发明名称 |
Method for correcting seismic data to a datum |
摘要 |
<p>Disclosed is a method for processing geophysical data that have been gathered over irregular topography. According to the method, a datum is established that lies above the highest topographic peak. The data are time-shifted from the surface to the datum using a replacement velocity that is an extrapolation of the underlying formation velocity. The wavefields beneath the surface are forwardly modeled using a modeling velocity substantially equal to zero. Between the surface and the datum, the wavefields are upwardly modeled using the replacement velocity. <IMAGE></p> |
申请公布号 |
EP0632293(B1) |
申请公布日期 |
1999.01.13 |
申请号 |
EP19940304611 |
申请日期 |
1994.06.24 |
申请人 |
WESTERN ATLAS INTERNATIONAL, INC. |
发明人 |
MACKAY, SCOTT W. |
分类号 |
G01V1/36;(IPC1-7):G01V1/36 |
主分类号 |
G01V1/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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