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Construction of an integrated seismic-geological model of the East Siberian Sea shelf

UDK: 553.98(26):550.834.072
DOI: 10.24887/0028-2448-2018-4-30-34
Key words: shelf, East Siberian Sea, tectonics, rifting, seismic stratigraphy, oil-and-gas potential
Authors: A.B. Popova (RN-SakhalinNIPImorneft LLC, RF, Moscow), O.S. Makhova (RN-SakhalinNIPImorneft LLC, RF, Moscow), N.A. Malyshev (Rosneft Oil Company, RF, Moscow), V.E. Verzhbitskiy (Rosneft Oil Company, RF, Moscow), V.V.Obmetko (Rosneft Oil Company, RF, Moscow), A.A.Borodulin (Rosneft Oil Company, RF, Moscow)

The complex seismic-geological model of the East Siberian Shelf was constructed on the basis of the analysis of the geological and geophysical material and 2D seismic data interpretation. The justification of the sedimentary cover age was made according to the geological data fr om the adjacent mainland, islands and wells, which are located on the island of Aion, the Lomonosov Ridge and in the offshore area of the US sector of the Chukchi Sea. Seismic stratigraphic tie of reflective horizons and transfer of correlation of main unconformities to the sedimentary cover of the East Siberian Shelf were performed. The regularities of the geological structure of the East Siberian Sea basins have been studied in order to assess the oil and gas potential. It is established that the sedimentary cover is composed mainly of the Mesozoic-Cenozoic terrigenous formations and the older (supposedly Upper Paleozoic?) complex of rocks is developed only in limited areas. Two clinoformal complexes of different age are distinguished in the Cenozoic part of the sedimentary section. It was established that their formation was controlled by the multi-stage evolution of the passive continental margin of the Eastern Arctic in relation with the development of deep ocean basins in the central part of the Arctic Ocean, sea level fluctuations and the Cenozoic uplift phases of the adjacent Arctic onshore. Based on the complex data interpretation, the history of the tectonic development of the studied region was restored. A two-phase rifting process in the Cretaceous-Cenozoic time is assumed.В  Only during the Oligocene-Pliocene (post-rift) stage the tectonic regime of the territory has been stabilized and the shelf edge close to the current one was formed. The main structural elements of the region were identified. The conclusions on the high prospectivity of the studied offshore area for the petroleum exploration were made. The oil and gas potential is mainly associated with Cretaceous and Cenozoic sequences. The region of the study is characterized by a large volume of sedimentary rocks, which entered the main zone of oil and gas generation.

References

1. Slobodin V.Ya., Kim B.I., Stepanova G.V., Kovalenko F.Ya., Raschlenenie razreza ayonskoy skvazhiny po novym biostratigraficheskim dannym (The sectional layering of the Aion well with new biostratigraphic data), Collected papers “Stratigrafiya i paleontologiya mezo-kaynozoya Sovetskoy Arktiki” (Stratigraphy and paleontology of the Mesozoic-Cenozoic of the Soviet Arctic), Leningrad: Publ. of Sevmorgeologiya, 1990, pp. 43–58.

2. Backman J., Moran K., McInroy D.B. et al., Sites M0001–M0004, Proceedings of the Integrated Ocean Drilling Program, 2006, V. 302, DOI:10.2204/iodp.proc.302.104.2006

3. Poirier A., Hillaire-Marcel C., Improved Os-isotope stratigraphy of the Arctic Ocean, Geophysical research letters, 2011, V. 38, L14607, DOI:10.1029/2011GL047953.

4. Sherwood K.W., Johnson P.P., Craig J.D., Structure and stratigraphy of the Hanna Trough, U.S. Chukcui Shelf, In “Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic margin and adjacent landmasses”: Boulder, Colorado, Geological Society of America, 2002, Special Paper 360, pp. 39–66.

5. Mickey M.B., Haga H., Micropaleontology of selected wells and seismic shotholes, Northern Alaska: U.S. Geological Survey Open File Report 2006-1055.

