Valyaeva O.V.

valyaeva@geo.komisc.ru




Graduated from Syktyvkar State University (1994), specialization "chemistry".
PhD in Geological and Mineralogical Sciences.
Senior Researcher Institute of Geology named after Academician N.P. Yushkin Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences (IG FRC Komi SC UB RAS).
Area of scientific interests: geochemistry of organic matter of rocks, oils, solid combustible minerals.
Author of 79 publications.
Stratigraphy and lithology
Article # 37_2023 submitted on 08/22/2023 displayed on website on 10/04/2023
15 p.
pdf Visean coal-bearing strata of the northeast European part of Russia
In early Visean times, on the territory of the European part of Russia there was a significant continental territory with developed river systems, lakes and swamps. Depositional environments favored the development of fluvial, lacustrine and coal-bearing sediments from the end of Tournaisian time until the end of the Early Visean.
Considering the relatively connection of coal deposits with oil fields, the Visean terrigenous strata can be regarded as a coal, oil and gas bearing formation, and coals as a source of not only gas, but also liquid hydrocarbons. The study of paragenetic connections between coal and oil formation is an important geological task that can solve the problem of the formation of oil fields in some region.

Keywords: Visean coal-bearing strata, coal-oil-gas-bearing formation, oil formation, Northeast of the European part of Russia.
article citation Ryabinkina N.N., Valyaeva O.V. Vizeyskie uglenosnye otlozheniya severo-vostoka evropeyskoy chasti Rossii [Visean coal-bearing strata of the northeast European part of Russia]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 4, available at: http://www.ngtp.ru/rub/2023/37_2023.html EDN: NNGCAI
References
   Gazougol'nye basseyny Rossii i mira [Gas-coal basins of Russia and the world]. M.V. Golitsyn, A.M. Golitsyn, N.V. Pronina, A.Ya. Arkhipov, A.Kh. Bogomolov, D.A. Tsikarev. Moscow: MGU, RAEN, 2002, 250 p.
   Geologicheskoe soveshchanie po perspektivam Kizelovskogo kamennougol'nogo basseyna [Geological meeting on the prospects of the Kizelovsky coal basin]. Sbornik materialov Geologicheskogo soveshchaniya po perspektivam Kizelovskogo kamennougol'nogo basseyna (17-19 Apr 1956). Editor P.V. Vasil'ev; MUP SSSR. «Glavuglegeologiya». Perm': Kn. izd-vo, 1958, 210 p.
   Golitsin M.V., Golitsin A.M., Pronina N.V. Problemy ugleneftegazonosnosti osadochno-porodnykh basseynov [Problems of coal and gas content of sedimentary rock basins]. Razvedka i okhrana nedr, 1997, no. 12, pp. 2-7.
   Larochkina I.A. Paleogeomorfologicheskaya obstanovka osadkonakopleniya radayevsko-bobrikovskikh otlozheniy i yeye vliyaniye na formirovaniye kollektorov [Paleogeomorphological setting of sedimentation in the Radaev-Bobrikov strata and its influence on the formation of reservoirs]. Tr. TatNIPI-neft', 1987, is. 60, pp. 28-38.
   Larochkina I.A., Gafurov Sh.Z., Kizil'shteyn L.Ya., Khasanov R.R. Petrograficheskie tipy vizeyskikh ugley Kamskogo basseyna. Atlas [Petrographic types of Visean coals of the Kama basin. Atlas]. Kazan': Izd-vo Kazan. un-ta, 2001, 176 p.
   Moseychik Yu. V. Rannekamennougol'naya flora Podmoskovnogo basseyna. T. 1. Sostav, ekologiya, evolyutsiya, fitogeograficheskiye svyazi i stratigraficheskoye znacheniye [Early Carboniferous flora of the Moscow Basin]. Vol. 1. Composition, ecology, evolution, phytogeographic relationships and stratigraphic significance. Moscow: GEOS, 2009, 187 p.
   Moseychik Yu.V., Ryabinkina N.N. K poznaniyu vizeyskoy flory Pechorskogo Priural'ya [To the knowledge of the Visean flora of the Pechora Fore-Urals] Lethaea rossica. Rossiyskiy paleobotanicheskiy zhurnal, 2012, vol. 6. pp. 1-22.
