Abstract
Using molecular geochemical data from infrared spectrometer and pyrolysis gas chromatography-mass spectrometry, this paper investigates the petroleum generation characteristics of Jurassic coal measures from Kuche depression, Tarim Basin, NW China. The results showed that the Jurassic coaly rocks with medium maturity (R0%: 0.8–1.1) were enriched in gas-prone functionalities (-CH3) and low molecular weight pyrolysates (< nC21), indicating that the coaly rocks from Kuche depression were gas/condensate prone at the stages of middle to high maturation, and it was further supported by the oil/source correlation from well Yinan 2 in this region.
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Jia, C. Z., Gu, J. Y., Zhang, G. Y., Geological constraints of giant and medium-sized gas fields in Kuqa depression, Chinese Science Bulletin, 2002, 47(suppl.): 47–54.
Liang, D. G., Zhang, S. C., Zhao, M. J. et al., Hydrocarbon sources and stages of reservoir formation in Kuqa depression, Tarim Basin, Chinese Science Bulletin, 2002, 47(suppl.): 62–70.
Song, Y., Jia, C. Z., Zhao, M. J. et al., Controlling factors for large gas field formation in thrust belt of Kuqa coal derived hydrocarbon foreland basin, Chinese Science Bulletin, 2002, 47(suppl.): 55–61.
Sun, Y., Liu, D., Fan, S. et al., Gas generated and accumulated in a large, ultra-high pressured gas reservoir of china: integration of geochemical and geological data, in Abstract of 20th International Meeting on Organic Geochemistry, UMR 7566 GZR, Universite Henri Poincare, France, 2001, 146–147.
Dai, J., He, B., Sun, Y. et al., Formation of the central-Asia coal-formed gas accumulation domain and its source rocks, Petroleum Exploration and Development (in Chinese), 1995, 22(3): 1–6.
Dai, J., Li, X., Characteristics of coal-formed gas accumulation belts in the east part of the central-Asia coal-formed gas accumulation domain, Exploration and Development (in Chinese), 1995, 22(5): 1–7.
Chen, J., Zhao, W., Qin, Y. et al., Petroleum formation in Jurassic coal-bearing basins, Northwest China (Part 1), Exploration and Development (in Chinese), 1998, 25(3): 1–5.
Chen, J., Zhao, W., Qin, Y. et al., Petroleum formation in Jurassic coal-bearing basins, Northwest China (Part 2), Exploration and Development (in Chinese), 1998, 25(4): 3–6.
Chen, J., Zhao, W., Qin, Y. et al., Petroleum formation in Jurassic coal-bearing basins, Northwest China (Part 3), Exploration and Development (in Chinese), 1998, 25(5): 3–7.
Larter, S., Application of analytical pyrolysis techniques to kerogen characterization and fossil fuel exploration/exploitation, in Analytical Pyrolysis: Techniques and Applications (ed. Voorhees, K. J.), Southampton: Butterworth & Co LTD, 1984, 212–276.
Sun, Y., Zhu, J., Xu, H. et al., Environmental constraints on oil-generating coals, Geochemistry (in Chinese), 2002, 31(1): 8–14.
Sun, Y., Sheng, G., Fu, J., Application of pyrolysis gas chromatography technique to evaluation of coal-generated hydrocarbon, Science in China, Ser. D, 1997, 40(1): 99–103.
Horsfield, B., Practical criteria for classifying kerogens: some observations from pyrolysis-gas chromatography, Geochimica et CosmochimicaActa, 1989, 53(4): 891–901.
Lin, R., Patric, R., Studying individual macerals using I. R. microspectroscopy, and implications on oil versus gas/condensate proneness and low-rank generation, Organic Geochemistry, 1993, 20(6): 695–706.
Sun, Y., Sheng, G., Peng, P. et al., Compound-specific analysis as a tool for correlating coal-sourced oils and interbedded shale-sourced oils in coal measures: an example form Turpan Basin, Organic Geochemistry, 2000, 31(12): 1349–1362.
Liang, D., Zhang, S., Chen, J. et al., Organic geochemistry of oil and gas in the Kuqa depression, Tarim Basin, NW China, Organic Geochemistry, 2003, 34(7): 873–888.
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Sun, Y., Xiao, Z., Liu, D. et al. Factors controlling the enrichment of natural gas in Kuche depression, Tarim Basin, NW China: Molecular geochemical evidence from sedimentary organic matter. Chin. Sci. Bull. 49 (Suppl 1), 66–71 (2004). https://doi.org/10.1007/BF02890455
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DOI: https://doi.org/10.1007/BF02890455