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Title: Full Scale Testing Of Gas Wells
Author: Charles R. Roberson
Source: 1994 International School of Hydrocarbon Measurement
Year Published: 1994
Abstract: A natural gas well as produced from a reservoir is often a complex mixture of hundreds of hydrocarbon compounds, non hydrocarbons such as Nitrogen, Carbon Dioxide, Water and sometimes Sulfur compounds such as Hydrogen Sulfide and Mercaptans. These compounds all have different boiling points, densities, vapor pressures and other physical properties which cause some compounds to be in the gaseous phase while others are in the liquid phase. The liquid hydrocarbons are usually referred to as condensate or distillate. A typical well stream is a high velocity, turbulent, constantly expanding mixture of gases and liquids, mixed with water vapor, free water and other contaminants. The stream is undergoing constant pressure and temperature reduction. Gases evolve from the liquids, water vapor condenses, and some of the well stream changes in character from liquid to bubbles, mist, and free gas. The high-velocity gas is carrying liquid droplets, and the liquid is carrying gas bubbles. Stated simply, FULL SCALE TESTING is a production test procedure to separate and measure the relative amounts of gas, oil and water in the well stream. This paper shall discuss the use of trailer mounted test separators for production test procedures.

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