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Title: Identification Of Injected Storage Gas
Author: Raymond P. Anderson, James W. Vogh
Source: American Gas Association 1988
Year Published: 1988
Abstract: A literature search and survey of operators of underground gas storage facilities indicated that methods that can be used for identification of injected storage gas include tracers, compositional analysis, and isotope ratios. The ideal situation is that in which a naturally occurring component can be used to distinguish between two sources of gas. Where naturally occurring tracers are missing, added tracers have been used. Compositional analyses (both hydrocarbons and nonhydrocarbons) may be used sometimes to distinguish between gases from different sources. Fractionation during migration is a complicating factor in this approach. Isotope ratios have been very successful in distinguishing between storage gas and swamp gas this method has also been extended successfully to distinguish between storage gas and native gas. The surveys indicated that knowledge of migration characteristics of tracer gases and their stability under underground storage conditions was deficient. Stability and migration characteristics of ten potential tracers were examined. TVvo programs (multiple regression analysis and factor analysis) were developed for the treatment of compositional analyses for the identification of migrating storage gas.

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