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Testing times at Brazil's Sugarloaf play



By Gareth Chetwynd 

Petrobras has re-commenced a well test on a prospect called Bem-Te-Vi on the emerging pre-salt play in Brazil’s Santos basin after delays caused by adverse maritime conditions.

The Bem-Te-Vi prospect lies in Block BM-S-8, where Petrobras is partnered by Anglo-Dutch supermajor Shell and a unit of Portugal’s Galp Energia, and may form a contiguous part of a giant prospect that has been unofficially dubbed Sugarloaf.

The well, which is being drilled by the Noble-owned semi-submersible Paul Wolff, suffered mechanical problems in the early phase and was respudded late last year.

It reached total depth in April but testing was delayed due to rough seas, Franciso Nepomuceno, executive manager in the corporate division of Petrobras’ E&P division, told Upstream.

The Bem-Te-vi prospect appears to form a sub-structure on the flank of Sugarloaf, although the closures have not yet been defined. This is part of the same geological trend that includes the Carioca discovery in Block BM-S-9, and may include the Guara prospect, currently being drilled by Petrobras on another area of the block.

After concluding the well test on Bem-Te-Vi, the Paul Wolff will be move to a prospect called Yara.

Yara lies in Block BM-S-11, where Petrobras discovered the Tupi field, with estimated reserves between 5 billion and 8 billion barrels of oil equivalent.

“Yara is at the top end of the block and is a separate structure,” Nepomuceno said.

Petrobras is also restarting a drilling operation on the giant Jupiter prospect, located on Santos basin Block BM-S-24, in 2187 metres of water. Petrobras has already presented Jupiter as a gas and condensates find on the same dimensions as Tupi, even before concluding the discovery well.

The Diamond Offshore-owned drillship Ocean Clipper is set to resume drilling after a two-month pause for maintenance in the Maua shipyard in Niteroi, Rio de Janeiro. The well will proceed to a slightly deeper target 5252 metres below the sea bed, then carry out the tests.


Monday, 05 May, 2008, 13:59 GMT  | last updated: Monday, 05 May, 2008, 18:37 GMT

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