Synthesis and Performance Evaluation of a New Deoiling Agent for Treatment of Waste Oil-Based Drilling Fluids

Table 3

Relationship between volume change of all phases and time of passing gas through when the deoiling agent switches from hydrophobicity to hydrophilicity.

Time of passing gas through (min)	Volume of hydrophilic layer (mL)	Volume of hydrophobic layer (mL)	Switched volume (mL)	Conversion rate (%)
0	10	10	0	0
2.5	12.6	7.4	2.6	26
5	15	5	5	50
7.5	17.4	2.6	7.4	74
10	20	0	10	100