Statoil ASA , together with partners Petoro AS, Det norske oljeselskap ASA and Lundin Norway AS, has confirmed significant additional volumes in its appraisal well in the Aldous Major South discovery (PL265) in the North Sea.
The results of appraisal well 16/2-10 have increased production license PL265 estimates to between 900 million and 1.5 billion barrels of recoverable oil equivalent.
This is a doubling of the previously announced PL265 volumes of between 400 and 800 million barrels of oil equivalent.
It has previously been confirmed that there is communication between Aldous in PL265 and Avaldsnes in PL501, and that this is one large oil discovery.
“Aldous/Avaldsnes is a giant, and one of the largest finds ever on the Norwegian continental shelf. Volume estimates have now increased further because the appraisal well confirms a continuous, very good and thick reservoir in Aldous Major South,” says Tim Dodson, executive vice president for Exploration in Statoil.
Final data show that the oil column in appraisal well 16/2-10 is approximately 60 metres. These data also confirm that the reservoir is of the same, excellent quality as in the Aldous Major South discovery well 16/2-8. This is the main reason for the substantial upward revision of PL265 volumes.
The Aldous/Avaldsnes discovery extends over a large area of approximately 180 square kilometres, and there is considerable variation in both reservoir thickness and oil column height in the structure. Additional appraisal wells will be drilled in both licenses.
Statoil will await the results from these wells before providing updated and more accurate volume estimates for the combined discovery.
After completion of the appraisal well, the Transocean Leader drilling rig will move to the Troll field in the North Sea.
Aldous Major South is situated in production license PL265 in the North Sea, and appraisal well 16/2-10 was drilled 4.2 kilometres north of the 16/2-8 discovery well.
Statoil is the operator and has a 40% interest in PL265. The partners are Petoro AS (30%), Det norske oljeselskap ASA (20%) and Lundin Norway AS (10%). Well 16/2-10 is the seventh exploration well in PL265. The license was awarded in the North Sea Awards 2000.
Avaldsnes is located in production licence PL501. Lundin Norway AS is the operator with a 40% interest, while partners Statoil and Maersk have 40% and 20% interests, respectively.
Subsea 7 Inc. and Acergy S.A. merged in January this year, bringing together two very strong subsea companies to create a global leader in seabed-to-surface engineering, construction and services. With a 12,000 strong workforce worldwide, the new Subsea 7 has the highest concentration of expertise in its industry sector. It has a global engineering team of around 1,500 professionals addressing the key engineering disciplines within its business. Subsea 7 is well placed to deliver technologies that address its clients’ requirements, for example, in the offshore rigid pipelay market, not only does the company have an industry-leading engineering design capability, but also the full suite of installation techniques of: Reel-lay; S-lay; Steep S-lay; J-lay and Bundlelay.
The new Subsea 7 enables clients to access a fleet comprising 42 vessels and on booth #2824 in the Reliant Centre, Subsea 7 will showcase its technically advanced fleet, in particular, Seven Borealis, a new pipelay/heavy lift vessel due to be delivered to Subsea 7 during the first half of 2012. Seven Borealis will be ideally suited to meeting the exacting requirements of ultra-deep and deepwater projects in the world’s harshest environments. Subsea 7 will demonstrate its project management experience, in executing major engineering, procurement, installation and construction projects, this is endorsed by a newly awarded milestone US $1 billion contract by Petrobras for four decoupled riser systems to be installed in the Guará and Lula fields located offshore Brazil, in water depths of approximately 2,200m. On top of the challenges of scale posed by the project are the ground-breaking design innovations. The project is based on installing four very large submerged buoys, weighing around 1,900 tonnes each, approximately 250 metres below the surface, along with twentyseven steel catenary risers (SCRs) and associated pipeline end terminations.
Subsea 7 will also have an update on the commercialisation of its first new Autonomous Inspection Vehicle (AIV), expected to be available in late 2011. A significant amount of interest was generated during OTC 2010 where Subsea 7 had a scale model of the AIV on its booth to enable visitors to understand the technology.
At OTC 2011, Subsea 7 will deliver 11 technical papers, showcasing examples of its capabilities in deepwater markets, its engineering and technical expertise.
Technical papers include:
• Conger – Technical Challenges and success for Rigid Pipeline
• Deployment lowering operations (2 papers)
• Deepwater Field Developments
• Lateral Buckling Mitigation in Deepwater
• Qualification of Large Diameter Fiber Rope – DNV
• Angola LNG Pipeline bundle
• Design, construction and management of Hybrid Riser Towers (2 papers)
• Reel Clad SCR Weld Fatigue
Recruitment and talent-spotting will also be high on the agenda for Subsea 7 at this year’s event. At present, the company is looking to recruit a substantial number of people globally, in a range of disciplines including engineering, project management, operations management and support functions.
Steve Wisely, Subsea 7’s Executive Vice President – Commercial, commented:
“This year’s OTC is an ideal opportunity for the new Subsea 7 to give visitors a real insight into the extended fleet capabilities, technical expertise and depth of engineering and project management resources that are available to help them meet their deepwater challenges in particular. We will also be actively recruiting and hope to attract a number of new people to join the company, through the variety of opportunities we currently have available.”