静校正对比流程与叠加速度修正方法
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摘要
为了找到一种最适合的静校正方法与参数,不同静校正方法和参数计算的静校正量常被用于同一个地震数据进行测试,并依据叠加剖面质量来判断静校正量的优劣。合理的对比流程对静校正量的客观评价至关重要。分析了与静校正相关的影响叠加剖面质量的因素,指出除了静校正量外,叠加剖面质量还与叠加速度关系密切,而叠加速度又是静校正量的函数。给出了一种比较合理的静校正对比流程,其中采用了与各自静校正量相适应的叠加速度。认为基于另一套静校正量的叠加速度分析结果,不一定适合应用了当前静校正量的地震数据,叠加结果并不一定能代表当前静校正量的实际效果。分析了静校正量与叠加速度间的关系,提出了一种利用静校正量差异对叠加速度进行修正的方法并用实例说明了应用效果。
In order to select most suitable method and parameters to carry out static correction,the statics calculated by different static correction methods and parameters is often used to the same seismic data,and is judged in terms of the quality of stacking profiles.Reasonable comparison workflow is very important for objective evaluation on statics.Therefore,we analyze the factors influencing on the quality of stacking profiles related to static correction,and point out that the quality of stacking profile also has close relationship with stacking velocity(stacking velocity is also the function of statics).From this point,we propose more reasonable statics comparison workflow,which adopts the stacking velocity fitting with its own statics.The analysis result shows that the stacking velocity based on one set of statics maybe not suitable to the seismic data adopting the current statics,and the stacking results maybe not represent the actual effect of the current statics.The relationship between statics and stacking velocity is analyzed.Moreover,a method to modify stacking velocity by the contrast of statics is proposed,and has been proved its feasibility by the application on actual data.
In order to select most suitable method and parameters to carry out static correction,the statics calculated by different static correction methods and parameters is often used to the same seismic data,and is judged in terms of the quality of stacking profiles.Reasonable comparison workflow is very important for objective evaluation on statics.Therefore,we analyze the factors influencing on the quality of stacking profiles related to static correction,and point out that the quality of stacking profile also has close relationship with stacking velocity(stacking velocity is also the function of statics).From this point,we propose more reasonable statics comparison workflow,which adopts the stacking velocity fitting with its own statics.The analysis result shows that the stacking velocity based on one set of statics maybe not suitable to the seismic data adopting the current statics,and the stacking results maybe not represent the actual effect of the current statics.The relationship between statics and stacking velocity is analyzed.Moreover,a method to modify stacking velocity by the contrast of statics is proposed,and has been proved its feasibility by the application on actual data.
引文
[1]Mike C.反射地震勘探静校正技术[M].李培明,柯本喜,译.北京:石油工业出版社,2004:43-100Mike C.Static corrections for seismic reflection sur-veys[M].Li P M,Ke B X,translator.Beijing:Petro-leum Industry Press,2004:43-100
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[10]林伯香,孙晶梅,刘起弘,等.关于浮动基准面概念的讨论[J].石油物探,2005,44(1):94-97Lin B X,Sun J M,Liu Q H,et al.Discussion to theconcept of the floating datum[J].Geophysical Pros-pecting for Petroleum,2005,44(1):94-97
[2]Marsden D.Static corrections:a review(part I)[J].The Leading Edge,1993,12(1):43-49
[3]Marsden D.Static corrections:a review(part II)[J].The Leading Edge,1993,12(2):115-120
[4]林伯香.孙晶梅,徐颖,等.几种常用静校正方法的讨论[J].石油物探,2006,45(4):366-372Lin B X,Sun J M,Xu Y,et al.Static correction ap-proaches being frequently applied[J].GeophysicalProspecting for Petroleum,2006,45(4):366-372
[5]李录明,罗省贤.复杂三维表层模型层析反演和静校正[J].石油地球物理勘探,2003,38(6):636-641Li L M,Luo X X.Tomographic inversion for 3Dcom-plex near-surface model and static correction[J].Oil Ge-ophysical Prospecting,2003,38(6):636-641
[6]林伯香,孙晶梅,刘清林.层析成像低速带速度反演和静校正方法[J].石油物探,2002,41(2):136-140Lin B X,Sun J M,Liu Q L.Tomography for LVZvelocity inversion and statics[J].Geophysical Pros-pecting for Petroleum,2002,41(2):136-140
[7]冯泽元,李培民,唐海忠,等.利用层析反演技术解决山地复杂区静校正问题[J].石油物探,2005,44(3):454-457Feng Z Y,Li P M,Tang H Z,et al.Sloving the staticcorrection problem in mountain complex block usingtomographic inversion[J].Geophysical Prospectingfor Petroleum[J],2005,44(3):454-457
[8]王彦春,余钦范,李峰,等.交互迭代静校正方法[J].石油物探,1998,37(2):63-70Wang Y C,Yu Q F,Li F,et al.The method of staticcorrection by interactive iteration[J].GeophysicalProspecting for Petroleum,1998,37(2):63-67
[9]林依华,张中杰,尹成,等.复杂地形条件下静校正的综合寻优[J].地球物理学报,2003,46(1):101-106Lin Y H,Zhang Z J,Yin C,et al.Hybrid optimiza-tion of static estimation in complex topography[J].Chinese Journal of Geophysics,2003,46(1):101-106
[10]林伯香,孙晶梅,刘起弘,等.关于浮动基准面概念的讨论[J].石油物探,2005,44(1):94-97Lin B X,Sun J M,Liu Q H,et al.Discussion to theconcept of the floating datum[J].Geophysical Pros-pecting for Petroleum,2005,44(1):94-97
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