OALib Journal期刊
ISSN: 2333-9721
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鄂尔多斯盆地延川南区块煤储层酸化改造实验研究
Keywords: 煤,储层,孔隙,渗透性,酸化,控制因素
Abstract:
?运用煤层气地质学、高等煤化学、煤岩学以及油气开发地质学的理论与方法,探讨了煤储层改造的新原理。从常规储层酸化改造的角度,设计并开展了煤岩二氧化碳、土酸酸化改造模拟实验,并配以常规渗透率测试。实验结果显示,煤岩经过酸化后,渗透率得到不同程度的改善。结合压汞实验、x-衍射实验、扫描电镜实验对样品进行分析,发现经过酸化的煤岩矿物组分得到了不同程度的溶蚀,孔隙结构、渗流通道和渗透性均得到不同程度的改善,但其改造效果主要决定于原煤储层的基础孔渗特征、矿物组成及含量和酸化改造后排液的时间控制。
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