Image Analysis Characterization of Small-Scale Heterogeneities in Fluvial Reservoirs: A Case Study from The Gypsy Sandstone of Central Oklahoma.


Kevin T. Englet, Michael L. Sweet,
BP Exploration

SPWLA 34th Annual Logging Symposium, June 13-16, 1993



To test the ability of the Formation MicroScanner (FMS mark of Schlumberger) tool to discriminate small-scale heterogeneity in fluvial reservoirs, six wells were logged with the FMS in a well characterized reservoir – the Gypsy sandstone of Central Oklahoma. The reservoir was examined in outcrop, shallow borings and "normal" reservoir environments. The reservoir was purposely chosen to contain only water, so that the effects of lithofacies on log response could be isolated.