A method and system for the offshore production of fuel includes an offshore marine platform on which is mounted a hydrogen production unit. The hydrogen production unit may produce hydrogen utilizing raw materials sourced adjacent the marine platform, including seawater and electricity from offshore wind turbines. The produced hydrogen may then be blended onboard the marine platform with liquefied natural gas delivered to the marine platform in order to produce a blended fuel comprised of the delivered natural gas and a portion of the produced hydrogen. The blended fuel may be subsequently liquified and transported away from the marine platform, or conveyed to a remote location via a seabed pipeline, or combusted by onboard combustion turbines that can in turn drive electric generators onboard the marine platform to produce electricity.

This invention provides a means of loading, processing and conditioning raw production gas, production of CGL, storage, transport, and delivery of pipeline quality natural gas or fractionated products to market. The CGL transport vessel utilizes a pipe based containment system to hold more densely packed constituents of natural gas held within a light hydrocarbon solvent than it is possible to attain for natural gas alone under such conditions. The containment system is supported by process systems for loading and transporting the natural gas as a liquid and unloading the CGL from the containment system and then offloading it in the gaseous state. The system can also be utilized for the selective storage and transport of NGLs to provide a total service package for the movement of natural gas and associated gas production. The mode of storage is suited for both marine and land transportation and configured in modular form to suit a particular application and/or scale of operation.

A continuous vertical tubular handling and hoisting buoyant structure has a hull, a main deck, an upper neck extending downwardly from the main deck, an upper frustoconical side section, an intermediate neck, a lower neck that extends from the intermediate neck, an ellipsoidal keel and a fin-shaped appendage secured to a lower and an outer portion of the exterior of the ellipsoid keel. The upper frustoconical side section is located below the upper neck and maintained to be above a water line for a transport depth and partially below the water line for an operational depth of the buoyant structure. An automated stand building system mounted to the hull is in communication with a controller and configured to make up the marine risers, make up casing, and make up drill pipe.

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.

A floating structure is described. The floating structure includes a floating platform disposed at a water surface, a mooring system and a dumping system. The mooring system is configured for mooring one side of the floating platform to a sea floor, thereby to permit rotation of the floating structure and to provide a desired orientation down-wind with respect to an anchor point. The dumping system is arranged at one side of the floating platform and is configured for absorbing wave energy and stresses imparted by the motion of waves in order to stabilize a horizontal position of the floating structure down-wind during a storm against the waves.

The present invention relates to systems for securing connectors of risers in petroleum production units. In this scenario, the present invention provides an autonomous system for securing a riser support, said system comprising (i) a riser support (32) connected at its bottom end to a submerged riser (34) and at its upper end to a tensioning element (30), (ii) a supporting ledge (20) comprising a through-hole (22) through which the tensioning element (30) and at least part of the riser support (32) pass, (iii) a securing device (40) located on the supporting ledge (20), said securing device (40) sliding relative to the supporting ledge (20) and driven by an actuator (48), wherein the securing device (40) slides between an unlocked position and a locked position on the through-hole (22), wherein, in the locked position, the securing device (40) can engage with locking in a connector (38) of the riser support (32) after the connector (38) has passed through the through-hole (22) of the supporting ledge (20). The present invention further provides an autonomous method for securing a riser support associated with the system described above.

A buoyant structure has a hull having a main deck, a lower inwardly-tapering frustoconical side section that extends from the main deck, a lower generally round section extending from the lower inwardly-tapering frustroconical side section, a keel having an n-polytope shape, a plurality of separate tunnels between columns extending from the keel having an n-polytope shape and a fin-shaped appendage is secured to a lower and an outer portion of the hull. The at least one tunnel contains water at operational depth of the buoyant structure.

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.

Techniques and devices to assist an offshore unit in going on location and coming off location. A device may include an interface configured to receive a signal indicative of motions of an offshore unit. The device may also include a memory configured to store a set of values corresponding to acceptable motions of the offshore unit, as well as a processor configured to determine if a measured motion of the offshore unit exceeds at least one value of the set of values and generate an indication that going on location by the offshore unit can be undertaken when the processor determines that the measured motion of the offshore unit is less than or equal to the at least one value.

A potable water producing system for disposition at a salt water body and methods of producing potable water are provided. The system includes a wave energy conversion system (AWECS) and a portable filtration system. The AWECS forms a floating articulated barge having an onboard desalination system including reverse osmosis membranes. The filtration system is a sand filter residing on a damping plate submerged in the salt water body and filters the adjacent salt water for providing filtered salt water to the onboard desalination system. Wave action on the articulated barge provides energy to pump and pressurize the filtered salt water from the sand filter to the reverse osmosis membranes to produce potable water. The wave action on the articulated barge effects shaking of the reverse osmosis membranes, thereby rendering them self-cleaning. The potable water can be used for various applications, e.g., bottling, replenishing aquifers, ground and/or aquifer remediation, irrigation, etc.