Abstract
Dahab, A.S., Omar, A.E., El-Gassier, M.M. and El Kariem, H.A., 1992. Formation damage effects due to salinity; temperature and pressure in sandstone reservoirs as indicated by relative permeability measurements. J. Pet. Sci. Eng., 6: 403-412. The aim of this study was to investigate, experimentally, the relative permeability reduction due to the difference in salinity between connate and injected brines in cores having different lithology. The effect of temperature and pressure on relative permeability was also investigated.
Formation damage, due to the incompatibility between formation and injected-water salinities, decreased oil and brine relative permeabilities, increased residual saturations and decreased oil recovery. Shock effects of sudden water injection resulted in an increase in formation damage. Temperature decreased the degree of permeability reduction, whereas pressure had a slight effect on formation damage.