边缘保真去噪在地震相干体计算中的应用
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摘要
地震相干体技术可以有效地揭示地层的横向变化,如断层、复杂构造等。但当原始地震数据体信噪比较低时,相干体则受噪音影响,其分辨能力较差。为提高其分辨率,将边缘保真去噪方法应用于地震相干体的计算中,即在计算相干体之前,先对原始数据体进行边缘保真去噪处理。结果表明,该方法可有效提高相干体对断层和复杂构造的分辨能力。
Seismic coherence cube technique can effectively reveal the lateral changes of strata,such as fault and complex structure.But when the original seismic data volume has lower signal to noise ratio,the resolution of the coherence cube is poor because of the influence of the noise.In order to improve the resolution,the edge preserving smoothing (EPS) algorithm is applied to the calculation of the coherence cube,which carries out the processing of edge preserving smoothing to the original seismic data volume before the calculation of the coherence cube.The computing result shows that the method could effectively improve the ability of the coherence cube to distinguish the fault from complexstructure.
Seismic coherence cube technique can effectively reveal the lateral changes of strata,such as fault and complex structure.But when the original seismic data volume has lower signal to noise ratio,the resolution of the coherence cube is poor because of the influence of the noise.In order to improve the resolution,the edge preserving smoothing (EPS) algorithm is applied to the calculation of the coherence cube,which carries out the processing of edge preserving smoothing to the original seismic data volume before the calculation of the coherence cube.The computing result shows that the method could effectively improve the ability of the coherence cube to distinguish the fault from complexstructure.
引文
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[15]Gersztenkorn A,Marfurt K J.Eigenstruetur-based coherenee computation as an aid to3-D structural and stratigraphic mapping[J].Geophysics,1999,64(5):1468-1479.
[16]Luo Yi,Marhoon M,Dossary S Al,et al.Edge-preserving smoothing and applications[J].The leading Edge,2002,21(2):136-158.
[17]AlBinHassan N M,Luo Yi,Al-Faraj M N.3D edge-preserving smoothing and applications[J].Geophysics,2006,71(4):5-11.
[2]王威,李臻,田敏,等.岩性-地层油气藏勘探方法技术研究现状及进展[J].岩性油气藏,2009,21(2):121-125.
[3]苑书金.地震相干体技术的研究综述[J].勘探地球物理进展,2007,30(1):7-15.
[4]蔡刚,孙东,裴明利,等.相干体技术及其在油气勘探中的应用[J].天然气地球科学,2006,17(4):510-513.
[5]杨春峰,张宏,田小敏,等.相干数据体处理技巧及在精细构造解释中的应用[J].石油物探,2004,43(增刊):107-109.
[6]马瑾环,陈国俊,吴志高,等.改进的第三代相干算法及应用[J].勘探地球物理进展,2007,30(4):286-296.
[7]熊晓军,尹成,张白林,等.一种新的基于高阶统计量的相干体算法[J].工程地球物理学报,2004,1(3):278-281.
[8]张巧凤,王余庆,王天琦.松辽盆地薄互层河道砂岩地震预测技术[J].岩性油气藏,2007,19(1):92-95.
[9]王西文,杨孔庆,周立宏,等.基于小波变换的地震相干体算法研究[J].地球物理学报,2002,45(6):848-852.
[10]张军华,王月英,赵勇,等.C3相干体在断层和裂缝识别中的应用[J].地震学报,2004,26(5):560-564.
[11]王晋国,宁宇蓉,田丰,等.基于相干数据体的裂隙检测方法[J].长安大学学报(自然科学版),2008,28(1):107-110.
[12]许多年,蒋春玲,潘建国,等.Epos3.0地震解释系统在准噶尔盆地车排子地区火山岩油气勘探中的应用[J].岩性油气藏,2009,21(1):112-114.
[13]Marfurt K J,Scheet R M,Sharp J A,et al.Suppress of the acquisition footprint for seismic sequence attribute mapping[J].Geophysics,1998,63(3):1024-1035.
[14]Marfurt K J,Kirlin R L,Farmer S L,et al.3D seismic attributes using a semblance based coherency algorithm[J].Geophysics,1998,63(4):1150-1165.
[15]Gersztenkorn A,Marfurt K J.Eigenstruetur-based coherenee computation as an aid to3-D structural and stratigraphic mapping[J].Geophysics,1999,64(5):1468-1479.
[16]Luo Yi,Marhoon M,Dossary S Al,et al.Edge-preserving smoothing and applications[J].The leading Edge,2002,21(2):136-158.
[17]AlBinHassan N M,Luo Yi,Al-Faraj M N.3D edge-preserving smoothing and applications[J].Geophysics,2006,71(4):5-11.
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