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Revisiting the clues to the origin of Devonian siliceous deposits of West Siberia: case study of the Severo-Varyoganskoye field

UDK: 553.98 (871.1)
DOI: 10.24887/0028-2448-2017-11-82-85
Key words: the Severo-Varyeganskoye field, the Devonian, biogenic silicites, reservoir, Domanic
Authors: A.I. Kudamanov, T.M. Karikh, M.V. Lebedev (TNNC LLC, RF, Tyumen)

The Severo-Varyoganskoye oil and gas condensate field is located on the territory of the Nizhnevartovsk region of the Khanty-Mansiysk Autonomous District. The results of well drilling in the Severo-Varyoganskoye field prove high potential for hydrocarbon production in the upper part of the Pre-Jurassic sequence (Devonian-Carboniferous), but, on the other hand, indicate extremely complex geological architecture of the target, which considerably impairs the effectiveness of seismic predictions. Structural and compositional characteristics of rocks by core, well section layering and correlation allow suggesting of an optional stratification for the upper section of the Pre-Jurassic sequence. The section with the core is divided into six strata of different lithologic composition. Now there are two most common points of view on the mechanism of formation of promising deposits of the Devonian-Carboniferous: a) weathering crust and, b) hydrothermal-metasomatic formations. Silicites and argillaceo-siliceous rocks were interpreted by the authors as primarily sedimentary, mainly of biogenic (planktonic) type, rarely mixed bio-chemogenic type. Mutual arrangement, close age and rock composition, common genesis features allow the West-Siberian silicites to be considered as the age and facial analogue of Domanic shales of the Russian platform. On the other hand, unlike the Russian platform Domanic, the West-Siberian platform “Domanic” was subjected to intensive hydrothermal – metasomatic impact as a result of activated volcanic processes, which could have probably resulted in organic matter decomposition and acid re-working of rocks.

References

1. Orlov A.A., Antonishin G.I., Ivaniv M.N., New data on the structure and petroleum potential of the Paleozoic deposits of the Middle Ob region (In Russ.), Izvestiya vuzov. Neft' i gaz, 1988, no. 4, pp. 3–5.

2. Arkhipov S.V., Borkun F.Ya., Pitkevich V.T. et al., Collectors of pre-Jurassic-Jurassic complex of North Varioganskaya Square (In Russ.), Geologiya nefti i gaza, 1989, no. 5, pp. 27–29.

3. Bochkarev V.S., Grishchenko A.I., Leshchenko V.E. et al., Paleozoic deposits – a new direction of exploration for oil and gas in the south-east of Western Siberia (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 1996, no. 1, pp. 2–8.

4. Shut'ko S.Yu., Kir'yanova N.I., New data on the contact zone of the platform cover and Paleozoic formations of the  North Varioganskoye and Varioganskoye fields (In Russ.), Geologiya nefti i gaza, 1989, no. 11, pp. 14–16.

5. Makov A.I., Taldykin V.A., Zakonomernosti razmeshcheniya zalezhey nefti i gaza v fundamente Zapadno-Sibirskoy plity na territorii KhMAO (Regularities in the location of oil and gas deposits in the basement of the West Siberian Plate in KhMAO), Proceedings of scientific and practical conference “Puti realizatsii neftegazovogo potentsiala KhMAO” (Ways of realization of oil and gas potential of KhMAO), Khanty-Mansiysk, 2003, Part 1, pp. 94–101.

6. Kirda N.P., Paromov I.V., Smirnova V.V. et al., Geologicheskoe razvitie i stroenie doyurskikh kompleksov tsentral'nykh i vostochnykh rayonov KhMAO, perspektivnye napravleniya poiskovo-otsenochnykh rabot na neft' i gaz (Geological development and structure of the pre-Jurassic complexes of the central and eastern regions of the Khanty-Mansiysk Autonomous Okrug, promising directions of prospecting and appraisal work for oil and gas), Collected papers “Perspektivy neftegazonosnosti paleozoyskikh otlozheniy na territorii Khanty-Mansiyskogo avtonomnogo okruga” (Oil and gas potential of Paleozoic deposits in the Khanty-Mansiysk Autonomous Okrug), Proceedings of Scientific and Practical Conference, 12 February, 2003, pp. 1–18.

7. Zubkov M.Yu., Fedorova T.A., Hydrothermal secondary collectors in black shale (In Russ.), Geologiya nefti i gaza, 1989, no. 6, pp. 26–30.

8. Zubkov M.Yu., Gidrotermal'nye selitsity – perspektivnyy neftegazopoiskovyy ob"ekt doyurskogo fundamenta Zapadno-Sibirskoy plity  (Hydrothermal Selitsites - a promising oil and gas prospect of the pre-Jurassic basement of the West Siberian Plate), Collected papers “Geologiya i neftegazonosnost' nizhnikh gorizontov chekhla Zapadno-Sibirskoy plity” (Geology and oil and gas content of the lower horizons of the cover of the West Siberian plate), Novosibirsk: Publ. of SNIIGGiMS, 1990, pp. 87–101.

9. Neruchev S.G., Uran i zhizn' v istorii Zemli (Uranus and life in the history of the Earth), St. Petersburg: Publ. of VNIGRI, 2007, 328 p.

