Technip France

Fabrice Bectarte

Alain Coutarel

Patrice Joël Louis Jung

Pascal Estrier

Jean Rigaud

A flexible pipe and a method of producing it. The pipe has two tubular structures, internal and external, and a tubular axial blocking layer. The tubular blocking layer comprises two section wires each having a trapezoidal cross section. The trapezoidal cross section defines a base and two sloping lateral flanks. The base of one of the two section wires is oriented toward the internal tubular structure. The base of the other section wire is oriented in the opposite direction. The section wires are wound side by side forming contiguous coils. The internal tubular structure includes a wire having a wound structure to form transversely blocked coils. One of the two section wires is wound against said structure coils.

Flexible pipe having high resistance to axial compression and method of manufacturing such a pipe

The invention relates to a flexible pipe for transporting hydrocarbons, comprising the following, from the inside towards the outside: a cylindrical structural set adapted in such a way that it can withstand radial stress and at least one first armure lap, said first armure lap comprising a plurality of armure threads wherein the armure threads consist of formed and flattened metal threads, the width of said armure I being greater than the thickness e when they are wound in parallel in the form of a spiral with a longitudinal pitch around the structure set, said threads forming an angle of less than 60&#xb0; angle with the generators (G) of said structural set, and the width/thickness ratio of the armure threads is greater than 4.

Stabilized flexible pipe for transporting hydrocarbons

For limiting the lateral buckling of tensile armor plies of an underwater flexible pipe, that can be used in the offshore oil industry, the plies include from the outside inward, at least one external polymer sheath, a first outward retention layer of a defined thickness Kwound around an upper outer tensile armor ply, at least one second inward retention layer of a defined stiffness Kwound around each of at least one lower inner tensile armor ply. Stiffness Kis preferably less than stiffness K, i.e., the retention layers outward are less stiff. There is then an internal polymer sheath.

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Rouen, France

Fabrice Bectarte