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Elastic Inversion of 3D Seimic Data – A Market Benchmark
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 72nd EAGE Conference and Exhibition incorporating SPE EUROPEC 2010, Jun 2010, cp-161-00009
- ISBN: 978-90-73781-86-3
Abstract
Because of an increasing use of seismic inversion products within Maersk Oil, it was needed to perform a benchmarking exercise to identify seismic inversion/reservoir characterization contractor(s) of choice. To ensure robustness of the benchmark a highquality dataset was used (high SNR, good well coverage and well established rock physics model) from a clastic Palaecene reservoir showing a strong class II AVO response. The exercise included four contractors and Maersk’s internal inversion group, each asked to provide relative and absolute acoustic impedance, Poisson’s ratio volumes along with Bayesian seismo-facies prediction. The comparison was carried out by measuring correlations between inverted and measured relative acoustic impedance and relative Poisson’s ratio, combined with visual inspection of different sections, maps and along well locations in terms of predictability and continuity of events. We have found that the reliability in estimating acoustic impedance was similar for all the participants, and it was in fact the ability to estimate Poisson’s ratio that was the main differentiator. Other important aspects were significant differences in software runtimes, efficiency of workflows and processing/pre-conditioning capabilities. This benchmark has given us a sound overview of the abilities of the participating contractors.