PULL-STYLE TENSIONER SYSTEM FOR A TOP-TENSIONED RISER

摘要

A tensioner system for a top-tensioned riser (101) in a floating platform (100) includes a hydro-pneumatic tensioner assembly (120) resiliently mounted to the floating platform, and a riser support conductor (150) surrounding the riser coaxially, wherein the support conductor conveys a pull-type tensional force from the hydro-pneumatic tensioner assembly to the riser through a riser conductor coupling assembly (500) that engages the tensioner assembly and the riser support conductor to convey the tensional force. A riser tension joint support assembly (700) conveys the tensional force from the riser support conductor to a riser tension joint on the riser. The tensioner assembly compensates for relative platform motion including pitch, heave, and yaw. Also, a reactive load assembly (400) is mounted to the platform and reacts to a two-point dynamic bending moment imposed on the riser support conductor, while resisting riser support conductor rotation.