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Reducing Sub-salt Uncertainty - A North Sea RTM Case StudyNormal access

Authors: V. Valler, M. Vrijlandt, T. Gasiorowski, A. Ratering, B. Cox and J.K. Fruehn
Event name: 75th EAGE Conference & Exhibition incorporating SPE EUROPEC 2013
Session: Imaging in Challenging Areas
Publication date: 10 June 2013
DOI: 10.3997/2214-4609.20130417
Organisations: EAGE
Language: English
Info: Extended abstract, PDF ( 2.03Mb )
Price: € 20

Summary:
Reliability in imagining is key to successful well placement, and finding an optimal balance between acquisition effort and imaging strategy is central in this. With this in-mind, we note that the continued evolution in acquisition practice over the past decades, in conjunction with improvements in processing methodology have aided our ability to reduce risk via more reliable interpretation of the images being delivered from seismic data processing projects. In this case study from the North Sea, we compare results from three vintages of data both in terms of the acquisition and the imaging strategy used, culminating in a recent RTM imaging project over the prospective area, which benefitted from a rapid scenario testing technique to iteratively and interactively update RTM images. We show the steady improvement in both image quality and reliability (benchmarked against well control) which has greatly increased our confidence in the veracity of interpretations made on these data.


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