Silica Nanoparticles for the Stabilization of W/O Emulsions at HTHP Conditions for Unconventional Reserves Drilling Operations | Oil & Gas Science and Technology

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Table 2

Rheological properties of all samples prepared compared with the surfactant-stabilized OBM.

Samples	BP model τ = YS + PVγ		HB model τ = τ ₀ + Kγ ⁿ
Samples	PV [mPa s]	YS [Pa]	τ ₀ [Pa]	K	n
Surfactant-stabilized OBM	39.8	7.7	4	1.6	0.3
Surfactant-stabilized OBM	R ² = 0.972		R ² = 0.994
2 wt.% H20	12	3.3	3	0.03	0.82
2 wt.% H20	R ² = 0.969		R ² = 0.999
5 wt.% H17	17.1	1.6	1.2	0.05	0.76
5 wt.% H17	R ² = 0.987		R ² = 0.996
5 wt.% R104	18.5	3.3	2.7	0.08	0.76
5 wt.% R104	R ² = 0.992		R ² = 0.999
2 wt.% H20 + 2 wt.% ORS VIS	24.7	11.8	10.7	0.14	0.71
2 wt.% H20 + 2 wt.% ORS VIS	R ² = 0.977		R ² = 0.998
5 wt.% H17 + 2 wt.% ORS VIS	60.2	35.3	25.7	2.24	0.45
5 wt.% H17 + 2 wt.% ORS VIS	R ² = 0.968		R ² = 0.999
5 wt.% R104 + 2 wt.% ORS VIS	69.7	47	37.3	2.26	0.44
5 wt.% R104 + 2 wt.% ORS VIS	R ² = 0.978		R ² = 0.999

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