发明授权
US5640368A Migration velocity analysis using limited-aperture and monte carlo
migration
失效
使用有限孔径和蒙特卡罗迁移的迁移速度分析
- 专利标题： Migration velocity analysis using limited-aperture and monte carlo migration
- 专利标题（中）： 使用有限孔径和蒙特卡罗迁移的迁移速度分析
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申请号： US97817申请日： 1993-07-26
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公开(公告)号： US5640368A公开(公告)日： 1997-06-17
- 发明人: Jerome R. Krebs
- 申请人： Jerome R. Krebs
- 申请人地址： TX Houston
- 专利权人： Exxon Production Research Company
- 当前专利权人： Exxon Production Research Company
- 当前专利权人地址： TX Houston
- 主分类号： G01V1/30
- IPC分类号： G01V1/30 ; G01V1/36
摘要：
Disclosed is a method for efficiently and accurately determining subsurface velocities for use in migration of seismic data. The method calls for restricting the number of traces considered to those lying upon that portion of the Kirchhoff summation curve wherein the integrand for Kirchhoff migration is smooth. In the preferred embodiment, only a random sample of traces within this aperture are used in the calculations. Improvements in efficiency on the order of a factor of 1000 can be realized with the preferred embodiment.
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