A male-male hot stab assembly connectable to a flying receptacle is described. The male-male hot stab assembly comprises a first hot stab comprising a first hot stab male front end and a first hot stab base end, a second hot stab comprising a second hot stab male front end and a second hot stab base end, where the first hot stab and second hot stab are connected to each other by connecting the first hot stab base end to the second hot stab base end. In addition, a flying receptacle configured to receive a first hot stab of the hot stab assembly is described, which comprises a receptacle first end, configured to receive a first hot stab, a channel allowing the first hot stab to be inserted into the flying receptacle, a receptacle second end, and an ROY-handle. Further described is a subsea fluid connection system.

A tool for mechanically unlocking a subsea hydraulic connector which is configured to releasably connect a first subsea component to a second subsea component. The connector includes a housing which is secured to the first subsea component, a locking piston which is positioned within the housing, and a number of locking jaws which are configured to be engaged by the locking piston. The locking piston is movable between a locked position in which the locking piston forces the locking jaws into engagement with the second subsea component to thereby secure the connector to the second subsea component, and an unlocked position in which the locking piston releases the locking jaws from engagement with the second subsea component to thereby disconnect the connector from the second subsea component. The tool includes a number of transportable actuators which are positionable into an operable position adjacent the connector, and activation of the actuators causes the locking piston to move from its locked position to its unlocked position to thereby disconnect the connector from the second subsea component.

A subsea blind stab (100), comprises a stabbing part (110) for insertion into a hot stab receptacle, the stabbing part (110) including a housing, a central rod (150) slidably arranged within the housing and at least one fluid communication line from the external side of the stabbing part (110) to an internal fluid communication line (180) within the rod (150). The at least one fluid communication line is open in a first position of the rod (150) relative the housing and closed in a second position of the rod (150) relative the housing. The stab (100) further comprises a hollow body (120) attached to one end of the stabbing part (110); a piston (130) slidably arranged in the hollow body (120), with a spring element (160) arranged between the piston (130) and a spring attachment element (170) connected to the body. A first side of the piston (130) forms a fluid chamber (140) in the hollow body. The fluid chamber (140) is in fluid communication with the internal fluid communication line in the rod, and a second side of the piston (130) is exposed to a pressure of the surrounding environment.

A riser extending from a floating rig has a riser manifold. A rig manifold can be manipulated by an arm to couple in an automated manner to the riser manifold when running the riser from the rig. The riser and rig manifolds have mechanical connectors that mechanically connect them. Additionally, the manifolds have flow couplings mating together for conducting flow in at least one flow connection, and the manifolds control couplings mating together for conducting control in at least one flow connection. At least one of the manifolds has at least one valve controllable with the at least one control connection and configured to control fluid communication for the at least one flow connection between at least one rig flow line and an internal passage of the riser.

A tensioning system includes a combined rope gripper and tension cylinder. A rope passes through the combined rope gripper and tension cylinder. Once the length and/or tension of the rope has been adjusted, a reel lock handle can be actuated to prevent further rotation of the reel. The combined rope gripper and tension cylinder can be actuated to hold the rope. The combined rope gripper and tension cylinder can also be actuated to reduce or prevent the release of tension in the rope.

A subsea blind stab (100), comprises a stabbing part (110) for insertion into a hot stab receptacle, the stabbing part (110) including a housing, a central rod (150) slidably arranged within the housing and at least one fluid communication line from the external side of the stabbing part (110) to an internal fluid communication line (180) within the rod (150). The at least one fluid communication line is open in a first position of the rod (150) relative the housing and closed in a second position of the rod (150) relative the housing. The stab (100) further comprises a hollow body (120) attached to one end of the stabbing part (110); a piston (130) slidably arranged in the hollow body (120), with a spring element (160) arranged between the piston (130) and a spring attachment element (170) connected to the body. A first side of the piston (130) forms a fluid chamber (140) in the hollow body. The fluid chamber (140) is in fluid communication with the internal fluid communication line in the rod, and a second side of the piston (130) is exposed to a pressure of the surrounding environment.

A tool for mechanically unlocking a subsea hydraulic connector which is configured to releasably connect a first subsea component to a second subsea component. The connector includes a housing which is secured to the first subsea component, a locking piston which is positioned within the housing, and a number of locking jaws which are configured to be engaged by the locking piston. The locking piston is movable between a locked position in which the locking piston forces the locking jaws into engagement with the second subsea component to thereby secure the connector to the second subsea component, and an unlocked position in which the locking piston releases the locking jaws from engagement with the second subsea component to thereby disconnect the connector from the second subsea component. The tool includes a number of transportable actuators which are positionable into an operable position adjacent the connector, and activation of the actuators causes the locking piston to move from its locked position to its unlocked position to thereby disconnect the connector from the second subsea component.

In a subsea blowout preventer stack system with a lower marine riser package with a lower marine riser connector and choke and/or kill lines, and a lower blowout preventer stack with a mandrel on the upper end and choke and/or kill lines connection to choke and kill valves, a method of porting the choke, kill lines, hydraulic lines and electrical lines vertically through the wall of the lower blowout preventer stack mandrel.

A tensioning system includes a combined rope gripper and tension cylinder. A rope passes through the combined rope gripper and tension cylinder. Once the length and/or tension of the rope has been adjusted, a reel lock handle can be actuated to prevent further rotation of the reel. The combined rope gripper and tension cylinder can be actuated to hold the rope. The combined rope gripper and tension cylinder can also be actuated to reduce or prevent the release of tension in the rope.

It is described a single line quick connector (10), a system comprising the connector (10) and associated method, for connecting a hydraulic, chemical or water fluid line (20) to a fluid connection interface (2) on a component (1), wherein the connector (10) comprises: an outer housing (11) comprising a tool (12) in one axial end thereof for operation by a tool (3), a flow bore (14) for fluid connection with the fluid connection interface (2) on the component (1), a screw element (13) which is rotationally movable and axially fixed relative the outer housing (11), wherein the screw element (13) extends in a longitudinal direction of the connector (10) and comprises external threads (15) along a part of its axial length and further comprises a termination (16) which is operable by the tool (3), a collet sleeve (17) which is rotationally fixed and axially movable relative the outer housing (11), wherein the collet sleeve (17) further comprises internal threads (18) for cooperation with the external threads (15) on the screw element (13), and wherein the collet sleeve (17) comprises a plurality of collet fingers (19) in an axial end thereof for connection to the fluid connection interface (2) on the component (1), and, a fluid line insert (23) comprising a groove (24) for a coupler (25), wherein the outer housing (11), the screw element (13) and the collet sleeve (17) are arranged such that: a rotation of the screw element (13) in a first direction results in an axial movement of the outer housing (11) relative the collet sleeve (17), and thus the collet fingers (19), in a first axial direction, and a rotation of the screw element (13) in a second direction, opposite of the first rotational direction, results in an axial movement of the outer housing (11) relative the collet sleeve (17), and thus the collet fingers (19), in a second direction, which is opposite to the first axial direction, wherein the outer housing (11) comprises a through-going opening (21) ( ) and the collet sleeve (17) comprises at least one recess (22) between neighboring collet fingers (19), wherein the through-going opening (21) and the at least one recess (22), when connected, are configured to accommodate the fluid line insert (23), and wherein the fluid line insert (23) is connectable to the fluid line (20). The is fur