VSP高斯射线束法叠加成像
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摘要
叠加是地震数据处理的核心环节,可以有效地压制噪声提高信噪比。在VSP地震勘探中,常规的叠加方法在复杂构造中成像精度受到极大的限制。文中采用高斯射线束方法对复杂构造进行正演模拟,将得到的波场特征与实际资料波场特征进行对比,调整参数获得合适的速度场;在叠加过程中采用逆高斯的思想,对实际地震资料共炮集数据进行反射波场归位,得到共反射点道集数据,选择合适的面元尺寸进行叠加获得复杂构造的叠加波场特征。通过大量模型测试,VSP高斯束叠加方法可以有效地反演地下结构特征。应用该方法对M地区进行成像研究,结果表明该方法能够准确反演地下结构特征,为数据处理与解释提供依据。
As one of the key steps in seismic data processing,stacking can effectively suppress the noise and improve signal-to-noise ratio. In VSP seismic exploration,the imaging precision of the conventional superposition method is greatly limited in the complex structure. In this paper,the authors used the Gaussian beam method as forward modeling method for complex structure,compared the wave field characteristics of model with features of real data,and obtained the appropriate velocity field through adjusting the parameters. The idea of inverse Gaussian beam was adopted in the process of stacking,the common reflection point gathers were obtained by migrating the reflection wave field of real seismic data to the correct position,and then the stacking field characteristics could be acquired by stacking the data in an appropriate bin size. A large number of model tests show that VSP Gaussian beam stacking method can effectively invert the underground structure characteristics. The method was used in the imaging study of M area,and the results show that this method can accurately invert the underground structure characteristics and provide an accurate basis for seismic data processing and interpretation.
引文
[1]曹映月.射线束叠加—一项广义的预处理技术[J].石油物探译丛,1988:30-50.
    [2]石星,张绪建,梁英.叠前共反射面元叠加成像原理及应用[J].新疆石油地质,2011,32(5):537-540.
    [3]杨锴,王华忠,马在田.共反射面元叠加的应用实践[J].地球物理学报,2004,(2):327-331.
    [4]王华忠,杨锴,马在田.共反射面元叠加的应用理论—从共反射点到共反射面元[J].地球物理学报,2004,(1):137-142.
    [5]邓金华,李栋,王立歆,等.一种改进的共反射面元叠加方法[J].石油物探,2013,53(3):287-293.
    [6]樊鹏军.基于VSP的共反射面叠加成像[D].吉林:吉林大学,2008.
    [7]郭全仕,邬达理,唐金良,等.井间地震反射波成像技术探讨[J].石油物探,2005,44(5):439-444.
    [8]张卫红,徐亦鸣,刘丽.VSP转换波成像技术及实例分析[J].石油物探,2003,42(1):42-48.
    [9]廖茂辉.斜井井间地震反射波成像方法技术研究[D].西安:长安大学,2010.
    [10]蒋振武,吴律.井间地震反射波叠加成像的DLCDP法[J].石油地球物理勘探,1995,30(4):495-504.
    [11]李辉峰,杨飞龙,高云峰.井间地震数据叠加成像方法研究[C]//第二届中国能源科学家论坛论文集,2010:823-828.
    [12]张振波,王建花,李绪宣,等.XSP-CDP井间地震叠加成像方法及其试算效果[J].中国海上油气,2013,25(1):24-27.
    [13]谢飞,李佩,黄中玉,等.高斯射线束叠前深度偏移成像研究[J].石油物探,2013,52(1):65-71.
    [14]李辉,冯波,王华忠.波场模拟的高斯波包叠加方法[J].石油物探,2012,51(4):327-337.
    [15]李瑞忠,杨长春,陈辉国.高斯射线束方法及应用[J].地球物理学进展,2006,21(3):739-745.
    [16]Cerveny V.Seismic Ray Theory[M].New York:Cambridge Univ.Press,2001.
    [17]Popov M.Ray theory and gaussian beam method for geophysicists[M].Salvador:Editora da Universidade Federal da Bahia,2002.
    [18]朱光明.垂直地震剖面方法[M].北京:石油工业出版社,1988.
    [19]裴正林,牟永光.地震波传播的数值模拟[J].地球物理学进展,2004,19(4):933-941.
    [20]周绪文.反射波地震勘探方法[M].北京:石油工业出版社,1989:323-333.
    [21]张晴,李振春.高斯波束逆时偏移[J].中国地球物理,2012.
    [22]黄建平,张晴,李振春,等.格林函数高斯束逆时偏移[J].石油地球物理勘探,2014,49(1):101-106.
    [23]Hubral.Macro model independent seismic reflection imaging[J].J.Appl.Geoph.,1999,(42):3-4.
    [24]孙治国.变偏VSP技术在油田开发区块中的应用研究[D].长安大学,2008.
    [25]刘守伟,王华忠,陈生昌,等.VSP上下行反射波联合成像方法研究[J].地球物理学报,2012,55(9):3126-3133.

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