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Zhongkun Yu

Bio: Zhongkun Yu is an academic researcher from China National Offshore Oil Corporation. The author has contributed to research in topics: Structural basin & Source rock. The author has an hindex of 1, co-authored 1 publications receiving 6 citations.

Papers
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Journal ArticleDOI
TL;DR: In this paper, a comparative study on organic geochemistry and kinetics was performed on two representative coal measure mudstone and coal samples of the Eocene Pinghu Formation in the Xihu Sag, East China Sea Shelf Basin, China.

21 citations

Journal ArticleDOI
TL;DR: A systematic review of intelligent threat profiling techniques for APT attacks, covering three aspects: data, methods, and applications, is provided in this paper , which summarizes the latest research in applications, proposes the research framework and technical architecture, and provides insights into future research trends.

4 citations


Cited by
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Journal ArticleDOI
08 Dec 2020
TL;DR: The results reveal that the Pinghu coal is both gas- and oil-prone and could not only generate but also expel hydrocarbons, and areas in the Xihu sag with considerable thicknesses of coal should be paid particular attention for future hydrocarbon exploration.
Abstract: The Xihu Sag in the East China Sea Shelf Basin is a focus for hydrocarbon exploration and development. Hydrocarbons in the Xihu Sag are believed to have mainly originated from coals in the Paleogene Pinghu Formation (shortened as Pinghu coal). In this study, the hydrocarbon generation potential, origin of organic matter, and depositional setting of the Pinghu coal were analyzed by means of optical microscopic analysis, bulk organic geochemistry, and molecular geochemistry analysis. The results reveal that the maceral compositions of the Pinghu coal are characterized by a predominance of vitrinite (73.91-96.13%) with relatively high contents of liptinite (1.47-23.02%) and only minor amounts of inertinite (0-5.18%). Type II-III kerogen and high values of TOC (total organic carbon) (8.24-56.77%), EOM (extractable organic matter) (14 601-112 259 ppm), and HI (hydrogen index) (178.76-291.18 mg·HC/g·TOC) indicate that the Pinghu coal is both gas- and oil-prone and could not only generate but also expel hydrocarbons. The results of vitrinite reflectance (0.54-0.90%), Tmax (421-453 °C), and biomarker-related parameters, including CPI (carbon preference index) (1.10-1.61), OEP (odd-to-even predominance) (1.09-1.49), 22S/(22S + 22R) for C31 homohopane (0.59-0.62), and 22S/(22S + 22R) for C32 homohopane (0.57-0.60), suggest that these coaly source rocks have entered the hydrocarbon generation threshold, most of which have entered the expulsion threshold. Biomarker-related parameters of ∑n-C21-/∑n-C22+ (0.38-3.62), Pr/Ph (3.33-9.23), Pr/n-C17 (1.91-14.88), Ph/n-C18 (0.35-1.83), 22S/(22S+22R) of C31 homohopane (0.59-0.62), 22S/(22S + 22R) of C32 homohopane (0.57-0.60), 1,2,7-TMN/1,3,7-TMN (0.74-14.39), and 1,2,5-TMN/1,3,6-TMN (2.22-21.07) suggest that organic matter in the Pinghu coal was deposited under relatively oxic peatland conditions characterized by a predominance of terrestrial higher plant input, especially the resin-rich Pinaceae and Taxodiaceae. The absence of combustion-derived PAHs indicates that neither vegetation fire nor peat fire occurred very frequently during the formation of peat. Areas in the Xihu sag with considerable thicknesses of coal should be paid particular attention for future hydrocarbon exploration. From a global perspective, Cenozoic coaly source rocks, which are characterized by a relatively high content of aliphatic components, should be paid special attention for their oil-prone properties related to the advent of conifer plants.

12 citations

Journal ArticleDOI
TL;DR: In this paper , coal has the highest organic matter abundance, followed by carbonaceous mudstone and mudstone, and the higher phytoplankton contribution to the mudstones is verified by the higher liptinite content.

6 citations

Journal ArticleDOI
TL;DR: In this paper, coal has the highest organic matter abundance, followed by carbonaceous mudstone and mudstone, and the higher phytoplankton contribution to the mudstones is verified by the higher liptinite content.

6 citations

Journal ArticleDOI
TL;DR: In this paper , the authors investigated the potential of liptinite-rich coal coals to generate oil and showed that the maximum cumulative yields of oil produced range from 122.74 to 154.09 mg/g·TOC, and the coals in the sag can also generate oil in their immature stage.

6 citations

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the potential of liptinite-rich coal coals to generate oil and showed that the maximum cumulative yields of oil produced range from 122.74 to 154.09

6 citations