Patent ID: 6516833
Filing Date: 2003-02-11
Classification: E21B,F16L

Abstract:
A flexible tubular conduit with a main conduit axis and having a reinforced wall structure comprising at least one component wound helically,the component comprising a body having one or more projections extending axially from one or both body sides and a corresponding number of sockets on the opposing body sides, the projections of one turn of the winding engaging in the sockets of the next turn of the winding, each projection having an enlarged head portion connected to the body by a narrow neck portion, and each socket having an enlarged portion to receive the head portion of the corresponding projection and a narrow opening on which the neck engages to hold the projection captive in the socket, the sockets and projections having dimensions to allow a limited relative rotation between the adjacent turns of the winding and to resist separation, closing, and relative radial movement of the respective turns, wherein the tubular conduit is configured to operate at pressures of greater than 50Ã—105 N/m2.