Influence of Oil Viscosity on Alkaline Flooding for Enhanced Heavy Oil Recovery

Table 1

Basic properties of four types of heavy oil.

Heavy oil	Density at 50°C (g/cm^3)	Viscosity at 50°C (mPa⋅s)	Acid number; (mg KOH per g sample)
Zhuangxi	0.9302	390	1.85
Chenzhuang	0.9778	3450	2.02
Binnan	0.9632	2500	3.85
Xia-8	0.9712	3950	4.66