   Ryabinkina N.N. Vizeyskiye terrigennyye otlozheniya severo-vostoka Yevropeyskoy platform [Visean terrigenous strata of the northeast of the European Platform]. Litosfera, 2009, no. 2, pp. 1-13.
   Ryabinkina N.N., Moseychik Yu.V., Ryabinkin S.V. Yedzhyd-Kyrtinskoye ugol'noye mestorozhdeniye [Edzhyd-Kyrta coal deposit]. Vestnik Instituta geologii, 2013, no. 10, pp. 2-6.
   Ryabinkina N.N., Valyaeva O.V. Litotipy porod i geokhimiya organicheskogo veshchestva terrigennykh otlozheniy nizhnego karbona yuzhnoy chasti gryady Chernysheva [Lithotypes of rocks and geochemistry of organic matter of the Lower Carboniferous terrigenous section of the Southern part of the Chernyshev Ridge]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 2, available at: http://www.ngtp.ru/rub/2023/19_2023.html DOI: 10.17353/2070-5379/19_2023
   Ryabinkina N.N., Valyaeva O.V., Ryabinkin S.V. Organicheskoye veshchestvo vizeyskikh uglenosnykh otlozheniy severa Predural'skogo progiba [Organic matter of the Visean coal-bearing strata in the north of the Cis-Ural trough]. Vestnik Instituta geologii, 2013, no. 5, pp. 9-11.
   Scotese C.R., Boucot A.J., Chen Xu Atlas of Phanerozoic Climatic Zones (Mollweide Projection). Vol. 1-6. Paleomap Project PaleoAtlas for ArcGIS, PALEOMAP Project, Evanston, IL 2015. DOI: 10.13140/2.1.2757.8567
   Ugol'naya baza Rossii. Tom 1. Ugol'nye basseyny i mestorozhdeniya Evropeyskoy chasti Rossii [Coal base of Russia. Vol. 1. Coal basins and deposits of the European part of Russia]. Moscow: ZAO «Geoinformmark», 2000, 483 p.
Geochemical research
Article # 19_2023 submitted on 05/03/2023 displayed on website on 06/05/2023
15 p.
pdf Lithotypes of rocks and geochemistry of organic matter of the Lower Carboniferous terrigenous section of the southern part of the Chernyshev Ridge
The northern territories of the European part of Russia are frequently of great interest in terms of several formations studying and finding of new hydrocarbon accumulations. We have identified the lithotypes of rocks in the section, analyzed the thickness and petroleum source properties of the Tournaisian-Visean strata in the south of the Chernyshev Ridge of the Timan-Pechora petroleum province. The geochemical studies of the organic matter of the rock structures made it possible to clarify its composition and degree of maturity, to assess the hydrocarbon potential of oil and gas source rocks.
The results of additional geochemical studies of rocks and bitumoids showed that the initial organic matter of terrigenous rocks accumulated in similar coastal-marine conditions, but the composition of organic matter was somewhat different. To date, the degree of transformation of organic matter corresponds to the beginning of the "oil window" phase, which suggests the possibly formation of oil hydrocarbons in these territories and the discovery of new oil accumulations in overlying reservoirs.

Keywords: rock lithotype, organic matter, “oil window”, bitumoid, petroleum source potential, Chernyshev Ridge, Timan-Pechora petroleum province.
article citation Ryabinkina N.N., Valyaeva O.V. Litotipy porod i geokhimiya organicheskogo veshchestva terrigennykh otlozheniy nizhnego karbona yuzhnoy chasti gryady Chernysheva [Lithotypes of rocks and geochemistry of organic matter of the Lower Carboniferous terrigenous section of the southern part of the Chernyshev Ridge]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 2, available at: http://www.ngtp.ru/rub/2023/19_2023.html EDN: KJLQSH
References
   Bushnev D.A., Plotitsyn A.N., Gruzdev D.A., Burdel’naya N.S. Organicheskoe veshchestvo famenskikh otlozheniy yuzhnoy chasti gryady Chernysheva (razrez na r. Iz"yael') [Famennian organic matter of the southern part of the Chernyshev Ridge (Iz’yayol River section)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2017, vol. 12, no. 3, available at: http://www.ngtp.ru/rub/1/26_2017.pdf DOI: 10.17353/2070-5379/26_2017
   Kontorovich A.E., Bogorodskaya L.I., Golyshev S.I. Zakonomernosti fraktsionirovaniya izotopov ugleroda v sedikakhitakh [Patterns of fractionation of carbon isotopes in sedikachites]. Geologiya i geofizika, 1985, no. 9, pp. 34-42.
