Tension and Expansion Analysis of Pipe-in-Pipe Risers: Part B, Finite Element Modeling
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.
Authors
Kevin Man
Principal Engineer
About
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.
Expertise
Insights
David Walters
Global Director, Perth
David Walters
Global Director, Perth
About
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. Since then, he has played a key role in the development and global growth of 2H as a Principal Director, while also serving as Vice President of the Houston office.
David has detailed knowledge of steel catenary risers, having been involved in major projects such as Chevron Tahiti, Jack St. Malo and LLOG Delta House. A Chartered Marine Engineer, he holds a master’s degree in Civil Engineering from the University of Surrey, UK, and has over 24 years of riser engineering experience.
David has recently relocated to Perth, Australia. In addition to his global leadership role, he will focus on growing 2H’s presence in the Asia-Pacific region and strengthening regional operations.