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Natural gas releasing simulation experiment of coal in process of temperature decreasing and decompression and preliminary application in Ordos Basin

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Chinese Science Bulletin

Abstract

Natural gas releasing simulation experiments were carried out in laboratory for researching the gas storage capacity in state of high temperature and high pressure and its gas releasing potential in process of temperature decreasing and decompression. The exiting phase state was studied through measuring gas adsorption of coal and PVT phase calculating of natural gas. Gas volume, gas molecular and isotope compositions in process of temperature decreasing and decompression were measured, natural-gas yields released from the Upper Paleozoic coal strata after later Cretaceous (K3) were calculated and the formation of the reservoir was studied combining with the geological background. The results indicate that natural gas stored in coal has still bigger releasing potential after the uplift of Upper Paleozoic strata. There exists a weak gas supply-effluent equilibrium in the reservoir of Ordos Basin, which is another possible evidence that the Upper Paleozoic gas reservoir may be a deep basin gas reservoir.

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Authors and Affiliations

  1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, 510640, Guangzhou, China

    Yunpeng Wang, Ping’an Peng, Jialan Lu & Dehan Liu

Authors
  1. Yunpeng Wang
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  2. Ping’an Peng
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  3. Jialan Lu
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  4. Dehan Liu
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Correspondence to Yunpeng Wang.

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Wang, Y., Peng, P., Lu, J. et al. Natural gas releasing simulation experiment of coal in process of temperature decreasing and decompression and preliminary application in Ordos Basin. Chin. Sci. Bull. 49 (Suppl 1), 100–106 (2004). https://doi.org/10.1007/BF02890461

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  • DOI: https://doi.org/10.1007/BF02890461

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