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Pipeline fracture control concepts for Norwegian offshore carbon capture and storage

Pipeline fracture control concepts for Norwegian offshore carbon capture and storage

Category
Academic chapter/article/Conference paper
Abstract
The Northern Lights onshore terminal will initially receive CO2 transported by ship tankers from industrial source sites located in south-eastern Norway and transport CO2 via a 12 ¾” OD offshore pipeline for injection into the Johansen storage reservoir, located south of the Troll field. The CO2 injection pipeline will be laid from the shore terminal to a subsea wellhead structure from where the liquid CO2 will be injected into the reservoir. Presently, demonstrating arrest of longitudinal propagating shear fracture in CO2 transport pipelines is specifically addressed in two international guidelines, ISO 27913 and DNVGL-RP-F104. The study reported here aims to develop a robust fracture control methodology unique to the Northern Lights pipeline. To this end, the maximum loading in terms of saturation pressure is conservatively estimated from temperature and pressure scenarios from the planned pipeline route and applied in numerical simulations of the running-fracture phenomenon using the SINTEF coupled FE-CFD code. It is shown that, with the given pipe material, diameter, and loading conditions, the proposed wall thickness of 15.9 mm is sufficient to arrest a propagating crack. Furthermore, the Battelle TCM with ISO 27913 or DNVGL-RP-F104 arrest- and load pressure correction is shown to provide a good first estimate in pipe design, although the arrest pressure saturates for low Charpy energy toughness values, indicating limited accuracy in this study
Client
  • Research Council of Norway (RCN) / 257579
Language
English
Affiliation
  • SINTEF Industry / Materials and Nanotechnology
  • University of Stavanger
  • Equinor
  • SINTEF Energy Research / Gassteknologi
Year
Publisher
The American Society of Mechanical Engineers (ASME)
Book
Proceedings of the 2020 13th international pipeline conference 2020 : Volume 3: Operations monitoring and maintenance : Materials and joining : Virtual Online. September 28–30, 2020
ISBN
9780791884461