Flexible tubular pipe
AssigneesCoflexip, Institut Francais du Petrole
InventorsPhilippe Espinasse, Patrice Joël Louis Jung, Daniel Averbuch, François Dupoiron
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Abstract
A flexible tubular pipe comprising a metal carcass helically coiled about a longitudinal axis of said flexible pipe and the carcass comprises a seamed profiled hollow tube.
Claims15
A flexible tubular pipe, comprising at least one hollow profiled metal tube spiraled in a helix about a longitudinal axis of the flexible pipe, the metal tube being peripherally continuously closed without any gaps or welds, wherein the metal tube is interlocked but is otherwise free of any attachment, said profiled metal tube forming at least one spiraled box section.
A flexible tubular pipe comprising a metal box section spiraled in a helix abut a longitudinal axis of the flexible pipe, the box section comprised of at least one interlocked hollow profiled tube, said hollow profiled tube having an approximately trapezoidal cross-section.
A flexible tubular pipe comprising two separate box sections spiraled in a helix about a longitudinal axis of the flexible pipe, each said box section being comprised of at least one interlocked hollow profiled tube and being symmetrical with respect to a mid-axis of the profiled tube, said hollow profiled tube having an approximately trapezoidal cross-section.
A flexible tubular pipe comprising a metal box section spiraled in a helix about a longitudinal axis of the flexible pipe, the box section comprised of at least one interlocked hollow profiled tube, wherein the hollow tube includes an upper radially outer wall and a lower radially inner wall, and windings of the hollow profiled tubes are interlocked via their upper and lower walls.
Dependencies are inferred from the claim text.