Abstract

Basing on the structure, stratigraphic, depositional conditions and petroleum system the petroleum prospect, Song Hong northern basin, particularly, blocks A and B was evaluated. SIgnificantly high gas potential areas are Hong Ha, Sapa and Bach Long Bac structural sections. Predominantly oil potential is found in Hau Giang and Vam Co Dong structural areas. Low gas potential is found in Cay Quat and Ben Hai structural sections and low oil potential is found in Vam Co Tay, Chi Linh, Do Son and Tien Lang structural areas. The result of the calculation of a petroleum accumulattion capacity at the local, enhanced recoveral volume, risk parameters for stored gas and oil amount in blocks A and B are the oil potential in Kainozoi basement rock (KZ): oil accumulation volume at the local is 1722.9 million barrels (273.9 million cubic meters); oil recovery coefficient is 0.25 %; oil recoverable amount is 430.7 million barrels (68.5 million cubic meters). The gas potential in Miocene structural areas: gas accumulation volume at the local is 1620 BSCF (45.8 billion cubic meters); gas recoverable amount is 972 BSCF (27.5 billion cubic meters). The coefficient of success is quite low at 0.18 - 0.31 for gas and 0.08 – 0.23 for oil. Suggestion for the exploitation and exploration in further steps is to servey the 3D seismic in a 1500 square kilometer area and drill 2 wells for the exploration.