谱分解技术及其在井间储层解释中的应用
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摘要
谱分解技术将一个短时窗内的地震数据通过离散的傅立叶变换或最大熵谱估计转换为频率域,去除子波的影响后,利用频率—振幅谱来识别薄层和不连续地质体的边界。运用该技术在樊124井区含油层系准确地描述出河道砂分布,并利用不同频率切片描述出河道砂体的边界,为该区精细解释提供了依据。
A spectrum decomposition technique transforms the seismic data into frequency domain via the DFT or maximum entropy method in a short time window, delineates thin bed and the boundaries of discontinuous geologic bodies by analyzing the amplitude spectrum after removing the wavelet overprint. The distribution of fluvial channel sands in the hydrocarbon reservoir assemblage in Fan 124 well area were delineated by using the technique, the basis were provided for the fine interpretation in this area.
A spectrum decomposition technique transforms the seismic data into frequency domain via the DFT or maximum entropy method in a short time window, delineates thin bed and the boundaries of discontinuous geologic bodies by analyzing the amplitude spectrum after removing the wavelet overprint. The distribution of fluvial channel sands in the hydrocarbon reservoir assemblage in Fan 124 well area were delineated by using the technique, the basis were provided for the fine interpretation in this area.
引文
[1]刘合,王玉普等.国外井间地震技术.北京:石油工业出版社,1998
[2]邢正岩,刘磊等.井间地震资料属性分析与储层参数转换.石油地球物理勘探,2004,39(2):127￣132
[3]刘震.储层地震地层学.北京:地质出版社,1997:182￣186
[4]张忠伟,马劲风,李合群译.频谱分解在油藏描述中的解释性应用.国外油气勘探,2001,12(1):94￣101
[5]G reg Partyka,Jam es G ridley and John Lopez.Interpretational ap plications of spectral decom position in reservoir characteriza tion.The Leading Edge,1999,18(3):353￣360
[6]周玉山译.用新的3D地震技术解释切割河谷:频谱分解和相干技术的勘探实例.石油物探译丛,1999,17(1):41￣46
[2]邢正岩,刘磊等.井间地震资料属性分析与储层参数转换.石油地球物理勘探,2004,39(2):127￣132
[3]刘震.储层地震地层学.北京:地质出版社,1997:182￣186
[4]张忠伟,马劲风,李合群译.频谱分解在油藏描述中的解释性应用.国外油气勘探,2001,12(1):94￣101
[5]G reg Partyka,Jam es G ridley and John Lopez.Interpretational ap plications of spectral decom position in reservoir characteriza tion.The Leading Edge,1999,18(3):353￣360
[6]周玉山译.用新的3D地震技术解释切割河谷:频谱分解和相干技术的勘探实例.石油物探译丛,1999,17(1):41￣46
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