Research progress of the effect of metal cations on the viscosity of polyacrylamide solution
The effect of metal cations on the viscosity of partially hydrolyzed polyacrylamide solution( HPAM) are reviewed,the viscosity reduction of HPAM caused by metal cations with different valences are explained,and the technology of metal cations removal applied in oilfield produced water treatment are introduced. The present problems and the development prospect of the interaction between HPAM and metal cations are put forward.