We have refreshed and refocused our portfolio; selling interests in assets that were no longer consistent with our strategy, investing in those that are, acquiring interest in new assets and bringing new fields into production. Our portfolio today is smaller but stronger, with less operating complexity, reduced risk, and better potential to increase and sustain returns
The multi-billion-pound Quad 204 project was designed to completely redevelop and maximise production from the Schiehallion and Loyal fields, located 175 kilometres west of Shetland. After 15 years of operating in harsh conditions and producing nearly 400 million barrels of oil, the original Schiehallion floating, production, storage and offloading (FPSO) vessel required replacement to enable continued production and recovery of a further estimated 450 million barrels from the fields. From this, the Quad 204 project was born and saw the construction of a new state-of-the-art FPSO, the Glen Lyon; renewal of much of the subsea infrastructure network; and a seven-year drilling campaign, comprising up to 20 new wells. Glen Lyon will enable production from this key hub to be extended beyond 2035.
Alligin is a two-well development in the Schiehallion Area which will be tied back subsea to the Glen Lyon FPSO. It has 20-million-barrels of recoverable oil in place and is located approximately 140 kilometres west of Shetland. It is due to come on stream in 2020.
With an estimated eight billion barrels of oil in place, the Clair field is the largest oilfield on the UK Continental Shelf. The field, located 75 kilometres west of the Shetland Islands, was discovered in 1977, but challenging reservoir characteristics and the technological limits of the time meant it was the mid-1990s before the field saw extensive drilling and 2001 before BP and partners approved a development plan. Production from the Clair field began in 2005 – 28 years after discovery.
The physical size of the Clair field dictates development via a phased approach and Clair Ridge is the second phase of development. It has involved the construction and installation of two new bridge-linked platforms, the jackets (legs) of which were installed in 2013 followed by the topside modules in 2015. Hook-up and commissioning offshore is well under way as we gear up for first oil in 2018. Clair Ridge is expected to be producing beyond 2050. With our partners, we have also completed an appraisal drilling programme to help define a possible third phase of development of the Clair field.
The Foinaven field is located 190 kilometres west of Shetland in water depths of between 350 and 520 metres. The field was discovered in 1990 and sanctioned in 1994. It was the first deepwater development on the UKCS and the first west of Shetland. First oil from the field was in November 1997. The pioneering fast-track development was based on a network of subsea wells linked via a subsea network of pipelines, control umbilicals and risers to the Petrojarl Foinaven FPSO.
Central North Sea
The Eastern Trough Area Project (ETAP) ranks as one of the largest and most commercially complex North Sea oil and gas developments of the past 20 years; nine different fields with varying ownership sharing a central processing facility (CPF). A multi-million-pound life extension project as part of the overall field development strategy got under way in 2015 and has breathed new life into this vital resource. We see significant potential and remaining field life in ETAP and, through our significant investments, expect it to produce into the 2030s.
The beginning of 2015 marked a major milestone in Andrew’s history with first oil from Kinnoull, a subsea tieback located 28 kilometres to the north of the Andrew platform. The Andrew Area Development (AAD) project was an excellent example of how we can extend the life of our existing assets. Extensive new subsea infrastructure, a new 750-tonne process module, and structural strengthening of Andrew have extended the productive life of the platform into the 2020s and provided a rejuvenated Central North Sea hub for future potential tiebacks, including the Arundel field which was brought on stream in summer 2017.
Vorlich is a two-well development in the central North Sea which is being developed as a subsea tieback to the Ithaca Energy-operated FPF-1 floating production facility which lies at the centre of Ithaca’s Greater Stella Area production hub. It has over 30-million-barrels of recoverable oil in place and is located approximately 241 kilometres east of Aberdeen. It is due to come on production in 2020.
In November, BP announced its intention to sell a package of its interests in the Bruce assets to Serica Energy plc. BP currently operates the assets, which comprise the Bruce, Keith and Rhum fields, three bridge-linked platforms and associated subsea infrastructure. Serica will replace BP as the operator of the Bruce assets subject to required approvals. The Bruce area has played a very important role in BP’s North Sea history with a strong operational and safety performance over the years. This deal is predicated on our belief that Bruce will have a better future in the hands of a company for whom the business is strategic going forward.
Operated by others
The Total-operated Culzean field (BP ownership share 32%) is one of the largest new projects to be sanctioned in the North Sea in recent years and is expected to supply around 5% of UK gas requirements. The field is a high-pressure, high-temperature gas condensate reservoir which was sanctioned in 2015. First gas is anticipated in 2019. The field will be developed with three fixed platforms and a floating storage unit. Construction is well under way and a new-build drilling rig is currently on field drilling the first development wells.
The EnQuest-operated Magnus field (BP ownership share 75%) is the UK's most northerly field, located 160 kilometres north-east of the Shetland islands. First oil from the field was achieved in August 1983.
The Shell-operated Shearwater field (BP ownership share 28%) is a high-pressure, high-temperature gas condensate field located in the Central North Sea. Shearwater was brought online in 2000 and has been developed through two fixed platforms. Shearwater remains among the biggest producing fields in the North Sea and is anticipated to continue operating into the 2020s.