地震剖面匹配闭合差校正
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摘要
当用不同施工时期采集的地震剖面对同一地区进行综合对比解释时,可能会遇到相交剖面产生闭合差情况。通常这些闭合差是由于激发因素、接收条件的不同,导致交叉点上振幅、时间及相位存在差异造成的,这将给地震资料的综合解释带来不便。因此,随着四维地震技术的推广,做好地震剖面的匹配校正是一件很有意义的工作。这里给出了2D地震测线上各个交点的振幅、时间和相位差匹配校正的原理公式,利用迭代最小平方算法,通过模型试算,详细阐述匹配流程并进行了效果分析。
The seismic profile mis-ties at the intersections may be involved with amplitude gaining,time shifting,or phase rotation.And they are also caused by different conditions of data acquisition and data processing.With the development of 4D seismic technique,the mis-tie correction is an important task since the mis-ties make comprehensive interpretation inaccurate.In this paper,we firstly describe the theory and algorithms to compute seismic amplitudes,time and phase differences at each intersection point,then give some mis-tie correction results through synthetic and real seismic data.The results show that the presented mis-tie correction methods are correct and efficient.
The seismic profile mis-ties at the intersections may be involved with amplitude gaining,time shifting,or phase rotation.And they are also caused by different conditions of data acquisition and data processing.With the development of 4D seismic technique,the mis-tie correction is an important task since the mis-ties make comprehensive interpretation inaccurate.In this paper,we firstly describe the theory and algorithms to compute seismic amplitudes,time and phase differences at each intersection point,then give some mis-tie correction results through synthetic and real seismic data.The results show that the presented mis-tie correction methods are correct and efficient.
引文
[1]段云卿·匹配滤波与子波整形[J]·石油地球物理勘探,2006,41(2):156·
[2]洪学海·相匹配滤波与频率域维纳滤波结合在地震信号处理中的应用[J]·数值计算与计算机应用,2004,(1):3·
[3]袁修贵,宋守根,张建贵,等·多分辨迭后地震记录频率振幅补偿方法[J]·中南工业大学学报,2001,32(3):224·
[4]甘利灯,姚逢昌,邹才能,等·水驱四维地震技术一叠后互均化处理[J]·勘探地球物理进展,2003,26(1):54·
[5]THOMAS N,BISHOP ALAN,G.NURMS.Correcting amplitude,time,and phase mis-ties in seismic data[J].Geophysics,1994,59(6):946·
[6]陈德刚,周开明,夏洪瑞·地震数据中振幅、时间、相位的闭合差校正[J]·江汉石油科技,2003,13(3):27·
[7]孔炜,刘国明,孙慧斌,等·二维地震剖面的时间、振幅及相位最小平方校正[J]·石油地球物理勘探,1998,33(增刊):150·
[8]钱利,赵铁枫·塔中地区二维偏移测线闭合差校正方法研究[J]·内蒙古石油化工,2004,130:110·
[2]洪学海·相匹配滤波与频率域维纳滤波结合在地震信号处理中的应用[J]·数值计算与计算机应用,2004,(1):3·
[3]袁修贵,宋守根,张建贵,等·多分辨迭后地震记录频率振幅补偿方法[J]·中南工业大学学报,2001,32(3):224·
[4]甘利灯,姚逢昌,邹才能,等·水驱四维地震技术一叠后互均化处理[J]·勘探地球物理进展,2003,26(1):54·
[5]THOMAS N,BISHOP ALAN,G.NURMS.Correcting amplitude,time,and phase mis-ties in seismic data[J].Geophysics,1994,59(6):946·
[6]陈德刚,周开明,夏洪瑞·地震数据中振幅、时间、相位的闭合差校正[J]·江汉石油科技,2003,13(3):27·
[7]孔炜,刘国明,孙慧斌,等·二维地震剖面的时间、振幅及相位最小平方校正[J]·石油地球物理勘探,1998,33(增刊):150·
[8]钱利,赵铁枫·塔中地区二维偏移测线闭合差校正方法研究[J]·内蒙古石油化工,2004,130:110·
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