Related documents
TEN Project brochure
First oil has flowed from the Tweneboa, Enyenra, Ntomme (TEN) fields offshore Ghana, to the FPSO Prof. John Evans Atta Mills.
Download PDF 6,607KBTEN project Environmental Impact Statement volume 1
Download PDF 46,113KB19 March 2015
TEN project Environmental Impact Statement volume 2
Download PDF 20,963KB19 March 2015
TEN project Environmental Impact Statement – modelling report
Download PDF 2,816KBRelated links
First oil flowed from the Tweneboa, Enyenra, Ntomme (TEN) fields offshore Ghana, to the FPSO Prof. John Evans Atta Mills in August 2016.
This milestone was reached on time and on budget three years after the Plan of Development was approved by the Government of Ghana in May 2013.
Exploration success
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.
Developing the TEN fields
In May 2013, The Ghana Minister of Energy 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 into 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. The FPSO sailed away from Singapore to Ghana on 23 January 2016.
The FPSO arrived in Ghana in early March 2016 where it was moored to the seabed before being connected to the risers and subsea infrastructure.
First oil was achieved on time and on budget in August 2016, three years after the Plan of Development was approved by the Government of Ghana.
2022 and 2023 Production
Net production from the TEN field was 12,500 bopd in 2022 and is expected to average around net: 11,000 bopd in 2023.
TEN development area equity
| Tullow (operator) | 54.84% |
| Kosmos | 20.38% |
| GNPC | 20.95% |
| Petro SA | 3.82% |
Environmental Impact Statement
TEN achieves First Oil
First oil has flowed from the Tweneboa, Enyenra, Ntomme (TEN) fields offshore Ghana, to the FPSO Prof. John Evans Atta Mills. This milestone has been reached on time and on budget three years after the Plan of Development was approved by the Government of Ghana in May 2013.
TEN Project secondees in Singapore
The TEN Plan of Development included commitments by Tullow Oil and its Partners to create opportunities for Ghanaians to gain experience and develop skills as integral members of the project team. This video profiles some of the secondees in Singapore.
TEN FPSO Conversion Story
Watch the TEN FPSO conversion unfold, documenting progress from 2013 up to the summer of 2015.
TEN Project FPSO Naming Ceremony
A short video summary of the TEN Project FPSO Naming Ceremony held in Singapore on 30 September 2015. The vessel was officially named ‘FPSO Prof. John Evans Atta Mills’, by the First Lady of the Republic of Ghana, Dr. Nana Lordina Mahama. The FPSO is named after the late Ghanaian president, who oversaw first oil from the country's Jubilee Field in 2010.
TEN Project uses local Ghanaian suppliers
Working with Ghanaian suppliers has been a key part of the TEN Project and many local companies have been involved. This video profiles the work completed by Hydra Offshore Group, Seaweld Engineering, Orsam Ltd, and Harlequin International Ghana.
TEN Project Manifold Loadout
The TEN Project’s four subsea manifolds and two riser bases were fabricated by FMC Technologies in Houston, USA. They were recently loaded out onto a transport vessel on their way to Ghana to be installed on the seabed in the TEN fields.
