Abstract:
A riser system (10) comprises a primary conduit (20, 120) extending between a surface vessel (12) and a subsea location and an auxiliary conduit (22, 122) extending adjacent the primary conduit. In one example a composite jumper (40, 140) conduit extends from the surface vessel and is fluidly connected to the auxiliary conduit, said jumper conduit comprising a composite material formed of at least a matrix and one or more reinforcing elements embedded within the matrix. In one example a subsea composite jumper conduit (52) extends from subsea infrastructure and is fluidly connected to the auxiliary conduit, said subsea jumper conduit comprising a composite material formed of at least a matrix and one or more reinforcing elements embedded within the matrix.
Abstract:
A fairing (1) for improving fluid flow around a circular-cylindrical object comprises a first fairing-element (11) and a second fairing-element (12), which are releasable relative to one another. The fairing-elements are easy to manufacture, compactly stackable, and easy to install around the object. In installed condition, the first fairing-element and the second fairing-element are mutually connected in circumferential direction of the fairing, while forming a twin-fin fairing, which reduces vortex-induced vibrations around the object, while providing favourable flow resistance, and without performing galloping motions.
Abstract:
A riser top connector assembly (20) is shown. The assembly (20) includes a first connector part (21) arranged on a flexible jumper prepared for connection with a second connector part (40) arranged on top of a marine riser tower assembly projecting from the seabed. The first connector part (21) is provided with suspension means adapted to engage with supporting means in order to be supported and be able to tilt in the marine riser tower assembly. The first connector part (21) includes a housing (22) that receives an extendable termination hub (23) having a clamp connector (24) attached thereto. The jumper termination hub (23) is alignable with a riser hub (44) on the second connector part (40) when the first connector part (21) is being tilted relative to the marine riser tower assembly.
Abstract:
A marine riser (2) comprises one or more riser sections (5a-n) connected in an end-to-end relationship and configured for extending between a subsea installation (3) and a suspension means (1, 4) above the subsea installation. At least one, preferably the lowermost, riser section (5a), comprises at least one pipe (7, 8, 9) having a heat exchanger device (10; 17). The heat exchanger device (10) comprises in one embodiment a support casing (13, 13a,b) having a plurality of radially extending fins (11), and in another embodiment a plurality of branch pipes (17a-c), fluidly connected to at least one of the pipes (7, 8, 9).
Abstract:
The invention relates to a cover (5) for preventing fire and explosion propagating through an opening around tube (1), such as a drilling riser, intervention riser, or similar tubular element. The cover (5) extends as a continuous flexible sheet from an attachment near the edge of the opening to the tube (1) and is attached to the tube (1) at a position away from the opening.
Abstract:
A circulation mechanism in a subsea assembly is selectively actuated to allow fluid communication between the riser annulus and tubing string to immediately kill the well using heavy-weight fluid in the riser annulus; perform well control operations by adjusting the weight or other properties of fluid in the tubing string or riser annulus; and/or to circulate the riser of a deep-water well undergoing well testing or intervention.
Abstract:
A device for positioning an umbilical conduit for deep underwater drilling, comprising at least one submersible propeller (9) designed to be able to exert, on said umbilical conduit, a force (F) substantially transverse to said umbilical conduit and means for fixing said propeller to said umbilical conduit.
Abstract:
Le raidisseur (16) comporte : - un corps (20) délimitant une lumière centrale (32) de passage de l'élément allongé (14), d'axe central (Α-Α'), - un ensemble (22; 24) de renfort du corps (20), au moins partiellement reçu dans le corps (20), l'ensemble de renfort (22; 24) comportant au moins une région circonférentielle s'étendant autour de l'axe central (Α-Α'), - au moins un capteur de mesure (60) d'une déformation au sein du raidisseur (16); Le ou chaque capteur de mesure de déformation (60) est porté par l'ensemble de renfort (22; 24) du corps (20).
Abstract:
A connector assembly for connecting a hose to a tubular element, the connector assembly comprising a tubular housing which encloses a main passage extending generally parallel to a longitudinal axis of the housing and which is provided with a side passage extending through the housing from the exterior of the housing into the main passage, the side passage further extending through a connector tube which is mounted on the exterior of the housing, the connector further being provided with a hose connector adapted to be secured to an end of the hose and to engage with the connector tube for connecting the hose to the tubular element, the hose connector comprising a pipe portion which is adapted to mate with the connector tube so that the interior of the hose is connected to the side passage, wherein the assembly is further provided with a latch which is operable to urge the connector tube and pipe portion into engagement and to prevent separation of the connector tube and pipe portion when the two are mated to connect the interior of the hose with the side passage.
Abstract:
A subsea riser system with a gas-lift facility comprises a production riser having a riser conduit and at least one lift gas injection port communicating with the riser conduit. An umbilical is arranged to supply lift gas to the lift gas injection port. A heating unit is positioned to act on a downstream end region of the umbilical adjacent to the lift gas injection port. Thus, a method of providing lift gas to a subsea riser system comprises conveying lift gas toward a production riser and, before injecting the lift gas into the production riser, heating the lift gas locally adjacent to the production riser.