发明名称 |
Fremgangsmåte til filtergenerering for seismisk migrasjon med bruk av remez-algoritmen |
摘要 |
A method for efficiently and accurately producing filter coefficients for wavefield extrapolation which is particularly useful for migrating seismic data using a multiprocessor parallel computer as provided. In 3D seismic migration, the techniques have been developed for 3D processing using 1D extrapolation filters. The present invention uses a Remez-type approximation for developing such extrapolation filters which increases image quality or reduces processing time, or both. Additionally, the method provides an automated method for producing such extrapolation filters which is particularly useful in parallel seismic migration because of the large number of extrapolation filters which must be produced. The automated method of generating filters sets a frequency transition band where the amplitude is specified to be monotonically decreasing which insures stable filter design. |
申请公布号 |
NO963345(D0) |
申请公布日期 |
1996.08.09 |
申请号 |
NO19960003345 |
申请日期 |
1996.08.09 |
申请人 |
SCHLUMBERGER TECHNOLOGY CORP |
发明人 |
ASSA, STEVEN BRENT;RUTLEDGE, JEFFREY MARK |
分类号 |
G01V1/28;(IPC1-7):G01V |
主分类号 |
G01V1/28 |
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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