Energy XXI is an independent oil & natural gas exploration and production company whose growth strategy emphasizes acquisitions, enhanced by its value-added organic drilling program.

The company's core properties are offshore and onshore the Louisiana Gulf Coast. Offshore properties are primarily comprised of large legacy oil fields where activity focuses on exploitation, while onshore properties are primarily natural gas focused, with a large exploration component. Proved reserves and production are weighted toward oil at 66% and 68% respectively.


Energy XXI was formed to acquire and exploit producing oil and gas reserves. Initial funding in October 2005 was through a $300 million private placement equity offering in the U.S. and U.K. and a listing on the London Stock Exchange Alternative Investment Market (AIM).


In February 2006, Energy XXI agreed to acquire Marlin Energy for $421 million. The transaction was completed 42 days later, thereby upholding management's commitment to its IPO shareholders to effect a transaction within four to six months. The company has since completed four additional major acquisitions including the December 2010 purchase of Gulf of Mexico Shelf properties from ExxonMobil, making Energy XXI the third largest oil producer on the Shelf.