高频地震层序解释技术及应用  

High-frequency seismic sequence interpretation technique and its application

作　　者：马丽娟 陈珊[2] 

机构地区：[1]中石化地球物理公司,北京100120 [2]中国地质大学(北京),北京100083

出　　处：《地球物理学进展》2014年第3期1206-1211,共6页Progress in Geophysics

摘　　要：常规地震剖面由于分辨率有限,难以实现高频层序的解释,本文采用反射系数反演技术和地层切片技术,形成了高频层序解释方法.反射系数反演技术有效提高了地震剖面的分辨率,有利于建立三级层序格架,结合地层切片技术,可以方便快速的得到初始高频层序界面,采用平面控制剖面的解释方法,用切片平面沉积展布的合理性检验高频层序解释的合理性和等时性,指导高频剖面上高频层序解释方案的调整,减少了层位解释的多解性,增强了层位的等时性.在高频层序格架控制下形成新的地层切片,等时性比三级层序格架更强,可以更好的刻画平面沉积特征.高频层序解释技术避免了常规层位解释的繁琐和多解性,具有很强的实用性,同时高频层序的地震相分析又为沉积微相研究提供了可靠的基础资料,有利于储层预测或开发级别的储层研究.High-frequency sequence is not easy to interpret on common seismic sections for its lower resolution. We use reflectivity inversion and stratal slice technique to realize highfrequency sequence interpretation. Third-order sequence stratigraphic framework is easier to establish on high resolution section of reflectivity inversion.Initial high-frequency sequence boundary was obtained convenient by stratal slice technique.Then we use the rationality of plane sedimentary distribution to check the rationality of sectional high-frequency sequence interpretation under the principle of plane controlling section.This method guides the adjusting of high-frequency sequence interpretative version,which reduces the multiple solutions of horizon interpretation and enhances horizon isochronism.The stratal slices under high-frequency sequence framework are more isochronous than third-order sequences framework.It can depict the plane sedimentary characteristics of high frequency sequence better.The high-frequency sequence technique avoids common fussy and ambiguous interpretation and has strong practicality.Seismic facies analysis of high-frequency sequence provides dependable basic data for sedimentary microfacies research,and is beneficial to reservoir prediction and research in development stage.

关 键 词：高频层序 反射系数反演 地层切片 地震沉积 

分 类 号：P631[天文地球—地质矿产勘探]