The biodiesel-based flat-rheology drilling fluid system
JIANG Guancheng,SHI He,HE Yinbo
Table 5 Formulas of biodiesel-based emulsions with different oil-to-water ratios
Oil-water ratio Self-made biodiesel/mL Span80/g CaCl2 brine/mL CaO/g
90:10 270 9 30 3
80:20 240 9 60 3
70:30 210 9 90 3