Insights into Enhanced Oil Recovery by Polymer-Viscosity Reducing Surfactant Combination Flooding in Conventional Heavy Oil Reservoir

Table 4

The incremental oil recovery results at different flooding stages for micromodel flooding.

Chemical slug	Water flooding recovery (%)	Chemical flooding recovery (%)	Incremental oil recovery/%
P	35.31	50.67	15.36
P+D1	35.66	52.89	17.23
P+A1	36.46	58.29	21.83