Geophysical methods for the study of sedimentary cycles

查看全文 作　　者：Xu [1,2]Jingling;Liu [1,2]Luofu;Wang [1,2]Guiwen;Shen [1,2]Jinsong;Zhang [3]Chunhua

机构地区：[1]School of Resources and Information Technology, China University of Petroleum, Beijing 102249, China;[2]State Key Laboratory of Petroleum Resource and Prospecting, China University of Petroleum, Beijing 102249, China;[3]Department of Computer Science and Technology, China University of Petroleum, Beijing 102249, China

出　　处：《Petroleum Science》索引2009年第6卷第3期,共7页

基　　金：supported by the National Science&Technology Major Project(No.2008ZX05020) of CNPC 摘　　要：We present the wavelet depth-frequency analysis and variable-scale frequency cycle analysis methods to study sedimentary cycles.The spectrum analysis,variable-scale frequency cycle analysis, and wavelet depth-frequency analysis methods are mainly discussed to distinguish sedimentary cycles of different levels.The spectrum analysis method established the relationship between the spectrum characteristics and the thickness and number of sedimentary cycles.Both the variable-scale frequency cycle analysis and the wavelet depth-frequency analysis are based on the wavelet transform.The variable-scale frequency cycle analysis is used to obtain the relationship between the periodic changes of frequency in different scales and sedimentary cycles,and the wavelet depth-frequency analysis is used to obtain the relationship between migration changes of frequency energy clusters and sedimentary cycles. We designed a software system to process actual logging data from the Changqing Oilfield to analyze the sedimentary cycles,which verified the effectiveness of the three methods,and good results were obtained. 关键词：沉积旋回地球物理方法周期分析方法频率周期频谱分析法小波变换频谱特性小波分析

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Geophysical methods for the study of sedimentary cycles

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