Global Infrastructure SherpaAquaTerra Group completes internal repair of offshore production platform caisson using C-Cure lining system
AquaTerra Group completed the first full-length internal repair of a seawater and drilling cuttings disposal caisson on an offshore production platform in the North Sea, utilizing its C-Cure lining system. The project involved lining 30 meters of a 30-inch caisson to address internal wall thinning and install a continuous maintenance barrier, reducing repair costs to less than 20% of replacement and avoiding several months of downtime. AquaTerra was responsible for liner specification, design, supply, offshore construction, rigging, installation, and inspection activities for the platform's engineering and project management contractor.
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- Repair costs reduced to less than 20% of full replacement.
- Avoided several months of platform downtime.
- First full-length internal repair of an offshore caisson.
- Lined 30 meters of a 30-inch caisson.
Source Intelligence
The project involved lining 30 meters of a 30-inch caisson to address internal wall thinning while installing a continuous maintenance barrier along the entire length of the structure. The offshore campaign was completed in about one week, including mobilization, installation, inspection and removal of equipment. The C-Cure lining was installed and cured within a single 12-hour shift. AquaTerra said the method reduced repair costs to less than 20% of the cost of replacement and avoided several months of expected downtime. The caisson will be brought back into service during the asset’s 2026 shutdown, enabling the infrastructure to be used again after several years out of operation.
"AquaTerra Group has completed what it said is the first full-length internal repair of a seawater and drilling cuttings disposal caisson on an offshore production platform in the North Sea, using its C-Cure lining system."
"The repair work was delivered for the platform’s engineering and project management contractor, with AquaTerra responsible for liner specification, design and supply, as well as offshore construction, rigging, installation and inspection activities."
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