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Title: Sampling And Conditioning Of Natural Gas Containing Entrained Liquid
Author: Donald P. Mayeaux
Source: 2004 Appalachian Gas Measurement Short Course
Year Published: 2004
Abstract: The analysis of natural gas plays an important role in determining its monetary value. Natural gas is bought and sold based on its energy content and volume. The energy content or heating value is computed directly from the analysis. Physical constants of the gas, which are necessary to accurately determine its volume, are also computed from the analysis. Therefore the correct assessment of the monetary value of natural gas is dependant to a large extent on overall analytical accuracy. The largest source of analytical error in natural gas is distortion of the composition during sampling. Sampling clean, dry natural gas, which is well above its Hydrocarbon Dew Point (HCDP) temperature is a relatively simple task. However, sampling natural gas that is at or near its HCDP temperature is challenging. For these reasons, much attention has been focused on proper methods for sampling natural gas which have a high HCDP temperature. This presentation will address several problems associated with sampling natural gas which is at or near its HCDP temperature. Industry standards or guidelines for sampling natural gas will also be discussed.

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