METHOD FOR DETERMINING RESIDUAL OIL SATURATION OF A GAS-SATURATED RESERVOIR

摘要

METHOD FOR DETERMINING RESIDUAL OILSATURATION OF A GAS-SATURATED RESERVOIRAbstractA method for determining in situ residual oilsaturation of a gas-saturated reservoir by injecting atleast two non-reactive tracers into an injector well andanalyzing the samples from a production well. The tracershave different partition coefficients and arechromatographically retarded to different extents duringtheir passage through the formation.