Based on a previous 2D seismic survey in offshore Sierra Leone and Liberia revealing the exploration potential of the margin, a 3D long offset survey in deepwater Sierra Leone was acquired in 2008....
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The Laptev Sea region is one of the remote and geologically complex areas of Russian Eastern Arctic. According to the existing seismic data, a number of large offshore sedimentary basins with...
Despite being at the end of a long and full Annual Meeting week, the workshop “Full wave-equation methods for complex imaging challenges,” held 30 October 2009, drew an audience which filled the...
Extensive thick sequences of basalt dominate the northwest flank of the Faroe Shetland Basin. Recent reprocessing of this long offset data dramatically improves the interpretability of the sub-basalt...
Multiple reflections are commonly treated as noise in oneway imaging methods. High effort is put into research and data processing worldwide in an effort to suppress this source of noise. In a new...
Reverse time migration (RTM) is well suited for imaging steep dips in areas with high velocity contrast. In order to image steep dips at the correct positions, anisotropy has to be taken into...
Imaging of subsalt sediments is a challenge for traditional migration methods such as Kirchhoff and one-way waveequation migration. Consequently, the more accurate twoway method of reverse-time...
Subsalt wave-equation based migration (WEM) scan is an effective way for subsalt velocity updating, and has become an industry standard practice; however, the cost of generating migration scan is...
A new salt velocity model building methodology is proposed which allows effective testing of different salt interpretation scenarios. In this methodology, we combine the strength of efficiency from...
There has been a continually expanding interest in wide azimuth (WAZ) data in all its variations. We are now challenged to take full advantage of the additional information available with minimal...