Operation experience obtained by production facilities of the Nagylengyel CO2 gas cap recovery

Nagylengyel Field is the second and largest oil field in Hungary. bearing formations can be found in Cretaceous limestones and Triassic do lomites. According to the developed karsttype reservoir model, oil reserves are located in caverns. Unrestricted influx is mainly provided by the water in the karst facies formations. During primary recovery operation, the produced oil oil contained only little dissolved gas if any.