L04: Predicting, Understanding and Avoiding the Ekofisk Rotor Instability 40 Years Later
Abstract
A re-examination of the well-known Ekofisk re-injection centrifugal compressor is presented Several opportunities makethis an ideal candidate to assess how well (or not) current design and analytical methods have evolved to avoid shaftwhip instability The Ekofisk compressor represented a major step forward in the discharge pressure and subsequently, thechallenges faced by the vendor and user concerning rotor lateral stability Open literature contains a historical record of theefforts to address the instability New information concerning the application and machine specific information is provided bythe compressor vendor To address the advances made in component and system design, the Ekofisk re-injection compressoris reconfigured as would be selected with today’s methods and components The rotordynamic behavior of this modernmachine is compared against the original
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Citation
Cloud, C. Hunter; Pettinato, Brian; Kocur, Jr., John (2021). L04: Predicting, Understanding and Avoiding the Ekofisk Rotor Instability 40 Years Later. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station. Available electronically from https : / /hdl .handle .net /1969 .1 /197456.