Abstract
A-15 SEISMIC REPEATABILITY NORMALISED RMS AND PREDICTABILITY ED KRAGH and PHIL CHRISTIE 1 Summary: Time-lapse seismic requires quantifiably repeatable data. In this paper we present a repeated 2D seismic line and show that the repeatability is correlated with streamer position differences. We examine repeatability in terms of the normalized RMS difference and the predictability (normalized cross power or coherence). An inverse relationship exists between the two metrics and while neither metric is an intuitive measure of repeatability their combination offers a possible methodology for matching datasets. Introduction: Time-lapse data are increasingly used to study production-induced changes in the seismic response
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