The US independent said output at the truss spar began to flow on 14 January.

“Heidelberg achieved first oil significantly ahead of schedule and favourable to budget,” Anadarko said. It did not provide initial production details.

The facility, sister to the Lucius spar that began operations last year, is situated in Green Canyon Block 859 in 5300 feet of water.

It has capacity for 80,000 barrels per day of oil and 80 million cubic feet per day of natural gas.

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