摘要
本次研究在基于多元标定和井震对比的前提下,对东营凹陷沙三中亚段东营三角洲进行了高精度层序地层格架的建立,识别并追踪了目的层段关键的三级层序界面和三角洲进积体内部不同期次的进积单元界面,并总结了各个界面的沉积相、岩相和地震相组合特征.在此基础上选取典型地震剖面进行了地震分频处理,认为不同频段地震资料其所揭示的地质信息是存在差异的.分频地震处理的结果显示,低频资料能够清晰地显示三级层序界面和三角洲进积体内部结构差异,可用于划分内部的进积单元;高频资料能够显示出进积单元内部的高频旋回.利用高频地震资料所进行的高频旋回划分,与钻井岩性、测井曲线响应和测井曲线小波变换的结果具有很好的对应程度.
By the well-to-seismic calibration,this study built up the high-resolution sequence stratigraphic frame.The thirdorder sequence boundaries of the middle sub-section of the 3rd Member of Shahejie Formation and some boundaries of the progradation units in the Dongying Delta could be identified,and all the characteristics of the boundaries would be discussed further,including the sedimentary facies,lithology and seismic facies.The seismic frequency-division technology was used in the classical seismic, which revealed that the geological information from the spectral decomposition profiles were different.The results showed that,the third-order sequence boundaries and the internal architectures could be observed clearly in the low-frequency profile（10Hz）,which might be positive for the identification of the progradation units in the Dongying Delta.Whereas,the high-frequency profile（40Hz）could be used in the classification of the high-frequency cycles in each unit.The results about the cycles from the high-frequency profile had a closely correspondence relationship to the lithology,log responses and logging wavelet transform.
出处
《地球物理学进展》
CSCD
北大核心
2014年第3期1248-1256,共9页
Progress in Geophysics
基金
国家油气重大专项项目(2008ZX05051)资助
关键词
地震分频技术
东营三角洲
沙河街组
东营凹陷
seismic frequency-division technology
Dongying delta
Shahejie formation
Dongying depression
作者简介
苏明，男，1983年生，副研究员，博士，中国科学院广州能源研究所天然气水合物成藏机制研究实验室，从事深水沉积学及其资源效应、层序地层学、地球物理综合解释等方面的科研工作．（E-mail：suming@ms．giec．ac．cn）
