Subsea 7, The UK Engineering, Construction And Subsea Services Company, Received A Contract From Tullow In The Jubilee Field, Offshore Ghana, At Water Depths Of Up To 1,000 Meters.
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 significant contract for Subsea 7, worth between US$ 50 million and US$ 150 million.
The scope of work for Subsea 7 includes installing the Buoy Turret Loading (BTL) system from APL, a group within NOV Completion & Production Solutions, along with the respective suction piles and EPCI activities, including two offloading lines for the BTL and additional hang-off and slide activities for 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.
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Gilles Lafaye, Vice President of Subsea 7 in Africa, said: “This award reflects our initial commitment to design and engineering and the consortium’s experience in 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 the Mahogany-1 (M-1) and Hyedua-1 (H-1) exploration wells, which were drilled about 5 km apart and encountered large continuous accumulations of crude oil. Wells M-1 and H-1 discovered substantial liquid quantities of 95 m and 41 m, respectively, in high-quality stacked reservoir sands.
In July 2009, the Minister of Energy approved the Phase 1 Development Plan, which included the use of a FPSO with an installation capacity of 120,000 bopd. In December 2010, the field began operations.
A problem with the roll of the Jubilee FPSO Kwame Nkrumah was identified in February 2016. In June 2016, Tullow and its partners determined that the long-term solution was to convert the FPSO into a permanently anchored spread-moored installation. The FPSO was disclosed in its current position in February 2017.
The next phase of the project to stabilize the tower’s roll was completed in the first half of 2018, and the final task of rotating the FPSO to its permanent heading and performing the final mooring will take place at the end of 2018.

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