| 小波分析在高分辨率层序地层研究中的应用 |
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| 引用本文： | 赵军龙,谭成仟,李娜,李庆春.小波分析在高分辨率层序地层研究中的应用[J].地球科学与环境学报,2007,29(1):90-94. |
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| 作者姓名： | 赵军龙 谭成仟 李娜 李庆春 |
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| 作者单位： | 1. 长安大学,地质工程与测绘工程学院,陕西,西安,710054
2. 长安大学,地质工程与测绘工程学院,陕西,西安,710054;西北大学,地质学系,陕西,西安,710069 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 为了研究测井曲线小波变换用于高分辨率层序地层研究的方法效果,从小波系数模极值点、过零点与信号突变点数学关系出发,分析高分辨率层序地层研究对测井曲线划分不同级别层序的要求,探讨了测井小波变换最佳分解级次和适于测井曲线分层的小波函数选择,以一取心率高钻孔为例,用2种小波函数对4种测井曲线进行小波变换和高分辨率地层界面解译。研究表明,选择恰当窗宽小波函数决定测井曲线小波分层精度,测井数据sym 6小波分解的小层界面划分效果要稍好于db 4小波;GR、RT曲线正则性小波分解可以很好地满足高分辨率层序地层划分要求;测井曲线小波分层结果与岩心分析结果一致性好。
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| 关 键 词： | 小波系数模 过零点 突变点 高分辨率层序 分层 测井曲线 |
| 文章编号： | 1672-6561（2007）01-0090-05 |
| 修稿时间： | 2006-06-23 |
Application of Wavelet Analysis in High Resolution Sequence Analysis |
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| ZHAO Jun-long,TAN Cheng-qian,LI Na,LI Qing-chun.Application of Wavelet Analysis in High Resolution Sequence Analysis[J].Journal of Earth Sciences and Environment,2007,29(1):90-94. |
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| Authors: | ZHAO Jun-long TAN Cheng-qian LI Na LI Qing-chun |
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| Abstract: | For the purpose of studying the method and effect of logging curves wavelet transform in high-resolution sequence research,this paper analyzes the demand for high resolution sequence study according to the logging curves in different gradation sequences demarcation,researches the optimum decomposition gradation of wavelet transform in logging curve and the choosing of optimum wavelet function.Taking a hole in Ordos basin which is a good coring hole as an example,it makes the wavelet transform on four curves with two wavelet function.The study indicates that optimum windows width determines the layering precision,interface partition with sym 6 wavelet is better than with db 4.It also show that canonical wavelet decomposition of GR and RT satisfies the demand,and layering with wavelet correlate well with core analysis. |
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| Keywords: | wavelet coefficient module zero crossing point discontinuity point high resolution sequence demarcation logging curve |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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