Wave-equation based migration of primaries and free-surface multiples simultaneously with artifact suppressing
作者: Yueming YeHaoran RenQingxin GuoLisheng Li
作者单位: 1Petro China HangZhou Research Institute of Geology, Hangzhou 310023, People’s Republic of China
2Zhejiang University, Hangzhou 310027, People’s Republic of China
刊名: Journal of Geophysics and Engineering, 2018, Vol.15 (6)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1742-2140/aac997
原始语种摘要: Free-surface related multiples exist widely in marine seismic data. Imaging with multiples rather than suppression has particular benefits because multiples have more information than primaries, such as wider illumination and higher vertical resolution. One-way wave-equation based pre-stack depth migration (OWPSDM) is an effective imaging tool with high calculation efficiency. By using an OWPSDM operator, primaries and multiples are imaged simultaneously. The artifacts caused by the cross-correlation between forward-propagated source and backward-propagated multiples can be suppressed by an approach with the following three steps: for the first step, the source is replaced by the recorded field data together with a wavelet and the data is the recorded field data. The imaging results...
全文获取路径: IOP  (合作)
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关键词翻译
关键词翻译
  • artifact 人工产物
  • multiples 多倍厚板
  • illumination 光照强度
  • primaries 比较原色
  • wavelet 波涟
  • subtraction 减法
  • imaging 图像形成
  • simultaneously 同时地
  • migration 迁移
  • image