6. Dpachev C.C., Elistratov A.V., Cavoctin L.A., Structure and seismostratigraphy of the East Siberian Sea shelf along the Indigirka Bay-Jannetta Island seismic profile (In Russ.), Doklady RAN = Doklady Earth Sciences, 2001, V. 377, no. 4, pp. 521–525.

7. Kuzmichev A.B., Wh ere does the South Anyui suture go in the New Siberian islands and Laptev Sea: Implications for the Amerasia basin origin, Tectonophysics, 2009, V. 463, pp. 86–108.

8. Katkov S.M., Strickland A., Miller E.L., Toro J., Age of granite batholiths in the Anyui-Chukotka foldbelt (In Russ.), Doklady RAN = Doklady Earth Sciences, 2007, V. 414, no. 2, pp. 219–222.

9. Miller E.L., Verzhbitsky V.E., Structural studies near Pevek, Russia: Implications for formation of the East Siberian Shelf and Makarov Basin of the Arctic Ocean, Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov, EGU Stephan Mueller Publication Series, 2009, V. 4, pp. 223–241, URL: www.stephan-mueller-spec-publ-ser.net/4/223/2009/

10. Sokolov S.D., Bondarenko G.Ye., Layer P.W., Kravchenko-Berezhnoy I.R., South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events, Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov, European Geosciences Union, Stephan Mueller Publication Series, 2009, V. 4, pp. 201–221.

11. Verzhbitsky V.E., Sokolov S.D., Frantzen E.M. et al., The South Chukchi Sedimentary Basin (Chukchi Sea, Russian Arctic): Age, structural pattern, and hydrocarbon potential, Tectonics and sedimentation: Implications for petroleum systems: AAPG Memoir 100, 2012, pp. 267–290.

12. Kuz'michev A.B., Solov'ev A.V., Gonikberg V.E. et al., Mesozoic syncollision siliciclastic sediments of the Bols'shoi Lyakhov Island (New Siberian Islands) (In Russ.), Stratigrafiya. Geologicheskaya korrelyatsiya = Stratigraphy and Geological Correlation, 2006, V. 14, no. 1, pp. 33–53.

13. Drachev S.S., Malyshev N.A., Nikishin A.M., Tectonic history and petroleum geology of the Russian Arctic Shelves: an overview, In “Petroleum Geology: From Mature Basins to New Frontiers”, Proceedings of the 7th Petroleum Geology Conference: Geological Society London, 2010, V. 7, pp. 591–619, DOI: 10.1144/0070591.вЃВ 

The complex seismic-geological model of the East Siberian Shelf was constructed on the basis of the analysis of the geological and geophysical material and 2D seismic data interpretation. The justification of the sedimentary cover age was made according to the geological data fr om the adjacent mainland, islands and wells, which are located on the island of Aion, the Lomonosov Ridge and in the offshore area of the US sector of the Chukchi Sea. Seismic stratigraphic tie of reflective horizons and transfer of correlation of main unconformities to the sedimentary cover of the East Siberian Shelf were performed. The regularities of the geological structure of the East Siberian Sea basins have been studied in order to assess the oil and gas potential. It is established that the sedimentary cover is composed mainly of the Mesozoic-Cenozoic terrigenous formations and the older (supposedly Upper Paleozoic?) complex of rocks is developed only in limited areas. Two clinoformal complexes of different age are distinguished in the Cenozoic part of the sedimentary section. It was established that their formation was controlled by the multi-stage evolution of the passive continental margin of the Eastern Arctic in relation with the development of deep ocean basins in the central part of the Arctic Ocean, sea level fluctuations and the Cenozoic uplift phases of the adjacent Arctic onshore. Based on the complex data interpretation, the history of the tectonic development of the studied region was restored. A two-phase rifting process in the Cretaceous-Cenozoic time is assumed.В  Only during the Oligocene-Pliocene (post-rift) stage the tectonic regime of the territory has been stabilized and the shelf edge close to the current one was formed. The main structural elements of the region were identified. The conclusions on the high prospectivity of the studied offshore area for the petroleum exploration were made. The oil and gas potential is mainly associated with Cretaceous and Cenozoic sequences. The region of the study is characterized by a large volume of sedimentary rocks, which entered the main zone of oil and gas generation.

