新型驱油用聚合物溶液挂壁机理的研究

Study on Wall Build-up Mechanism of New Polymer Solution for EOR

对油田采出污水配制的新型驱油用改性聚丙烯酰胺溶液产生挂壁现象的原因进行了分析和研究,考察了模拟水中金属离子对此聚合物溶液挂壁及粘度的影响。结果表明,模拟水中二价金属离子与新型聚合物中功能基团上磺酸基间的作用是引起聚合物溶液挂壁的主要原因。

The wall build-up mechanisms of a modified polyacrylamide solution for EOR,prepared by simu- lative water,were analyzed.The effects of metal ion in the simulative water on the wall build-up phenome- non and viscosity of the polymer solution were investigated.The results showed that the wall build-up phe- nomenon of the solution was mainly induced by the interaction between the bivalent ions in the simulative water and the functional sulfonic groups of the new polymer.