Subsea illustration

Norway-based certification body DNV is set to launch two joint industry projects (JIPs) for the subsea and pipeline sectors, expected to deliver combined savings of £6.75m.

The JIPs will investigate affordable composite components for the subsea sector, and qualify technology for better linepipe production processes.

According to the company, the affordable composites for the oil and gas industry JIP replaces large-scale tests with ‘certification by simulation’ and reduces the cost of qualifying composite components for subsea use.

It is expected to deliver a 40% to 50% cost saving for certification and qualification of subsea composite components.

Partly funded by the Research Council of Norway, the project has participants that include Statoil, Petrobras, Petronas, Nexans, Airborne and the Norwegian University of Science and Technology (NTNU) in Trondheim.

DNV GL – Oil & Gas principal engineer Jan Weitzenböck said: "Composite components require full-scale testing to document long-term properties to achieve certification.

"We estimate that it could deliver a 20%-30% reduction in pipeline material cost, corresponding to £4m-£5.5m saving potential for a 30km flowline."

"A typical qualification campaign for a subsea composite component can cost in the region of ten to Nkr100m."

The driver for the New Material Solutions for Flowlines JIP is the usage of high-frequency welded/submerged arc welded (HFW/SAW) pipes to aid cost savings.

The JIP has attracted pipe manufacturers, installation contractors and operators such as Corinth PipeWorks, EMAS, JFE-Steel, Sumitomo, Tata steel, Tenaris/Tamsa and Woodside.

DNV GL – Oil & Gas pipeline technology vice-president Leif Collberg said: "Though there is a considerable amount of research and full-scale reeling trials for the use of HFW or SAW linepipe, as well as a good track-record in terms of executed projects, a joint systematic approach to optimise the design of these linepipe for reeling is lacking.

"There is much to be gained through this project, we estimate that it could deliver a 20%-30% reduction in pipeline material cost, corresponding to £4m-£5.5m savings potential for a 30km flowline."


Image: DNV’s JIPs could deliver a combined saving of £6.75m. Photo: © DNV GL AS.