   Kontorovich A.E., Verkhovskaya N.A., Timoshina I.D., Fomichev A.S. Izotopnyy sostav ugleroda rasseyannogo organicheskogo veshchestva i bitumoidov i nekotoryye spornyye voprosy teorii obrazovaniya nefti [Isotopic composition of carbon in dispersed organic matter and bitumoids and some controversial issues in the theory of oil formation]. Geologiya i geofizika, 1986, no. 5, pp. 3-13.
   Martynov A.V., Zharkov A.M., Nikolaeva A.М. Geologicheskoe stroenie i perspektivy neftegazonosnosti yuzhnoy chasti gryady Chernysheva [Geological model and petroleum perspectives of the southern part of the Chernyshov Ridge]. Neftegazovaya Geologiya. Teoriya I Praktika, 2021, vol. 16, no. 1, available at: http://www.ngtp.ru/rub/2021/2_2021.html DOI: 10.17353/2070-5379/2_2021
   Peters K.E., Walters C.C., Moldowan J.M. The Biomarker Guide II. Biomarkers and Isotopes in Petroleum Systems and Earth History. 2nd ed. V. 2. Cambridge: Cambridge University Press, 2005, 1156 p.
   Ryabinkina N.N., Shadrin A.N. Usloviya formirovaniya terrigennykh otlozheniy nizhnego karbona yuzhnoy chasti gryady Chernysheva [Formation of the Lower Carboniferous terrigenous rocks in the southern part of the Chernyshev Ridge]. Neftegazovaya Geologiya. Teoriya I Praktika, 2023, vol. 18, no. 1, available at: http://www.ngtp.ru/rub/2023/6_2023.html DOI: 10.17353/2070-5379/6_2023
   Shadrin A.N. Stroyeniye nizhnekamennougol'nykh terrigennykh otlozheniy na r. Iz"yayol' (yuzhnaya chast' gryady Chernysheva)[The structure of the Lower Carboniferous terrigenous strata on the river Izyayol (southern part of the Chernyshev Ridge)]. Struktura, veshchestvo, istoriya litosfery Timano-Severoural'skogo segmenta: materialy 29-y nauchnoy konferentsii, Syktyvkar: Geoprint, 2020, pp. 120-1124.
   Vassoevich N.B. Geokhimiya organicheskogo veshchestva i proiskhozhdeniye nefti: izbrannyye trudy [Geochemistry of organic matter and the origin of oil: selected works]. Moscow: Nauka, 1986, 386 p.
Geochemical research
Article # 25_2022 submitted on 07/01/2022 displayed on website on 08/16/2022
13 p.
pdf The oil geology and geochemistry of Sorokin swell Permian and Carboniferous fields (Timan-Pechora petroleum province)
The results of geochemical studies concerning oils from Permian and Carboniferous fields of the Sorokin swell of the Varandey-Adzva structural zone of the Timan-Pechora petroleum province are presented. The reservoirs represented by carbonate of Carboniferous and Lower Permian age are characterized by good and medium reservoir properties - the type of reservoirs is mainly fractured- and secondary- pore. Based on our data, it was found that the oils were formed in the parent carbonate-clay strata with a significant contribution of algal source organic matter. It is likely that the Visean-age oil is generated by Silurian-Lower Devonian strata. The thermal maturity of the oils corresponds to the MK2 gradation of the transformation of the rocks organic matter.

Keywords: oil field, Paleozoic strata, reservoir properties, oil geochemistry, Varandey-Adzva structural zone, Timan-Pechora petroleum province.
article citation Valyaeva O.V., Ryabinkina N.N., Bushnev D.A. Geologiya i geokhimiya neftey permskikh i kamennougol'nykh zalezhey mestorozhdeniy vala Sorokina Timano-Pechorskoy neftegazonosnoy provintsii [The oil geology and geochemistry of Sorokin swell Permian and Carboniferous fields (Timan-Pechora petroleum province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2022, vol. 17, no. 3, available at: http://www.ngtp.ru/rub/2022/25_2022.html
DOI https://doi.org/10.17353/2070-5379/25_2022
References
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   Atlas neftegazonosnosti i perspektiv osvoeniya zapasov i resursov uglevodorodnogo syr'ya Nenetskogo avtonomnogo okruga [Atlas of petroleum potential and prospects for the development of hydrocarbon reserves and resources of the Nenets Autonomous Okrug]. Nar'yan-Mar: GUP NAO «NIATs», 2004, 115 p.
