02258nmc a2200253 4500 20260520005601.0 260224s2001 xxu ing Inglés Dynamic Processes of Multiphase Flow in Subsea Flowline/Riser Systems During ESD Valve Shut Down SPE 69418 Dallas, Texas Society of Petroleum Engineers 2001 12/09/06 ; 17/07/01 Multiphase product transportation from offshore is facing the challenges of deepwater exploration and long-distance tieback. Prior predictions of the multiphase flow behavior, both steady state and transient, are crucial for successful design and operation of offshore facilities. The pressure surge and thermal stresses caused by transient multiphase flow during emergency shut down (ESD) are critical design criteria for pipeline systems. Numerical methods have been developed to simulate the subsea HIPPS/ESD shut down and the ensuing system transient behaviors. These methods are able to predict pressure and temperature response during and after ESD valve closure. The analytic predictions are used in the design of deepwater pipeline and riser systems. This paper demonstrates the use of transient multiphase flow analyses in the design of a deepwater subsea pipeline and riser systems. The pressure and temperature responses, and the pressure and temperature profiles from wellheads to the platform are investigated. The system design criteria are validated. The study improves the understanding of transient process in multiphase flow pipelines, and will benefit the deepwater production system design. CONGTP Doreen Chin, Y. 5836 Kenny, J.P. 5837 Xu, Zeng-Gang 5838 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 Kenny, J.P. 5837 Xu, Zeng-Gang 5838 Latin American and Caribbean Petroleum Engineering Conference (7th : 2001 mar. 25-28 : Buenos Aires, Argentina) 5738 Doreen Chin, Y. 5836 130862 130862 https://biblioteca.iapg.org.ar/ArchivosAdjuntos/LACPEC2001/Spe69418.pdf 0 0 0 0 201784 BVIAPG BVIAPG 2026-03-03 200002904 0 200002904 2026-03-03 01:41:00 2026-03-03 ARCHIVO