The existing problem about the viscosity of polymer is too high and it affects the oil recovery efficiency, so an issue is posed to reduce the viscosity of polymer. Lignin is used in tertiary oil recovery as a cheap surface active agent, it has a extensive expecting of using in oil field. We can have the conclusion that how lignin affects the viscosity of HPAM. The results showed that the lignin can reduce the viscosity of HPAM, and it will reduce faster if we put more lignin in HPAM . If we put the same quality of lignin in HPAM solution at different concentrations, the viscosity decrease rate of the mixed solution will be lower with the higher concentration of HPAM. The conclusion of the experiment showed that viscosity reducing effect: HCl﹥NaS2O8﹥NaClO.
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范振忠,周阳,韩飞,等. 木质素对聚丙烯酰胺降粘性能评价[J]. 科学技术与工程, 2010, (8): . FANZHENZHONG, ZHOUYANG, HANFEI, et al. Viscosity Reduction Capability of Lignin to Polyacrylamide[J]. Science Technology and Engineering,2010,(8).