Research Article

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

Table 2

Summary of sandpack flooding tests for different heavy oils.

Run no.Heavy oilPermeability (mD) Initial oil saturation (%)Chemical formulaEquilibrium IFT
  (mN/m)
Recovery (%)
Water floodingAlkaline floodingTotal

1Zhuangxi 57090.00.25% NaOH + 0.5% NaCl0.60029.022.951.9
2Zhuangxi 48882.40.5% NaOH + 0.5% NaCl0.06436.726.763.4
3Zhuangxi 57084.91% NaOH + 0.5% NaCl0.20023.129.752.8
4Zhuangxi 112083.70.25% NaOH + 0.5% NaCl0.60036.77.243.9
5Zhuangxi 98588.10.5% NaOH + 0.5% NaCl0.06437.512.449.9
6Zhuangxi 107584.51% NaOH + 0.5% NaCl0.20035.516.552.0
7Zhuangxi 187588.00.25% NaOH + 0.5% NaCl0.60039.45.645.0
8Zhuangxi 208087.40.5% NaOH + 0.5% NaCl0.06439.99.349.2
9Zhuangxi212589.51% NaOH + 0.5% NaCl0.20040.610.451.0
10Chenzhuang55885.10.25% NaOH + 0.5% NaCl0.12231.814.746.5
11Chenzhuang57782.60.5% NaOH + 0.5% NaCl0.09633.220.153.3
12Chenzhuang54386.31% NaOH + 0.5% NaCl0.18035.321.356.6
13Chenzhuang102584.40.25% NaOH + 0.5% NaCl0.12235.815.351.1
14Chenzhuang118085.70.5% NaOH + 0.5% NaCl0.09637.321.458.7
15Chenzhuang106584.21% NaOH + 0.5% NaCl0.18037.823.961.7
16Chenzhuang213589.10.25% NaOH + 0.5% NaCl0.12240.28.648.8
17Chenzhuang211086.10.5% NaOH + 0.5% NaCl0.09639.812.952.7
18Chenzhuang224088.51% NaOH + 0.5% NaCl0.18040.213.553.7