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Title: A Method To Evaluate Automatic Hydrocarbon Dewpoint Analyzers
Author: Olivier Dusart, Pierre Desenfant, Jean-Marie Henault, Sandrine Meunier, Carine Ryszfeld, Marc Le Bail
Source: American Gas Association 2004
Year Published: 2004
Abstract: Liquids in natural gas have been an issue for many years, as they may induce damages in the transmission and distribution networks, or consumer facilities. Two different origins can be distinguished : compressor oil, and condensation of heavy hydrocarbons from natural gas itself. To prevent condensation of these heavy hydrocarbons, specifications on hydrocarbon dewpoint have been enforced in many countries in Europe. In the new context of a deregulated gas market in Europe, hydrocarbon dewpoint has become a key specification, but it is still very hard to determine as no standard method exists. This paper will describe a method to evaluate the performances of automatic hydrocarbon dewpoint analyzers, which are commonly used on field. Three instruments have been tested, and their results compared with calculations from composition and equation of state.

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