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.

GH_map_jubilee_713x476

   

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. 

Turret remediation project

The Turret Remediation Project is close to completion. This pioneering and unique project, which included the first ever remediation of this type at sea, required the FPSO Kwame Nkrumah to be shut down twice in the first half of 2018 for work to stabilise the turret bearing for periods of 19 days and 21 days respectively. In December 2018, the FPSO was successfully rotated to its new heading of 205 degrees and subsequently spread-moored.  

The JV Partners have also agreed to install a Catenary Anchor Leg Mooring (CALM) buoy for offtake from the FPSO and a contract award has been made. The installation of the CALM buoy is likely to take place in 2020 and is not expected to affect production.

Production performance

In the first half of 2019, gross production from the Jubilee field averaged 88,500 bopd (net: 31,400 bopd). Production was below expectations due to gas compression constraints during February which have now been resolved. Tullow’s net production increased to 34,100 bopd with the inclusion of 2,700 bopd of net production-equivalent insurance payments. The insured period associated with Tullow’s Corporate Business Interruption insurance claim ended in May 2019, three years after cover commenced. Tullow continues to insure against Business Interruption. Tullow forecasts full year gross production from the Jubilee field to average around 96,000 bopd (net: 34,000 bopd) and full year net production-equivalent insurance payments to be around 1,300 bopd.      

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 Stena Forth and Maersk Venturer drillships have been working in tandem on Ghana drilling and completion operations throughout the first half of the year with four wells drilled and three wells completed. The Stena Forth drillship has now left Ghana to commence drilling in Guyana. The Maersk Venturer will remain in Ghana and will complete the ongoing Enyenra-14 production well, a Jubilee producer and an Enyenra water-injector, before switching to drilling operations for the remainder of the year. 

Page last updated: 25 July 2019