Abstract: A collapse tolerant flexible pipe and method of manufacturing same according to which an inner tubular layer is provided within an outer tubular layer in a coaxial relationship thereto. The inner layer maintains the maximum allowable strain on the outer layer below a value that will cause damage to the outer layer when the pipe collapses.

Abstract: A flexible pipe in which a layer of wound tape extends adjacent a surface of a tubular member to limit or prevent molecular migration through the tubular member.

Abstract: A flexible pipe and a method of manufacturing same according to which a tubular sheath is provided that defines a longitudinal passage for receiving a conveyed fluid, a tape is formed by a plurality of metal fibers supported by a strip of flexible material to form a tape, and the tape is wound around the sheath.

Abstract: A flexible method that includes a tubular member defining a longitudinal passage adapted to contain a conveyed fluid, and a plurality of layers of flexible material helically wrapped around the tubular member.

Abstract: An end fitting in which to receive a flexible pipe end to be joined includes an annular seal unit comprised of a resilient elastomeric composition contained in a tapered rigid housing ring force fit in a tapered recess of a surrounding component so as to engage the outer surface of the received pipe end.

Abstract: An end fitting for tubular member and a method of applying an end fitting to a tubular member, according to which an end portion of the tubular member is placed in an annular space defined between an outer ferrule and a tubular insert having a tapered inner wall and a radially outwardly-directed force is applied to the insert to force it into engagement with the tubular member.

Abstract: A flexible pipe and a method of manufacturing same according to which an inner sheath is surrounded by at least one tensile layer, and an outer sheath of polymeric material consisting of an olefin polymer blended with at least one thermoset elastomer is disposed around the tensile layer.

Abstract: A flexible pipe formed by multiple layers of different materials, and one or more vent passages are provided in one of the layers for venting any gases permeating through the pipe.

Abstract: A flexible pipe and a method of manufacturing same according to which the pipe is formed by multiple layers of different materials and suitable for use in subsea and land-based applications. (It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure; and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims under 37 CFR §1.72.

Abstract: A flexible pipe formed by multiple layers of different materials, one of which has a vent passage.

Abstract: A swivel joint for coupling a first conduit to a second conduit includes a swivel bearing comprising a body of fluid. The swivel bearing eliminates the creation and transmission of torsional and shear loads when one or both of the conduits are axially loaded.

Abstract: A flexible pipe and a method of manufacturing same according to which the pipe is formed by multiple layers of different materials and suitable for use in subsea and land-based applications.

Abstract: A flexible conduit constructed of overlapping layers of sealing and strengthening materials designed to resist tensile, compressive, and axial forces is employed as a submerged flow line carrying pressurized fluid. Sealing material layers disposed radially on either side of the strengthening layers isolate the strengthening layers from the liquids that contact the internal and external conduit walls. The innermost seal layer is positioned within a burst layer that protects the external strengthening layers from pressure-induced damage. The annular area between the strengthening layers is continuously vented to the atmosphere to prevent pressure damage to the strengthening layers caused by gases leaking or permeating into the annular area through the seal layers. End connectors join sections of the conduit together and connect the vents of the sections to each other to form a continuous vent passage that vents the annulus gas at the water surface.

Abstract: The end fitting of a flexible flowline is provided with a mechanical clamp that secures the end fitting to the flowline while isolating the sealing area between the end fitting and the flowline from tension forces exerted on the flowline body. The pressure seal between the end fitting and the flowline is disposed behind the mechanical clamp so that the seal area of the flowline remains unaffected by flowline tension forces. The flowline is connected to the end fitting with a tubular assembly sleeve that is concentrically disposed between layers of the flow conduit adjacent the conduit end. During the initial assembly of the end fitting to the flowline, collet fingers in the assembly sleeve are snapped behind a receiving shoulder formed internally of the end fitting. The assembly sleeve may be welded to the flowline end before the sleeve is inserted into the end fitting.

Abstract: A flexible conduit formed by a helically wound band of metal that resists burst pressure. The band has a leading edge hook and a trailing edge hook that engage and interlock. The cross-section of the band has a radially asymmetrical Z-shaped profile. When the band is helically wound, the downstream hook of one turn of the band is received in the upstream valley of the previous turn of the band so that the downstream and upstream hooks form an interlock holding the windings together. In the wound configuration, the thickness of the profile between the upstream valley and the internal surface of the tube is greater than the thickness of the profile between the downstream valley and the external surface of the tube to provide greater material thickness to reduce contact stress at the hook and valley interface and to reduce alternating stresses in the valley corners.

Abstract: A tubular sleeve has a first end inserted between concentric inner and outer layers of a flexible flowline. The tubular sleeve is welded to the inner sleeve. The tubular sleeve has serrated outer surfaces for cutting into the outer layer of the flexible flowline, or alternatively, has saw tooth edges at its one end for cutting into the outer layer of the flexible flowline. The outer end of the tubular sleeve is fixedly attached to the interior of a cup-shaped end piece, either by a snap coupling or by a threaded connection.