基于广义S变换的沉积旋回分析方法研究
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摘要
传统时频分析方法(如傅立叶变换、短时傅立叶变换、小波变换、S变换等)的时频分辨性均不佳,在实际应用中受到一些限制,难以满足高精度时频分析要求.广义S变换,引入λ和p两个参数对S变换进行了扩展,其时频分析效果得到较大提高.对广义S变换方法原理进行了深入研究,编写了广义S变换时频分析程序.通过非平稳线性调频信号和4种典型沉积旋回模型分析,证实了广义S变换的可靠性及优越性.最后,将该方法推广到实际地震资料沉积旋回分析中,取得了良好的效果.
The time-frequency resolution of traditional time-frequency analysis methods(such as Fourier transform,short time Fourier transform,wavelet transform,S transformation,etc.) are not high enough,they are very difficult to meet the high-accuracy time-frequency analysis,so their application is limited.Generalized S transfonn(GST),due to introducing X and p parameters to change the window function of S transform,its time-frequency resolution is improved greatly.The GST time-frequency analysis program is written after deeply studying the method of GST.The reliability and superiority of GST are proved by the analysis of non-stationary linear frequency modulation signals and four typical sedimentary cycle models.At last,the method is applied to the sedimentary cycle analysis of actual seismic data,and a good effect is achieved.
The time-frequency resolution of traditional time-frequency analysis methods(such as Fourier transform,short time Fourier transform,wavelet transform,S transformation,etc.) are not high enough,they are very difficult to meet the high-accuracy time-frequency analysis,so their application is limited.Generalized S transfonn(GST),due to introducing X and p parameters to change the window function of S transform,its time-frequency resolution is improved greatly.The GST time-frequency analysis program is written after deeply studying the method of GST.The reliability and superiority of GST are proved by the analysis of non-stationary linear frequency modulation signals and four typical sedimentary cycle models.At last,the method is applied to the sedimentary cycle analysis of actual seismic data,and a good effect is achieved.
引文
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[13]裴海,张建中,黄忠来,等.基于RGB三基色的探地雷达时频谱显示方法[J].西南石油大学学报:自然科学版,2011,33(6):71-74. PEI Hai,ZHAGN Jian-zhong,HUANG Zhong-lai,et al. Display method of time-frequency spectrum of GPR data based on RGB[J].Journal of Southwest Petroleum University: Science & Technology Edition,2011,33(6 ):71- 74.
[14]高志前,樊太亮,尹微,等.塔里木盆地早中寒武世张裂构造及沉积响应[J].西南石油大学学报:自然科学版, 2011,33(3):83-88. GAO Zhi-qian,FAN Tai-liang,YIN Wei,et al.Extensional tectonic characteristics and its sedimentary response of early-middle cambrian in Tarim Basin[J].Journal of Southwest Petroleum University:Science & Technology Edition, 2011,33(3 ):83-88.
[2]吴胜和,杨延强.地下储层表征的不确定性及科学思维方法[J].地球科学与环境学报,2012,34(2): 72-80. WU Sheng-he,YANG Yan-qiang.Uncertainty and scientific methodology in subsurface reservoir characterization [J].Journal of Earth Sciences and Environment,2012,34 (6):72-80.
[3]周怀来,李录明.广义S变换在地震信号特征信息提取中的应用[J].新疆石油地质,2008,29(6):758-760. ZHOU Huai-lai,LI Lu-ming.Application of generalized S transform to extraction of seismic signal characteristic information [J].Xinjiang Petroleum Geology,2008,29(6 ): 758-760.
[4]高静怀,陈文超,李幼铭,等.广义S变换与薄互层地震响应分析[J].地球物理学报,2003,46(4):526-532. GAO Jing-huai,CHEN Wen-chao,LI You-ming,et al. Generalized S transform and seismic response analysis of thin interbeds[J].Chinese Journal of Geophsics,2003,46 (4):526-532.
[5]许平,雷芬丽.时频分析技术在地质薄层识别中的应用[J].工程地球物理学报,2012,9(1):29-33. XV Ping,LEI Fen-li.Application of time-frequency analysis technology to recognition of geological thin-layer[J]. Chinese Journal of Engineering Geophysics,2012,9(1 ): 29-33.
[6]Stockwell R G,Mansinha L,Lowe R P.Localization of the complex spectrum:the S transform.IEEE Tran[J].On Signal Processing,1996,17:998-1001.
[7]刘喜武,刘洪,李幼铭,等.基于广义S变换研究地震地层特征[J].地球物理学进展,2006,21(2):440-451. LIU Xi-wu,LIU Hong,LI You-ming,et al.Study on characteristics of seismic stratigraphy by generalized S transform [J].Progress in Geophysics,2006,21(2 ):440-451.
[8]陈爱萍,邹文.基于S变换的面波压制技术[J].世界地质,2005,24(1):82-86. CHEN Ai-ping,ZOU Wen.Surface wave suppression technique based on S transform[J].Global Geology,2005,24 (1 ):82-86.
[9]Pinnegar C R,Mansinha L.The S transform with windows of arbitrary and varying shape[J].Geophysics,2003,68 (1 ):381-385.
[10]杜金虎,赵邦六,王喜双,等.中国石油物探技术攻关成效及成功做法[J].中国石油勘探,2011,5(6):1-7. DU Jin-hu,ZHAO Bang-liu,WANG Xi-shuang,et al.Achievements and successful experience of petro China in geophysical research[J].China Petroleum Exploration, 2011,5(6):1-7.
[11]刘伟,贺振华,陈学华,等.地震多属性在浊积扇河道砂体识别中的应用[J].西安石油大学学报:自然科学版, ??2011,26(5):6-10. LIU Wei,HE Zhen-hua,CHEN Xue-hua,et al.Application of seismic multi-attributes in the identification of the channel sand in turbidite body[J].Journal of Xi'an Shiyou University: Natural Science Edition,2011,26(5):6-10.
[12]王志亮,周滨,龚旭东,等.高密度高分辨地震勘探技术在渤海PL地区的应用[J].中国石油勘探,2013,5 (2):37-44. WANG Zhi-liang,ZHOU Bin,GONG Xv-dong,et al.Application of high-density and high-resolution seismic exploration technology for PL Zone in Bohai Sea[J].China Petroleum Exploration,2013,5(2):37-44.
[13]裴海,张建中,黄忠来,等.基于RGB三基色的探地雷达时频谱显示方法[J].西南石油大学学报:自然科学版,2011,33(6):71-74. PEI Hai,ZHAGN Jian-zhong,HUANG Zhong-lai,et al. Display method of time-frequency spectrum of GPR data based on RGB[J].Journal of Southwest Petroleum University: Science & Technology Edition,2011,33(6 ):71- 74.
[14]高志前,樊太亮,尹微,等.塔里木盆地早中寒武世张裂构造及沉积响应[J].西南石油大学学报:自然科学版, 2011,33(3):83-88. GAO Zhi-qian,FAN Tai-liang,YIN Wei,et al.Extensional tectonic characteristics and its sedimentary response of early-middle cambrian in Tarim Basin[J].Journal of Southwest Petroleum University:Science & Technology Edition, 2011,33(3 ):83-88.
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