<p>In the oil and gas industry, waterflooding or water injection is an enhanced oil recovery technique.&nbsp; By flooding the reservoir with water through injection wells, the pressure is maintained, and the oil is displaced towards the production wells to stimulate production.&nbsp; An active subsea field in the Gulf of Mexico has adopted a thermoplastic composite pipe (TCP) water injection jumper for its waterflood upgrade.&nbsp; The jumper assembly is composed of a TCP span attached to steel piping on either end.&nbsp; The TCP spool is lightweight and flexible relative to the traditional steel-only M-shaped subsea jumpers.&nbsp; As such, the flow-induced vibration (FIV) threat from internal fluid flow must be assessed for the intended service.&nbsp; A three-tiered approach is used to assess the level of FIV threat expected in this TCP subsea jumper application.&nbsp; A high-level screening based on widely used industry guidelines indicates a high susceptibility to FIV fatigue failure for the steel piping in the TCP jumper assembly, with no applicability to the TCP material.&nbsp; A comprehensive screening based on structural finite element analysis and computational fluid dynamics shows that the vibration levels and stress cycling due to FIV will be acceptable for the intended water injection application and a 30-year design life, when adopting a factor of safety of 10 for subsea service.&nbsp; We evaluate a sensitivity to extending the length of the steel piping on either end of the TCP span as a means to increase the overall span of the TCP jumper assembly.&nbsp;</p>

Flow-Induced Vibration Screening of a Thermoplastic Composite Pipe Water Injection Jumper

Paper Proceedings: https://asmedigitalcollection.asme.org/OMAE/OMAE2021/volume/85116

OMAE 2021

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