HANOI (AFX) – State-owned PetroVietnam said it plans to conduct a geological survey with Russia’s Zarubezneft and Japan’s Idemitsu in the Cuu Long basin off Vietnam’s southern coast. The company said it was preparing to explore the 5,600 square kilometre Block 09-3 in the Cuu Long basin, 100 kilometres from the coastal city of Vung…