Experimental investigation on stable displacement mechanism and oil recovery enhancement of oxygen-reduced air assisted gravity drainage

CHEN Xiaolong,LI Yiqiang,LIAO Guangzhi,ZHANG Chengming,XU Shanzhi,QI Huan,TANG Xiang

Table 3 Ionic composition of experimental water.

Ionic composition Concentration/ (mg?L-1) Ionic composition Concentration/ (mg?L-1) Na+ and K+ 533.83 SO42- 4.51 Mg2+ 27.94 HCO3- 1 525.50 Cl- 167.77