The Nuna field is located onshore in the Colville River Delta south of the offshore Oooguruk field. The field was discovered in April 2012 by Pioneer Natural Resources. Caelus Energy became the operator of the field in 2014 with the completion of its acquisition of Pioneer's Alaska portfolio. Caelus sanctioned the field in September 2014. The field will be developed with two onshore drill pads and production will be processed at the adjacent Kuparuk River Unit.