Study on Compatibility of Polymer Hydrodynamic Size and Pore Throat Size for Honggang Reservoir

Table 2

Viscosity and its loss rate in the produced liquid with 4 kinds.

Kg, mD	p1		p2		p3		p4
	Viscosity, mPa·s	Loss rate, %	Viscosity, mPa·s	Loss rate, %	Viscosity, mPa·s	Loss rate, %	Viscosity, mPa·s	Loss rate, %
300	12.36	4.31	21.13	5.95	41.95	8.26	51.94	31.12
180	11.96	7.45	20.27	9.77	33.23	27.32	34.89	53.73
75	11.77	9.16	13.76	38.77	22.85	50.03	21.48	71.51

The viscosities of the four kinds of polymer solution with 1500 mg/L concentration were 75.40 mPa·s, 45.73 mPa·s, 22.47 mPa·s, and 12.92 mPa·s in sequence before injection.