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One-dimensional petroleum system modeling (basin modeling) in a well section of Tolonskoye field in the Republic of Sakha (Yakutia)

UDK: 553.98.061.12/.17
DOI: 10.24887/0028-2448-2020-5-31-35
Key words: Vilyui hemisyneclise, Tolonskoye field, basin modeling, petroleum system modeling, source rock
Authors: M.O. Fedorovich (A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS, RF, Novosibirsk), A.Yu. Kosmacheva (A.A. Trofimuk Institute of Petroleum Geology and Geophysics, Siberian Branch of RAS, RF, Novosibirsk), N.V. Pospeeva (Siberian Research Institute of Geology, Geophysics and Mineral Resources, RF, Novosibirsk)

The paper is aimed at the one-dimensional petroleum system modeling in a well section of the Tolonskoye gas-condensate field. Tectonically, it is confined to the Khapchagai megalithic bank located in the central part of the Vilyui hemisyneclise. The modeling identifies burial and thermal history of the sediments in the Paleozoic, Mesozoic and Cenozoic, quantitive evaluation of generation power and oil-window- and gas-window-entry time of the source rocks. According to the present research, the Kuonam source rock reached up to the oil window 449 Ma in the Katian age and gas window 410 Ma in the Pragian age. The Permian source rock top reached up to the oil window 249 Ma in the Olenekian age. The Permian source rock middle did to the gas window 258 Ma in the Wuchiapingian age. The Kuonam source rock had already been beyond the oil and gas windows by ending the sedimentation of the Nedzhelin and Monom seal rocks for the Upper Permian and Lower Triassic reservoirs. There was consequently no appropriate environment for the hydrocarbon accumulations generated by marine organic matter to be preserved. The Permian source rock top and middle are found to be in the oil and gas windows at the present time, respectively. The hydrocarbon accumulations principally generated by terrestrial organic matter can therefore be in the Upper Permian and Lower Triassic reservoirs. Maximum temperature values and rapid change in organic matter maturity in the Late Permian and Early Triassic imply trap rocks in the sediments. Generation power of the Kuonam source rock and Permian source rock bottom is completely exhausted. The Permian source rock top, by comparison, is of significant generation capability. The generation balance of the source rocks is 18.942 BT of hydrocarbons (hydrocarbon equivalent), with the Permian source rock contribution being essential. The remaining source rock potential is 5.187 BT of hydrocarbons (hydrocarbon equivalent). Complying with the initial commercial reserves of the Tolonskoye field the reservoir balance is up to 0.7 % in relation to the generation balance.

Acknowledgement. The reported study was funded by RFBR, project number 19-35-90039.

References

1. Kontorovich A.E., Leno-Vilyuyskiy basseyn (Lena-Vilyui basin), Neftegazonosnye basseyny i regiony Sibiri (Oil and gas basins and regions of Siberia), Novosibirsk: Publ. of SB of  RAS, 1994, V. 4, 107 p.

2. Antsiferov A.S. et al., Geologiya nefti i gaza Sibirskoy platformy (Geology of oil and gas of the Siberian platform), Moscow: Nedra Publ., 1981, 552 p.

3. Kontorovich A.E.  et al., Neftegazogeologicheskoe rayonirovanie Sibirskoy platformy (utochnennaya versiya) (Oil and gas-geological zoning of the Siberian platform (updated version)), Collected papers “Nedropol'zovanie. Gornoe delo. Napravleniya i tekhnologii poiska, razvedki i razrabotki mestorozhdeniy poleznykh iskopaemykh. Geoekologiya” (Subsoil use. Mining. Directions and technologies for the search, exploration and development of mineral deposits. Geoecology),  Proceedings of International Scientific Conference “Interekspo GEO-Sibir'-2017”, Novosibirsk, 17–21 April 2017, Part 1, Novosibirsk: Publ. of SGUGiT, 2017, pp. 57–64.

4. Devyatov V.P., Trushchelev A.M., Grinenko V.S., Triassic deposit stratigraphy of the verkhoyansk facial region (Central Yakutiya) (In Russ.), Geologiya i mineral'no-syr'evye resursy Sibiri, 2012, no. 2, pp. 24–37.

5. Tomilova N.N., Yurova M.P., Nizhnetriasovye vulkanogennye lovushki gaza Yakutii: genezis, stroenie kollektora, osobennosti (Lower Triassic volcanogenic gas traps in Yakutia: genesis, reservoir structure, features), Collected papers “Problemy resursnogo obespecheniya gazodobyvayushchikh rayonov Rossii do 2030 goda (Problems of resource provision of gas producing regions of Russia until 2030), Moscow: Publ. of Gazprom VNIIGAZ, 2012, pp. 208–216.

