Systematical Studies of Mechanisms of Multi-thermal Fluid Stimulation for Heavy Oil Recovery

Tianlin Zhang


This presentation shows that the MTFS process used in the NB35-2S heavy oil reservoir has the better performance of cumulaRve oil compared with the CSS process;  The cumulaRve oil increases 35% because the reservoir physical parameters and fluid physical properRes in the mulR-thermal fluids displacement development influence the oil recovery; The best bottom hole pressure is 3000 kPa; The best steam injecRon amount in the first cycle is 4400 cubic meters; The best steam injection temperature is 220 degree Celsius; The best gas-steam raRo is 0.9.