APACHE NORTH SEA 10K RISER CASE STUDY THE CONTRACT Aquaterra Energy was contracted to design and deliver a ‘world first’ 10,000psi rated, 25” OD full bore drilling riser, together with associated subsea connector and installation equipment with surface tensioning. Also supplied was a complete fatigue monitoring system, including strain gauges and motion sensors, two subsea enclosures and a wave radar system. Following successful conclusion of the first two wells, Apache North Sea decided to revisit the Bacchus field to complete a third well, Bacchus Far West (B1). Aquaterra Energy was appointed to conduct a comprehensive maintenance program on the 10k Riser System and work with Apache North Sea to re-install the system onto the third well, with the use of the Rowan Gorilla

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