低阻页岩气储层的测井解释评价
Journal of Chengdu University of Technology(Science & Technology Edition)(2015)
Abstract
为正确解释评价区域页岩气储层,探讨了低电阻率页岩气储层的形成机理.结合大量区域页岩地层的测井特征和地质特点,主要分析了黏土含量、黄铁矿含量、页岩中有机质的成熟度、地层可动水及矿化度、页理(层理、裂缝)等对页岩气地层电阻率的影响,结果表明形成低电阻率页岩储层的原因多,不同区块低电阻率页岩储层的形成机理不同,在实际页岩气井的综合解释评价中得到应用和检验.低阻页岩储层的形成机理和影响因素有“五高”,即:黏土含量高、地层水矿化度高、有机质成熟度高、黄铁矿含量高、页理(层理、裂缝)发育程度高,同时这些影响因素大多相互叠加.
MoreKey words
shale gas,logging interpretation,low resistivity shale,influential factor
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