Petrovietnam Exploration & Production (PVEP) is still searching for a strategic partner for four offshore exploration blocks in the Song Hong basin off the country’s north-east coast.

The upstream subsidiary of national oil company PetroVietnam said last month it was providing “investment opportunities” for companies wishing to come on board Blocks 102/10, 106/10, 103 and 107. PVEP holds 100% stakes in all four permits, which Vietnam sources said are understood to surround one producing field and one field under development.