Statoil makes Aldous Major find

An exploration well in the North Sea’s Aldous Major South prospect turned up a ‘high-impact’ oil discovery, Statoil and partners announced 8 August 2011.

Well 16/2-8, in 112m water depths in PL 265, encountered a 65m oil column in Jurassic sandstone. Plans call for the Transocean Leader to continue drilling to a vertical depth of 2083m.

The Aldous Major South prospect is about 4km west of the Lundin Petroleum-operated Avaldnes discovery and 35km south of Statoil’s Grane field.

Preliminary estimates indicate that the field could contain 200-400 million boe with additional upside possible in the immediate area, Statoil said.

Tests indicated that the 16/2-8 discovery tapped into a structure that has communication with the Avaldnes find, where Statoil holds a 40% stake.

‘Aldous Major South is a considerable oil discovery in one of Statoil’s core areas. Together with the Avaldsnes discovery this may allow for a new stand-alone development in the North Sea,’ said Gro G. Haatvedt, Statoil’s senior VP for exploration on the Norwegian continental shelf.

The Transocean Leader will next drill the Aldous Major North well, Statoil said. The partners plan to drill two appraisal wells in PL 265 in 2012.

‘The result of the ongoing drilling of the Lundin-operated well (well 16/2-7) in the Avaldsnes structure will help further clarify the area’s potential,’ Statoil said.

Statoil operates license 265 with 40% interest. Partners are Petoro (30%), Det Norske Oljeselskap (20%) and Lundin (10%). 

Petrobras christens P-56

RIO DE JANEIRO, Brazil – On June 3, Petrobras christened the platform P-56, at the BrasFELS Shipyard, in Angra dos Reis (state of Rio de Janeiro). With capacity to process 100,000 b/d and to compress 6 MMcm/d of gas, the P-56 will operate in the Marlim Sul Field development Module 3, in the Campos basin, Rio de Janeiro.

A semisubmersible unit, the P-56 will be anchored at a depth of 1,670 m (5,479 ft) and interconnected to 21 wells, including 10 oil production wells and 11 water injectors. Identical to platform P-51, the new unit is part of the federal government’s Growth Acceleration Program (GAP) and is considered a milestone in the Brazilian naval industry, since it consolidates Brazil’s capacity to build platforms of this size. The new platform’s topside (integrated modules) attained a domestic content index of 72.9%, and the hull was built entirely in Brazil.


Petrobras and FSTP, a consortium set up by Keppel FELS and Technip, signed the construction agreement for the platform in October 2007. About $1.5 billion was invested in its construction, and the project created 4,000 direct and 12,000 indirect jobs in Brazil. Final construction operations on the platform will be completed in June and it will undergo the testing and final adjustment phases at the Ilha Grande Bay, in Angra dos Reis, and then be tugged to the Campos basin for anchoring and well interconnection. Production is slated to begin in the Marlim Sul Field in August.


The P-56′s modular construction comprises the deckbox and hull modules. Keppel FELS assembled the four process and utilities modules at the BrasFELS shipyard. The two power generation modules were built by Rolls Royce in association with UTC Engenharia at UTC’s site in Niterói. The two compression modules were built by Nouvo Pignone (General Electric) at the Porto Novo Rio site in Rio de Janeiro. The deckbox was also built at BrasFELS, where the modules were integrated. After integration, the assembled component is known as the topside.


The new platform’s hull is entirely Brazilian. It was built at the BrasFELS shipyard by joining the steel modules fabricated by the shipyard itself and by Nuclep, in Itaguaí. The highly complex process of joining the hull to the topside, called deck mating, was carried out smoothly in October 2010.

• Location: Marlim Sul field, 120 km (75 mi) off the coast

• Oil production: 100,000 b/d

• Gas compression: 6 MMcm/d

• Power generation: 100 MW

• Anchoring depth: 1,670 m (5,479 ft)

• Length 125 m width 110 m height 137 m

• Living quarters: 200 people

• Total weight: 54,658 tons

• Production wells: 10

• Injection wells: 11

• Risers: 79

• Oil offloading: pipeline to P-38 (approx. 20 km)

• Natural gas offloading, gas pipeline to P-51 (approx.15 km)