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From seismic reflections to diffractions - case study of interpretation for development of a complex gas reservoir

: Foss, S.-K.; Karlsen, E.S.; Mispel, J.; Straith, K.R.; Merten, Dirk; Ettrich, Norman


European Association of Geoscientists and Engineers -EAGE-:
Energy, technology, sustainability - time to open a new chapter. 79th EAGE Conference and Exhibition 2017. Vol.3 : Paris, France, 12-15 June 2017
Red Hook, NY: Curran, 2017
ISBN: 978-1-5108-4353-0
European Association of Geoscientists and Engineers (EAGE Conference and Exhibition) <79, 2017, Paris>
Conference Paper
Fraunhofer ITWM ()

In this case study, we investigate how the use of different information derived from a seismic dataset improves the understanding of a complex gas reservoir in a development context. We are adapting a versatile imaging algorithm (the generalized radon transform) to create seismic images with enhanced S/N ratios and enhanced diffractions. These are better suited to the interpretation challenges of the reservoir. On one hand, the S/N enhanced images and gathers were used as clean and detailed input to an elastic seismic inversion. These complemented the structural interpretation and led to a better understanding of reservoir properties and connectivity in the main part of the reservoir. On the other hand, the diffraction images were incorporated in a more standard interpretation workflow as high-resolution input to seismic geomorphology in order to predict the quality at the fringe of the reservoir. This was not possible with conventional input and methods.