A subsea hydrocarbon export system includes a riser tower having a riser column extending from a seabed location to a sub-surface buoy that supports the riser column in an upright orientation. A subsea connector is operable underwater to couple the riser column temporarily to a hose suspended from a surface shuttle tanker vessel for an export operation and to release the hose after the export operation.

Disclosed is a single-upright-column mooring type wellhead production operation platform, comprising an upright column body, a positioning and mounting assembly, a rotating table, an oil extraction operation platform and at least one inner well slot, wherein the upright column is of a hollow structure; the positioning and mounting assembly is arranged at a bottom of the upright column body; the rotating table is arranged outside the upright column body, is rotatable around an axis of the upright column body and comprises a mooring connection apparatus; the oil extraction operation platform is arranged on the top of the upright column body and is located above the rotating table, and the oil extraction operation platform is provided with an oil extraction operation assembly; and the inner well slot is arranged in the upright column body and can be connected to the oil extraction operation platform. The platform can adapt to an economic index of extraction of a marginal field. Disclosed are a single-upright-column wellhead production operation platform and a rotary mooring conveying system for oil-producing operation at the same time.

Systems and processes for recovering a condensate from a conduit. In one embodiment, the system can include a floating buoy that can include a fluid swivel assembly coupled thereto. The system can also include a floating conduit, a first gas transfer conduit, and a second gas transfer conduit that can be configured to transfer a gas discharged from a vessel storage tank to a pipeline end manifold located at a subsea location. The system can also include a first condensation conduit, a pump, and a second condensation conduit that can be configured to transfer at least a portion of any condensate that accumulates within an internal volume of the floating conduit at a low point between the vessel storage tank and the first gas transfer conduit into a flow path defined by a first swivel section of the fluid swivel assembly, a storage tank, or a combination thereof.

One general aspect includes a buoy position analyzer system. The buoy position analyzer system also includes a transceiver interface. The buoy position analyzer system also includes a memory storage. The buoy position analyzer system also includes circuitry may include one or more processors configured to: receive node unit data via the transceiver interface, generate an operational movement envelope for a buoy based on the received node data, store the operational movement envelope in the memory storage, and monitor additional node unit data via the transceiver interface.

A system for transferring crude oil from an onshore location to an offshore vessel comprises a buoy, a floating vapor hose supported by the buoy and configured to be connected to the vessel for discharging vapor; a subsea pipe-line end manifold (PLEM); a subsea vapor hose extending between the PLEM and the buoy, and connected via the buoy internal piping to the floating vapor hose; a subsea vapor line extending between a vapor processing facility and the PLEM and connected to the subsea vapor hose; wherein the system further comprises a drain for the removal of condensed vapor from at least one of the floating vapor hose, subsea vapor hose and subsea vapor pipeline.

A system for transferring crude oil from an onshore location to an offshore vessel comprises a crude oil supply assembly for transferring the crude oil from an onshore oil supply to the vessel, and a vapor return assembly for transferring vapor from the vessel to a vapor processing facility. The vapor return assembly is provided with a fan configured to promote a flow of vapor through the vapor return assembly from the vessel towards the vapor processing facility. The system further is provided with a member for energizing the fan.

A process system (15) for transfer of a fluid between a floating or non-floating facility (11) and a receiving structure (21) via a support unit (12) is disclosed, where the process system (15) comprises: —a first pipe element (58) for transport of fluid on the support unit (12), —a second pipe element (68) for transport of fluid on the support unit (12), —a first cross over pipe (22) that is fluidly connected to the first pipe element (58) and the second pipe element (68), —a second cross over pipe (26) that is fluidly connected to the first pipe element (58) and the second pipe element (68), —a first valve device (30) arranged in the first cross over pipe (22), —a second valve device (31) arranged in the second cross over pipe (26) —a first cargo valve device (39) that is provided in the first pipe element (58), —a second cargo valve device (40) that is provided in the second pipe element (68). A fluid transfer system (10) comprising such a process system (15) is also disclosed.

An apparatus, method and system for real-time monitoring of underwater risers, cables, and mooring lines based on a Kalman filter. In an embodiment, the system is formed with sensors configured to sense an inclination of a riser segment between riser nodes of the riser between the upper end and the lower end. A data processing system is configured to employ a Kalman filter algorithm to produce real-time estimates of a deformed shape and a stress of the riser segment using the sensed inclination between the riser nodes.

A yoke mooring system for connecting a floating vessel to a tower structure at sea. The system can include a support structure with one or more extension arms suspended from the support structure. A ballast tank can be connected to the one or more extension arms, and a yoke can extend from and connect to the ballast tank. The yoke can include a tower connector disposed on a second end thereof for connecting to the tower structure. A first winch system can be located on the support structure and connect to the yoke proximate a second end of the yoke via a first line or cable. A second winch system can be connected to the ballast tank via a second line or cable.

The invention relates to a system (2), having: a buoyant buoy (4), and a floating hose (6) which has a plurality of buoyant hose segments (8) which are coupled in series. The buoy (4) has a liquid outlet connection (12) which is connected to the floating hose (6), so that the floating hose (6) is arranged in a geometrical arrangement with respect to the buoy (4). A plurality of node units (18) are fastened in a distributed manner to the floating hose (6) and the buoy (4). Each node unit (18) is designed to establish, by means of an associated radio unit, a respective radio link (22, 24, 26, 28) to each of at least two of the further radio units of the respective node units (18, 42, 44, 46, 48), so that a radio network (30) is created. Each node unit (18) is designed to determine a relative distance (32, 34, 36, 38) from each further node unit (18) on the basis of the respective radio link. One node unit (18, 42, 44, 46, 48), which is designed as the main unit (40), is designed to collect the determined relative distances (32, 34, 36, 38) and to determine, on the basis of said relative distances, location data which represent the geometrical arrangement of the floating hose (6) relative to the buoy (4). The main unit (40) has a radio transmitter unit (50) which is designed to wirelessly transmit a location signal which represents the location data.