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Title: Characterization Of Heavy Components Class 21
Author: John Renfrow
Source: 1999 International School of Hydrocarbon Measurement
Year Published: 1999
Abstract: Extended analysis by chromatography is required when Gas Processor Association (G.P.A.) Methods 2261 and 2177 fail to produce data of individual hydrocarbon compounds. G.P.A. Method 2261 (Analysis for Natural Gas and Similar Gaseous Mixtures by Gas Chromatography) individually identifies 3 inerts and hydrocarbon compounds methane through normal pentane. G.P.A. Method 2177 (Analysis of Demathanized Hydrocarbon Liquid Mixtures Containing Nitrogen and Carbon Dioxide by Gas Chromatography) identities the same compounds with some variation in methodology. G.P.A. Methods 2186 and 2286 are to be used when hydrocarbon compounds heavier than normal pentane are to be identified. As a definition for this class, the term, heavy components, will include all hydrocarbon compounds requiring extended analysis for identification. Characterization of heavy hydrocarbons will be discussed in the following topics:

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