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- Title
The Arctic region from a trenching perspective.
- Authors
Machin, Jon
- Abstract
Available trenching solutions for subsea pipelines are mainly determined by the prevailing regional seabed soils and topographical conditions. In the Arctic region production pipelines and flowlines have recently begun to move offshore and particularly severe seabed conditions are being encountered. We are regularly seeing data which shows seabed clays so strong that they are probably more accurately described as rock. In this environment gravels, cobbles and boulder fields can also be frequent. Extremely rough seabed terrains are common-place. On the face of it such conditions probably suggest a need for the heaviest, strongest, trenching equipment. However Arctic seabed conditions can also be highly variable. For example a layer of very soft clay often overlies the hard material and paradoxically this would imply the use of the lightest equipment in order to ensure stability and avoid settlement problems. Careful engineering and choice of equipment will be the key to successful offshore trenching the Arctic region.
- Subjects
ARCTIC regions; UNDERWATER pipelines; OCEAN bottom; SUBMARINE trenches; ICE excavation; COLD weather conditions in engineering
- Publication
Journal of Pipeline Engineering, 2011, Vol 10, Issue 2, p121
- ISSN
1753-2116
- Publication type
Article