叠前时间偏移技术在构造复杂区地震处理中的应用

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英文篇名：THE APPLICATION OF PRE-STACK TIME MIGRATION TECHNOLOGY TO COALFIELD SEISMIC DATA PROCESSING IN STRUCTURALLY-COMPLEX AREA 中文刊名：物探与化探 英文刊名：Geophysical and Geochemical Exploration 作者：王军 ; 杜琦伟 ; 牛晓辰 英文作者：WANG Jun ; DU Qi-wei ; NIU Xiao-cheng (Shanxi Institute of Coal Geology and Geophysical Surveying and Mapping ; Yuci 030600 ; China) 中文关键词：叠前时间偏移 ; 信噪比 ; 分辨率 ; 复杂地质构造区 ; 地震处理 英文关键词：pre-stack time migration ; signal-to-noise ratio ; resolution ; structurally-complex area ; seismic data processing 出版日期：2012-10-15 机构：山西省煤炭地质物探测绘院; 年：2012 期：S1 出版单位：物探与化探

摘要

叠前时间偏移是复杂构造成像最有效的方法之一,能适应纵横向速度变化较大的情况,适用于大倾角的偏移成像。笔者结合实例探讨叠前时间偏移技术在复杂构造区煤层地震资料处理中应注意的问题。结果表明:叠前时间偏移技术能够有效地提高复杂构造区煤层的成像效果,提高煤田地震资料的信噪比和分辨率。
The pre-stack time migration technology is one of the effective means for imaging of complex structure.It can be adapted to the condition of relatively rapid longitudinal and transverse variation and is suitable for migration imaging with large dip angles.With examples,the authors discuss the problems which deserve attention in using the pre-stack time migration technology to conduct coalfield seismic data processing in the structurally-complex area.The results demonstrate that this technology can effectively improve imaging effect of coal seams in structurally-complicated areas and raise coalfield seismic data signal-to-noise ratio and resolution.

引文

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