POST-REMOVAL TESTING CONFIRMS ROBUSTNESS OF TOP TENSION RISER SYSTEMS

摘要

After approximately 10 years of service in the GOM's Green Canyon region, Anadarko decided to recover components of the top tension riser (TTR) system from the Constitution truss spar, following the abandonment of two wells in approximately 5,000 ft of water. The recovery would give Anadarko an opportunity to assess expected in-service wear that occurred on the TTRs, as well as estimate the remaining service life. Along with Vallourec providing 12 3/4-in. T95 pipe, the primary connector was the VAM TTR, used as the outer production riser. The first production TTR was run in 2006 and 2007.