发明名称 |
THREE-DIMENSIONAL DEGHOSTING |
摘要 |
<p>The method presented accounts for three-dimensional effects when deghosting marine seismic data. The method relies on having second-order spatial derivatives in the cross-line direction available. The second-order cross-line derivative can be estimated directly or through indirect measurements of other wavefield quantities and by using wave-equation techniques to compute the desired term. The method preferably employs either a multicomponent streamer towed in the vicinity of the sea surface, a twin-streamer configuration near the sea-surface, or a configuration of three streamers that are separated either vertically or horizontally to estimate the second-order vertical derivative of pressure.</p> |
申请公布号 |
EP1756621(A1) |
申请公布日期 |
2007.02.28 |
申请号 |
EP20050747114 |
申请日期 |
2005.06.07 |
申请人 |
WESTERNGECO SEISMIC HOLDINGS LIMITED;WESTERNGECO CANADA LIMITED |
发明人 |
ROBERTSSON, JOHAN, OLOF, ANDERS |
分类号 |
G01V1/36;G01V1/38 |
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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