Dai Hung oilfield (Mỏ Đại Hùng in Vietnamese) is an oil field in the block 05.1 belong to northwest of Nam Con Son Basin, Vietnamese offshore, South China Sea. This field is discovered in 1988, estimated the reserve of petroleum about 354.6 million barrels (56.38×10^ m) oil; 8.482 trillion cubic metres (2.995×10 cubic feet) of natural gas and 1.48 million barrels (235×10^ m) condensate with the probability of 50%.