The Brazilian oil company and the French contractor responsible for the riser system for the ­BW Pioneer FPSO ­in the ­Cascade-Chinook field separately said they will launch an investigation.

“Petrobras will only be able to forecast the beginning of production of the project when this ­investigation is concluded,” Petrobras told Upstream. Petrobras said it ­notified the US Bureau of Ocean Energy Management, Regulation & Enforcement (BOEMRE) of the incident on 23 March.

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