   Bushnev D.A. Geokhimicheskie usloviya formirovaniya neftey Varandey-Adz'vinskoy zony Pechorskogo basseyna [Geochemical conditions for the formation of oils in the Varandey-Adzva zone of the Pechora basin]. Avtoreferat dis. na soisk. uchen. step. k. g.-m. n. - Syktyvkar, 1998, 16 p.
   Bushnev D.A., Burdel'naya N.S., Valyaeva O.V., Derevesnikova A.A. Geokhimiya neftey pozdnego devona Timano-Pechorskogo basseyna [Geochemistry of Late Devonian oils of the Timan-Pechora basin]. Geologiya i geofizika, 2017, vol. 58, no. 3-4, pp. 410-422. DOI: https://doi.org/10.15372/GiG20170306
   Clark J.P., Philp R.P. Geochemical characterization of evaporite and carbonate depositional environments and correlation of associated crude oils in the Black Creek basin, Alberta. Bulletin of Canadian Petroleum Geology, 1989, vol. 37, pp. 401-416.
   Geneticheskaya svyaz' uglevodorodov organicheskogo veshchestva porod i neftey [Genetic connection between hydrocarbons of rocks organic matter and oils]. V.V. Il'inskaya Moscow: Nedra, 1985, 160 p.
   Gordadze G.N., Zonn M.S., Matveeva I.A., Dzyublo A.D. Geokhimiya rasseyannogo organicheskogo veshchestva porod i neftey kamennougol'nykh i devonskikh tolshch mestorozhdeniya Medynskoe-more [Geochemistry of dispersed organic matter of rocks and oils of the Carboniferous and Devonian strata of the Medyn-Sea field]. Geologiya nefti i gaza, 2001, no. 1, pp. 53-61.
   Kashirtsev V.A. Organicheskaya geokhimiya naftidov vostoka Sibirskoy platformy [Organic geochemistry of naphthides from the east of the Siberian Platform]. Yakutsk: YaF Izd-va SO RAN, 2003, 160 p.
   Krayneva O.V., Gubaydullin M.G. Geologo-fizicheskaya kharakteristika produktivnykh plastov Varandeyskogo mestorozhdeniya i otsenka potentsial'noy ekologicheskoy opasnosti syroy nefti [Geological and physical characteristics of the productive levels of the Varandey field and assessment of the potential environmental hazard of crude oil]. Vestnik Severnogo (Arkticheskogo) federal'nogo universiteta. Seriya: Estestvennye nauki, 2013, no.3, pp. 14-23.
   Larskaya E.S., Khramova E.V., Zagulova O.P. Geneticheskie sootnosheniya i transformatsiya tsiklicheskikh UV bitumov i neftey otlozheniy vala Sorokina [Genetic relationships and transformation of cyclic HC bitumens and oils from the Sorokin swell strata]. Geologiya nefti i gaza, 1989, no. 3, pp. 38-44.
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   Peters K.E., Walters C.C., Moldowan J.M. The biomarker guide II. Biomarkers and isotopes in petroleum systems and earth history. 2nd ed. V. 2. Cambridge: Cambridge University Press, 2005, 1156 p.
   Prischepa O.M., Bogatskiy V.I., Makarevich V.N., Chumakova O.V., Nikonov N.I., Kuranov A.V., Bogdanov M.M. Novye predstavleniya o tektonicheskom i neftegazogeologicheskom rayonirovanii Timano-Pechorskoy neftegazonosnoy provintsii [The Timan-Pechora petroleum province - new tectonical insight]. Neftegazovaya Geologiya. Teoriya I Praktika, 2011, vol. 6, no. 4, available at: http://www.ngtp.ru/rub/4/40_2011.pdf
   Radke M. Application of aromatic compounds as maturity indicators in source rocks and crude oils. Mar. Petrol. Geol., 1988, vol. 5, pp. 224-236.
