基于改进的希尔伯特——黄变换的岩性油藏识别方法
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
引入归一化处理方案改进希尔伯特黄变换(HHT),可使通过HHT获得的瞬时属性更能体现信号的本质变化特征。文中首先介绍了改进的HHT法的基本原理和分解过程,在此基础上计算地震信号的"三瞬"参数;其次,分析对比了改进HHT法、常规HHT法重构的瞬时振幅和从原始信号提取的瞬时振幅,得知改进HHT法重构的瞬时振幅对油层反应最敏感;然后,利用改进HHT法从春光油田实际三维叠后地震数据中提取瞬时振幅属性,该属性值的纵横向分辨率更高,可更清晰地刻画岩性油藏边界,且与研究区已知钻井、测井、试气等资料相吻合。因此,本文的改进HHT法能更有效地体现岩性油藏储层变化特征。
We propose in the paper lithologic reservoir identification based on the improved Hilbert-Huang transform(HHT).Seismic instantaneous attributes obtained by the improved HHT reflect better seismic signal characteristics.In this paper,we first introduce the normalized processing to HHT,and its basic principles and decomposition;based on which,we calculate"three instantaneous"parameters of seismic signals.Then we analyze the instantaneous amplitudes reconstructed by HHT,the improved HHT,and original seismic signal respectively.The comparison of these three results shows that instantaneous amplitude reconstructed by the improved HHT is most sensitive to reservoirs.Finally we apply the improved HHT approach to field data in Chunguang Oilfield,and extract higher-resolution instantaneous amplitude attribute.This attribute delineates clearly lithologic reservoir boundaries which coincide with the drilling data and logging data.Therefore we believe that the proposed approach in this paper can more effectively describe lithologic reservoirs.
引文
[1]Huang N E,Shen Z,Long S R.The empirical mode decomposition and the Hilbert spectrum for nonlinear and non-stationary time series analysis.Proceedings of the Royal Society A:Mathematical,Physical and Engineering Sciences,1998,454(1971):903-995.
    [2]Wen Xiaotao,He Zhenhua,Huang Deji.Reservoir detection based on EMD and correlation dimension.Applied Geophysics,2009,6(1):70-76.
    [3]Huang Yaping,Geng Jianhua,Zhong Guangfa.Seismic attribute extraction based on HHT and its application in a marine carbonate area.Applied Geophysics,2011,8(2):125-133.
    [4]Xue Yajuan,Cao Junxing,Tian Renfei.A comparative study on hydrocarbon detection using three EMDbased time-frequency analysis methods.Journal of Applied Geophysics,2013,89(2):108-115.
    [5]Chen C S,Jeng Y.Natural logarithm transformed EEMD instantaneous attributes of reflection data.Journal of Applied Geophysics,2013,95(8):53-65.
    [6]杨培杰,印兴耀,张广智.希尔伯特黄变换地震信号时频分析与属性提取.地球物理学进展,2007,22(5):1585-1590.Yang Peijie,Yin Xingyao,Zhang Guangzhi.Seismic signal time-frequency analysis and attributes extraction based on HHT.Progress in Geophysics,2007,22(5):1585-1590.
    [7]曹思远,邴萍萍,路交通等.利用改进希尔伯特黄变换进行地震资料时频分析.石油地球物理勘探,2013,48(2):246-254.Cao Siyuan,Bing Pingping,Lu Jiaotong et al.Seismic data time-frequency analysis by the improved HilbertHuang transform.OGP,48(2):246-254.
    [8]Nuttall A H,Bedrosian E.On the quadrature approximation to the Hilbert transform of modulated signals.Proceedings of the IEEE,1966,54(10):1458-1459.
    [9]董臣强,王军.准噶尔盆地车排子地区新近系沙湾组一砂组油层地震特征分析.石油地球物理勘探,2007,42(4):445-447.Dong Chenqiang,Wang Jun.Analysis on seismic feature of reservoir in Neogene Shawan Formation first oil-sand layer in Chepaizi area of Junggar basin.OGP,2007,42(4):445-447.
    [10]陈轩,张尚锋,张昌民等.准噶尔盆地车排子地区新近系沙湾组层序地层.新疆石油地质,2008,29(1):65-67.Chen Xuan,Zhang Shangfeng,Zhang Changmin et al.Sequence stratigraphy of Neogene Shawan Formation in Chepaizi area,Junggar Basin.Xinjiang Petroleum Geology,2008,29(1):65-67.
    [11]穆玉庆.岩性油藏地震描述技术在准噶尔盆地春光油田的应用.海相油气地质,2010,15(4):68-73.Mu Yuqing.Application of seismic description technique for lithologic reservoir in Chunguang Oil Field,Junggar Basin.Marine Origin Petroleum Geology,2010,15(4):68-73.
    [12]刘传虎.准噶尔盆地隐蔽油气藏类型及有利勘探区带.石油实验地质,2014,36(1):25-32.Liu Chuanhu.Subtle reservoir type and favorable exploration belts in Junggar Basin.Petroleum Geology&Experiment,2014,36(1):25-32.

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心