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Title: Wet Gas Measurement
Author: Joshua J. Kinney
Source: 2006 International School of Hydrocarbon Measurement
Year Published: 2006
Abstract: In the natural gas industry, proper flow measurement is one of the key elements in providing accurate allocation of revenue. Natural gas may have some liquid content. This liquid may be water, hydrocarbons, compressor oil or a mixture of all three. When a flow meter is subjected to wet gas, large errors in flow measurement may occur with undesirable results to the bottom line. The intention of this paper is to introduce the reader to the difficulties associated with wet gas measurement and identify some techniques being used accomplish this. The content presented is not intended for wet gas measurement error correction. The first section gives a brief glossary of terms used when describing wet gas flow followed by a list of general equations associated with these terms. The next section gives descriptions wet gas flow regimes present in a horizontal pipe. Previous research conducted in a controlled environment is presented focusing on the effect of entrained liquids on various flow measurement devices. In addition, methods of wet gas flow measurement are discussed. Finally, general ideas about wet gas metering are discussed.

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