Capillary desaturation curves and remaining oil saturations for some North Sea elastic reservoirs have been studied. Bentheimer sandstones were used as model candidate in the study. Capillary desaturation curves and remaining oil saturations are interpreted by experimental results from variations of fluid systems, pore geometry, and surface properties of the porous medium. Differences in temperature, pressure and fluid systems did not alter the capillary desaturation curves. Change of wettability from strongly water-wet to mixed-wet condition resulted in significant decrease of remaining oil for low capillary numbers. Critical capillary number for sandstones from one of the reservoirs was 10- to 100-fold lower compared to similar sandstones from other North Sea reservoirs. Different wettability and consolidation of the cores were responsible for this large difference in critical capillary number. The buoyancy effect seemed to change the remaining oil saturation after waterflooding on cores from one of the reservoirs.