西亚北部逆冲推覆带地震资料成像处理的实践

Practice of seismic imaging on thrust belt in Northwest Asia

(中国石油化工股份有限公司石油勘探开发研究院,北京100083)

Zhu Chenghong,Sinopec Exploration & Production Research Institute,Beijing 100083,China

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.

10.3969/j.issn.1000-1441.2011.06.003