Estimation of the Mineable Oil Shale Amount in West Fukang at the Northern Foot of Bogda Mountain, Zhunggar Basin, China

Tao, Shu; Wang, Y.-B.; Tang, Dazhen; Zhang, B.; Deng, Chun Miao; He, Wenjun

doi:10.1080/15567036.2012.674085

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…1b). The strata in the study area are dominated by Upper Permian, Triassic, Early Jurassic and Cenozoic rocks [16][17][18]. Oil shale mainly occurs in the Upper Permian Lucaogou Formation, which comprises medium-to-fine sandstone, interbedded sandy shale and dolomitic limestone in addition.…”

Section: Geological Settingmentioning

confidence: 99%

Characteristics of Upper Permian oil shale and analysis of the resource development potential in the Lucaogou Formation in the Junggar Basin, northern Bogda Mountains, Northwest China

Li¹,

Liu²,

R³

et al. 2020

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Based on the results of exploration carried out from 2003 to 2017, oil shales from different areas of the Permian Lucaogou Formation in the JunggarBasin in the northern Bogda Mountains, Northwest China were comparatively investigated, their resources were summarized and development potential was analyzed. The layer of oil shale in the central region of the study area is the thickest, with the greatest cumulative thickness of 198.75 m, while in the western and eastern regions the layer is relatively thin, 66.18 m and 130.00 m, respectively. The total organic carbon (TOC) content of oil shale is 5-35 wt%, whereas the average TOC of oil shale in the central and eastern regions is higher than that in the western region. Based on Hydrogen Index (HI)-Tmax and Pyrolytic Hydrocarbon (S 2 )-TOC diagrams, the organic matter type of oil shale in the central region is mainly I, and in the western and eastern regions mostly II 1 -II 2 and I-II 1 , respectively. In the plane of the whole northern Bogda Mountains, the oil yield of oil shale greatly varies, and the quality of oil shale in the central region is the highest. Of all the studied samples, those with an oil yield ω > 5 wt% account for 70%. Oil shale resources in the study area total 55.241 billion tons (identified resources are 3.921 billion tons), while converted shale oil resources form 5.293 billion tons. Of the 55.241 billion tons, oil shale resources with an oil yield higher than 5 wt% account for 97.26%. Analysis shows that the Yaomoshan Mountain mining area has the greatest development potential, followed by the Lucaogou and Shanghuangshanjie-Panjiazikou mining areas.

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Section: Geological Settingmentioning

confidence: 99%

Characteristics of Upper Permian oil shale and analysis of the resource development potential in the Lucaogou Formation in the Junggar Basin, northern Bogda Mountains, Northwest China

Li¹,

Liu²,

R³

et al. 2020

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“…There are late Paleozoic middle Permian, Mesozoic Triassic, Mesozoic Lower Jurassic, and Cenozoic tectonic layers in the study area. It consists mainly of the Upper Permian Lucaogou, Hongyanchi, Quanzijie, Wutonggou, Guodikeng, Lower Triassic Jiucaiyuanzi, Shaofanggou, Middle-Upper Triassic Karamay, Upper Triassic Huangshanjie, Lower Jurassic Badaowan, and the Sangonghe Formations (Figure c). ,, The oil shale is mostly deposited in the Lucaogou Formation of the Middle Permian. The Lucaogou Formation primarily develops black oil shale deposits; gray-black, black-brown, and black medium-fine sandstone; sandy shale; and mudstone-interbedded deposits.…”

Section: Geological Settingmentioning

confidence: 99%

Lake Level Controls on Oil Shale Distribution in the Lucaogou Formation, Wujiawan Area, Junggar Basin, Northwest China