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   Temyanko M.B., Sobolev B.C., Vasil'eva V.F., Shchelovanov Yu.S., Levicheva N.P., Zlodeeva T.B. Osobennosti sostava i usloviya formirovaniya tyazhelykh neftey severo-vostoka Timano-Pechorskoy provintsii [Features of the composition and formation conditions of heavy oils in the north-east of the Timan-Pechora province]. Aspekty geneticheskikh svyazey neftey i organicheskogo veshchestva porod. Moscow: Nauka, 1986, pp. 106-109.
   Tisso V., Vel'te D. Obrazovanie i rasprostranenie nefti [Formation and distribution of oil]. Moscow: Mir, 1981, 502 p.
   Valyaeva O.V., Bushnev D.A. Geokhimicheskaya kharakteristika neftey iz otlozheniy nizhnego paleozoya Varandey-Adz'vinskoy strukturnoy zony Pechorskoy sineklizy [Geochemical characteristics of oils from the Lower Paleozoic strata of the Varandey-Adzva structural zone of the Pechora syneclise]. Izvestiya Komi nauchnogo tsentra Ural'skogo otdeleniya Rossiyskoy akademii nauk, 2022, no. 2(54), pp. 30-40. DOI: https://doi.org/10.19110/1994-5655-2022-2-30-40
   Valyaeva O.V., Ryabinkina N.N., Bushnev D.A. Uglevodorody-biomarkery neftey Labaganskogo mestorozhdeniya Timano-Pechorskoy neftegazonosnoy provintsii [Biomarkers hydrocarbon of oils from the Labagan field of the Timan-Pechora petroleum province]. Georesursy, 2020, no. 22(1), pp. 46-54. DOI: https://doi.org/10.18599/grs.2020.1.46-54
Geochemical research
Article # 29_2021 submitted on 09/17/2021 displayed on website on 09/29/2021
13 p.
pdf Organic matter formation conditions and content of the Lower Carboniferous strata in the north of the Timan-Pechora petroleum province
We analyzed the thickness and petroleum bearing properties of Tournaisian-Visean strata in the north of the Kolva megaswell in the Timan-Pechora petroleum province. Geochemical studies of the organic matter allowed clarifying its type of organic composition composition and its degree of thermal maturity.
We determined that the initial organic matter had been accumulated under similar marine and coastal-marine conditions and consequently organic matter composition was somewhat different. By now, the degree of thermal organic matter transformation corresponds to the beginning of the "oil window" phase, which suggests presente the formation of oil accumulation in this section.

Keywords: organic matter, "oil window", Tournaisian-Visean, petroleum bearing properties, Timan-Pechora petroleum province.
article citation Ryabinkina N.N., Valyaeva O.V. Usloviya formirovaniya i sostav organicheskogo veshchestva otlozheniy nizhnego karbona severa Timano-Pechorskoy provintsii [Organic matter formation conditions and content of the Lower Carboniferous strata in the north of the Timan-Pechora petroleum province]. Neftegazovaya Geologiya. Teoriya I Praktika, 2021, vol. 16, no. 3, available at: http://www.ngtp.ru/rub/2021/29_2021.html
DOI https://doi.org/10.17353/2070-5379/29_2021
References
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   Bushnev D.A., Burdel'naya N.S., Valyaeva O.V., Derevesnikova A.A. Geokhimiya neftey pozdnego devona Timano-Pechorskogo basseyna [Petroleum geochemistry of the Late Devonian of the Timan-Pechora basin]. Geologiya i geofizika, 2017, vol. 58, no. 3-4, pp. 410-422. DOI: https://doi.org/10.15372/GiG20170306
    Geoflyuidal'nye sistemy Timano-Pechorskoy provintsii [Geofluidic systems of the Timan-Pechora province]. S.A. Danilevskiy, Z.P. Sklyarova, Yu.M. Trifachev. Ukhta, 2003, 298 p.
    Dorogochinskaya V.A., Stepanov A.N., Fadeev V.S. Dorogochinskaya V.A., Stepanov A.N., Fadeev V.S. Geokhimicheskie faktory, vliyayushchie na formirovanie sostava reliktovykh alkanov C17-C20 v kaustobiolitakh [Geochemical factors influencing the formation of the composition of relict C17-C20 alkanes in caustobioliths]. Neftekhimiya, 1993, vol. 33, pp. 7-16.
