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.

Abstract: The invention concerns a double-sheath rigid pipe for transporting hydrocarbons consisting of two respectively inner (2) and outer (3) coaxial tubes separated by an annular gap (5), said pipe being adapted to be wound and comprising a device limiting the propagation of a deformation occurring on the outer tube, wherein a radial stop device (10) linked to the inner tube (2) but not linked to the outer tube (3) allows a localized collapse of value G of the outer tube, G being selected to stop the propagation of a deformation of the outer tube (3).

Abstract: The present invention relates to a flexible pipe structure wherein transverse displacement caused by buckling of the elongate elements of a tensile armouring layer when the pipe is being laid or used in deep sea is limited. The invention aims to reduce the play between the elongate elements of the tensile armouring layer so as to limit transverse displacement possibilities while providing the pipe with the required flexibility and mechanical characteristics. The elongate elements can freely move longitudinally in relation to one another to ensure flexibility of the pipe.

Abstract: A fixing end-fitting for a flexible tubular pipe, the pipe comprising an inner sealing sheath, a pressure vault comprising a short-pitch helical winding of a metal forming wire, an intermediate sheath and at least a web of tensile long-pitch wound armour wires and an outer sealing sheath. The end-fitting comprises a stepped part capable of sliding into a stepped cylindrical housing of the end-fitting. Two crimping elements sealingly fix the inner sheath and the intermediate sheath. Screws enable the stepped part to be brought closer to and be fixed on the end-fitting. The stepped part and the deformable elements constitute three separate elements, thereby facilitating mounting and providing a better control of tightness.

Abstract: The flexible pipe comprises a plastic sealing sheath and an inner plastic sheath which define an annular space in which structural elements are placed. The structural elements comprising at least one armor ply consisting of metal wires wound helically with a long pitch are in the space. An end fitting is fitted at each end of the flexible pipe. At least one external anode electronically connected to at least one armor ply. The anode is placed in an intermediate region of the flexible pipe distal from the end fittings. A connection means connects the anode to at least one of the metal wires of the said armor ply in the intermediate region.

Abstract: A flexible tubular pipe comprising at least one metal profile spiralled in a helix about a longitudinal axis of the flexible pipe. The profile consists of a metal strip, each turn of which comprises two separate box sections which are obtained by bending the said strip so that the free edges of the strip are turned down between the two box sections and are in contact with a strip portion provided on an upraised bulge formed between the two box sections. The contact portion ties approximately along the neutral fiber of the profile. Each box section has a trapezoidal shape. Connectors above or below the profile connect windings. The edges of the connectors extend into the bulges. Profiling or extra elements are provided for the connectors.

Abstract: For transferring a fluid between at least two floating supports or one floating and one fixed support, a rigid hollow transport line is immersed with a cable suspension system in the sea. A flexible connector links each end of the rigid transport line to one of the supports. The entire rigid transport line including its ends is immersed in the sea at a depth which is greater than the turbulent zone of the sea. Each connector provides continuity of oil flow between the two floating supports via the rigid transport line.

Abstract: A device for arresting the propagation of a buckle appearing on an outer tube of a double-walled rigid pipe intended to transport hydrocarbons and consisting of two coaxial tubes. The double-walled pipe is of the reelable type and intended for very great depths and consists of a thick and rigid annular transverse partition fastened to the inner tube and to the outer tube. The partition is joined to the outer tube and to the inner tube by way of an outer and inner sleeve having the same diameter as the outer and inner tubes and fastened to the latter.

Abstract: A flexible tubular pipe having, from the inside outwards, at least, a carcass of an interlocked metal strip, an internal sealing sheath, a cylindrical pressure vault of a winding of an interlocked profiled metal wire wound in a helix with a short pitch, at least one ply of tensile armor wires wound with a long pitch, a wire wound with a short pitch over the ply of armor wires, the wires having a deformable sheath that partially penetrates the gaps between the windings in the at least one ply of armor wires, and an external protective sealing sheath.

Abstract: It is of the type comprising at least two reinforcing armour plies (3-6) wound in opposite senses about a longitudinal axis (A—A) and at least one pressure sheath (7), which can collapse in a given direction under the action of external pressure greater than the internal pressure in the said collapsible pipe, the collapse being able to cause a transverse elongation of the said pressure sheath, and it is characterized in that at least one stiffener (8, 9) is provided on at least one surface (7a) of the said pressure sheath, which is made of a thermoplastic, so as, during collapse, to limit the said elongation to a value of less than the elongation threshold of the said thermoplastic. Application especially to the transporting of hydrocarbons in offshore operations.

