Abstract: A method for reducing the pressure of fluid within subsea equipment. The method includes the steps of: (a) providing a pipe, (b) laying the pipe on the sea floor, (c) providing a connector, (d) connecting the pipe to the subsea equipment via the connector, and (e) extracting fluid from the subsea equipment through the connector and into the pipe. Apparatus for reducing the pressure of fluid within subsea equipment by extracting fluid from the subsea equipment.

Abstract: A cover including an elongate body, capable of being applied to be facing an outer surface of the pipe, and at least one longitudinal interaction element for interacting with the pipe, supported by the elongate body. The elongate body is reversibly deformable under the effect of its own weight, the elongate body having a length of more than 10 m. The cover treats solid build-ups within a fluid-transport pipe in a simple, straightforward and inexpensive manner.

Abstract: A method for reducing the pressure of fluid within subsea equipment. The method includes the steps of: (a) providing a pipe, (b) laying the pipe on the sea floor, (c) providing a connector, (d) connecting the pipe to the subsea equipment via the connector, and (e) extracting fluid from the subsea equipment through the connector and into the pipe. Apparatus for reducing the pressure of fluid within subsea equipment by extracting fluid from the subsea equipment.

Abstract: The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

Abstract: A cover including an elongate body, capable of being applied to be facing an outer surface of the pipe, and at least one longitudinal interaction element for interacting with the pipe, supported by the elongate body. The elongate body is reversibly deformable under the effect of its own weight, the elongate body having a length of more than 10 m. The cover treats solid build-ups within a fluid-transport pipe in a simple, straightforward and inexpensive manner.

Abstract: The pipe includes at least one tubular sheath delimiting a passage for circulation of the abrasive material, at least one tensile armor layer externally positioned with respect to the tubular sheath, the armor layer including a plurality of filiform armor elements. It further includes a protective internal layer positioned inside the tubular sheath in the circulation passage, the protective internal layer including an elastomeric matrix and a longitudinal reinforcement assembly embedded in the matrix.

Abstract: The device of the disclosure comprises an assembly (22) for collecting material on the bed (12) of a body of water (14), a riser (48) for lifting the solid material, and a pump (90) for lifting the solid material collected by the collection assembly (22) in the riser (48) towards the surface facility (26). The device also comprises a separator (42) for generating a stream having a high content of solid material and a stream having a low content of solid material, the separator (42) including a lower outlet (76) for discharging the stream with high content of solid material. The device comprises an upstream hose (40) connecting the collection assembly (22) to the separator (42), and an intermediate pipe (44) connecting the or each discharge outlet (76) of the stream with high content of solid material to the riser (48), the delivery outlet (100) of the pump being tapped into the intermediate pipe (44).

Abstract: The device of the disclosure comprises an assembly (22) for collecting material on the bed (12) of a body of water (14), a riser (48) for lifting the solid material, and a pump (90) for lifting the solid material collected by the collection assembly (22) in the riser (48) towards the surface facility (26). The device also comprises a separator (42) for generating a stream having a high content of solid material and a stream having a low content of solid material, the separator (42) including a lower outlet (76) for discharging the stream with high content of solid material. The device comprises an upstream hose (40) connecting the collection assembly (22) to the separator (42), and an intermediate pipe (44) connecting the or each discharge outlet (76) of the stream with high content of solid material to the riser (48), the delivery outlet (100) of the pump being tapped into the intermediate pipe (44).

Abstract: Dehydrogenation of a reactor system of one or more vertically oriented flow reactors equipped with a system for introducing a catalyst extender into the inlet of the reactor. A vertically oriented radial flow reactor comprises inner and outer reactor tubes having perforated wall members extending longitudily of the reactor and defining an annulus containing a dehydrogenation catalyst. A supply line to the reactor is equipped with a rotation vane. An injection nozzle comprising a coaxial flow tube extends into the supply line downstream of the vane. The coaxial flow tube has an interior chamber and an annular chamber surrounding the interior chamber and extending into the supply line along with the interior chamber. The interior chamber is connected to a catalyst extender source and the annular chamber is connected to a source of a carrier gas which is effective to disperse the extender within feedstock flowing into the reactor.

Abstract: Dehydrogenation of a reactor system of one or more vertically oriented flow reactors equipped with a system for introducing a catalyst extender into the inlet of the reactor. A vertically oriented radial flow reactor comprises inner and outer reactor tubes having perforated wall members extending longitudily of the reactor and defining an annulus containing a dehydrogenation catalyst. A supply line to the reactor is equipped with a rotation vane. An injection nozzle comprising a coaxial flow tube extends into the supply line downstream of the vane. The coaxial flow tube has an interior chamber and an annular chamber surrounding the interior chamber and extending into the supply line along with the interior chamber. The interior chamber is connected to a catalyst extender source and the annular chamber is connected to a source of a carrier gas which is effective to disperse the extender within feedstock flowing into the reactor.

Abstract: Dehydrogenation of a reactor system of one or more vertically oriented flow reactors equipped with a system for introducing a catalyst extender into the inlet of the reactor. A vertically oriented radial flow reactor comprises inner and outer reactor tubes having perforated wall members extending longitudily of the reactor and defining an annulus containing a dehydrogenation catalyst. A supply line to the reactor is equipped with a rotation vane. An injection nozzle comprising a coaxial flow tube extends into the supply line downstream of the vane. The coaxial flow tube has an interior chamber and an annular chamber surrounding the interior chamber and extending into the supply line along with the interior chamber. The interior chamber is connected to a catalyst extender source and the annular chamber is connected to a source of a carrier gas which is effective to disperse the extender within feedstock flowing into the reactor.