Abstract
ABSTRACT This paper presents a study on the use of radioactive tracers for steam vapor phase injection profiling. Field data show that methyl and ethyl iodide are not reliable vapor phase tracers because they decompose into water soluble tracers at steam conditions. Vapor phase injection profiles obtained with methyl and ethyl iodide are therefore incorrect. Radioactive inert gases (krypton, xenon, or argon) are recommended as vapor phase tracers. Field data using inert gases to trace the vapor phase identify gravity segregation problems in the wellbore. Techniques to measure downhole steam quality are discussed and field data presented.
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