西亚北部逆冲推覆带地震资料成像处理的实践
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摘要
西亚TT地区构造落实程度低,山地逆冲推覆构造精确地震成像困难,严重阻碍了该地区的勘探进展。在正演模拟的基础上,系统分析了影响成像质量的主要因素,从表层静校正、子波匹配、速度分析与成像等方面提出了相应的解决措施,展示了连续速度静校正方法、精细速度分析与限制频带剩余速度分析的应用成果,初步形成了针对西亚TT地区逆冲推覆带进行成像的有效技术路线。
TT Block in Northwestern Asia is characterized by poor structure ascertaining and difficult for accurate thrust structure imaging,which seriously hindered the exploration in the area.On the basis of forward modeling,the main factors impacting imaging quality were systematically analyzed,and some countermeasurements were proposed from surface static correction,wavelet matching,velocity analysis and imaging.Then,the application results were displayed,including continuous velocity static correction,fine velocity analysis and band-limited residual velocity analysis.As a result,an effective seismic data imaging procedure for TT Block was preliminarily achieved.
TT Block in Northwestern Asia is characterized by poor structure ascertaining and difficult for accurate thrust structure imaging,which seriously hindered the exploration in the area.On the basis of forward modeling,the main factors impacting imaging quality were systematically analyzed,and some countermeasurements were proposed from surface static correction,wavelet matching,velocity analysis and imaging.Then,the application results were displayed,including continuous velocity static correction,fine velocity analysis and band-limited residual velocity analysis.As a result,an effective seismic data imaging procedure for TT Block was preliminarily achieved.
引文
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[2]阎世信.山地地球物理勘探技术[M].北京:石油工业出版社,2000:1-284
[3]赵殿栋.复杂山前带地震勘探技术研讨会论文集[M].北京:地质出版社,2010:1-186
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