colloidal metal
4.An HPAM/metal ion/phenolic resin colloidal dispersion gel(CDG) is outlined for its basic composion, formation conditions and performance properties; the features(injection pressure, volume, plug structure, and technologic aspects) of CDG flood design at well net J 145 of fault block MA 21, Hejian, central Hebei, are described and an analysis of the results of the pilot test on CDG flood at well net J 145 is given.

