22.1 million tonnes (~ 25.71×10^6 m3 or 161.7 million bbl)
The Tasbulat Oil Field is an oil field located in Mangystau Province. It was discovered in 1997 and developed by Petrom. The oil field is operated and owned by Petrom. The total proven reserves of the Tasbulat oil field are around 161.7 million barrels (22.1×106tonnes), and production is centered on 4,000 barrels per day (640 m3/d).[1]