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Utilizing a novel quantitative interpretation workflow to derisk shallow hydrocarbon prospects — a Barents Sea case studyNormal access

Authors: Laurent Olivier Feuilleaubois, Valerie Charoing, Andrea Maioli and Cyrille Reiser
Journal name: First Break
Issue: Vol 35, No 3, March 2017 pp. 85 - 92
Language: English
Info: Article, PDF ( 2.28Mb )
Price: € 30

Summary:
Large areas of the Barents Sea, such as the formerly disputed zone between Norway and Russia in the eastern Barents, are still undrilled. An exploration licence was recently awarded over the Haapet Dome (PL859) to operators with a prime interest in shallow Jurassic reservoirs (Reiser et al., 2016). Multiple oil and gas discoveries made farther west, such as Goliat and Norvarg, make this part of the world a highly prospective area for hydrocarbons. Traditionally the combination of a hard seabed with relatively shallow water depths has prevented the recording of near offset reflection data for the shallowest sediments. It is therefore not surprising that the presence of shallow hydrocarbons in this area has only recently been revealed thanks to imaging techniques that use the energy from sea-surface reflections which provide the missing near angle information for reliable AVA analysis. This paper describes a regional rock physics study of the Barents Sea and a quantitative interpretation workflow using Separated Wavefield Imaging (SWIM) and Full Waveform Inversion (FWI) to identify leads over the Haapet Dome in absence of direct well information.


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