Petrobras has delayed the start of oil production from its Cascade-Chinook deepwater oil development in the US Gulf of Mexico to the end of this year.

The development is located 165 miles offshore Louisiana, US, in a water depth of more than 8,000ft.

Production was rescheduled from the middle of the year due to the repair of a link that resulted in the collapse of the five freestanding hybrid risers connected to the Cascade-Chinook FPSO.

Petrobas had initially planned to start production in 2010, but the deepwater drilling moratorium passed by the US Government caused the 2011 delay.