Esgian reports that drilling contracts have been announced this week for operations in Brazil and the Philippines, and new discoveries have been confirmed in the UK and Namibia in its Week 11 Rig Analytics Market Roundup.ContractsCOSL Drilling has emerged as the winner for Petrobras' moored semisubmersible tender with the 4,600-ft Nanhai 8 (also known as Nan Hai Ba Hao).