OML 59 is a large block on the coastal swamp fringe of the Niger Delta. The licence contains the Otuo and Otuo South fields which were discovered by Elf in the 1970s. The fields were brought onstream by indigenous company ConOil in 1999. The small Obra field was discovered in 2005 and brought onstream in 2007. The fields are tied back to a Mobile Offshore Production Unit (MOPU) and crude is exported using Chevron's Pennington oil terminal.