Patent ID: 6283206
Filing Date: 2001-09-04
Classification: E21B

Abstract:
An umbilical comprising:a flexible pipe including a collapse-resistant wall, a longitudinal passage, an interior sealing layer and an exterior sealing layer;a core within the flexible pipe, the core including a protective sheath encasing a plurality of flexible conveyance elements, a plurality of shape-conforming first fillers, a plurality of second fillers and a plurality of air hoses, the plurality of flexible conveyance elements positioned within the longitudinal passage extending from a first end of the flexible pipe to a second end thereof, at least a portion of the conveyance elements being collapse-resistant to hydrostatic pressure;a first end fitting and a second end fitting attached to opposite ends of the umbilical;each end fitting being attached to a respective shroud; andthe conveyance elements extending through each end fitting and into the respective shroud;each end fitting including:an interior sealing clamp having a first sealing ring clamped onto the interior sealing layer by an inner collar; andan exterior sealing clamp having a second sealing ring clamped onto the exterior sealing layer by an exterior collar.