TENSIONING SYSTEM FOR PRODUCTION TUBING IN A RISER AT A FLOATING INSTALLATION FOR HYDROCARBON PRODUCTION

摘要

A device for tensioning and relieving production tubing (49) extending from asubsea hydrocarbon well (107) up through a riser (63) to a floatinginstallation (87), a continuous production tubing extension (85) passingthrough a telescopic unit (67) in the upper part of the riser (63), preferablyextending above a production deck (89) on the floating installation (87),where the production tubing (49) is provided with a tubing tensioner unit (1)below and in the proximity of the lower end of the telescopic unit (67).