OALib Journal期刊
ISSN: 2333-9721
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页岩气储量计算方法探讨
Keywords: 页岩气,容积法,动态法,吸附气含量,裂缝
Abstract:
?????页岩气藏是一种非常规气藏,由于气藏特征的特殊性导致储量计算方法有别于常规气藏。首先探讨了页岩气藏的特殊性,其一是存储特征为形式上游离气和吸附气并存、空间上孔隙和裂缝同在;其二是产气机制主要为游离气的扩散和吸附气的解吸。在此基础上,总结了计算页岩气储量的方法,主要有类比法、容积法、压力/累计产量法、物质平衡法、递减曲线分析等,并讨论了各种方法的适用条件。同时,指出在页岩气储量计算中应特别重视孔隙度、裂缝、吸附气、含气饱和度等几个关键问题,并介绍了这些参数的确定方法。
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