   Geologiya i geokhimiya nefti i gaza: Uchebnik [Petroleum geology and geochemistry: Textbook]. O.K. Bazhenova, Yu.K. Burlin, B.A. Sokolov, V.E. Khain. Moscow, MGU, 2000, 384p.
   Peters K.E., Walters C.C., Moldowan J.M. The Biomarker Guide II. Biomarkers and Isotopes in Petroleum Systems and Earth History. 2nd ed. V. 2. Cambridge University Press, 2005, 1156 p.
   Ryabinkina N.N., Ryabinkin S.V. Neftegazovyy potentsial nizhnekamennougol'nykh otlozheniy severa Predural'skogo progiba [Oil and gas potential of Lower Carboniferous deposits of the north of the Preural Foredeep]. Vestnik geonauk, 2019, no. 9, pp. 28-32. DOI: https://doi.org/10.19110/2221-1381-2019-9-33-37
   Ryabinkina N.N., Valyaeva O.V. Geologiya i geokhimiya neftey Labaganskogo neftyanogo mestorozhdeniya (Timano-Pechorskaya provintsiya) [Petroleum geology and geochemistry of Labagan oil field (Timan-Pechora Petroleum Province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2018, vol. 13, no. 4, available at: http://www.ngtp.ru/rub/2018/36_2018.html. DOI: https://doi.org/10.17353/2070-5379/36_2018
   Waples D.W. and Machihara T. Biomarkers for geologist - a practical guide to the application of steranes and triterpanes in petroleum geology. AAPG methods in exploration, 1991, vol. 9, 91 p.
Geochemical research
Section editor – PhD in geology and mineralogy Bazhenova T.K.
Article # 20_2020 submitted on 04/24/2020 displayed on website on 06/05/2020
14 p.
pdf Geochemical characteristics of Gamburtsev shaft oils
The composition of cyclic and acyclic hydrocarbon biomarkers, aromatic hydrocarbons and dibenzothiophenes of the oils of the Gamburtsev shaft was investigated. The hydrocarbon composition of the oils of the three studied fields – Cherpayu, Khasyrey and Nyadeyu is almost identical; these oils share a common source of organic matter. Based on the complex of the obtained data, it was found that the oils were produced by carbonate-clay source rocks with a significant contribution of the algal initial organic matter. It is likely that the oils are syngenetic to the host Silurian-Lower Devonian. The thermal maturity of the oils corresponds to the oil window peak.

Keywords: Silurian - Lower Devonian, oil biomarkers, aromatic hydrocarbons, oil dibenzothiophenes, Gamburtsev shaft.
article citation Valyaeva O.V., Bushnev D.A. Geokhimicheskaya kharakteristika neftey vala Gamburtseva [Geochemical characteristics of Gamburtsev shaft oils]. Neftegazovaya Geologiya. Teoriya I Praktika, 2020, vol. 15, no. 2, available at: http://www.ngtp.ru/rub/2020/20_2020.html
DOI https://doi.org/10.17353/2070-5379/20_2020
References
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   Bushnev D.A., Burdel'naya N.S., Valyaeva O.V. N-alkilbenzol i 1-n-alkilnaftalin sostava S21 v neftyakh: izotopnyy effekt pri tsiklizatsii/aromatizatsii? [N-alkylbenzene and 1-n-alkylnaphthalene of composition C21 in oils: isotopic effect during cyclization / aromatization?]. Geokhimiya, 2020, vol. 65, no. 1, pp. 59-63. DOI: https://doi.org/10.31857/S0016752520010033
   Bushnev D.A., Burdel'naya N.S., Valyaeva O.V., Derevesnikova A.A. Geokhimiya neftey pozdnego devona Timano-Pechorskogo basseyna [Petroleum geochemistry of the Late Devonian of the Timan-Pechora basin]. Geologiya i geofizika, 2017, vol. 58, no. 3-4, pp. 410-422. DOI: https://doi.org/10.15372/GiG20170306
   Bushnev D.A., Valyaeva O.V., Burdel'naya N.S. Izotopnyy sostav ugleroda neftey nizhnego paleozoya severnoy chasti Timano-Pechorskogo basseyna [Carbon isotope composition of the Lower Paleozoic oils in the northern part of the Timan-Pechora basin]. Vestnik IG Komi NTS UrO RAN, 2019, no. 7, pp. 3-4. DOI: https://doi.org/10.19110/2221-1381-2019-7-3-7
   Bushnev D.A., Valyayeva O.V. n-Alkilbenzoly i 1-n-alkilnaftaliny v ryade neftey pozdnedevonskogo vozrasta Timano-Pechorskoy provintsii [n-Alkylbenzenes and 1-n-alkylnaphthalenes in a number of oils of the late Devonian of the Timan-Pechora province]. Vestnik IG Komi NTS UrO RAN, 2015, no. 10, pp. 17-20.
