Metering and custody transfer

J. Apgar, Contributing Writer, Chino Hills, California  Upstream, gas producers and processors deliver natural gas to fill growing demand for the clean-burning fuel. Downstream, hundreds of miles of pipeline infrastructure deliver the gas to market. In between, at the points of custody transfer, are multitudes of analyzers ensuring that contaminants, such as hydrogen sulfide (H2S), are low enough to protect the pipelines and the public (Fig. 1). This critical measurement prevents corrosion, which, in the worst case, can lead to pipeline rupture. Fig. 1. At points of custody transfer, analyzers ensure that contaminants are low enough to protect the pipelines. What ha