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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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特低渗透储层微观孔隙结构参数对渗流行为的影响——以鄂尔多斯盆地长6储层为例
Keywords: 鄂尔多斯盆地,特低渗透储层,微观孔喉结构,毛细管压力,渗流行为
Abstract:
？通过压汞和渗流实验对鄂尔多斯盆地长6特低渗透储层岩心进行了孔喉结构和渗流实验研究。压汞实验表明，研究区曲线类型总体上属于b类和c类；曲线偏向图的右上方分布，中间过渡段相对较陡，进汞曲线和退汞曲线夹角较小；门槛压力和中值压力高，分选性一般；孔喉半径对渗透率的贡献由单一区域向多区域均有分布；门槛压力、中值压力等与渗透率具有良好的相关关系，但退汞效率和退汞饱和度与渗透率相关性较差。单相渗流实验表明，部分样品在低压力梯度时具有非达西渗流特征，并过渡为达西渗流；两相渗流实验结果表明，储层具有高束缚水饱和度、高残余油饱和度，两相共渗区较窄的特征。
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