   Danilov B.H., Men'shin A.G., Romanov I.E. Perspektivy neftegazonosnosti nizhnedevonskikh otlozheniy Timano-Pechorskoy provintsii [Prospects for the oil and gas potential of the Lower Devonian of the Timan-Pechora province]. Geologiya nefti i gaza, 1993, no. 9, pp. 17-21.
   Dmitrievskiy A.N., Eremin N.A., Shabalin N.A. Arkticheskiy potentsial Otsenki neftegazonosnosti shel'fa Sibirskoy platformy [The arctic potential of the petroleum potential of the Siberian Platform Shelf]. Neft' Rossii, 2018, no. 5, pp. 9-13.
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   Zharkov V.A., Nalimov N.V., Romanova N.V., Patratiy L.E., Gubenok G.P., Imambaev F., Timofeeva S.A. Gosudarstvennaya geologicheskaya karta Rossiyskoy Federatsii masshtaba 1:200000. Izdanie vtoroe. Seriya Polyarno-Ural'skaya. Listy Q-41-I, II. Ob"yasnitel'naya zapiska [State geological map of the Russian Federation on the scale of 1: 200 000. Second edition. Series Polar-Ural. Sheets Q-41-I, II.]. St. Petersburg: Kartograficheskaya fabrika VSEGEI, 2000, 70 p.
Geochemical research
Section editor – PhD in geology and mineralogy Bazhenova T.K.
Article # 41_2017 submitted on 09/07/2017 displayed on website on 12/11/2018
15 p.
pdf  Silurian and Lower Devonian petroleum source rocks of the Chernov Ridge (Timan-Pechora Basin, Russia)
The article presents the results of geochemical research of Silurian and Lower Devonian sequences on the Chernov ridge. The main part of the section is represented by petroleum source rocks with (TOC concentrations of 0,1–0,5%). Petroleum source rocks with increased contents of organic matter (> 0,5%) belong to clay-carbonate intervals in Silurian part of the section and layers of bituminous dolomites in the Lower Devonian. The hydrocarbon composition of the saturated fraction of bitumen in the Silurian-Lower Devonian deposits show a sapropel organic matter, probably of a different genetic types – plankton and marin algae. The isotopic composition of organic carbon (?13С, ‰) of bitumen part (30,1–32,6‰) and kerogen component (30,9–31,1‰) confirms the sapropel genesis of organic matter. The level of catagenetic transformation, estimated by the conodont colour alteration index, indicates that the Silurian-Lower Devonian deposits are in the main zone of oil generation (subdivision of the catagenesis MK1-2). The process of hydrocarbon generation is confirmed by the presence of bitumen throughout the section of the Silurian and Lower Devonian sequences.

Keywords: Silurian and Lower Devonian sequences, source rock, organic matter, bitumen, isotopic composition of organic carbon, Chernov ridge, Timan-Pechora Basin.
article citation Kotik I.S., Kotik O.S., Valyaeva O.V., Sokolova L.V. Neftegazomaterinskie porody siluriyskikh i nizhnedevonskikh otlozheniy zapadnoy chasti podnyatiya Chernova [Silurian and Lower Devonian petroleum source rocks of the Chernov Ridge (Timan-Pechora Basin, Russia)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2017, vol. 12, no. 4, available at: http://www.ngtp.ru/rub/1/41_2017.pdf
DOI https://doi.org/10.17353/2070-5379/41_2017
References
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Geochemical research
Section editor – PhD in geology and mineralogy Bazhenova T.K.
