Field DevelopmentEni targets platform upgrade in revised tender for huge Libya projectPlatform upgrade needed as part of huge Structures A&E projectOffshore work: Eni chief executive Claudio Descalzi (left) shakes hands with Farhat Bengdara, head of NOC, Libya’s state oil company, earlier this year.Photo: REUTERS/SCANPIXIain EsauSenior reporterLondon