Abstract: A device for eliminating propagation of a buckle in the outer wall of a double-walled tube, where the double-walled tube comprises an outer pipe, an inner pipe and an annular space between them in which the deformable element is disposed with the external surface of the deformable element in contact with the internal wall of the outer pipe and the interior of the deformable element being spaced outward from the inner pipe and having a sheath on the interior of the deformable element. The deformable element may be a wound wire, a profiled wire, an interlocked wire with interlocked turns, a non-interlocked wire, a spring with turns urged outwardly or reinforcement with turns urged outwardly and bearing blocks in the annular space on the inner pipe for at least one end of the reinforcement.

Abstract: An ultra dense composite strip for flexible pipe having armouring formed of longitudinal carbon fibers provided within a thermoplastic or thermosetting matrix in the form of a flat ribbon with a substantially rectangular cross-section, whereof at least one of the surfaces of the strip is reinforced with a film made integral with said surface, over substantially its whole width and over substantially its whole length.

Abstract: It is of the type comprising at least two reinforcing armour plies (3-6) wound in opposite senses about a longitudinal axis (A-A) and at least one pressure sheath (7), which can collapse in a given direction under the action of external pressure greater than the internal pressure in the said collapsible pipe, the collapse being able to cause a transverse elongation of the said pressure sheath, and it is characterized in that at least one stiffener (8, 9) is provided on at least one surface (7a) of the said pressure sheath, which is made of a thermoplastic, so as, during collapse, to limit the said elongation to a value of less than the elongation threshold of the said thermoplastic.

Abstract: In combination, a lower pipeline, an upper pipeline which crosses the lower pipeline, and at least one pipeline crossing module for supporting the upper pipeline above the lower pipeline. The pipeline crossing module may comprise a spacing element; a clip element attached to the spacing element and sized for surrounding the upper pipeline while permitting the module to rotate about the upper pipeline to a position in which the module is disposed downward from the upper pipeline. The at least one module may comprise a first module and a second module, the first module and the second module being disposed on the upper pipeline so as to define a downward-facing support surface for contacting an upper surface of the lower pipeline to support the upper pipeline thereon.

Abstract: A device for arresting the propagation of a buckle appearing on an outer tube of a double-walled rigid pipe intended to transport hydrocarbons and consisting of two coaxial tubes. The double-walled pipe is of the reelable type and intended for very great depths and consists of a thick and rigid annular transverse partition fastened to the inner tube and to the outer tube. The partition is joined to the outer tube and to the inner tube by means of an outer and inner sleeve having the same diameter as the outer and inner tubes and fastened to the latter.

Abstract: A device for arresting the propagation of a buckle appearing on an outer tube of a double-walled rigid pipe intended to transport hydrocarbons and consisting of two coaxial tubes. The double-walled pipe is of the reelable type and intended for very great depths and consists of a thick and rigid annular transverse partition fastened to the inner tube and to the outer tube. The partition is joined to the outer tube and to the inner tube by way of an outer and inner sleeve having the same diameter as the outer and inner tubes and fastened to the latter.

Abstract: In an umbilical, one or more steel rods, which provide strength and ballast, are wound helically within the umbilical along with the steel tubes and/or elongated active umbilical elements. These steel rods replace some or all of the thermoplastic filler elements that would otherwise be included within the umbilical. An umbilical according to an embodiment of the invention may include a plurality of steel tubes helically wound around a core, and at least one substantially solid steel rod helically wound around the core, the steel rod being arranged in a void between the steel tubes. Thus, the invention avoids the need to apply additional armoring layers to the outside of the umbilical for strength and ballast.

Abstract: It is of the type comprising, from the inside to the outside, a flexible metal tube 2 having a helical winding of turns, an internal sealing sheath 3 arranged around the said flexible metal tube, at least one armouring ply 5 wound around the said internal sealing sheath and at least one external sealing sheath 7, the internal sealing sheath being extruded onto the flexible metal tube using extrusion means, characterized in that it furthermore consists in heating the said flexible metal tube 2 upstream of the extrusion means and to a temperature below 100° C.

Abstract: The invention concerns an annular clamping ring in particular for laying oil ducts including a rigid annular base (2) supporting with support apparatus a coaxial ring-shaped assembly of vertical jaws (4) mobile in the diametral planes; said apparatus includes long connecting rods (14) articulated on the base (2) and on the outside of the jaws (4) in an almost vertical position, and the rigid annular body (3) enclosing the jaw (4) assembly, mobile in vertical translation by means of controllable cylinder actuators (6) linking it to the base (2); the jaws (4) are linked with the annular body (3) by at least two connecting rods (5) forming an articulated parallelogram, such that the annular body (3) vertical displacement relative to the base (2) causes a substantially radial and synchronized displacement of the jaw assembly (4).

Abstract: A pipeline for transmitting oil or other substance which forms a solid residue such as wax when the substance is cooled, as in a subsea oil pipeline. Pass a tube through the interior of the pipeline, e.g., at the wall of the pipeline. Transmit heated liquid or water through the tube for heating the material being passed through the pipeline to a temperature which avoids or eliminates the solid residue and for heating the pipeline.