Article # 36_2018 submitted on 07/23/2018 displayed on website on 10/19/2018
15 p.
pdf Petroleum geology and geochemistry of Labagan oil field (Timan-Pechora Petroleum Province)
The results of geochemical investigations of the Tournaisian and Artinskian sequences of the Labagan oil field (Timan-Pechora Petroleum Province) are presented. The reservoirs are represented by carbonate rocks of Carboniferous and Permian age, are characterized by good average reservoir properties; the type of reservoirs is crack-pore and second-pore. The oil from the Tournaisian Labagan oil field was generated by sapropelic organic matter, the accumulation of which took place in marine restrictive conditions. The oil of the Artinskian sections has been substantially biodegraded and the reconstruction of their genesis requires additional research.

Keywords: Carboniferous rocks, Lower Permian sequences, n-alkanes, isoprenoids, Labagan oil field, Timan-Pechora Petroleum Province.
article citation Ryabinkina N.N., Valyaeva O.V. Geologiya i geokhimiya neftey Labaganskogo neftyanogo mestorozhdeniya (Timano-Pechorskaya provintsiya) [Petroleum geology and geochemistry of Labagan oil field (Timan-Pechora Petroleum Province)]. Neftegazovaya Geologiya. Teoriya I Praktika, 2018, vol. 13, no. 4, available at: http://www.ngtp.ru/rub/2018/36_2018.html
DOI https://doi.org/10.17353/2070-5379/36_2018
References
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Valyaeva O.V., Ryabinkina N.N. Geokhimiya OV kamennougol'nykh bitumov Voyskogo mestorozhdeniya [Geochemistry of OM of coal bitumens of Voysk solid bitumen field]. Sovremennye problemy teoreticheskoy, eksperimental'noy i prikladnoy mineralogii (Yushkinskie chteniya - 2018): materialy mineralogicheskogo seminara s mezhdunarodnym uchastiem. – Syktyvkar: IG Komi NTs UrO RAN, 2018, p. 130–131.
Regional petroleum geology
Section editor – PhD in geology and mineralogy Makarevich V.N.
Article # 27_2018 submitted on 05/31/2018 displayed on website on 07/20/2018
14 p.
pdf Voysk solid bitumen field
We presented the results of detailed lithological and geochemical researches of the Voysk solid bitumen field of the Timan-Pechora Province, localized in Lower Visean sandstones of deltaic genesis. We considered the bitumens to the class of asphaltites by their elemental and group composition. By the methods of gas chromatography and chromato-mass spectrometry we confirmed that the bitumens had undergone intensive bacterial degradation. We studied the isotopic composition of carbon of both the bitumens and their individual fractions.

Keywords: natural bitumen, hydrocarbons-biomarkers, Lower Visean, carbon isotopy, Voysk bitumen field, Timan-Pechora Province.
article citation Valyaeva O.V., Ryabinkina N.N., Ryabinkin S.V. Voyskoe mestorozhdenie tverdykh bitumov [Voysk solid bitumen field]. Neftegazovaya Geologiya. Teoriya I Praktika, 2018, vol. 13, no. 3, available at: http://www.ngtp.ru/rub/4/27_2018.pdf
DOI https://doi.org/10.17353/2070-5379/27_2018
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Geochemical research
Section editor – PhD in geology and mineralogy Bazhenova T.K.
Article # 2_2017 submitted on 10/11/2016 displayed on website on 01/20/2017
21 p.
pdf  Composition and organic matter character of mudstones in the Lower Carboniferous of the Pechora basin
Lower Carboniferous terrigenous rocks include sandstones and aleurolite-argillaceous rocks transformed to different stages of katagenesis. We studied the sections from the outcrops in the Subpolar and Northern Urals, as well as from the wells of the Pre-Urals Foredeep. We revealed similarities and differences in mineral composition of the argillites and related organic matter, which is a very important observation concerning the prospective evaluation for further petroleum exploration in the Timan-Pechora Province.

Keywords: organic matter, mudstone, clastic sediments, post-sedimentation change, reservoir properties, Subpolar and Northern Urals, the Timan-Pechora petroleum Province.
article citation Ryabinkina N.N., Valyaeva O.V. Sostav i organicheskoe veshchestvo argillitov nizhnego karbona Pechorskogo basseyna [Composition and organic matter character of mudstones in the Lower Carboniferous of the Pechora basin]. Neftegazovaya Geologiya. Teoriya I Praktika, 2017, vol. 12, no. 1, available at: http://www.ngtp.ru/rub/1/2_2017.pdf
DOI https://doi.org/10.17353/2070-5379/2_2017
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