An unmanned production platform comprises apparatus for producing and processing hydrocarbons from a subsea reservoir. A storage vessel is provided in combination with and proximate to the platform, typically just outside the safety zone. The storage vessel provides storage for hydrocarbons produced at the platform and further provides a utility for use at the platform, such as chemical storage, liquid desiccant regeneration and/or seawater treatment. Typically, the unmanned production platform comprises no utilities and all utilities require for production are provided by the storage vessel.

Offshore systems and methods may be configured for offshore power generation and carbon dioxide injection for enhanced gas recovery for gas reservoirs. For example, a method may include: providing an offshore facility including a gas turbine, and a gas separator; producing a produced gas from a gas reservoir to the offshore facility; combusting the produced gas in a gas turbine to produce power and a flue gas; at least partially removing nitrogen from the flue gas in a gas separator to produce a carbon dioxide-enriched flue gas and a nitrogen-enriched flue gas; compressing the carbon dioxide-enriched flue gas in a gas compressor to produce a compressed gas; and injecting the compressed gas from the gas compressor into the gas reservoir, wherein 80 mol % or more of hydrocarbon in the produced gas is combusted and/or injected into the gas reservoir.

A mobile waterborne energy platform systems and methods comprising a purpose built marine vessel, a pre fabricated building structure, a plurality of fuel cells or generators, a plurality of fuel tanks, a plurality of mechanical equipment, a plurality of electrical equipment and a method to transmit electrical power to shore or to another marine vessel. The mobile waterborne energy platform systems and methods described may be employed to quickly provide utility grade electrical power to remote austere locations. The electrical power may be produced by a plurality of fuel cells or generators configured on a mobile waterborne vessel that may be transported to remote areas to provide an on site electrical power source for critical infrastructure, communications, emergency or medical facilities. The systems and methods are ideal for military purposes where troops may be deployed in remote locations without readily available utility grade electrical power.

A floating vessel equipped with a power plant includes a hull and a process deck arranged on a portion of the hull above compartments within the hull. The power plant includes a fuel source and at least one electrical power generator driven by a gas turbine; the fuel source arranged for providing fuel to the gas turbine. Per gas turbine, the floating vessel is equipped with a steam production unit coupled to the gas turbine exhaust for receiving heat to produce pressurized steam. Per each steam production unit, the floating vessel is equipped with at least one secondary power generator driven by a steam turbine, which is coupled to the steam production unit for receiving steam. Each gas turbine and steam production unit are positioned on the process deck, and each secondary power generator and steam turbine are positioned under the process deck in the one or more compartments.

A floating vessel equipped with a power plant includes a hull and a process deck arranged on a portion of the hull above compartments within the hull. The power plant includes a fuel source and at least one electrical power generator driven by a gas turbine; the fuel source arranged for providing fuel to the gas turbine. Per gas turbine, the floating vessel is equipped with a steam production unit coupled to the gas turbine exhaust for receiving heat to produce pressurized steam. Per each steam production unit, the floating vessel is equipped with at least one secondary power generator driven by a steam turbine, which is coupled to the steam production unit for receiving steam. Each gas turbine and steam production unit are positioned on the process deck, and each secondary power generator and steam turbine are positioned under the process deck in the one or more compartments.

A system includes a fuel burner disposed within a buoy, and at least one fuel tank coupled to the fuel burner. The fuel tank preferably contains ethanol or propane. The system comprises either a thermoelectric generator or an electrical generator mechanically coupled to a heat engine. The ethanol or propane is burned to generate electric power. At least a portion of the electric power that is generated is stored in a battery system so that the system can provide peak levels of electric power consumption that are relatively large. The system can be used in autonomous marine applications.

A system includes a fuel burner disposed within a buoy, and at least one fuel tank coupled to the fuel burner. The fuel tank preferably contains ethanol or propane. The system comprises either a thermoelectric generator or an electrical generator mechanically coupled to a heat engine. The ethanol or propane is burned to generate electric power. At least a portion of the electric power that is generated is stored in a battery system so that the system can provide peak levels of electric power consumption that are relatively large. The system can be used in autonomous marine applications.

Offshore systems and methods may be configured for offshore power generation and carbon dioxide injection for enhanced gas recovery for gas reservoirs. For example, a method may include: providing an offshore facility including a gas turbine, and a gas separator; producing a produced gas from a gas reservoir to the offshore facility; combusting the produced gas in a gas turbine to produce power and a flue gas; at least partially removing nitrogen from the flue gas in a gas separator to produce a carbon dioxide-enriched flue gas and a nitrogen-enriched flue gas; compressing the carbon dioxide-enriched flue gas in a gas compressor to produce a compressed gas; and injecting the compressed gas from the gas compressor into the gas reservoir, wherein 80 mol % or more of hydrocarbon in the produced gas is combusted and/or injected into the gas reservoir.

A system for marine electricity generation and solid carbon production includes an offshore marine platform on which is mounted a regassification system for regassification of liquid methane; a methane splitting system producing solid carbon and gaseous hydrogen; and a power generation system producing electricity and exhaust heat. A first marine vessel is moored adjacent the marine platform for delivery of the liquid methane, and a second marine vessel is moored adjacent the marine platform for removal of the solid carbon produced by the methane splitting system. The hydrogen produced from the methane splitting system is used in a fuel stream for the power generation system. The exhaust heat from the power generation system is utilized in the methane splitting process. Also mounted on the marine platform is a solid carbon handling system disposed to manage the large amount of solid carbon resulting from the methane splitting process.

The present invention relates broadly to a offshore facility. The offshore facility comprise a floating platform; a metal processing apparatus disposed on the floating platform; and a power management module adapted to manage and provide a stable power supply to the metal processing apparatus.