Toson Uul is a producing conventional oil field located onshore Mongolia and is operated by PetroChina Daqing Tamsaq. The field is located in block Block XIX.

Field participation details

The field is owned by China National Petroleum.

Production from Toson Uul

The Toson Uul conventional oil field recovered 61.44% of its total recoverable reserves, with peak production in 2013. The peak production was approximately 13.51 thousand bpd of crude oil and condensate. Based on economic assumptions, production will continue until the field reaches its economic limit in 2046. The field currently accounts for approximately 48% of the country’s daily output.

Remaining recoverable reserves

The field is expected to recover 27.51 Mmboe, comprised of 27.51 Mmbbl of crude oil & condensate. Toson Uul conventional oil field reserves accounts 0.01% of total remaining reserves of producing conventional oil fields globally.


Information on the field is sourced from GlobalData’s fields database that provides detailed information on all producing, announced and planned oil and gas fields globally. Not all companies mentioned in the article may be currently existing due to their merger or acquisition or business closure.