Tullow Oil has extended its East African rift play acreage through the award of Petroleum Exploration Licence 28 in the Luangwa Trough, previously awarded to Bowleven. Tullow said the 55,000km2 block built on its existing low-cost, core East African Tertiary rift basins, giving access to three further unexplored basins. Within the first two years of the licence, Tullow plans to complete initial geological studies, acquire a full-tensor gradiometry survey and collect passive seismic data.