Mongolia has 119 million tons of exploration petroleum reserve at present in Tamsag of Dornogobi aimag and in Matad of Dornod aimag where Petro China Dachin Tamsag LLC and Danshen Gazriin Tos LLC have been exploring for 12 years. The companies exploited 3.4 million barrels of petroleum and put MNT2 billion to the state budget.

Relating to stratum reserve of a drill, between 20 and 180 barrel petroleum has been exploited and MNT14 million is spent to lift up exploited oil. 780 tons of oil was exploited from a drill of in three hectares or 200 square meters area in Tamsag.

State rules indicate that petroleum reserve to be opened after Treasure fund registration of Mongolia.