Abstract
The γ-ray multiphase flow meter (MFM) developed by CSIRO determines the flow rates of oil, water and gas in pipelines from oil wells. It is based on two specialized γ-ray transmission gauges mounted on a pipe carrying the full flow of oil, water and gas. One gauge uses γ-ray transmission and the other dual energy γ-ray transmission (DUET). This paper describes a trial of the MFM, undertaken by CSIRO and Esso Australia Ltd, on the West Kingfish offshore oil platform, Bass Strait, Australia. The trial is the most comprehensive platform trial ofa MFM ever undertaken, involving measurements on 20 wells over a period of 18 weeks. The relative errors in flow determination were 3.9% for liquids, 7.6% for gas, 7.9% for oil, and 5.2% for water. Water cut was determined to 3.3%. These relative errors include errors due to the MFM and due to the separator and its output meters. The West Kingfish trial and two earlier field trials, demonstrate that, after calibration, the MFM measures flow rates and water cut accurately and performs reliably. CSIRO now expect to appoint a commercial licensee to further industrialize the equipment, manufacture and market the MFM.
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