TRACK RECORD
Deburial Works
REGION
Norway
SECTOR
Oil & Gas
SOLUTIONS
Controlled Flow Excavation
The Project
JBS were contacted by Subsea 7 Norway to carry out excavation works from the Geosund 52 offshore supply vessel in the North Sea.
The excavation work scope was to debury designated areas of the 20” concrete coated EKO Pipeline to allow access for concrete removal.
The Challenge
The operation was particularly sensitive as Sea Axe could not over excavate the area in case any freespan was created.
The Solution
Sea Axe was the ideal tool for the project due to its versatility and controllability.
The vessel first cut a perpendicular trench across the designated pipeline area to find that it was buried 1.1m deep.
Deburial of the pipeline also required an additional 1m clearance below the pipeline for the concrete removal manipulator access.
It was recommended to the client that a 3m trench was excavated over a 25m length to achieve the required specification.
The operation was monitored topside using real-time image sonar.
The required area was prepared for Subsea 7 to carry out and complete their development work scope for BP quickly and professionally, without incident.
Marine & Subsea
JBS delivers specialised engineering for deployment in marine and subsea environments — from precision controlled flow excavation (CFE) work on the seabed to delivering bespoke fabrication work for installation below the surface.
With headquarters in the North Sea port of Peterhead, our team are perfectly placed to support Marine & Subsea clients in the North Sea and other global regions,.
