Measuring oil saturation with gaseous oil tracers

摘要

The oil saturation within a subterranean reservoir is determined by injecting water containing dissolved reactants which are substantially oil-insoluble and which convert the injected solution into a tracer- containing solution in which there is at least one each of oil and water tracers, with the oil tracers being gaseous, and chromatographically analyzing the patterns of the concentrations of the tracers within fluid produced from the reservoir for determining the oil saturation.