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本文以饶阳凹陷的两个岩性、地层圈闭研究为例,通过详细研究地震记录与反射系数(组合)的关系,说明地震记录的振幅不仅与反射系数有关,而且与薄层反射系数组合有关,强振幅不一定对应砂体较发育区。本文通过对两种不同尺度的目标采取不同的分析方法:在砂泥岩互层、岩性变化较快的地区,为了搞清楚砂体的发育情况,需要井震结合,用反射系数组合进行综合分析,提取相应振幅属性;在单一岩性的海相地层发育区,沉积较稳定,可根据单一反射系数的特征以及相应地震反射特征,提取相应振幅属性。研究结果表明本文方法取得了良好的应用效果。
Taking the lithologic and stratigraphic traps of the Raoyang depression as an example, the relationship between seismic records and reflection coefficients (combinations) is studied in detail in this paper. It shows that the amplitude of seismic records is not only related to the reflection coefficient, but also to the combination of the reflection coefficient Relevant, strong amplitude may not correspond to the more developed sandbodies. In this paper, we adopt different methods to analyze the targets of two different scales: in sand-shale interbeds and areas with rapid changes of lithology, in order to get a clear understanding of the development of sand bodies, well-seismic combination is needed, and the combination of reflection coefficients is used for comprehensive analysis , And extract the corresponding amplitude property. In a single lithologic marine strata development zone, the deposition is relatively stable, and the corresponding amplitude attributes can be extracted according to the characteristics of single reflection coefficient and the corresponding seismic reflection features. The results show that this method has achieved good results.