| 基于小波能量谱系图及小波曲线的层序地层划分 |
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| 引用本文： | 杨勇强,邱隆伟,陈世悦,付育璞.基于小波能量谱系图及小波曲线的层序地层划分[J].石油地球物理勘探,2011(5):783-789,836,665. |
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| 作者姓名： | 杨勇强 邱隆伟 陈世悦 付育璞 |
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| 作者单位： | 中国石油大学(华东)地球科学与技术学院;中国石化石油勘探开发研究院; |
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| 基金项目： | 国家重大专项“油气勘探新领域储层地质与油气评价”(2008ZX05009-002); 中国石油大学(华东)优秀博士论文培育项目共同资助 |
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| 摘 要： | 基于小波变换时频分析,本文探讨了小波基选取的基本原则及小波分析方法划分地层层序的可行性与稳定性,并建立了小波能量谱系图及小波曲线划分层序地层的地质模型。通过对自然伽马曲线进行小波变换,使层序界面上下的能量团表现出间断的响应特征,在小波系数曲线上则表现为明显的高值震荡特征,而对于基准转换面则主要表现为平直的小波曲线,最终根据小波能谱图纵向能量团的组合特征进行区域对比。与传统方法相比,该方法能有效利用测井信号内部结构信息准确地识别层序界面和进行区域地层对比,且具有高效性和可视化特点。
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| 关 键 词： | 层序地层 能量谱系图 小波分析 测井曲线 地层格架 |
Sequence stratigraphy identification based on wavelet energy spectrum and wavelet curve |
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| Yang Yong-qiang,Qiu Long-wei,Chen Shi-yue , Fu Yu-pu..College of Geoscience , Technology,China University of Petroleum,Qingdao,Sh,ong ,China.Sinopec Exploration & Production Research Institute,Beijing ,China.Sequence stratigraphy identification based on wavelet energy spectrum and wavelet curve[J].Oil Geophysical Prospecting,2011(5):783-789,836,665. |
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| Authors: | Yang Yong-qiang Qiu Long-wei Chen Shi-yue Fu Yu-puCollege of Geoscience Technology China University of Petroleum Qingdao Sh ong ChinaSinopec Exploration & Production Research Institute Beijing China |
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| Affiliation: | Yang Yong-qiang1,Qiu Long-wei1,Chen Shi-yue1 and Fu Yu-pu2.1.College of Geoscience and Technology,China University of Petroleum(East China),Qingdao,Shandong 266555,China2.Sinopec Exploration & Production Research Institute,Beijing 100083,China |
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| Abstract: | Based on time-frequency analysis of wavelet transform,we discuss in this paper the principle of wavelet base selection,and the feasibility and stability of stratigraphic sequence identified by wavelet analysis.We set up wavelet energy spectrum and geological models of sequence stratigraphy divided by wavelet curves.Through wavelet transform of GR,the energy group around sequence boundary represents discrete response features,and show obvious oscillation of high value on the wavelet coefficient curves,wherea... |
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| Keywords: | sequence stratigraphy wavelet energy spectrum wavelet analysis logging curves Strata framework |
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