Exxon Mobil Corp. (NYSE: XOM) began production at Hadrian South in the deepwater U.S. GoM, the company said March 30. Facilities tied back to the nearby Lucius project, the company added. Anadarko Petroleum Corp. (NYSE: APC) operates Lucius, which began producing in January.

Hadrian South is expected to produce about 300 MMcf/d of gas and 3 Mbbl/d of liquids, daily, from two wells.

Hadrian South is the company’s deepest subsea tieback, in almost a mile and a half of water.

ExxonMobil’s total net production capacity for the U.S. GoM increased by more than 45 Mboe/d. ExxonMobil holds a 46.7% interest in Hadrian South and a 23.3% interest in Lucius.

Hadrian South is about 230 m offshore in the Keathley Canyon area in about 7,650 ft of water. The discovery well, Hadrian-2, was drilled in 2008 and the appraisal well, the Hadrian-4 sidetrack, was completed in 2009.

Houston-based ExxonMobil operates Hadrian South; co-venturers Petrobras (NYSE: PBR) and Eni SpA (NYSE: E) hold 23.3% and 30%, respectively.