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作 者:王磊[1,2,3] 樊太亮[2] 杜云星[1,2] 孙滨斌[1] WANG Lei;FAN Tailiang;DU Yunxing;SUN Binbin(Sinopec International Petroleum Exploration and Production Corporation,Beijing 100029;China University of Geosciences(Beijing),Beijing 100083;Institute of Geology and Geophysics,CAS,Beijing 100029)
机构地区:[1]中国石化集团国际石油勘探开发有限公司,北京100029 [2]中国地质大学(北京),北京100083 [3]中国科学院地质与地球物理研究所,北京100029
出 处:《中国煤层气》2019年第5期28-31,共4页China Coalbed Methane
摘 要:实验显示Bowen盆地煤层样品显微组分百分含量镜质组>惰质组>壳质组,最大镜质体反射率0.69%~0.97%,为Ⅱ型与Ⅲ型中煤级煤。Surat盆地镜质组>壳质组>惰质组,最大镜质体反射率值位于0.4%~0.65%之间,为低煤级煤和Ⅰ型中煤级煤。等温解吸实验结果显示Bowen盆地煤层含气量范围4.32~11.55m^3/t,Surat盆地含气量2.28~13.89m^3/t,Surat盆地煤层生烃能力高于Bowen盆地。中等埋深煤层地质条件比浅、深煤层好,含气量大,有利于煤层气开发。建议选取Surat盆地中等埋深煤层进行煤层气开发。The experimental results show that the percentage of microscopic composition of the Bowen Basin have the character of vitrinite > inertinite> liptinite, the maximum vitrinite reflectance is around 0.73%~0.96%, which is medium maturity, belong to typeⅡand Ⅲ medium rank coal. While in Surat basin vitrinite > liptinite > inertinite, the maximum vitrinite reflectance is around 0.4%~0.65%, which is low maturity, belong to low rank and typeⅠmedium rank coal. Isothermal desorption experiments show that the gas content of coal seams in Bowen Basin is 4.32~11.55 m^3/t, while Surat Basin is 2.28~13.89 m^3/t, the hydrocarbon generation capacity of Surat Basin is higher than Bowen Basin. Coal seam with medium buried depth has relatively better geology condition than shallow and deep coal seam, also with better gas content, which is favorable for CSG development. It is recommended to select medium buried depth coal seams in the Surat Basin for CSG development.
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