Yoke mooring systems and processes for using same. The system can include a turntable connected to and rotatable with respect to a base. A yoke can be connected to the turntable such that the yoke can at least partially rotate about a longitudinal axis of the yoke and at least partially rotate about a second axis that can be orthogonal to the longitudinal axis. A first and second link arm can be connected to the yoke and to a first component of a first and a second releasable connector, respectively. A first and second lifting line can be connected to the second end of the first and second link arms, respectively. A first and second lifting device can be disposed on a vessel and configured to be connected to a second end of the first and second lifting lines, respectively, to lift and lower the link arms and the yoke.

Mooring systems and processes for using same. In some embodiments, the system can include a first vessel support structure and a second vessel support structure, each disposed on a vessel. Each vessel support structure can include at least one extension arm can be suspended from each vessel support structure. A ballast tank can be connected to each of the at least one extension arms. A first end of a yoke can be connected to the ballast tank and a second end of the yoke can include a yoke head disposed thereon. The system can also include a first mooring support structure and a second mooring support structure, each fixed in place. Each mooring support structure can include a pitch bearing. The yoke heads of the first and second vessel support structures can be connected to the pitch bearings of the first and second mooring support structures, respectively.

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.

A system for release of mooring loading and unloading lines between a loading and unloading station at sea and a vessel comprises a yoke with mooring tethers, for connection between the yoke and the vessel. A method for quick release comprises disconnecting the lines, connecting them to a winch arrangement; lowering line connectors for parking on a parking structure on the yoke if the swivel is above sea level, or on the sea floor if the swivel is close to the sea floor; lowering the yoke by the winch arrangement after the line connectors are parked on the parking structure if the swivel is above sea level, lowering the yoke with the line connectors if the swivel is close to the sea floor; stopping the winch arrangement when the yoke has landed on the sea floor, and further lowering the mooring tethers on the sea floor by moving the vessel.

A yoke mooring system and method for disconnecting a moored vessel from a tower structure. 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.

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.

A system for release of mooring loading and unloading lines between a loading and unloading station at sea and a vessel comprises a yoke with mooring tethers, for connection between the yoke and the vessel. A method for quick release comprises disconnecting the lines, connecting them to a winch arrangement; lowering line connectors for parking on a parking structure on the yoke if the swivel is above sea level, or on the sea floor if the swivel is close to the sea floor; lowering the yoke by the winch arrangement after the line connectors are parked on the parking structure if the swivel is above sea level, lowering the yoke with the line connectors if the swivel is close to the sea floor; stopping the winch arrangement when the yoke has landed on the sea floor, and further lowering the mooring tethers on the sea floor by moving the vessel.

Mooring support structures, systems for mooring vessels, and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure than can include a post connected at a first end to a turntable disposed on a base structure. The post can extend out from the turntable and a yoke head connector can be connected to a second end of the post. A distal end of the yoke head connector can provide a disconnection location such that when a yoke head is disconnected from the yoke head connector, the yoke head can fall by gravity from the yoke head connector without contacting the mooring support structure.

Surge damping systems and processes for using same. In some embodiments, a system for mooring a vessel can include a mooring support structure that can include a base structure and a turntable disposed on the base structure. A vessel support structure can be disposed on the vessel. At least one extension arm can be suspended from the vessel support structure. A ballast tank can be connected to the extension arm. A uni-directional passive surge damping system can be disposed on the vessel and can include an elongated tension member connected to the ballast tank that can be configured to dampen a movement of the ballast tank by applying a tension thereto. A yoke can extend from and can be connected at a first end to the ballast tank and can include a yoke head disposed on a second end thereof that can be configured to connect to the turntable.

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.