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Estimation of the Impact of Basement Heterogeneity on Thermal History Reconstruction: The Western Siberian Basin

1
Center for Hydrocarbon Recovery, Skolkovo Institute of Science and Technology, 30/1 Bolshoy Boulevard, 121205 Moscow, Russia
2
TotalEnergies Research and Development, Lesnaya, 125196 Moscow, Russia
*
Author to whom correspondence should be addressed.
Academic Editor: Thomas Gentzis
Minerals 2022, 12(1), 97; https://doi.org/10.3390/min12010097
Received: 11 November 2021 / Revised: 9 January 2022 / Accepted: 11 January 2022 / Published: 14 January 2022
Some of the simplifying assumptions frequently used in basin modelling may adversely impact the quality of the constructed models. One such common assumption consists of using a laterally homogeneous crustal basement, despite the fact that lateral variations in its properties may significantly affect the thermal evolution of the model. We propose a new method for the express evaluation of the impact of the basement’s heterogeneity on thermal history reconstruction and on the assessment of maturity of the source rock. The proposed method is based on reduced-rank inversion, aimed at a simultaneous reconstruction of the petrophysical properties of the heterogeneous basement and of its geometry. The method uses structural information taken from geological maps of the basement and gravity anomaly data. We applied our method to a data collection from Western Siberia and carried out a two-dimensional reconstruction of the evolution of the basin and of the lithosphere. We performed a sensitivity analysis of the reconstructed basin model to assess the effect of uncertainties in the basement’s density and its thermal conductivity for the model’s predictions. The proposed method can be used as an express evaluation tool to assess the necessity and relevance of laterally heterogeneous parametrisations prior to a costly three-dimensional full-rank basin modelling. The method is generally applicable to extensional basins except for salt tectonic provinces. View Full-Text
Keywords: basin modelling; thermal history reconstruction; heterogeneous basement; source rock maturity; gravity anomaly; Western Siberian Basin basin modelling; thermal history reconstruction; heterogeneous basement; source rock maturity; gravity anomaly; Western Siberian Basin
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MDPI and ACS Style

Peshkov, G.A.; Chekhonin, E.M.; Pissarenko, D.V. Estimation of the Impact of Basement Heterogeneity on Thermal History Reconstruction: The Western Siberian Basin. Minerals 2022, 12, 97. https://doi.org/10.3390/min12010097

AMA Style

Peshkov GA, Chekhonin EM, Pissarenko DV. Estimation of the Impact of Basement Heterogeneity on Thermal History Reconstruction: The Western Siberian Basin. Minerals. 2022; 12(1):97. https://doi.org/10.3390/min12010097

Chicago/Turabian Style

Peshkov, Georgy A., Evgeny M. Chekhonin, and Dimitri V. Pissarenko. 2022. "Estimation of the Impact of Basement Heterogeneity on Thermal History Reconstruction: The Western Siberian Basin" Minerals 12, no. 1: 97. https://doi.org/10.3390/min12010097

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