鄂尔多斯靖边气田盒8段砂岩储层特征

Computing Techniques for Geophysical and Geochemical Exploration(2009)

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Abstract
根据铸体薄片、物性、岩性、孔隙结构和测井分析及化验资料,对鄂尔多斯盆地靖边气田盒8段储层特征进行了研究.结果表明,该套储层砂岩主要由石英砂岩、岩屑石英砂岩和岩屑砂岩等三类岩石构成,储集空间以剩余原生粒间孔、粒间溶孔为主.储层物性较差,裂缝对渗透率的影响不大.排驱压力不高,中值压力较高,最大孔喉半径和中值孔喉半径都很小,且分选性较差,歪度细.溶蚀作用改善储层的孔渗效果不佳,孔隙结构参数总体上较差.储层物性受沉积微相和成岩作用的影响,利用储层物性和孔隙结构参数,将盒8段储层分为四类,其中Ⅱ类储层为该区的主力储层.
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Key words
Ordes Basin,Pore structure,Reservoir characteristics,Rock type
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