Oromin Spuds First Well on Santa Rose Dome Prospect in Argentina

Oromin, through the Argentina subsidiary, Exploraciones Oromin S.A. ("Oromin"), commenced drilling its first well, OLE.MD.SRE X-2001, on the Santa Rosa Dome Prospect on July 15, 2009 at 5PM, Pacific Daylight Savings Time.

It is anticipated that it will require less than 14 days to drill to the target depth of 1,300 meters. The Santa Rosa Prospect is a 200 to 300 square kilometer shallow dome structure located within an approximate 7,600 square kilometer concession located in the Cuyana Basin, Mendoza Province, Argentina.

The interest holders of the Santa Rosa license are indirectly Oromin as to 67.52% and Australian Otto Energy Limited as to 32.48%. Oromin is the project operator.