【摘要】 松辽盆地北部西部斜坡区江55区块属于高孔、中高渗透砂岩储层,平均砂岩厚度3.2m。经统计,主力油层组SⅡ+Ⅲ2砂岩发育井点大多落在地震振幅属性平面图的中、弱振幅区域。针对疏松薄互砂岩储层中、弱振幅地震响应的特点,从褶积模型理论出发,分析了地震振幅本质,多方面探讨了该区振幅异常形成的原因,并对弱振幅河道砂体进行了预测。更多还原

【Abstract】 Block Jiang 55 in the west slope of northern Songliao Basin belonged to high porosity and medium-high permeability sandstone reservoir with average sandstone thickness of 3.2m.Statistics indicates that the most of sandstone development wells in main Layer SⅡ+Ⅲ2 were located in medium-weak amplitude area of seismic amplitude attribute map.Aiming at the seismic response characteristics of unconsolidated thin interbed sandstone reservoir,weak amplitude river channel sand body is predicted by analyzing the essence of seismic wave amplitude and discussing the reason of amplitude anomaly in this area based on convolution model theory.更多还原