Sun

Liu

et al. 2019

Energy Fuels

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In a thick section of the upper Permian, high-quality oil shale is present in the Lucaogou Formation on the northern flanks of Bogda Mountain, which is located in the southern Junggar Basin, northwest China. However, the distribution of these oil shales has yet to be studied. Based on 56 boreholes and associated oil yield analytical data in the area of Wujiawan in the south Junggar Basin, we investigated the distribution and formation of these oil shales. The oil shales in the Lucaogou Formation have an average oil yield of 6.09 wt %, and the maximum is 22.27 wt %. According to the borehole and oil yield data, the oil shale formed in a third-order sequence and was deposited mainly in the transgressive system (TST) and high stand tracts (HST). The oil shale has an average TOC content of 12.12 wt %, and the average petroleum potential is 66.54 mg/g. The TST oil shale mainly contains type II kerogen, which was derived from terrestrial sources and lake algae. The oil shale deposited during the early stages of the TST occurs locally distributed and occurs as lens-shaped bodies. As the lake level rose, the area over which the oil shale was deposited gradually increased, along with the thickness, extent, and oil yield. The oil shale layers increase in the average thickness from 6.69 to 11.36 m, from the base to top of the TST, and the average oil yield increases from 5.66 to 6.90 wt %. In the HST, the oil shale has an average TOC content of 20.56 wt %. Also, the average petroleum generation potential (S 1 + S 2 ) is up to 130.41 mg/g. Additionally, the organic matter type is largely type I kerogen and dominantly lake algae. The HST oil shale is thick (up to 130 m), layered, and continuously and widely distributed. Several parasequences can be identified in a single layer of oil shale, and the average thickness and oil yield of each parasequence are 10.13−12.47 m and 5.27−7.07 wt %, respectively. The curve change trends of V/(V + Ni), Ni/Co, and Cu/Zn are divided into three stages: phase I, rise (TST); phase II, high-Value zone (HST); and phase III, stable zone (HST). A similar trend of change was found in comparisons between the central and eastern regions, which showed that with the rise of a lake plane, the lake changes from an oxygen-poor to oxygen-deficient condition, which increases the space and is conducive to the formation of oil shale.

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“…The Middle Permian sediments there include three organic-rich strata: the Jingjingzigou (P 2 j), the Lucaogou (P 2 l), and the Hongyanchi (P 2 h) Formations, among which, the Lucaogou Formation developed the thickest oil shales (Figure C) . The Lucaogou Formation in the northern foot of the Bogda Mountain was mainly composed of black oil shale, silty shale, mudstone interbedded with grey-black, and dark brown and black medium-fine sandstone. ,− The lithology of Lucaogou Formation is mainly composed of oil shale, but the recoverable thickness varies greatly. The thickness of the oil shales in the middle part of the Bogda Mountain was the largest, being 198.75 m, which was gradually thinning from east to west, being 44–130 m. ,− This means the thickness of the oil shales of the Lucaogou Formation in the Bogda Mountain were very heterogeneous along the transverse direction, making this area a good case for studying the causes of oil shale heterogeneity in large scale.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of the Permian Oil Shale in the Northern Bogda Mountain, Junggar Basin, Northwest China: Implications for Weathering, Provenance, and Tectonic Setting

Sun

Liu

et al. 2020

ACS Earth Space Chem.

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The northern Bogda Mountain is located in the southern margin of the Junggar Basin in northwest China. Based on inorganic geochemistry of oil shale samples of the Middle Permian Lucaogou Formation, the depositional environment, weathering degree, the provenance, and tectonic background of the northern Bogda Mountain were determined. The oil shale in the study area was formed in the deep lake environment. The major and trace element ratios suggest that the oil shale was deposited under semi-humid to humid/warm conditions and a brackish water to salt water setting with strong reduction. The chemical index of alteration values indicates that the oil shale experienced weak to moderate weathering conditions. Geochemical data suggest that the parent rocks of oil shale in the Sangonghe area, the Wujiawan area, and the Dongdalongkou area were siliceous rocks from the North Tianshan Mountain, basalts from the Kelameili Mountain and siliceous rocks mixed with basalts from the North Tianshan Mountain, and the Kelameili Mountain, respectively. According to the parent rock types and the thickness distribution of oil shale, the sediment overspread of ancient rivers from the Kelameili Mountain was larger than that from the North Tianshan Mountains. Combined with the tectonic and sedimentary evolution, it can be inferred that the North Tianshan Mountain area and the Kelameili Mountain area were characterized by a continental collision island arc environment during the Carboniferous period. The differences of weathering and provenance led to the differences of nutrient lead phosphorus (P) between different regions of the ancient lake, which thus led to the lateral heterogeneity of oil shale in its thickness and quality.

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Estimation of the Mineable Oil Shale Amount in West Fukang at the Northern Foot of Bogda Mountain, Zhunggar Basin, China

Cited by 6 publications

References 10 publications

Characteristics of Upper Permian oil shale and analysis of the resource development potential in the Lucaogou Formation in the Junggar Basin, northern Bogda Mountains, Northwest China

Characteristics of Upper Permian oil shale and analysis of the resource development potential in the Lucaogou Formation in the Junggar Basin, northern Bogda Mountains, Northwest China

Lake Level Controls on Oil Shale Distribution in the Lucaogou Formation, Wujiawan Area, Junggar Basin, Northwest China

Geochemistry of the Permian Oil Shale in the Northern Bogda Mountain, Junggar Basin, Northwest China: Implications for Weathering, Provenance, and Tectonic Setting

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