Jubilee field

Ghana’s world-class Jubilee field was discovered in 2007 by the Mahogany-1 (M-1) and Hyedua-1 (H-1) exploration wells.

The two wells were drilled some 5 km apart and intersected large continuous accumulations of light sweet crude oil. The M-1 and H-1 wells discovered large net pays of 95m and 41m respectively in high-quality stacked reservoir sands. The Jubilee field straddles the West Cape Three Points and Deepwater Tano licences.

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In July 2009, the Minister of Energy approved the Phase 1 Plan of Development which included the use of an FPSO with a facility capacity of 120,000 bopd. In December 2010, the field came on-stream.

In July 2009, the Minister of Energy approved the Phase 1 Plan of Development which included the use of an FPSO with a facility capacity of 120,000 bopd. In December 2010, the field came on-stream.

The Jubilee Phase 1A development project, designed to increase production and recover additional reserves, was approved by the Government of Ghana in January 2012. Phase 1A consisted of eight additional wells which included five producers and three water injectors. 

An issue with the turret bearing of the Jubilee FPSO Kwame Nkrumah was identified in February 2016. This resulted in the need to implement new operating and offtake procedures, utilising a dynamically positioned shuttle tanker and a storage vessel.

Turret remediation project

As announced in June 2016, Tullow and its Partners established that the long-term solution is to convert the FPSO to a permanently spread moored facility. The Jubilee turret remediation work is progressing as planned and the FPSO was spread-moored on its current heading in February 2017. The capital costs associated with the remediation works are being covered by the Joint Venture Hull and Machinery insurance policy.

The next phase of the project will involve stabilisation of the turret bearing and a shut-down of 4-6 weeks is planned for the first quarter of 2018. The following phase to rotate the FPSO to its permanent heading and to carry out the final spread-mooring will take place around the end of 2018 and is expected to require a shut-down of approximately three weeks. 

Production performance

Full year 2017 gross production from the Jubilee field averaged 89,600 bopd (net: 31,800 bopd). Tullow’s Corporate Business Interruption insurance has reimbursed 7,400 bopd of net production-equivalent insurance payments, bringing expected full year effective net production from Jubilee to 39,200 bopd. Gross production in the latter part of 2017 was consistently above 90,000 bopd and we expect to build on this as we commence drilling in 2018. 

Tullow expects 2018 gross production from the Jubilee field to average 75,800 bopd (net: 26,900 bopd), which takes into account the planned shut-downs associated with the turret remediation work. Tullow’s Corporate Business Interruption insurance cover, which compensates Tullow for lost production associated with the remediation works, is expected to reimburse Tullow            10,200 bopd of net production-equivalent insurance payments. Jubilee effective net production is therefore expected to average around 37,100 bopd for 2018.

Greater Jubilee Full Field Development Plan

The Government of Ghana approved the Greater Jubilee Full Field Development Plan in October 2017, allowing Tullow and its Joint Venture Partners to prepare for a multi-year incremental drilling programme to maximise and sustain oil production and gas export. The initial focus will be the drilling and completion of new wells in the Jubilee unit area that will make use of existing infrastructure, and the completion of a well previously drilled in the Mahogany discovery. 4D seismic acquired in the first half of 2017 is being used to optimise well locations and ongoing reservoir management. Drilling will start in the 1H of 2018. 

Page last updated: 14 February 2018