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Title: Light Hydrocarbon Measurement
Author: Gregory C. Riddick
Source: 1990 Gulf Coast Measurement Short Course (Now called ASGMT)
Year Published: 1990
Abstract: Light hydrocarbon liquids, for purposes of this paper, consist predominately of the following components: ethane, propane, butanes, pentanes, hexanes and heavier paraffinic hydrocarbons. The liquid may be ccMiiposed of a large percentage of one of these types of molecules, as in the case of specification grade propane product, or they may be a mixture of all these molecules, as in the case of unfractionated natural gas liquid (NGL) mix. Additionally, other components, such as olefins and contaminants, are also in the liquids, but they are present in a lesser percentage. Measurement of light hydrocarbon liquids is more difficult than the measurement of crude oils and refined products for a number of reasons. First, they are of low viscosity and have very poor lubricating properties. Secondly, the jiiysical properties vary widely as their composition varies. Additionally, their physical properties are dramatically different under different temperature and pressure conditions.

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