Sakhalin-1 GBS
The Arkutun-Dagi platform, part of the Sakhalin-1 development, features a gravity‑based structure engineered to withstand simultaneous Arctic ice loads, extreme cold and major earthquakes. The solution incorporates high‑durability concrete and a seismic isolation interface between the substructure and the topsides.
Extreme weather and earthquakes
- Location: Sea of Okhotsk, Russia
- Project period: 2007–2012
- Client / Operator: Exxon Neftegas
- Structure type: Concrete gravity-based structure (GBS)
Note: Aker Solutions has not undertaken work in Russia since 2022.
Engineering design and construction of a concrete gravity‑based structure founded on the seabed in Arctic offshore waters. The structure was designed to withstand extreme environmental conditions and earthquakes of up to magnitude 9.0, incorporating a seismic isolation layer between the GBS substructure and the topsides.
- Water depth: 33 m (mean sea level)
- Concrete volume: 52,000 m³
- Reinforcement: 20,000 tonnes (400 kg/m³)
- Post tension steel: 2,600 tonnes
- GBS dimensions: 135 × 100 m, height 55 m
- Designed for high seismicity and ice
- Concrete selected for robustness and durability
- Proven gravity-based solution for extreme environments