Statoil will soon be supplying their customers with oil and gas from the Tyrihans field on the Norwegian continental shelf. In 2006 Ramboll Oil & Gas commenced a detailed design project for the new pipelines and subsea structures on Tyrihans.
The field is being developed with four subsea production templates to be connected with the existing Åsgaard B field for gas injection and then piped to the Kristin platform for processing of produced oil. The high pressure/high temperature (HP/HT) pipelines will rest in a highly irregular seabed at water depths of 320 metres.
The difficult topographical conditions represented an interesting technical challenge for our team of engineers. By utilising our in-house design analysis package Goliat, we were able to calibrate the pipeline's free span and optimise construction accordingly.
From pre-engineering to detailed design
Ramboll Oil & Gas has also been involved in the pre-engineering phase of the project in 2004-2005, supplying design of flowlines, cables and umbilical. Tyrihans is slated to come on stream in 2009.