Modeling of Partially Hydrolyzed Polyacrylamide-Hexamine-Hydroquinone Gel System Used for Profile Modification Jobs in the Oil Field

Table 3

Experimental values of gelation time at different polymer concentration, temperature and pH 7.5 (Constant crosslinker concentration HMTA/HQ 0.4/0.4 wt%).

Sl. No.	Polymer	Crosslinkers		Experimental values of gelation time; (hrs.)	Theoretical values of gelation time; (hrs.)	Temperature; (°C)
	PHPA; (wt%)	HMTA; (wt%)	HQ; (wt%)
1	0.8	0.4	0.4	331	411.5734	80
2	0.9	0.4	0.4	243	223.2606
3	1.0	0.4	0.4	140	129.1795
4	1.1	0.4	0.4	77	78.7483
5	0.8	0.4	0.4	226	205.1856	90
6	0.9	0.4	0.4	105	111.3043
7	1.0	0.4	0.4	71	64.4011
8	1.1	0.4	0.4	37.3	39.2591
9	0.8	0.4	0.4	115	106.1816	100
10	0.9	0.4	0.4	61	57.5989
11	1.0	0.4	0.4	37	33.3269
12	1.1	0.4	0.4	23	20.3162
13	0.8	0.4	0.4	56	56.8703	110
14	0.9	0.4	0.4	30	30.8496
15	1.0	0.4	0.4	17	17.8497
16	1.1	0.4	0.4	10	10.8812
17	0.8	0.4	0.4	36	31.4424	120
18	0.9	0.4	0.4	17	17.0561
19	1.0	0.4	0.4	9	9.8687
20	1.1	0.4	0.4	7	6.016