针对塔河油田油层高温高盐条件（地层水矿化度为2.4×10⁵ mg/L、温度为140℃），研制了三次采油用耐温耐盐型弱凝胶驱油剂SDQ-1。并对体系的耐温抗盐和驱替等性能进行了评价。结果表明，弱凝胶驱油剂SDQ-1具有良好的热稳定性及耐盐性，在地层水条件下，其黏度保留率可达81.8%。可视化驱替评价装置研究表明，采用SDQ-1体系能够明显降低水驱时的指进现象，且随着黏度的增大，采收率效果提高。

Given the high temperature and high salt conditions in Tahe Oilfield,in which the reservoir temperature is at 140℃ and formation water salinity is 2.4×10⁵ mg·L^-1,SDQ-1,a temperature- and salt-resistant weak gel displacement agent,is developed for tertiary oil recovery.The temperature resistance,salt resistance and displacement performance of SDQ-1 system are evaluated.The results indicate that SDQ-1 has good thermal stability and salt tolerance,and its viscosity retention rate can reach 81.8% under the condition of formation water in Tahe Oilfield.Study on visual displacement evaluation device shows that SDQ-1 system can significantly reduce the finger-advance phenomenon during water flooding,and the effect of recovery efficiency is improved with the increase of viscosity.

赵清(1992-),女,硕士研究生,研究方向为油田化学,15999110178@163.com