Nuclear magnetic resonance experiments on foam flooding and evaluation of foam dynamic stability

Jingnan ZHANG,Qinfeng DI,Shuai HUA,Feng YE,Yuan LI,Wenchang WANG

Table 3 Oil displacement efficiency of foam flooding experiments.

Core No. Oil saturation/% Oil displacement efficiency after water flooding/% Oil displacement efficiency after foam flooding/% 1# 67.16 50.80 2# 66.67 55.80 3# 63.15 45.67 63.72 4# 62.87 41.82 67.50