鲁西-济阳C-P陆表海沉积测井层序对比分析  

Correlation and Analysis of Well-Log Sequences of Epicontinental Sea Sediments of Permo-carboniferous in Luxi and Jiyang

作　　者：余继峰[1] 李增学[1] 王明镇[1] 刘华[2] 王玉林[2] 李江涛[1] 

机构地区：[1]山东科技大学地球信息科学与工程学院,山东青岛266510 [2]胜利油田公司地质科学研究院,山东东营257015

出　　处：《中国矿业大学学报》2007年第1期85-90,共6页Journal of China University of Mining & Technology

基　　金：国家重点基础研究发展规划(973)项目(2003CB214608);教育部留学回国人员科研启动基金项目(2006331)

摘　　要：以鲁西、济阳2大地质单元中的典型钻井W7，H10井的录井、测井资料为依据，选取Morlet小波母函数对研究区晚古生代陆表海沉积层段AC及GR测井序列进行连续小波变换，通过小波波谱图中小波零线位置及波谱变化特征，建立了识别层序、准层序的类型及界面的模式，2个钻井中均划分出3个三级层序，14个准层序．其中层序Ⅰ（2135～2214．45m，以H10井为例）由3个准层序组成，层序Ⅱ（2048．50～2135m）由4个准层序组成，而层序Ⅲ（1809．19～2048．50m）则由7个准层序组成，反映出2地层序发育的横向可比性．沉积体系构成的差异性则说明在2井数百公里距离的尺度上陆表海盆地内古地理环境具有明显的分异性．Based on the recorded geological data of two typical wells W7 and H10, Luxi and Jiyang areas respectively, the well-logging data AC and GR of late Paleozoic epicontinental sea sediment sections were processed using a continous wavelet transform（CWT） and taking the Morlet wavelet as the mother function. By means of the position of the zero line and the varying characteristics of the spectra in the scalogram, a recognition model of sequences and parasequences was established. Totally, three 3rd-order sequences and fourteen parasequences have been classified in the two wells. Sequence Ⅰ （2 135-2 214.45 m, taking well H10 for an example） consists of three parasequences, Sequenc Ⅱ （2 048.50-2135 m） four parasequences and Sequence Ⅲ （1809.19-2048.50 m） seven parasequences, which shows the development of the sequence and parasequence in the two areas can be compared with each other in the meantime. The difference of the depositional system between the two areas reveals that the paleogeographic differentiation at the scale of hundreds of kilometers is obvious within the epicontinental sea basin.

关 键 词：陆表海沉积 测井层序 小波波谱 

分 类 号：P536[天文地球—古生物学与地层学]