Subsea 7, a UK subsea engineering, construction and services company, has been awarded a contract by Tullow on the Jubilee field, offshore Ghana, in water depths of up to 1.000 metres.
Subsea 7 said on Wednesday that the engineering, procurement, construction and installation (EPCI) contract was awarded under a consortium formed by Subsea 7 Volta Contractors and NOV Oil & Gas Services Ghana Ltd. This award is a sizable contract for Subsea 7, worth between $50 million and $150 million.
Subsea 7's scope of work includes the installation of the Buoy Turret Loading (BTL) system by APL, a group within NOV Completion & Production Solutions, with the respective suction stacks and EPCI activities, including two offloading lines for BTL and the additional hang-off platform and skid to the FPSO. A significant portion of the manufacturing will be completed locally, in Ghana, and the offshore installation will take place in 2020, the company said.
Gilles Lafaye, Subsea 7 Vice President Africa, said: “This award reflects our early commitment to design and engineering and the consortium's experience on comparable projects in the region. This project builds on our presence in the Ghanaian market and our long-term relationship with Tullow. ”
Jubilee
The Jubilee field was discovered in 2007 by exploration wells Mahogany-1 (M-1) and Hyedua-1 (H-1), which were drilled at approximately 5 km and intersected large continuous accumulations of crude oil. Wells M-1 and H-1 uncovered net bulks of 95 m and 41 m, respectively, in high quality stacked reservoir sands.
In July 2009, the Ministry of Energy approved the Phase 1 Development Plan, which included the use of an FPSO with an installation capacity of 120.000 bopd. In December 2010, the field went into operation.
A bearing problem with the Jubilee FPSO Kwame Nkrumah's turret bearing was identified in February 2016. In June 2016, Tullow and its partners established that the long-term solution was to convert the FPSO into a moored permanent spread facility. The FPSO was disclosed in its current thread in February 2017.
The next phase of the project to stabilize the bearing of the tower was completed in the first half of 2018 and the final task of turning the FPSO to its permanent course and performing the final mooring will take place in late 2018.
