河道储层砂体中隔挡层的成因与分布规律

在河道砂体内部构成的不同层次实体界面上，通常存在着４种隔挡层，即细粒物质隔挡层、泥砾隔挡层、植物碎屑隔挡层和成岩隔挡层。它们可以相互组合，构成储层液体流动单元的天然边界；同时可以与储层内部构成单位共同导致河道储层砂体的不均一体。本文详细地论述了４种隔挡层的成因、特征与分布规律。

GENESIS AND DISTRIBUTION REGULARITY OF ISOLATE BARRIER BEDS IN CHANNEL RESERVOIR SANDBODY

Four isolate barrier beds occurened usually in boundary surface of each internal architecture unit in channel sandbody, i. e. find bed, muddy pebble bed, plant clasts bed and diagenic bed. They comprised boundary surfaces of fluid-flow units. Heterogeneity of a channel reservoir sandbody is related to these beds and internal architecture units. This research deals on genesis, characteristics and distribution regularity of four isolate barrier beds.