Brazilian state-run energy company Petroleo Brasileiro (PBR, PETR4.BR), or Petrobas, said Monday it has received two bids for a contract to build 21 offshore drill rigs that will help the company develop recently discovered offshore, said Monday it has received two bids for a contract to build 21 offshore drill rigs that will help the company develop recently discovered offshore, said Monday it has received two bids for a contract to build 21 offshore drill rigs that will help the company develop recently discovered offshore, said Monday it has received two bids for a contract to build 21 offshore drill rigs that will help the company develop recently discovered offshore, said Monday it has received two bids for a contract to build 21 offshore drill rigs that will help the company develop recently discovered offshore