TY - JOUR

T1 - Kinetic characteristics of kerogens in the Kuonamka complex, lower and middle Cambrian of the Siberian Platform

AU - Бурштейн, Лев Маркович

AU - Дешин, Алексей Андреевич

AU - Парфенова, Татьяна Михайловна

AU - Ярославцева, Екатерина

AU - Козырев, Александр

AU - Сафронов, Павел Иванович

N1 - The study was supported by the state basic research program (project No. FWZZ-2022-0011) “Organic geochemistry of oil source rocks and naphthides, geochemical prerequisites for petroleum potential of Proterozoic and Phanerozoic sedimentary basins of Siberia and the Republic of Sakha (Yakutia), including the Arctic zone” and (project No. FWZZ-2022-0008) “Digital geological and geophysical models of the Lena–Tunguska and Lena–Vilyui petroleum provinces, analysis of the patterns of location of oil and gas fields, assessment of the prospects for oil and gas content in the main Upper Proterozoic and Phanerozoic source rocks complexes, including Vendian and Cambrian carbonate horizons with difficult-to-recover resources, study of the influence of trap intrusions on oil and gas content”. Публикация для корректировки.

PY - 2024/1

Y1 - 2024/1

N2 - The kinetic characteristics of kerogen (activation energy and frequency factor distributions of the initial generative potential) determine the dynamics of naphthide generation during catagenesis. In the previous studies on quantitative modeling of naphthidogenesis in the Kuonamka source rocks, the kinetic characteristics were taken by analogy with the known kerogens from other complexes and provinces. It seems relevant to determine the effective kinetic characteristics of the kerogen from the Kuonamka source rocks from experimental data. To estimate the kinetic parameters, specialized multi-rate pyrolysis studies were performed. The variations in pyrolysis data was reported to be presumably associated with the conditions of kerogen and source rock formation during accumulation and diagenesis of organic matter. The effect of carbonate and organic carbon contents on the temperature range of the second pyrolysis peak is recorded. Reconstruction of the average (effective) kinetic characteristics of kerogens from the Kuonamka source rock, was conducted using data on kerogens from Serkinsky-5 and 10 and Tit-Ebya-6 wells, which are less degraded than kerogens from Ust’-Maiskaya-366 well and prob-ably attained the early mesocatagenesis grades. The current average effective kinetic characteristics of kerogen were estimated and cor-rected for the possible partial degradation of reference samples. The obtained effective kinetic models of kerogen are compared with models of kerogens of various genetic types known from the literature. The estimated effective kinetic characteristics of kerogens or Menil-1 and Type B kerogens with similar characteristics are to be taken, as a first approximation, in regional historical-genetic (basin) modeling of naphthide generation in the Kuonamka source rock.

AB - The kinetic characteristics of kerogen (activation energy and frequency factor distributions of the initial generative potential) determine the dynamics of naphthide generation during catagenesis. In the previous studies on quantitative modeling of naphthidogenesis in the Kuonamka source rocks, the kinetic characteristics were taken by analogy with the known kerogens from other complexes and provinces. It seems relevant to determine the effective kinetic characteristics of the kerogen from the Kuonamka source rocks from experimental data. To estimate the kinetic parameters, specialized multi-rate pyrolysis studies were performed. The variations in pyrolysis data was reported to be presumably associated with the conditions of kerogen and source rock formation during accumulation and diagenesis of organic matter. The effect of carbonate and organic carbon contents on the temperature range of the second pyrolysis peak is recorded. Reconstruction of the average (effective) kinetic characteristics of kerogens from the Kuonamka source rock, was conducted using data on kerogens from Serkinsky-5 and 10 and Tit-Ebya-6 wells, which are less degraded than kerogens from Ust’-Maiskaya-366 well and prob-ably attained the early mesocatagenesis grades. The current average effective kinetic characteristics of kerogen were estimated and cor-rected for the possible partial degradation of reference samples. The obtained effective kinetic models of kerogen are compared with models of kerogens of various genetic types known from the literature. The estimated effective kinetic characteristics of kerogens or Menil-1 and Type B kerogens with similar characteristics are to be taken, as a first approximation, in regional historical-genetic (basin) modeling of naphthide generation in the Kuonamka source rock.

KW - Cambrian

KW - Inikan Formation

KW - Kuonamka Formation

KW - kerogen

KW - kinetic characteristics of kerogen

UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85184215553&origin=inward&txGid=f9c1277b7278134fd546f41f493b2aec

UR - https://www.mendeley.com/catalogue/0a760490-681b-3e50-aff8-6ca0fb7132bb/

U2 - 10.2113/RGG20234673

DO - 10.2113/RGG20234673

M3 - Article

VL - 65

SP - 111

EP - 125

JO - Russian Geology and Geophysics

JF - Russian Geology and Geophysics

SN - 1068-7971

IS - 1

ER -