Table 2.

General properties of drilling fluid systems.

Conditions	Density/ g/cm3	T/°C	AV/ mPa·s	PV/ mPa·s	YP/ Pa	θ6/θ3	FLAPI/ mL	FLHTHP/ mL
Before ageing	1.5	4	33	24	9	7/6	4	-
		25	27	20	8	6/5
		50	24	15	9	8/7
After 180 °C/16 h ageing	1.5	4	61	48	13	14/10	8	18.8
		25	58	46	12	11/10
		50	36	28	8	10/9