【摘要】 垦东地区新近系河流相储层纵向上表现为薄互层,多数砂体厚度小于1/8λ且多层叠置,在地震上一个反射相位是一套砂泥岩薄互层的综合反映,利用常规地震属性分析方法无法描述单层砂体。通过构建薄互层楔状模型,明确了薄互层地震调谐规律,建立了薄互层地震响应与地层参数之间的关系,并以之为指导,提出了薄互层地层毛厚度与砂地比的计算方法,间接描述一套薄互层地层中砂岩等效净厚度,实现了薄互层的间接定量描述。更多还原

【Abstract】 The thin interbed layers are deposited in Neogene fluvial reservoir in Kendong area longitudinally,with layers thickness less than 1 /8 lambda,which can not be characterized by the currently seismic attribute analysis methods,for one seismic phase may be caused by the comprehensive reflection of a set of thin interbed sandstone and mudstone. Based on constructing the thin interbed layers model,clearing the seismic tuning rules of thin interbed layers and establishing the relationship between the seismic reflection of thin interbed layers and its formation parameters,the calculation methods of the visual sandstone thickness and sandstone shale ratio were presented,to describe the equivalent net thickness of sandstone in a set of interbed layers indirectly,and realize the indirect and quantitative seismic description of the interbed layers.更多还原