This paper presents the development of a floating production and storage platform and demonstrates the overall functionality of such a concept in the challenging and harsh environment of the Arctic and Sub-Arctic. The design is a Concrete Deep Floater platform with an integrated buoy for quick disconnects and reconnects of risers and mooring systems. The Concrete Deep Floater concept is especially suitable as a remote hub given its large oil storage and topside payload capacity. The following main features are included in the design: Robust ice resistant concrete hull with acceptable hydrodynamic motions in severe weather conditions Risers protected from ice exposure Mooring system with mooring lines connected in lower part of structure with no ice exposure Quick disconnect system allowing for controlled disconnect within 12 hours and emergency/survival disconnect within 3 hours. Quick reconnect solutions providing controlled disconnect. Large topside capacity: 30.000-50.000 tonnes Large oil storage capacity, 1.4 million bbl. Direct offloading system integrated in the topside design Substantially maintenance free hull Possibility for local substructure construction Possibility for local topside integration with inshore completion The Arctic is believed to contain considerable reserves of oil and gas. Hence, developing solutions that can operate safely in the Arctic is crucial. Existing Gravity Base Structure concepts have been developed for shallow waters. However, the prospect of operating in deeper waters requires a floating platform capable of withstanding the harsh Sub-Artic and Artic conditions.
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