高分辨率相干体分析技术及其应用
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摘要
应用相干分析技术可研究复杂地质构造、断裂发育区、预测裂缝发育带,但传统的相干分析技术有许多局限性.本文给出了一种基于本征值结构的高分辨率相干体分析技术基本原理和关键参数选择方法,通过基于本征值结构的高分辨率相干体属性计算,可获得许多有关断层、微裂缝、岩性和岩相变化等储层重要特征参数,能够更加清晰地描述地质体产状的细微变化,从而为地质学家研究构造的变形及岩性变化等提供强有力的技术手段.传统的相干分析技术与高分辨率相干体分析技术在准噶尔盆地西北缘车排子地区实际地震资料的处理结果对比表明,高分辨率相干体分析技术用于检测断层、裂缝等,效果显著.
Many researchers use coherency analysis technique for studying geologic structures,faults and predicting fracture areas,but traditional methods have some limits.The basic principles of an advanced coherency analysis technique based on eigenvalue and electing methods of key parameters are studied.Many important parameters of reservoirs,such as faults,micro-fractures,lithology and lithologic facies etc.,can be gained and the geologic production situation and microscopic changes can be more clearly described from high-resolution seismic coherence computation based on eigenvalue.So a powerful technical tool can be provided for geologists to research the structural deformation and variation of lithology.The practical processing of seismic data in the Chepaizi region in the Junggar Basin shows that good application result is achieved for the application of the high-resolution coherency analysis method to detect faults and fractures.
Many researchers use coherency analysis technique for studying geologic structures,faults and predicting fracture areas,but traditional methods have some limits.The basic principles of an advanced coherency analysis technique based on eigenvalue and electing methods of key parameters are studied.Many important parameters of reservoirs,such as faults,micro-fractures,lithology and lithologic facies etc.,can be gained and the geologic production situation and microscopic changes can be more clearly described from high-resolution seismic coherence computation based on eigenvalue.So a powerful technical tool can be provided for geologists to research the structural deformation and variation of lithology.The practical processing of seismic data in the Chepaizi region in the Junggar Basin shows that good application result is achieved for the application of the high-resolution coherency analysis method to detect faults and fractures.
引文
[1]王西文,苏明军,刘军迎等.基于小波变换的地震相干的算法及应用[J].石油物探,2002,41(3):334~335.Wang X W,Su M J,Liu J Y,et al.Computation of seismiccoherence cube based on wavelet transform and its application[J].Geophysical prospecting for petroleum,2002,41(3):334~335.
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[6]苏朝光,刘传虎,王军等.相干分析技术在泥岩裂缝油气藏预测中的应用[J].石油物探,2002,41(2):197~201.Su C G,Liu C H,Wang J,Wang Z G.Application of coher-ence analysis technology in the prediction of fractured shalereservoirs and its effect analysis[J].Geophysical Prospectingfor Petroleum,2002,41(2):197~201.
[7]高霞,谢庆宾.储层裂缝识别与评价方法新进展[J].地球物理学进展,2007,22(5):1460~1465.Gao X,Xie Q B.Advances in identification and evaluation offracture[J].Progress in Geophysics,2007,22(5):1460~1465.
[8]刘传虎.地震相干分析技术在裂缝油气藏预测中的应用[J].石油地球物理勘探,2001,36(2):238~244.Liu Chuanhu.Application of seismic coherent analysis technol-ogy to prediction of fractured reservoir[J].Oil geophysicalprospecting,,2001,36(2):238~244.
[9]Bahorich M S,Bridges S R.The seismic sequence attribute map(SSAM)[J].Expanded Abstracts of the 62ndAnnual InternatSEG Meeting,1992,227~230.
[10]Bahorich M S,Farmer S L.3-D seismic coherency for faultsand Stratigraphic features[J].The Leading Edge,1995,14(10):1053~1058.
[11]Marfurt K J,Sudhakar V,Gersztenkorn A,et al.coherencycalculations in the presence of structural dip[J].Geophysics,1999,64(1):104~111.
[2]王怀洪,王秀东,田育鑫.利用相干体技术探测煤矿微小构造方法研究[J].地球物理学进展,2007,22(5):1642~1649.Wang H H,Wang X D,Tian Y X.Study on the method to i-dentify minor structure of coal mines with the coherence tech-nology[J].Progress in Geophysics,2007,22(5):1642~1649.
[3]张军华,王月英,赵勇等.小波多分辨率相干数据体的提取及应用[J].石油地球物理勘探,2004,39(1):33~38.Zhang J H,Wang Y Y,Zhao Y,Huang G P.Detection of co-herent data volume by wavelet multi resolution and application[J].Oil Geophysical Prospecting,2004,39(1):33~38.
[4]宋维琪,刘江华.地震多矢量属性相干数据体计算及应用[J].物探与化探,2003,27(2):225~130.Song W Q,Liu J H.The calculation and application of coher-ence data body of seismic multi-vector attributes[J].Geo-physical and Geochemical Exploration,2003,27(2):225~130.
[5]马丽娟,郑和荣,陈霞.隐蔽油气藏地震预测技术研究新进展[J].地球物理学进展,2007,22(1):294~300.Ma L J,Zhen H R,Chen X.The New progress of seismicforecast technology of Subtle Traps[J].Progress in Geophys-ics,2007,22(1):294~300.
[6]苏朝光,刘传虎,王军等.相干分析技术在泥岩裂缝油气藏预测中的应用[J].石油物探,2002,41(2):197~201.Su C G,Liu C H,Wang J,Wang Z G.Application of coher-ence analysis technology in the prediction of fractured shalereservoirs and its effect analysis[J].Geophysical Prospectingfor Petroleum,2002,41(2):197~201.
[7]高霞,谢庆宾.储层裂缝识别与评价方法新进展[J].地球物理学进展,2007,22(5):1460~1465.Gao X,Xie Q B.Advances in identification and evaluation offracture[J].Progress in Geophysics,2007,22(5):1460~1465.
[8]刘传虎.地震相干分析技术在裂缝油气藏预测中的应用[J].石油地球物理勘探,2001,36(2):238~244.Liu Chuanhu.Application of seismic coherent analysis technol-ogy to prediction of fractured reservoir[J].Oil geophysicalprospecting,,2001,36(2):238~244.
[9]Bahorich M S,Bridges S R.The seismic sequence attribute map(SSAM)[J].Expanded Abstracts of the 62ndAnnual InternatSEG Meeting,1992,227~230.
[10]Bahorich M S,Farmer S L.3-D seismic coherency for faultsand Stratigraphic features[J].The Leading Edge,1995,14(10):1053~1058.
[11]Marfurt K J,Sudhakar V,Gersztenkorn A,et al.coherencycalculations in the presence of structural dip[J].Geophysics,1999,64(1):104~111.
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