10. Yudovich Ya.E., Ketris M.P., Geokhimiya chernykh slantsev (Geochemistry of black shale), Leningrad: Nauka Publ., 1988, 282 p.

 

The Severo-Varyoganskoye oil and gas condensate field is located on the territory of the Nizhnevartovsk region of the Khanty-Mansiysk Autonomous District. The results of well drilling in the Severo-Varyoganskoye field prove high potential for hydrocarbon production in the upper part of the Pre-Jurassic sequence (Devonian-Carboniferous), but, on the other hand, indicate extremely complex geological architecture of the target, which considerably impairs the effectiveness of seismic predictions. Structural and compositional characteristics of rocks by core, well section layering and correlation allow suggesting of an optional stratification for the upper section of the Pre-Jurassic sequence. The section with the core is divided into six strata of different lithologic composition. Now there are two most common points of view on the mechanism of formation of promising deposits of the Devonian-Carboniferous: a) weathering crust and, b) hydrothermal-metasomatic formations. Silicites and argillaceo-siliceous rocks were interpreted by the authors as primarily sedimentary, mainly of biogenic (planktonic) type, rarely mixed bio-chemogenic type. Mutual arrangement, close age and rock composition, common genesis features allow the West-Siberian silicites to be considered as the age and facial analogue of Domanic shales of the Russian platform. On the other hand, unlike the Russian platform Domanic, the West-Siberian platform “Domanic” was subjected to intensive hydrothermal – metasomatic impact as a result of activated volcanic processes, which could have probably resulted in organic matter decomposition and acid re-working of rocks.

References

1. Orlov A.A., Antonishin G.I., Ivaniv M.N., New data on the structure and petroleum potential of the Paleozoic deposits of the Middle Ob region (In Russ.), Izvestiya vuzov. Neft' i gaz, 1988, no. 4, pp. 3–5.

2. Arkhipov S.V., Borkun F.Ya., Pitkevich V.T. et al., Collectors of pre-Jurassic-Jurassic complex of North Varioganskaya Square (In Russ.), Geologiya nefti i gaza, 1989, no. 5, pp. 27–29.

3. Bochkarev V.S., Grishchenko A.I., Leshchenko V.E. et al., Paleozoic deposits – a new direction of exploration for oil and gas in the south-east of Western Siberia (In Russ.), Geologiya, geofizika i razrabotka neftyanykh i gazovykh mestorozhdeniy, 1996, no. 1, pp. 2–8.

4. Shut'ko S.Yu., Kir'yanova N.I., New data on the contact zone of the platform cover and Paleozoic formations of the  North Varioganskoye and Varioganskoye fields (In Russ.), Geologiya nefti i gaza, 1989, no. 11, pp. 14–16.

5. Makov A.I., Taldykin V.A., Zakonomernosti razmeshcheniya zalezhey nefti i gaza v fundamente Zapadno-Sibirskoy plity na territorii KhMAO (Regularities in the location of oil and gas deposits in the basement of the West Siberian Plate in KhMAO), Proceedings of scientific and practical conference “Puti realizatsii neftegazovogo potentsiala KhMAO” (Ways of realization of oil and gas potential of KhMAO), Khanty-Mansiysk, 2003, Part 1, pp. 94–101.

6. Kirda N.P., Paromov I.V., Smirnova V.V. et al., Geologicheskoe razvitie i stroenie doyurskikh kompleksov tsentral'nykh i vostochnykh rayonov KhMAO, perspektivnye napravleniya poiskovo-otsenochnykh rabot na neft' i gaz (Geological development and structure of the pre-Jurassic complexes of the central and eastern regions of the Khanty-Mansiysk Autonomous Okrug, promising directions of prospecting and appraisal work for oil and gas), Collected papers “Perspektivy neftegazonosnosti paleozoyskikh otlozheniy na territorii Khanty-Mansiyskogo avtonomnogo okruga” (Oil and gas potential of Paleozoic deposits in the Khanty-Mansiysk Autonomous Okrug), Proceedings of Scientific and Practical Conference, 12 February, 2003, pp. 1–18.

7. Zubkov M.Yu., Fedorova T.A., Hydrothermal secondary collectors in black shale (In Russ.), Geologiya nefti i gaza, 1989, no. 6, pp. 26–30.

8. Zubkov M.Yu., Gidrotermal'nye selitsity – perspektivnyy neftegazopoiskovyy ob"ekt doyurskogo fundamenta Zapadno-Sibirskoy plity  (Hydrothermal Selitsites - a promising oil and gas prospect of the pre-Jurassic basement of the West Siberian Plate), Collected papers “Geologiya i neftegazonosnost' nizhnikh gorizontov chekhla Zapadno-Sibirskoy plity” (Geology and oil and gas content of the lower horizons of the cover of the West Siberian plate), Novosibirsk: Publ. of SNIIGGiMS, 1990, pp. 87–101.

9. Neruchev S.G., Uran i zhizn' v istorii Zemli (Uranus and life in the history of the Earth), St. Petersburg: Publ. of VNIGRI, 2007, 328 p.

10. Yudovich Ya.E., Ketris M.P., Geokhimiya chernykh slantsev (Geochemistry of black shale), Leningrad: Nauka Publ., 1988, 282 p.

 



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