Petrobras sees refinery upgrades by 2014-2015

LONDON Jun 23 (Reuters) - Petrobras , the Brazilian state-controlled oil company, said it expected to complete upgrades at a number of refineries by 2014 or 2015.

"The upgrade to reduce the sulphur, upgrade the refineries, not capacity only quality, probably we will complete in 2014 or 2015," the company's downstream director Paulo Roberto Costa told Reuters on the sidelines of a conference in London on Thursday.

Petrobras has said in the past it plans to undertake upgrades at three refineries in Brazil -- Duque de Caxias, Alberto Pasqualini and Gabriel Passos -- aimed at boosting the quality of the gasoline it produces. (Reporting by Sarah Young; Editing by David Holmes)