地震沉积学方法在确定沉积相边界方面的应用

通过应用测井曲线和地震资料识别的不整合界面、最大水退界面和最大水进界面，将古近系双阳组划分为2个三级层序、5个体系域。SQⅠ包括双阳组一段和二段，分为低位体系域、湖进体系域和高位体系域。SQⅡ包括了双阳组三段地层，分为低位体系域和湖进体系域。在层序格架内，利用地震沉积学理论和方法，利用等时细分地层地震属性分析技术，在高位体系域中识别出强制性水退期沉积、各时期沉积体系的发育过程和沉积体系边界，在此基础上预测出双阳组比较有利的4套储盖组合。

IDENTIFY THE BOUNDARY OF DEPOSITIONAL SYSTEM BY USING SEISMIC SEDIMENTOLOGY

ShuangYang Formation of Paleogene can be divided into two three order sequences and five system tracts through recognizing the subaerial unconformity,the maximum regression surface,the maximum flooding surface on the basis of well logging and seismic data.The sequence stratigraphyⅠincludes the first and second section of Shuang Yang Formation and is composed of the lowstand system tract,transgressive system tract and highstand system tract.The sequence stratigraphy Ⅱ includes part of section three of Shuangyang and is composed of the lowstand system tract and transgressive system tract.This paper identifies the sedimentation of forced regression in highstand system tract,the developing process and the boundary of deposition system in different period by using seismic sedimentology approach which is seismic attribution halving method.At last,four combination caps and reservoirs are predicted.