Enhanced recovery for selected components of a highly volatile oil

摘要

The Tisza-1 reservoir is located in the uppermost formation of Algyo oilfield the largest hydrocarbon field of Hungary. The oil of this reservoir has extreme characteristics: Boi=3.94 m3/m3 Rsi=711 m3/m3 at the initial pressure of 169 bars and temperature 92 degree. The specific gravity of the crude is 0.728 t/m3 (63 API). It is caused by the high amount of intermediate components: the C3-C6 content is about 34 mol