Abstract
This paper discusses the high pressure natural gas reinjection facilities at the Mobil Oil Arun natural gas field in North Sumatra. Each of the three compression trains at Arun comprises a 4 stage centrifugal compressor with a 28000 BHP gas turbine driver plus associated cooling, scrubbing, and control facilities. The present throughout of each train is around 220 MMSCFD at 6500 PSIG discharge pressure. The paper first discusses the overall Arun Field facilities and operation. It then describes in detail the compression train facilities including the causes of, and solutions to, the many and various problems associated with the commissioning and operation of prototype compression facilities. The paper also describes performance monitoring of the trains and the efforts made to optimize train capacity. The paper concludes with 12 specific practical recommendations based on the problems and experiences encountered at Arun during the last six years of operation.
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