基于地震振幅谱分维数的油气预测软件系统研制
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摘要
【目的】地震油气预测技术在油气勘探开发中发挥着越来越重要的作用,利用吸收系数地震属性进行油气预测技术在国内外已取得较大进展。【方法】使用非平稳地震信号谱分析的时频分析技术计算地震信号的时频剖面,并从中提取与吸收衰减有关的特征参数,是吸收衰减研究的一个重要方向。与吸收衰减关系紧密的时频谱属性有衰减梯度、振幅谱分维数、高频能量及平均频率等。【结果】我们把振幅谱分维数与广义S变换时频分析技术结合起来,提出了振幅谱曲线的Mandelbrot分维数,使得它们具有了瞬时特性,可以很好地进行油气预测。【结论】经实际工区验证,利用振幅谱曲线的Mandelbrot分维数法开展油气检测具有较高的预测精度。
[Objectives]Seismic hydrocarbon prediction technology plays an increasingly important role in oil and gas exploration and development,Oil and gas prediction technology using the seismic attribute of absorption coefficient has made great progress both at home and abroad.[Methodology]Using the time-frequency analysis of non-stationary seismic signal spectrum to calculate the time-frequency profile of seismic signals and extracting the characteristic parameters related to absorption and attenuation is an important direction of absorption and attenuation research.Time-frequency spectrum properties closely related to absorption and attenuation include attenuation gradient, fractal dimension of amplitude spectrum,high-frequency energy and average frequency.[Results]We combine the fractal dimension of amplitude spectrum with the time-frequency analysis technique of generalized S transform, and propose the Mandelbrot fractal dimension of the amplitude spectrum curve, which makes them have instantaneous properties and can well predict oil and gas.[Conclusions]The actual work area verification, the use of amplitude spectrum curve Mandelbrot fractal dimension method to carry out oil and gas detection with high prediction accuracy.
[Objectives]Seismic hydrocarbon prediction technology plays an increasingly important role in oil and gas exploration and development,Oil and gas prediction technology using the seismic attribute of absorption coefficient has made great progress both at home and abroad.[Methodology]Using the time-frequency analysis of non-stationary seismic signal spectrum to calculate the time-frequency profile of seismic signals and extracting the characteristic parameters related to absorption and attenuation is an important direction of absorption and attenuation research.Time-frequency spectrum properties closely related to absorption and attenuation include attenuation gradient, fractal dimension of amplitude spectrum,high-frequency energy and average frequency.[Results]We combine the fractal dimension of amplitude spectrum with the time-frequency analysis technique of generalized S transform, and propose the Mandelbrot fractal dimension of the amplitude spectrum curve, which makes them have instantaneous properties and can well predict oil and gas.[Conclusions]The actual work area verification, the use of amplitude spectrum curve Mandelbrot fractal dimension method to carry out oil and gas detection with high prediction accuracy.
引文
[1]高建虎,雍学善,刘洪,等.叠后地震油气检测技术与应用.石油物探,2006,45(4):385~389.
[2]张会星,何兵寿,姜效典,等.利用地震波在双相介质中的衰减特性检测油气.石油地球物理勘探,2010,45(3):343~349.
[3]许多,李显贵,刘殊,等.合兴场地震资料吸收油气预测研究.物探化探计算技术,2000,22(1):56~57.
[4]刘企英.用频谱比法提取衰减吸收信息.石油地球物理勘探,1987,22(5):529~544.
[5]边树涛,董艳蕾,郑浚茂,等.地震波频谱衰减检测天然气技术应用研究.石油地球物理勘探,2007,42(3):296~300.
[6]陈学华,贺振华,黄德济,等.时频域油气储层低频阴影检测.地球物理学报,2009,52(1):215~221.
[7]Raúl Del Valle-García,Luis Ramírez-Cruz.Spectral attributes for attenuation analysis in a fractured carbonate reservoir.The Leading Edge,October 2002,1038~1041.
[8]刘喜武,张宁,勾永峰,等.地震勘探信号时频分析方法对比与应用分析.地球物理学进展,2008,23(3):743~753.
[9]Castagna J P,Sun S,Siegfried R W.Instantaneous spectral analysis:Detection Of low-frequency shadows associated with hydrocarbons.The Leading Edge,2003,22(2):120~127.
[10]Korneev V A,Goloshubin G M,Daley T M,et a1.Seismic low frequency effects in monitoring fluid-saturated reservoirs.Geophysics,2004,69(2):522~532.
[11]Ebrom Dan.The low-frequency gas shadow on seismic sections.The Leading Edge,2004,23(8):772.
[12]勾永峰,王建民,董建萍,等.基于广义S变换的吸收衰减地震属性在油气预测中的应用.石油地球物理勘探,2012,物探技术研讨会专刊:38~41.
[13]刘喜武,刘洪,李幼铭,等.基于广义S变换研究地震地层特征.地球物理学进展,2006,21(2):440~451.
[14]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.地球物理学报,2003,46(4):526~532.
[15]陈学华,贺振华,等.改进的S变换及在地震信号处理中的应用.数据采集与处理,2005,20(4):449~453.
[2]张会星,何兵寿,姜效典,等.利用地震波在双相介质中的衰减特性检测油气.石油地球物理勘探,2010,45(3):343~349.
[3]许多,李显贵,刘殊,等.合兴场地震资料吸收油气预测研究.物探化探计算技术,2000,22(1):56~57.
[4]刘企英.用频谱比法提取衰减吸收信息.石油地球物理勘探,1987,22(5):529~544.
[5]边树涛,董艳蕾,郑浚茂,等.地震波频谱衰减检测天然气技术应用研究.石油地球物理勘探,2007,42(3):296~300.
[6]陈学华,贺振华,黄德济,等.时频域油气储层低频阴影检测.地球物理学报,2009,52(1):215~221.
[7]Raúl Del Valle-García,Luis Ramírez-Cruz.Spectral attributes for attenuation analysis in a fractured carbonate reservoir.The Leading Edge,October 2002,1038~1041.
[8]刘喜武,张宁,勾永峰,等.地震勘探信号时频分析方法对比与应用分析.地球物理学进展,2008,23(3):743~753.
[9]Castagna J P,Sun S,Siegfried R W.Instantaneous spectral analysis:Detection Of low-frequency shadows associated with hydrocarbons.The Leading Edge,2003,22(2):120~127.
[10]Korneev V A,Goloshubin G M,Daley T M,et a1.Seismic low frequency effects in monitoring fluid-saturated reservoirs.Geophysics,2004,69(2):522~532.
[11]Ebrom Dan.The low-frequency gas shadow on seismic sections.The Leading Edge,2004,23(8):772.
[12]勾永峰,王建民,董建萍,等.基于广义S变换的吸收衰减地震属性在油气预测中的应用.石油地球物理勘探,2012,物探技术研讨会专刊:38~41.
[13]刘喜武,刘洪,李幼铭,等.基于广义S变换研究地震地层特征.地球物理学进展,2006,21(2):440~451.
[14]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.地球物理学报,2003,46(4):526~532.
[15]陈学华,贺振华,等.改进的S变换及在地震信号处理中的应用.数据采集与处理,2005,20(4):449~453.