Abstract: An interface system between an end of a filament composite tube and a rigid interior end fitting. The system includes a plurality of traplocks having varying wall thicknesses at the bases thereof. The traplocks also have varying angles of the bearing faces thereof. A Y-shaped seal is disposed between an inboard end of the fitting and the inside of the composite tube.

Abstract: A well flow conductor and method of manufacture therefor. The well flow conductor includes: (1) a composite liner tube composed of a plurality of overlapping, resin-bonded composite plies and adapted to conduct a fluid flow therethrough and (2) a composite outer structure surrounding the composite liner tube and composed of a plurality of overlapping, resin-bonded composite plies arranged in a plurality of opposed helices about a centerline of the composite liner tube, the opposed helices intersecting at predetermined axial and radial locations on an outer surface of the composite liner tube to form nodes extending radially outwardly from the outer surface to form standoffs therefrom, the standoffs capable of centralizing the well flow conductor within an interior of a casing having a larger radius than that of the well flow conductor.