摘要:针对目前海上油田聚合物驱入井液黏度损失问题,分析了聚合物溶液黏度损失的原因,重点研究了Fe^2+浓度对聚合物流变性能的影响。通过室内实验分别考察了溶液中不同Fe^2+浓度对聚合物的特性黏数、黏弹性和拉伸流变性的影响规律。实验结果表明:当Fe^2+浓度小于0.5mg/L时,随着Fe^2+浓度增大,聚合物的特性黏数、表观黏度和拉伸黏度呈迅速下降趋势;当Fe^2+浓度大于0.5mg/L时,降解不明显。控制注入水中Fe^2+浓度低于0.5mg/L,可以有效消除Fe^2+对聚合物入井液黏度的不利影响。
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