ABSTRACT
At present, indoor experiment and pilot test re-
search, which were done by experts at home and
abroad (Wang et al. 2000, Setight 1983, Blunt &
Christi 1991, Yang et al. 2003) show that polymer
flooding is an effective method to improve the oil
recovery. High concentration polymer flooding is
the way that could further enhance oil recovery after
conventional polymer flooding, and whose indoor
simulation experiments have been developed inces-
santly. Wang et al. (2000) and Xia et al. (2001) pro-
posed that the higher polymer concentration will re-
sult in higher recovery, and smaller amount of
produced liquid need to be treated, and the economic
benefit will be larger.
