Kinetic analysis of hydrocarbon generation based on saline lacustrine source rock and kerogen samples in the western Qaidam Basin, China

Xu, Li; Shi, Yajun; Chen, Xiao; Chuan-zhi, Wan; Wang, Jiangong

doi:10.1007/s13146-018-0462-x

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…The parameter distributions of GPI o and HI o were determined according to the HI classification criteria of kerogen. Due to the similar depositional environment, the parameter distributions of θ 2 , β 2 , θ 1 and β 1 were determined by analogy with the thermal simulation analysis data of the Tertiary source rocks in western Qaidam Basin (Chen & Zhang, 2019; Song, Cao, et al, 2021; Song, Wang, et al, 2021; Xu et al, 2019). After 6000 simulations, the change in model parameters appears to be stable as the simulation time increases, indicating that the simulation results are reliable (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Natural gas potential of Neogene source rocks in the Yiliping area, Qaidam Basin: Using an improved hydrocarbon generation and expulsion model based on least‐squares Monte Carlo

Shao

et al. 2023

Geological Journal

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The Neogene petroleum system in the Yiliping area of the Qaidam Basin presents great prospects for natural gas exploration. However, its natural gas potential, including the source rock characteristics, is insufficient. Due to a lack of geological constraints, the hydrocarbon generation and expulsion (HGE) model, which is widely used in resource potential evaluation, may be unable to obtain optimal parameters. Here, we propose an improved HGE model based on least‐squares Monte Carlo to assess the HGE characteristics and natural gas resource potential of the Neogene source rocks in the Yiliping area by combining geological and geochemical investigations. The findings show that the Neogene source rock is effective and has significant potential for natural gas generation. Algae and bacteria, which were deposited in a saline and anoxic environment, are the primary sources of organic matter in Neogene source rock (primarily Type II and Type III). Modelling work suggests that Type II and III kerogen of Neogene source rock reach hydrocarbon generation threshold (HGT) at Ro = 0.38% and Ro = 0.49% and reach hydrocarbon expulsion threshold (HET) at Ro = 0.45% and Ro = 0.55%. The maximum HGE intensities are 3400 × 104 and 3378 × 104 t/km2. The extra‐source natural gas and shale gas resource potentials are predicted to be 2.05 × 1012 m3 to 4.11 × 1012 m3 and 7.03 × 1012 m3. The findings will guide future Neogene natural gas exploration in the Yiliping area of the Qaidam Basin.

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Section: Resultsmentioning

confidence: 99%

Natural gas potential of Neogene source rocks in the Yiliping area, Qaidam Basin: Using an improved hydrocarbon generation and expulsion model based on least‐squares Monte Carlo

Shao

et al. 2023

Geological Journal

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“…Radiocarbon dating is widely used for lacustrine sediment chronology determination (Long et al, 2011). However, 14 C dating of such sediments could be problematic because they often suffer from contamination from sources of 'old carbon' (hard water reservoir effect) (Liu et al, 2009) and the reservoir effect (Wang et al, 2007;Queiroz et al, 2018;Xu et al, 2018). In addition, lack of continuous and suitable dating materials also makes it a challenging work to obtain accurate chronologies of fluvial-lacustrine sediment by 14 C dating.…”

Section: Introductionmentioning

confidence: 99%

Holocene OSL Chronology of Flu-Lacustrine Sediments in Yangtze River Basin, Wuhan Area, China

et al. 2021

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Wuhan area located middle Yangtze River Basin, is dominated by East Asian Monsoon. Widely developed Holocene flu-lacustrine sediments are ideal materials for the reconstruction of paleoclimate change and geo-environment evolution, for which the chronology is a key issue. In this study, 20 luminescence dating samples were collected from a flu-lacustrine sequence and the reliability of the quartz OSL dating to these samples were checked by using luminescence characteristics of dose recovery test and thermos transfer test. Our results indicate that different grain size fraction of 4~11 μm, 38~63 μm, and 90~125 μm were well-bleached before burial. Dating results show that all these ages range from 0.8 ± 0.1 to 7. 9 ± 0.7 ka between 4.25 and 38.55 m, and most of them follow the stratigraphic sequence and other climatic recorder within the normal range of error. Disordered OSL ages may be caused by complicated transport-deposit processes. As a consequence, OSL dating method of SAR-SGC protocol could provide a significant chronology for Holocene flu-lacustrine sediment in large river depo-system.

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Organic geochemical characteristics and organic matter accumulation of the Eocene lacustrine source rock in the Yingxi area, Western Qaidam Basin, China

Fan

Huang

et al. 2023

Int J Earth Sci (Geol Rundsch)

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Kinetic analysis of hydrocarbon generation based on saline lacustrine source rock and kerogen samples in the western Qaidam Basin, China

Cited by 7 publications

References 22 publications

Natural gas potential of Neogene source rocks in the Yiliping area, Qaidam Basin: Using an improved hydrocarbon generation and expulsion model based on least‐squares Monte Carlo

Natural gas potential of Neogene source rocks in the Yiliping area, Qaidam Basin: Using an improved hydrocarbon generation and expulsion model based on least‐squares Monte Carlo

Holocene OSL Chronology of Flu-Lacustrine Sediments in Yangtze River Basin, Wuhan Area, China

Organic geochemical characteristics and organic matter accumulation of the Eocene lacustrine source rock in the Yingxi area, Western Qaidam Basin, China

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