摘要
济阳坳陷馆陶组上段岩性油气藏隐蔽性较强,直接的地震识别有因难。在研究孤南洼陷馆陶组上段基本地质特征的基础上,总结出了曲流河砂体的地震识别方法,运用地震相分析初步确定了砂体发育区域。根据地震相干分析显值低、累计振幅值强的特点,划分了砂体有利区带和分布范围,在地震反演剖面上落实了砂体位置,再作综合解释确定砂体几何形态。该方法经实践证明,砂体识别效果好。
The lithologic reservoirs of the upper Ng2 in Jiyang sag are extremely elusive and are difficult to detect directly from seismic data. Based on an analysis of the geology of Ng2, the author proposed a procedure for seismic identification of meandering river sands. The extents of sands are determined using seismic facies analysis. Favorable sand bodies and their extents are inferred from cube coherence analysis. Sand body positions are measured on seismic inversion sections and the geometries of sands are deduced by integrated interpretation. The method has been testified in practice.
出处
《勘探地球物理进展》
2006年第4期264-268,共5页
Progress in Exploration Geophysics
关键词
曲流河砂体
地震相分析
地震相干
地震属性分析
累计振幅
meandering river sand body
seismic facies analysis
seismic coherence
seismic attribute analysis
accumulated amplitude
