发明名称 |
Datamaskinimplementert fremgangsmåte for prosessering av marine seismiske data, datamaskinapparat, et lagringsmedium og fremgangsmåte for seismisk undersøkelse |
摘要 |
A method of determining seismic properties of a layer of the seabed, in particular a surface or near-surface layer ( 5 ), comprises directing seismic energy propagating in a first mode at a boundary face of the layer so as to cause partial mode conversion of the seismic energy at the boundary face. For example partial mode conversion may occur when seismic energy propagates upwards through the interface between a surface or near-surface layer ( 5 ) and the basement ( 6 ), owing to the difference in seismic properties between the surface or near-surface layer ( 5 ) and the basement ( 6 ). In the invention, the two modes of seismic energy-that is the initial mode and the mode generated by mode conversions at the interface-are received at a receiver. The difference in travel time of the two modes between the interface and the receiver is determined from the seismic data acquired by the receiver. |
申请公布号 |
NO334087(B1) |
申请公布日期 |
2013.12.09 |
申请号 |
NO20030003311 |
申请日期 |
2003.07.22 |
申请人 |
WESTERN GECO SEISMIC HOLDINGS LTD |
发明人 |
ROBERTSSON JOHAN OLOF ANDERS;CURTIS ANDREW;MANEN DIRK-JAN VAN |
分类号 |
G01V1/28 |
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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