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
CaCl
2
brine/mL
CaO/g
90:10
270
9
30
3
80:20
240
9
60
3
70:30
210
9
90
3