(34) EVALUATION OF RECOVERY PERFORMANCE OF MISCIBLE GAS DISPLACEMENT PROCESSES IN TIGHT OIL FORMATIONS
Tight oil reservoirs have become one of the main forces of oil reserves and production growth. Tight oil reservoirs are mostly developed by natural depletion. Only 5 % to 15 % of the oil can be recovered using natural deletion. Further improve of oil recovery of tight oil reservoir can be achieved by Appling miscible gas flooding process. This paper shows the feasibility of Appling miscible gas flooding as a method of enhancing oil recovery of tight oil reservoirs. The results of this compositional study show that the recovery factor of horizontal well with hydraulic fracture improved to about 30 % when the miscible gas displacement process was applied. Furthermore, the study shows the effect of the minimum miscible pressure (MMP) and the total gas injection volume on the gas flooding process.