The Arun Gas Field in Indonesia, has been in operation since May, 1977. This paper discusses gas compression and other facilities required to produce one of the largest gas-condensate fields in the world. The unusually high flowing temperatures and pressures associated with the large gas volumes required for the project called for special considerations in the application of centrifugal compression for the gas cycling phase of the project. The gas stream from the separation station provides the volume required to maintain design capacity at the PT Arun LNG Facilities located nearby. The remainder of the gas stream is diverted for re-injection into the Arun Reservoir. The compression facilities consist of three separate power trains operating in parallel. Each train is made up of four stages of centrifugal compression driven by a gas fired turbine site rated at 28,000 BHP. Current injection rate is approximately 300 MMSCF/Day at a surface pressure of approximately 7100 psia. With several years of operating experience now history, this paper also describes several design modifications required early in the project and discusses the causes and solutions to several operating problems. Operating and performance data is provided to illustrate characteristics of the equipment utilized.

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