Abstract:

In order to increase the wellhead pressure in Puguang gas field that had high sulfur containing natural gas, a plan of using natural gas ejector to improve the pressure of low-pressure natural gas formation then transport was expressed. Due to the change of temperature and pressure in the process of ejection supercharging, high sulfur containing natural gas may produce sulfur release in ejector, the deposition of elemental sulfur can cause clogging and increase the corrosion of equipment. In this paper, a mathematical model for ejection supercharging of high sulfur containing natural gas was established to study the pressure, temperature and velocity distribution characteristics of natural gas in the ejector. The factors affecting the entrainment ratio were studied, and the possibility of sulfur release in the process of ejection supercharging was analyzed. The result shows that sulfur release occurs in the ejector under the design condition. The analysis results can provide guidance for ejection supercharging technology of high sulfur containing natural gas field.

Key words: ejector, sulfur release, high sulfur containing natural gas, FLUENT simulation