Despite the limited information released on upstream activity in South Sudan, Wood Mackenzie estimates over 110 exploration wells have now been drilled in the country's portion of the Muglad - Sudd Rift Basin. The current civil war has seen exploration activity severely restricted since 2012; a definitive end to the conflict is difficult to predict but it seems unlikely exploration will resume in the country until at least 2017. When it does, future explorers should find material oil volumes, and value can be created. We expect the majority of future discoveries to be small-to-medium sized pools. Infrastructure is key - the GNPOC's export pipeline to the Red Sea has spare capacity and new finds could achieve short lead times. However, transportation costs are high. Opportunities to access the basin should become available over the next five years, as key acreage is due for relinquishment in 2016, and other licence holders in the frontier areas of the basin may seek farm-out deals.