6.  Bogorodskaya L.I., Kontorovich A.E., Larichev A.I., Kerogen: metody izucheniya, geokhimicheskaya interpretatsiya (Kerogen: methods of study, geochemical interpretation), Novosibirsk: Publ. of SB of RAS, 2005, 254 p.

7. Parfenova T.M.  et al., Kerogen from the Cambrian deposits of the Kuonamka Formation (northeastern Siberian Platform) (In Russ.), Geologiya i geofizika = Russian Geology and Geophysics, 2010, V. 51, no. 3, pp. 353–363.

8. Fomin A.N.  et al., Prognoz zon generatsii zhidkikh i gazoobraznykh uglevodorodov v tsentral'noy chasti Vilyuyskoy sineklizy (na primere sverkhglubokoy skvazhiny Srednevilyuyskaya 27) (Prediction of liquid and gaseous hydrocarbons generation areas in the central part of Viluy syneclise (through the example OF Srednevilyuiskaya-27 superdeep well)), Collected papers “Nedropol'zovanie. Gornoe delo. Napravleniya i tekhnologii poiska, razvedki i razrabotki mestorozhdeniy poleznykh iskopaemykh. Geoekologiya” (Subsoil use. Mining. Directions and technologies for the search, exploration and development of mineral deposits. Geoecology),  Proceedings of International Scientific Conference “Interekspo GEO-Sibir'-2016”, Part 1, Novosibirsk, 18–22 April 2016, Novosibirsk: Publ. of SGUGiT, 2016, pp. 26–30.

9. URL: https://nedradv.ru/nedradv/ru/find_place/?obj=c1aa75568145898­d9a4fe5dae70b61a2

10. PetroMod petroleum systems modeling, Schlumberger Information Solutions, 2011, 256 p.

11. Kutovaya A. et al., Thermal effects of magmatism on surrounding sediments and petroleum systems in the northern offshore Taranaki Basin, New Zealand, Geosciences, 2019, V. 9, URL: https://www.mdpi.com/2076-3263/9/7/288/htm

12. Polyakova I.D., Bogorodskaya L.I., Soboleva E.I., Transformations of the organic matter of coal deposits of the Vilyui syneclise at great depths (In Russ.), Geokhimiya neftegazonosnykh otlozheniy Sibiri, 1991, pp. 48–57.

13. Tissot B.P., Welte D.H., Petroleum formation and occurrence, Berlin: Springer, 1984, 699 p.

The paper is aimed at the one-dimensional petroleum system modeling in a well section of the Tolonskoye gas-condensate field. Tectonically, it is confined to the Khapchagai megalithic bank located in the central part of the Vilyui hemisyneclise. The modeling identifies burial and thermal history of the sediments in the Paleozoic, Mesozoic and Cenozoic, quantitive evaluation of generation power and oil-window- and gas-window-entry time of the source rocks. According to the present research, the Kuonam source rock reached up to the oil window 449 Ma in the Katian age and gas window 410 Ma in the Pragian age. The Permian source rock top reached up to the oil window 249 Ma in the Olenekian age. The Permian source rock middle did to the gas window 258 Ma in the Wuchiapingian age. The Kuonam source rock had already been beyond the oil and gas windows by ending the sedimentation of the Nedzhelin and Monom seal rocks for the Upper Permian and Lower Triassic reservoirs. There was consequently no appropriate environment for the hydrocarbon accumulations generated by marine organic matter to be preserved. The Permian source rock top and middle are found to be in the oil and gas windows at the present time, respectively. The hydrocarbon accumulations principally generated by terrestrial organic matter can therefore be in the Upper Permian and Lower Triassic reservoirs. Maximum temperature values and rapid change in organic matter maturity in the Late Permian and Early Triassic imply trap rocks in the sediments. Generation power of the Kuonam source rock and Permian source rock bottom is completely exhausted. The Permian source rock top, by comparison, is of significant generation capability. The generation balance of the source rocks is 18.942 BT of hydrocarbons (hydrocarbon equivalent), with the Permian source rock contribution being essential. The remaining source rock potential is 5.187 BT of hydrocarbons (hydrocarbon equivalent). Complying with the initial commercial reserves of the Tolonskoye field the reservoir balance is up to 0.7 % in relation to the generation balance.

Acknowledgement. The reported study was funded by RFBR, project number 19-35-90039.

