The Tweneboa-Enyenra-Ntomme (TEN) oil and gas project within the Jubilee Fields of Ghana in the country’s Western Region is 96 per cent complete, Tullow Oil Plc has announced.
“The TEN Project remains on schedule and within budget. The project is now over 96% complete and is expected to deliver first oil within the next three to six weeks,” the oil firm said on Thursday June 30.
Hook-up and commissioning of the FPSO, connecting the pre-drilled wells to the vessel via the extensive subsea infrastructure, is nearing completion.
Tullow said during July, the integrated start-up sequence is expected to be initiated with water injection to the Enyenra reservoir being followed by oil production. This sequence will then be repeated for the Ntomme reservoir.
A gradual ramp-up in oil production towards the FPSO capacity of 80,000 bopd is anticipated around the end of 2016 as the facilities complete performance testing and wells are brought up to optimum rates.
Tullow estimates that TEN average annualised production in 2016 will be around 23,000 bopd gross (net: 11,000 bopd).
Drilling is not expected to recommence on the TEN field until after the resolution of the Côte d’Ivoire and Ghana border dispute through the ITLOS tribunal whose decision is expected in late 2017.
The associated gas produced at TEN will be re-injected into the Ntomme reservoir gas cap until gas export begins. Gas export was planned to start 12 months after field start-up, with the Tweneboa gas reservoir coming on stream a further 12 months later. However, options to accelerate gas export are currently being evaluated as the fabrication of the gas export facilities is ahead of schedule and is expected to be complete in late 2016, some six months early.
Background
In March 2009, the Eirik Raude rig successfully drilled the Tweneboa-1 wildcat well in the Deepwater Tano licence, around 20 km west of Tullow’s Jubilee field and some 45 km offshore from the Ghana mainland. This initial discovery was followed up by a series of further successful appraisal and exploration wells which resulted in the discovery of the Tweneboa-Enyenra-Ntomme (TEN) field.
In May 2013, Ghana’s Minister of Energy at the time approved the Plan of Development for the field and Tullow commenced with its second major operated deep water development project in Ghana. Similar to Jubilee, the development includes the use of an FPSO, which has a facility production capacity of 80,000 bopd, which will be tied in to subsea infrastructure across the field.
The vessel was converted in Singapore and in September 2015, the vessel was officially named ‘FPSO Prof. John Evans Atta Mills’, after the late Ghanaian president who oversaw First Oil from Ghana’s Jubilee Field in 2010. To date, all the key milestones of the project have been met, including the sail away of the FPSO from Singapore to Ghana on 23 January 2016.
Source: Ghana/AccraFM.com/100.5fm
