Application of spatial offlap break trajectory analysis of the North Chukchi Trough clinoforms for hydrocarbon evaluation

Skaryatin, M.V.; Llc, Rf RN-Exploration; Stavitskaya, V.N.; Mazaeva, I.V.; Zaytseva, S.A.; Batalova, A.A.; Moiseeva, R. Kh.; Vinnikovskaya, E.V.; Bulgakova, E. A.; Малышев, Н. А.; Verzhbitskiy, Vladimir; Obmetko, V. V.; Borodulin, A. A.

doi:10.24887/0028-2448-2021-2-40-45

Cited by 2 publications

(9 citation statements)

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“…After reviewing present day concepts of sedimentary stratigraphic architecture, we identified the following regional unconformities reflected by seismic data, which are agreeable with most geologic models: the Middle Brookian Unconformity (MBU) associated with the base of Cenozoic sediments, the Intra-Eocene Unconformity (InEoU) or High Amplitude Seismic Reflectors (HASR), two unconformities in the upper part of the Oligocene-Rupelian-Chattian unconformity or Erosional Surface (ES) and Aquitanian transgressive surface (Aq1) (Freiman et al 2019;Skaryatin et al 2020Skaryatin et al , 2021.…”

Section: Geological Settingsmentioning

confidence: 79%

“…In their recent work, Rosneft geoscientists have applied an integrated approach comprising sequence stratigraphy, the method of geologic analogies, and the tie to wells Popcorn-1 and Ayon-1 (for the Cenozoic interval of the section) (Skaryatin et al 2020(Skaryatin et al , 2021.…”

Section: Geological Settingsmentioning

confidence: 99%

“…InEoU (Skaryatin et al 2020(Skaryatin et al , 2021 or HASR (Freiman et al 2019)-the horizon marks the stage of a large-scale sea transgression in the region. The transgression was induced by the completion of rifting in the Makarov-Podvodnikov Basin and the onset of long-lived post-rift subsidence that affected the northern margin of the East Siberian shelf.…”

Section: Geological Settingsmentioning

confidence: 99%

“…The transgression was induced by the completion of rifting in the Makarov-Podvodnikov Basin and the onset of long-lived post-rift subsidence that affected the northern margin of the East Siberian shelf. Global warming that commenced in the Thanetian age and attained maximum expression during the Early Eocene (PETM-Paleocene-Eocene Thermal Maximum) and the connection established between the Chukchi and West Siberian Seas could have also influenced the further expansion of the paleobasin's area (Skaryatin et al 2020(Skaryatin et al , 2021.…”

Section: Geological Settingsmentioning

confidence: 99%

“…The next prominent stage of flooding is associated with the Chattian-Aquitanian transgression (Aq1), as indicated by the presence of marine deposits of the Ust'-Omolon Formation in well Ayon-1 (Skaryatin et al 2020(Skaryatin et al , 2021. It was preceded by the Rupelian-Chattian hiatus associated with the ES unconformity (Freiman et al 2019), erosion, and cooling (Oi-1).…”

Section: Geological Settingsmentioning

confidence: 99%

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Peculiarities of Tertiary petroleum systems evolution under prograding shelf environment on the continental margin of the East Siberian Sea

Мустаев

Лавренова

Kerimov

et al. 2021

J Petrol Explor Prod Technol

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The upper part of the sedimentary cover within the East Siberian Sea shelf comprises Cenozoic clinoform deposits, which accumulated in passive continental margin settings. In the Eastern Arctic, the productivity of clinoform deposits has been proved on the Alaska North Slope and in the Beaufort–Mackenzie Basin. Considering that Cenozoic clinoform deposits are widely represented in the Russian part of the Eastern Arctic, they undoubtedly attract considerable interest from the standpoint of hydrocarbons prospecting. However, despite increasingly closer attention to this interval of the sedimentary section, it is still poorly understood due to its complicated geology. The lack of drilled wells in the region imposes a considerable limitation on an understanding of sedimentary basins development. In this situation, geophysical data become the primary source of information for building geologic models in the Russian sector of the Eastern Arctic. An assessment of hypothetical Cenozoic petroleum systems of the East Siberian Sea is the main objective of this paper. It is to be said research performed under high uncertainty of input data. The results obtained from basin analysis and numerical modeling indicate the possibility that an active petroleum system may exist in the Cenozoic sedimentary wedge of the East Siberian Sea. The outlook for the clinoform complex largely depends on the source rock maturity, i.e., higher prospects should be expected in areas where the prograding wedge has maximum thickness. Considering all factors (reservoir quality prediction, proximity to a hydrocarbon kitchen, timing), the Eocene–Oligocene part of the sedimentary section appears to offer the greatest promise within the study area. Here, predominantly oil accumulations may be expected at a depth of 2.5–3.5 km below sea bottom.

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Section: Geological Settingsmentioning

confidence: 79%

Section: Geological Settingsmentioning

confidence: 99%