孤东油砂共驱体系的碱耗

CAUSTIC CONSUMPTION OF CAUSTIC/SURFACTANT COFLOODING SYSTEMS ON GUDONG RESERVOIR SAND

本文采用静态实验方法,讨论了反应时间、矿物、碱浓度、表面活性剂及固液比对孤东油砂静态碱耗的影响,并给出了描述孤东油砂碱耗的定量模型。结果表明,用引入固液比影响参数后的 K-B 模型采描述孤东油砂的静态碱耗,能得到良好的线性关系。固液比对不同矿物的碱耗影响,可用固液比影响参数来描述。加入配伍性良好的表面活性剂可在一定程度上减小碱耗量。

The effects on caustic consumption of caustic/surfactant cofloodlng systems on Gudong reservoir sand,montmorillonite,and quartz under static experimental conditions are investi- gated in relation to caustic concentration,reaction time,surfactant added,and solid-to- liquid ratio.The results obtained are simulated on a computer by various kinetic models. A good linear relationship is observed in description of the caustic consumption on Gudong reservoir sand by using K-B model with a parameter introduced which characterizes the influence of solid-to-liquid ratio on caustic consumption on minerals of different kind.A fully compatible surfactant in the coflooding systems decreases the caustic consumption in certain extent.