A flexible tubular structure for oil exploitation, said flexible tubular structure having at least one reinforcing layer and at least one layer of a fluoropolymer compound, wherein said fluoropolymer compound has a composition including a polyvinylidene fluoride homopolymer and a vinylidene fluoride/fluorinated comonomer copolymer, and a plasticizer. The proportion by weight of hexafluoropropylene monomer in the copolymer is greater than 25%.

Techniques for implementing and/or operating a pipeline system that includes a pipe segment and a pipe repair assembly. The pipe segment includes tubing having an inner barrier layer that defines a pipe bore through the pipe segment, an intermediate layer including solid strip wraps implemented around the inner barrier layer such that gaps are defined between adjacent solid strip wraps, and an outer barrier layer implemented around the intermediate layer. The pipe repair assembly includes an auxiliary patch secured at least across a break in a solid strip wrap in the intermediate layer of the pipe segment that is exposed by a hole in the outer barrier layer of the pipe segment; and outer material disposed over the auxiliary patch via an injection machine to fill the hole in the outer barrier layer of the pipe segment.

A flexible pipe includes one or more outer layers, a primary liner disposed internal to the one or more outer layers, and a removable liner disposed internal to the primary liner. Additionally, a flexible piping system includes the flexible pipe with a first end and a second end. Further, an annulus is disposed between the primary liner and the removable liner. Furthermore, a pressure port is provided and extends from the annulus to an outer surface of the flexible piping system. An end fitting is disposed at the first end of the flexible pipe.

Techniques for implementing a pipeline system that includes a segment and a pipe fitting. The pipe segment includes an inner barrier layer, a first intermediate layer in an inner tubing annulus, an intermediate barrier layer disposed around the inner tubing annulus, a second intermediate layer in an outer tubing annulus, and an outer barrier layer disposed around the outer tubing annulus. The pipe fitting includes a fitting body that defines a fitting bore, a fitting jacket secured to the fitting body to define a tubing cavity, in which the fitting jacket is conformally deformed around the outer barrier layer of the pipe segment, and an annulus divider ring secured to the fitting jacket to divide the tubing cavity into an outer fitting annulus and an inner fitting annulus, in which the annulus divider ring is conformally deformed around the intermediate barrier layer of the pipe segment.

Methods and apparatus are disclosed. The apparatus includes a substantially cylindrical mount body (350) comprising a first open mouth at a first end of the cylindrical body (350) and a further open mouth at a remaining end of the cylindrical body, a substantially cylindrical inner surface, and an outer surface that includes a plurality of spaced apart substantially parallel recessed regions that extends circumferentially around the body, wherein the cylindrical body (350) is tapered at each end and at least one securing element is located between the recessed regions.

A high-pressure hose includes: an internal rubber layer; an external rubber layer; reinforcement layers having even number of layers, two or more of the reinforcement layers are provided between the internal rubber layer (10) and the external rubber layer (20), a plurality of reinforcement wires (41a to 44a) are wound around the reinforcement layers in a spiral shape such that winding directions of the reinforcement wires (41a to 44a) alternate; and intermediate rubber layers (51 to 54), each of which is disposed between the reinforcement layers (41 to 44) having even number of layers. A same winding angle (α) is set for the reinforcement wires (41a to 44a) in all levels of the reinforcement layers (41 to 44) having even number of layers, and a winding pitch (P) of the reinforcement wires (41a to 44a) in the reinforcement layers (41 to 44) having even number of layers is set to increase in an order from a side of the internal rubber layer (10) to a side of the external rubber layer (20).

A conduit, particularly flexible conduit comprises an inner tubular housing, at least one reinforcing layer at least partially disposed around the inner housing, an outer protective sheath at least partially disposed around the at least one reinforcing layer, and optionally a thermally insulating layer disposed between the at least one reinforcing layer and the outer protective sheath. At least one of the outer protective sheath and the thermally insulating layer comprises a thermoplastic vulcanizate composition.

A flexible pipe body and a method of providing electrical continuity are disclosed. The flexible pipe body comprises a first armour layer formed from a helical winding of a metal tape element, a further armour layer formed from a helical winding of a further metal tape element, and at least one intermediate layer between the first and further armour layers, said intermediate layer comprising a helically wound electrically insulating tape element (800.sub.0, 800.sub.1, 800.sub.2, 800.sub.3, 800.sub.4) and a helically wound electrically conductive tape element (810.sub.0, 810.sub.1, 810.sub.2, 810.sub.3, 810.sub.4).

A reinforced multi-layer hydraulic hose, including a plurality of anti-pressure layers with coiled wires or yarns at a winding angle of about 54.7° with respect to a longitudinal central axis of the hose, and at least one anti-tensile stress reinforcing layer that improves the resistance to the axial force of the hose and has at least one plait or coil of steel wires at a winding angle of less than 35°, in which the hose, owing to the high resistance to the axial force, can be used in a rectilinear configuration to supply a hydraulic fluid also in the presence of significant axial forces.

A method for attaching at least one transverse anchorage element to an armor element intended to be housed in an end-fitting of a flexible pipe, including the following steps: the supply of an attachment device accepting an anchorage element; the bringing of an opening to face the armor element; the melting of one end of the anchorage element facing the armor element and of a region of the armor element facing the anchorage element, inside the cavity of the attachment device; the forging of the anchorage element transversely on the armor element, using the attachment device; and the formation of a weld connecting the anchorage element and the armor element.