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From seismic reflections to Diffractions — Case Study of Interpretation for Development of a Complex Gas Reservoir
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 79th EAGE Conference and Exhibition 2017, Jun 2017, Volume 2017, p.1 - 5
Abstract
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.