Tension and Expansion Analysis of Pipe-in-Pipe Risers: Part B, Finite Element Modeling
EVENT: ISOPE
1 Jul 2013
EVENT: ISOPE
1 Jul 2013
We developed a mathematical model for accurately calculating the pipe-in-pipe riser tension and elongation in Part A of the paper. In this Part B, we focus on finite element modeling of the multi-string riser system.
The simulations are performed using two widely used riser analysis finite element software, OrcaFlex and Flexcom. A tensioner supported pipe-in-pipe TTR system is studied. Special measures and considerations in modeling the pipe-in-pipe features are discussed. The finite element analysis solutions are benchmarked against theoretical results considering weight, temperature, pressure, and tensioner loads. Good agreements, including riser stroke and tension distributions between the inner and outer risers along the length of the riser, are observed. The riser dynamic analysis with environmental loads is subsequently performed with finite element software.
Principal Engineer
Kevin is a principal engineer with 19 over years’ post-graduate experiences in offshore industry including FEED through detailed design. Experienced in the global finite element analysis of risers (top tension risers, steel catenary risers, steel lazy wave risers, flexible risers) and local FEA. Broad based responsibilities in offshore engineering with experiences in analysis and engineering design of riser systems, hydrodynamics, motion analysis, mooring analysis, strength, fatigue analysis, ECA and structural design.
Global Director, USA
After two years at 2H’s London office, David relocated to the US in 1998 to establish the Houston office to meet the demands of Gulf of Mexico deepwater developments. His focus since then has been the development and growth of 2H, globally as a principal director and locally in Houston, where he remains jointly responsible for the management of the office along with Mike Campbell. He has detailed knowledge of steel catenary risers having been involved in projects like Chevron Tahiti, Jack St. Malo and LLOG Delta House. David is a Chartered Marine Engineer, holds a master’s degree in civil engineering from Surrey University, UK, and has over 24 years’ riser engineering experience.