E.B. Grunis, V.B. Rostovshchikov, B.I. Davydenko

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Northern segment of Urals Foredeep: petroleum potential of suture zones

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DOI 10.31087/0016-7894-2021-1-41-56

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The suture zones of the northern segment of the Urals Foredeep are complex structural and tectonic formations with low exploration maturity and, at the same time, highly promising in terms of prospecting for new oil and gas deposits. In the article, petroleum potential of the Chernyshev and Chernov suture zones are substantiated on the basis of tectonodynamic, lithofacies and geochemical analyses. Structural-tectonic analysis made it possible to identify the high-priority objects for prospecting and exploration, including: autochthon of the Khosedayu – Neruyu swell, the East Vorgamusyur and Povarnitsky faultline structures, the Yunyaginsky reef object, the eastern part of the Chernov horst. Lithofacies rock associations and natural reservoirs formed in the Paleozoic time in the passive margin of the East European Platform are characterized by the presence of sedimentary porous-cavernous reservoirs in reefs, as well as secondary hypergene and tectonodynamic cavernous and fractured reservoirs. The geochemical environment contributed to hydrocarbon accumulation in the suture zones most elevated in relation to the kitchen areas. Based on the analysis of petroleum potential of the Chernyshev and Chernov suture zones, recommendations are given for further exploration and prospecting of these unique geological objects.

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Key words: northern segment of Urals Foredeep; suture zones; horst; ridge; tectonodynamic analysis; reef formations; passive continental margin; orogeny.

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For citation: Grunis E.B., Rostovshchikov V.B., Davydenko B.I. Northern segment of Urals Foredeep: petroleum potential of suture zones. Geologiya nefti i gaza. 2021;(1):41–56. DOI: 10.31087/0016-7894-2021-1-41-56. In Russ.

 

References

1. Bogdanov B.P., Rostovshchikov V.B., Nedilyuk L.P., Marakova I.A., Senin S.V. Tectonical and geochemical preconditions for petroleum potential of Chernyshov ridge. Neftegazovaya geologiya. Teoriya i praktika. 2016;11(2). Available at: http://www.ngtp.ru/rub/4/18_2016.pdf (accessed on 05.11.2020). DOI: 10.17353/2070-5379/18_2016. In Russ.
2. Yudin V.V. Proiskhozhdenie Predural’skogo kraevogo progiba [Origin of Urals Foredeep]. In: Tektonika severo-vostoka Evropeiskoi platformy: tr. In-ta geologii Komi NTs UrO AN SSSR. Issue 68. Syktyvkar, 1998. pp. 90–97. In Russ.
3. Grunis E.B., Bogdanov B.P., Gagarin S.V., Davydenko B.I. Perspektivy neftegazonosnosti slozhnopostoroennykh tektonicheskikh elementov Timano-Pechorskoi provintsii na primere gryady Chernysheva [Prospects for oil and gas potential of complex tectonic elements of the Timan-Pechora province by the example of the ridge Chernyshev]. Geologiya, geofizika i razrabotka neftyanykh mestorozhdeniy. 2001;(11):28–33. In Russ.
4. Kostyuchenko S.L., Morozov A.F., Kremenetskii A.A. Timan-Urals-Paykhoy collisional region: structure, evolution, geodynamics. Results of complex geological and geophysical studies. Moscow: Geokart-GEOS; 2012. 210 p. In Russ.

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E.B. Grunis    Scopus  iD 
Doctor of Geological and Mineralogical Sciences,
Chief Researcher
All-Russian Research Geological Oil Institute,
36, Shosse Entuziastov, Moscow, 105118, Russia
e-mail: grunis@vnigni.ru
 

V.B. Rostovshchikov
Candidate of Geological and Mineralogical Sciences, Associate
Professor,
Head of Chair
Ukhta State Technical University
13, ul. Pervomaiskaya, Ukhta, 169300, Russia
e-mail: vrostovchikov@ugtu.net
 

B.I. Davydenko
Candidate of Geological and Mineralogical Sciences,
Deputy Director-General
for Licensing Issues
All-Russian Research Geological Oil Institute,
36, Shosse Entuziastov, Moscow, 105118, Russia
e-mail: boroil@vnigni.ru