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Title: Sampling Wet Natural Gas For Btu And Moisture Analysis
Author: Shannon Bromley
Source: 2011 Natural Gas Sampling Technology Conference
Year Published: 2011
Abstract: Current industry standards, by virtue of their scope, do not address the sampling of wet natural gas. There is no consensus on a clear definition of the term wet natural gas. For the purpose of this paper, wet natural gas is defined as a natural gas stream containing liquid of any type. Wet gas is sometimes referred to as multi-phase flow. It is a well known fact in the industry that the largest source of sample distortion in natural gas sampling stems from the sample system. Sampling clean, dry natural gas, which is well above its dew point temperature, is a relatively simple task. Sampling natural gas that is near or below its dew point temperature is not so simple. For this reason the industry is now focusing on proper methods for sampling wet natural gas. This document will present an overview of the problems involved with sampling wet natural gas for on-line BTU and moisture analysis, give guidance on designing sample systems tailored for wet gas sampling, and provide updates on where the industry is on research and standards involving wet natural gas sampling.

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