SUBSEA HYDROCARBON RECOVERY SYSTEMS AND METHODS

摘要

The present invention discloses systems, apparatuses, and associated methods for producing, separating, storing, and offloading hydrocarbons from a hydrocarbon producing well in a subsea environment, which may be a remote, arctic subsea environment. In particular, the systems include a large gravity-separation tank or tanks constructed at least partially from structural concrete to separate oil, water, gas, and/or particulates. The gravity- separation tank or tanks may be connected to one or more buoyancy cells in a large gravity- based structure (GBS), which may be built in a graving dock, towed to a remote location (e.g. arctic), ballasted to the seafloor and integrated into a subsea hydrocarbon production system. The system may further include an offloading system and a local power supply.