Anadarko produced first oil at the Heidelberg field in Green Canyon Block 859 in the US Gulf of Mexico. The sister spar project to Lucius, the Heidelberg spar can produce 80,000 B/D of oil and 80 MMcf/D of natural gas and operate in 5,300 ft of water. Lucius, which started up last year, and Heidelberg were constructed with a “design one, build two” strategy that streamlined and economized several processes and enabled Heidelberg to come on line 6 months sooner than otherwise. Operator Anadarko has a 31.5% interest. Other participants are Cobalt International Energy (9.375%), Eni (12.5%), ExxonMobil (9.375%), Freeport-McMoran (12.5%), Marubeni (12.75%), and Statoil (12%).