References

1. Kontorovich A.E., Leno-Vilyuyskiy basseyn (Lena-Vilyui basin), Neftegazonosnye basseyny i regiony Sibiri (Oil and gas basins and regions of Siberia), Novosibirsk: Publ. of SB of  RAS, 1994, V. 4, 107 p.

2. Antsiferov A.S. et al., Geologiya nefti i gaza Sibirskoy platformy (Geology of oil and gas of the Siberian platform), Moscow: Nedra Publ., 1981, 552 p.

3. Kontorovich A.E.  et al., Neftegazogeologicheskoe rayonirovanie Sibirskoy platformy (utochnennaya versiya) (Oil and gas-geological zoning of the Siberian platform (updated version)), Collected papers “Nedropol'zovanie. Gornoe delo. Napravleniya i tekhnologii poiska, razvedki i razrabotki mestorozhdeniy poleznykh iskopaemykh. Geoekologiya” (Subsoil use. Mining. Directions and technologies for the search, exploration and development of mineral deposits. Geoecology),  Proceedings of International Scientific Conference “Interekspo GEO-Sibir'-2017”, Novosibirsk, 17–21 April 2017, Part 1, Novosibirsk: Publ. of SGUGiT, 2017, pp. 57–64.

4. Devyatov V.P., Trushchelev A.M., Grinenko V.S., Triassic deposit stratigraphy of the verkhoyansk facial region (Central Yakutiya) (In Russ.), Geologiya i mineral'no-syr'evye resursy Sibiri, 2012, no. 2, pp. 24–37.

5. Tomilova N.N., Yurova M.P., Nizhnetriasovye vulkanogennye lovushki gaza Yakutii: genezis, stroenie kollektora, osobennosti (Lower Triassic volcanogenic gas traps in Yakutia: genesis, reservoir structure, features), Collected papers “Problemy resursnogo obespecheniya gazodobyvayushchikh rayonov Rossii do 2030 goda (Problems of resource provision of gas producing regions of Russia until 2030), Moscow: Publ. of Gazprom VNIIGAZ, 2012, pp. 208–216.

6.  Bogorodskaya L.I., Kontorovich A.E., Larichev A.I., Kerogen: metody izucheniya, geokhimicheskaya interpretatsiya (Kerogen: methods of study, geochemical interpretation), Novosibirsk: Publ. of SB of RAS, 2005, 254 p.

7. Parfenova T.M.  et al., Kerogen from the Cambrian deposits of the Kuonamka Formation (northeastern Siberian Platform) (In Russ.), Geologiya i geofizika = Russian Geology and Geophysics, 2010, V. 51, no. 3, pp. 353–363.

8. Fomin A.N.  et al., Prognoz zon generatsii zhidkikh i gazoobraznykh uglevodorodov v tsentral'noy chasti Vilyuyskoy sineklizy (na primere sverkhglubokoy skvazhiny Srednevilyuyskaya 27) (Prediction of liquid and gaseous hydrocarbons generation areas in the central part of Viluy syneclise (through the example OF Srednevilyuiskaya-27 superdeep well)), Collected papers “Nedropol'zovanie. Gornoe delo. Napravleniya i tekhnologii poiska, razvedki i razrabotki mestorozhdeniy poleznykh iskopaemykh. Geoekologiya” (Subsoil use. Mining. Directions and technologies for the search, exploration and development of mineral deposits. Geoecology),  Proceedings of International Scientific Conference “Interekspo GEO-Sibir'-2016”, Part 1, Novosibirsk, 18–22 April 2016, Novosibirsk: Publ. of SGUGiT, 2016, pp. 26–30.

9. URL: https://nedradv.ru/nedradv/ru/find_place/?obj=c1aa75568145898­d9a4fe5dae70b61a2

10. PetroMod petroleum systems modeling, Schlumberger Information Solutions, 2011, 256 p.

11. Kutovaya A. et al., Thermal effects of magmatism on surrounding sediments and petroleum systems in the northern offshore Taranaki Basin, New Zealand, Geosciences, 2019, V. 9, URL: https://www.mdpi.com/2076-3263/9/7/288/htm

12. Polyakova I.D., Bogorodskaya L.I., Soboleva E.I., Transformations of the organic matter of coal deposits of the Vilyui syneclise at great depths (In Russ.), Geokhimiya neftegazonosnykh otlozheniy Sibiri, 1991, pp. 48–57.

13. Tissot B.P., Welte D.H., Petroleum formation and occurrence, Berlin: Springer, 1984, 699 p.


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