基于模型的薄互层地震反射滤波效应研究

罗敬, 孙成禹

A model-based study of the filtering effects of thin-interbedded reservoirs on seismic reflection waves

LUO Jing, SUN Cheng-Yu

图9 砂泥比变化的薄互层模型的正演炮记录 a—砂岩累计厚度不变的薄互层模型的正演炮记录,从左至右砂岩的分层情况分别为:1×18 m,2×9 m,3×6 m,6×3 m,9×2 m,18×1 m;b—总厚度不变的薄互层模型的正演炮记录,从左至右薄互层的分层情况分别为:1×15 m,3×5 m,5×3 m,15×1 m;c—单套砂泥层砂泥比变化的薄互层模型的正演炮记录从左至右单套砂泥层砂泥比分别为:0.3,1,3,9

Fig.9 Forward shot record of sand to mud ratio variant thin interlayer models a—forward shot record of sandstone cumulative thickness invariant thin interlayer models,the stratification of sandstone from left to right is:1×18 m,2×9 m,3×6 m,6×3 m,9×2 m,18×1 m;b—forward shot record of total thickness invariant thin interlayer models,the stratification of thin interlayer from left to right is:1×15 m,3×5 m,5×3 m,15×1 m;c—forward shot record of sand to mud ratio in a single set of sand and mud layers variant thin interlayer models,the sand to mud ratio of a single set of sand and mud layer from left to right is:0.3,1,3,9