New job in Subsea7!

Written by Martin Teigen. Today was my first day in Subsea7, starting from home office! The position is Senior Engineer, and I am employed with the Pipeline Design discipline with the Stavanger office. This means that I recently also relocated from Oslo where I have been based over the past …

Interactive Map – J-Lay Vessels

Written by Martin Teigen. The map below shows the position of the j-lay vessels in the list below. The list presents j-lay vessels in operation as of March 2020 [Ref. 1]: Subsea7, Seven Borealis Subsea7, Seven Seas Heerema Marine Contractors, DCV Balder Heerema Marine Contractors, DCV Aegir McDermott, Derrick Barge 50 (DB50) …

Seven Navica in Kristiansand

Written by Martin Teigen. I have been tracking reel-lay vessels for a while now, and seeing that Seven Navica was quayside in Kristiansand, AND I was on Christmas holidays, I obviously had to take the trip from Oslo. It is only a 4 hour drive anyway, and it was also …

References on Residual Curvature Installation

Written by Martin Teigen. The following is an attempt on listing publications on residual curvature installation. I am almost certain I missed some, so please let me know and I will add them to the list! Trends:   1995 OMAE1995 BEHAVIOUR OF OFFSHORE PIPELINES SUBJECTED TO RESIDUAL CURVATURE DURING LAYING 2001 US6910830 …

Interactive Map – Offshore Fields with Residual Curvature Installation 2019

Written by Martin Teigen and Malik Ibrahim. The map presents the projects where residual curvature installation has been used or is considered. Blue: The project features a pipeline installed with residual curvature. Green: The pipeline owner has decided that residual curvature installation will be used. Red: Residual curvature installation is/was assessed. …

Seven Navica is back in the game!

Written by Martin Teigen. I recently wrote an article on the old reel-lay vessel Chickasaw that I believe is scrapped. Another vessel that I stopped tracking in 2017 is Seven Navica. She sat at the same location  for months on end, so I assumed she was laid up. Checking back …

Chickasaw scrapped?

Written by Martin Teigen. In another blog post, I am tracking the reel-lay vessels of the world. In addition to the vessels shown in that map, I have paid attention an old reel-lay vessel named Chickasaw. She was built in 1970 [Ref. 2] and operated for Technip for a number of years. …

Lunch Presentation

Written by Martin Teigen. I just received the news that I will hold a lunch presentation for Multiconsult. The topic is The Residual Curvature Method – A very attractive buckling control method for subsea pipelines. I am grateful for the opportunity and the photo below shows well how much I look forward …