聚/表二元体系配制用水水质优化研究

聚/表二元体系配制用水的水质对体系性能有明显的影响，目前国内对该方面研究较少。以聚丙烯酰胺
HTPW – 112（离子聚合物）和表面活性剂DWS – 3（非离子型）配制的聚/表二元体系为例，利用大量的室内实验，逐一评
价矿化度、铁离子含量以及细菌等水质指标对聚/表二元体系黏度的影响，为相似油藏的配聚用水水质优化方法提供
思路。实验表明，当Na+ 含量超过3 900 mg/L 时聚表二元体系黏度上升，对二元体系具有一定的盐增稠性能。单一
Mg2+、Ca2+ 含量大于500 mg/L 体系黏度下降趋势增强，且Mg2+ 的影响程度略强于Ca2+。Fe2+ 含量超过5 mg/L，二元
体系黏度开始大幅降低。SRB 超过5 个/mL、TGB 超过100 个/mL、FB 超过100 个/mL 会使聚表二元体系溶液黏度大
幅降低，细菌的代谢产物是造成黏度降低的重要因素。

A Study on Water Quality Optimization of the Polymer/ Surfactant System

Polymer/ surfactant flooding with water has a significant impact on the system performance，but has not been fully research
in China. In this paper，with the polyacrylamide HTPW – 112（ionic polymer）and surfactant DWS – 3（nonionic）preparation
of polymer/surfactant flooding for examples，we make a large number of laboratory experiments to evaluate the impact of water
quality indexes such as salinity，iron ion content and bacterial on the viscosity of the polymer/surfactant flooding，which provides
a new approach for the optimization method of the poly water in the similar reservoir. Experiments show that the viscosity
of polymer/ surfactant flooding increases when the sodium ion content is above 3 900 mg/L，and the system has certain salt
thickening performance. The downward trend of the system viscosity increases when single magnesium and single calcium ions
content are more than 500 mg/L. When SRB is than 5 per milliliter，TGB more than 100 per milliliter，and FB more than 100
per milliliter，the system viscosity will reduce greatly. Bacterial metabolites are one of the important factors causing viscosity
reduce.