Abstract: By improving the normalization method, introducing the factor weight coefficient, optimizing the distance power index and considering the factor interaction, the "general" distance is defined. Based on this, the inverse distance weighted (IDW) method is improved, by which a new potential prediction method for enhanced oil recovery (EOR) is established. Integrated with uniform design, the sample set of polymer flooding is obtained. The EOR of sample set is predicted and compared with IDW. The result indicates that with the improved IDW method, the "bovine eye" phenomenon of original IDW can be improved effectively, and the predicted EOR result is more precise and reliable.

Key words: EOR, potential, prediction, forecast, method