Table 1. COPPs of 16 Crude Oils.

crude oils	#1	#2	#3	#4	#5	#6	#7	#8
density at 20 °C (kg/m3)	856.8	868.5	891.9	882.1	889.9	879.2	870.4	861.7
pour point (°C)	12	8	–5	13	26	6	34	20
viscosity at 40 °C (mPa·s)	32.20	23.60	173.50	76.00	176.00	12.52	72.50	15.05
saturates (wt %)	39.76	44.58	33.92	46.43	44.66	34.27	50.60	47.35
aromatics (wt %)	47.55	46.61	40.49	37.22	31.26	56.08	38.30	43.22
resins (wt %)	2.94	6.03	10.11	7.00	11.84	6.51	2.78	5.75
asphaltenes (wt %)	9.75	2.78	15.48	9.34	12.25	3.13	8.32	3.67
waxes (wt %)	3.84	8.86	2.55	5.94	11.19	2.73	10.06	5.25
mechanical impurities (wt %)	0.53	0.21	0.65	0.42	0.39	0.15	0.31	0.19
surfactants (wt %)	17.06	17.88	28.79	22.70	35.67	12.52	21.47	14.86
acid number (mg KOH/g)	0.45	0.38	0.56	0.49	0.62	0.25	0.27	0.29
PIPs of COEs	0.65	0.67	0.68	0.70	0.68	0.60	0.70	0.62

crude oils	#9	#10	#11	#12	#13	#14	#15	#16
density at 20 °C (kg/m3)	859.7	842.2	892.8	853.9	850.9	883.1	858.7	870.2
pour point (°C)	5	15	23	35	3	11	9	37
viscosity at 40 °C (mPa·s)	12.45	9.00	128.00	29.50	10.25	37.00	9.72	220.80
saturates (wt %)	38.09	41.30	45.83	55.96	39.34	48.12	35.14	63.42
aromatics (wt %)	51.45	52.92	35.39	37.50	54.35	43.60	59.34	23.72
resins (wt %)	6.41	3.54	13.44	4.55	2.31	0.87	1.33	5.49
asphaltenes (wt %)	4.05	2.24	5.33	1.99	4.00	7.41	4.19	7.37
waxes (wt %)	3.05	4.96	7.93	14.15	2.71	7.69	1.71	20.67
mechanical impurities (wt %)	0.14	0.08	0.36	0.11	0.47	0.35	0.27	0.55
surfactants (wt %)	13.65	10.82	27.06	20.80	9.49	16.32	7.50	34.08
acid number (mg KOH/g)	0.17	0.24	0.41	0.31	0.15	0.23	0.28	0.34
PIPs of COEs	0.60	0.60	0.72	0.70	0.60	0.65	0.55	0.70