilling channels: spatial position, methods of identification and ways of activation]. Georesursy, 2002, no. 1(9), pp. 18-23.
Trofimov V.A., Zakirov F.F., Kolesnichenko L.Yu., Kosovtsev V.I., Slonchak K.A. Osnovnye rezul'taty regional'nykh seysmorazvedochnykh rabot v yuzhnoy chasti Vilyuyskoy sineklizy, Respublika Sakha (Yakutiya) [Main results of regional seismic exploration activity in southern part of Vilyuy Syneclise, Republic of Sakha (Yakutia)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2021, vol. 16, no. 3, available at: http://www.ngtp.ru/rub/2021/21_2021.html. DOI: https://doi.org/10.17353/2070-5379/21_2021