Table 3. Gel-Breaking Results of Crosslinked P3A Fluids at 100 °C.

	0.1 wt % APS			0.2 wt % APS
CZr (wt %)	ηf (mPa·s)	residues (mg/L)	tb (min)	ηf (mPa·s)	residues (mg/L)	tb (min)
0.8 wt % P3A
0.2	2.17	283	90	3.22	140	60
0.3	3.23	158	90	3.18	120	60
0.6 wt % P3A
0.2	4.31	55	120	3.44	60	90
0.3	4.96	175	120	4.12	202	90