Experimental Study and Stabilization Mechanisms of Silica Nanoparticles Based Brine Mud with High Temperature Resistance for Horizontal Shale Gas Wells

Table 2

Rheological properties of BM with/without nanoparticles.

Formula	Temperature	PV (mPa·s)	YP (Pa)
BM-1	25°C	45	23
	120°C	67	31
	150°C	66	16.5
	180°C	63	17.5
BM-2	25°C	42	25
	120°C	57	32
	150°C	61	26
	180°C	51	23.5
NPBM-1	25°C	52	26
	120°C	66	32
	150°C	66	17
	180°C	76	22
NPBM-2	25°C	50	29
	120°C	67	32
	150°C	58	27
	180°C	47	20.5