Study on Viscosity Reducer Flooding Technology for Deep Low Permeability Extra Heavy Oil Reservoirs

Table 3

Table of oil production performance.

Core number	Original oil saturation	Waterflooding recovery	Mass fraction of viscosity reducer	Viscosity reducer flooding recovery	Ultimate recovery
	%	%	%	%	%
3	71.4	33.5	1.0	10.6	44.1
4	73.6	34.2	3.0	12.4	46.6
5	74.4	34.9	5.0	13.2	48.1
6	73.2	35.8	6.0	13.9	49.7