Residual Saturation of Water-Wet Sandstones: Experiments, Correlations and Pore-Scale Modeling

摘要: Displacement experiments using the porous plate method were conducted on water-wet sandstones to measure capillary trapping of oil by waterflooding as a function its saturation after primary drainage. Three sandstone samples ranging in porosity from 12.2% 22.1% considered. Experiments two at an elevated temperature and back-pressure 343K 9MPa respectively; third sample ambient conditions (292 297K 0.06 0.17MPa). Residual increases monotonically, but with decreasing gradient, initial increases.