Tullow has interests in two exploration licences offshore Ghana where, in 2007, two successful exploration wells discovered the substantial Jubilee field which straddles the boundary between the two blocks; Deepwater Tano and West Cape Three Points.
The Minister of Energy in Ghana formally approved the Jubilee field Phase 1 Development Plan and Unitisation Agreement on behalf of the Government of Ghana in July 2009. The field has continued to ramp up towards capacity production following acid stimulation on a number of the original Phase 1 wells and a number of new Phase 1A wells coming on stream. Gross production is currently around 110,000 bopd.
In March 2009, a further major discovery was made in the Deepwater Tano block. The Tweneboa-1 exploration well discovered a highly pressured light hydrocarbon accumulation. This was followed by the successful Tweneboa-2 well announced in January 2010 which encountered oil and gas-condensate 6km south of the original discovery. Since then, a successful E&A campaign has resulted in the Tweneboa-Enyenra-Ntomme (TEN) discovery and the Plan of Development was approved by the government in May 2013.