This paper discusses the effect of chemical and physical properties of produced fluids on the design of offshore gas-condensate production system. The status of Western Australian gas projects is reviewed along with the expected composition of natural gas from offshore wells. NWS, Pluto, and Gorgon projects in Carnarvon Basin are reviewed and then Browse and Ichthys projects in Browse Basin are reviewed as well. It is noted that the carbon dioxide concentration in natural gas from Gorgon wells

more »

... s 14.0 mol%, which is higher than that of any other gas wells in Carnarvon basin. When selecting the field development concept, it needs to consider the product, reservoir production strategy, surface production facilities, and production rate. This paper details each topics considering the status of Western Australian gas fields. During the design of offshore production facilities flow assurance issues has to be considered. Among various issues of flow assurance, hydrate, wax, and corrosion are discussed in this paper along with the detailed design modification in one of Western Australian offshore gas fields.