An Assessment of Lateral Variability of Geological Parameters Using Modal And Geostatistical Analysis of Outcrop Analog

摘要

Spatial variations in pertrophysical properties have been described for interwell scale outcrop analogs to subsurface reservoir facies in the marginal marine upper Almond formation near Rock Springs, Wyoming. The objective ofthis study was to determine interwell scale lateral trends in heterogeneity that can be translated to nearby analogous reservoirs. More than 1,600 one-inch diameter plugs were collected for petrophysicla analysis from outcropong tidal delta, tidal channel and foreshore facies. These facies compro=ise respervoir quality sandstones in the Greater Treen River Basin east of the Rock Springs Uplift. Modal analysis of 78 thin sections provided compositional and packing parameters.