References

1. Slobodin V.Ya., Kim B.I., Stepanova G.V., Kovalenko F.Ya., Raschlenenie razreza ayonskoy skvazhiny po novym biostratigraficheskim dannym (The sectional layering of the Aion well with new biostratigraphic data), Collected papers “Stratigrafiya i paleontologiya mezo-kaynozoya Sovetskoy Arktiki” (Stratigraphy and paleontology of the Mesozoic-Cenozoic of the Soviet Arctic), Leningrad: Publ. of Sevmorgeologiya, 1990, pp. 43–58.

2. Backman J., Moran K., McInroy D.B. et al., Sites M0001–M0004, Proceedings of the Integrated Ocean Drilling Program, 2006, V. 302, DOI:10.2204/iodp.proc.302.104.2006

3. Poirier A., Hillaire-Marcel C., Improved Os-isotope stratigraphy of the Arctic Ocean, Geophysical research letters, 2011, V. 38, L14607, DOI:10.1029/2011GL047953.

4. Sherwood K.W., Johnson P.P., Craig J.D., Structure and stratigraphy of the Hanna Trough, U.S. Chukcui Shelf, In “Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic margin and adjacent landmasses”: Boulder, Colorado, Geological Society of America, 2002, Special Paper 360, pp. 39–66.

5. Mickey M.B., Haga H., Micropaleontology of selected wells and seismic shotholes, Northern Alaska: U.S. Geological Survey Open File Report 2006-1055.

6. Dpachev C.C., Elistratov A.V., Cavoctin L.A., Structure and seismostratigraphy of the East Siberian Sea shelf along the Indigirka Bay-Jannetta Island seismic profile (In Russ.), Doklady RAN = Doklady Earth Sciences, 2001, V. 377, no. 4, pp. 521–525.

7. Kuzmichev A.B., Wh ere does the South Anyui suture go in the New Siberian islands and Laptev Sea: Implications for the Amerasia basin origin, Tectonophysics, 2009, V. 463, pp. 86–108.

8. Katkov S.M., Strickland A., Miller E.L., Toro J., Age of granite batholiths in the Anyui-Chukotka foldbelt (In Russ.), Doklady RAN = Doklady Earth Sciences, 2007, V. 414, no. 2, pp. 219–222.

9. Miller E.L., Verzhbitsky V.E., Structural studies near Pevek, Russia: Implications for formation of the East Siberian Shelf and Makarov Basin of the Arctic Ocean, Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov, EGU Stephan Mueller Publication Series, 2009, V. 4, pp. 223–241, URL: www.stephan-mueller-spec-publ-ser.net/4/223/2009/

10. Sokolov S.D., Bondarenko G.Ye., Layer P.W., Kravchenko-Berezhnoy I.R., South Anyui suture: tectono-stratigraphy, deformations, and principal tectonic events, Geology, geophysics and tectonics of Northeastern Russia: a tribute to Leonid Parfenov, European Geosciences Union, Stephan Mueller Publication Series, 2009, V. 4, pp. 201–221.

11. Verzhbitsky V.E., Sokolov S.D., Frantzen E.M. et al., The South Chukchi Sedimentary Basin (Chukchi Sea, Russian Arctic): Age, structural pattern, and hydrocarbon potential, Tectonics and sedimentation: Implications for petroleum systems: AAPG Memoir 100, 2012, pp. 267–290.

12. Kuz'michev A.B., Solov'ev A.V., Gonikberg V.E. et al., Mesozoic syncollision siliciclastic sediments of the Bols'shoi Lyakhov Island (New Siberian Islands) (In Russ.), Stratigrafiya. Geologicheskaya korrelyatsiya = Stratigraphy and Geological Correlation, 2006, V. 14, no. 1, pp. 33–53.

13. Drachev S.S., Malyshev N.A., Nikishin A.M., Tectonic history and petroleum geology of the Russian Arctic Shelves: an overview, In “Petroleum Geology: From Mature Basins to New Frontiers”, Proceedings of the 7th Petroleum Geology Conference: Geological Society London, 2010, V. 7, pp. 591–619, DOI: 10.1144/0070591.вЃВ 


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