Owing to smelting vanadium-titanium magnetite ore,the amount of iron entrainment in slag as droplets is far higher than that in conventional BF slag.However,the iron droplets can be easily settled by blowing air into ...Owing to smelting vanadium-titanium magnetite ore,the amount of iron entrainment in slag as droplets is far higher than that in conventional BF slag.However,the iron droplets can be easily settled by blowing air into the molten slag.The results show that more than 80% of iron droplets in titania bearing slag can be settled and separated after treatment.The temperature rise of molten slag during the oxidizing process and the decreased viscosity caused by the component change of slag as well as air stirring in slag both accelerate the iron droplets settling.The vanadium content in the settled iron droplets and the original iron droplets was obtained by chemical analysis.The possible reason for the increased vanadium in the settled iron droplets was discussed by thermodynamic principles.展开更多
黏弹性表面活性剂（VES）自转向酸酸化技术具有配液简单、低伤害的优点,且能够有效的起到缓速、降滤失、自动转向的作用,是一种改造非均质储层的新技术。实验对用WDL-1阳离子表面活性剂配制的鲜酸和酸岩反应阶段的残酸黏度进行了评价。...黏弹性表面活性剂（VES）自转向酸酸化技术具有配液简单、低伤害的优点,且能够有效的起到缓速、降滤失、自动转向的作用,是一种改造非均质储层的新技术。实验对用WDL-1阳离子表面活性剂配制的鲜酸和酸岩反应阶段的残酸黏度进行了评价。研究发现,WDL-1鲜酸的表观黏度低于8 m Pa·s,易于酸液泵注;WDL-1盐酸体系在与碳酸盐岩反应的过程中,WDL-1酸液的表观黏度随酸岩反应的进行逐渐增大,90℃以下时,酸液的黏度随酸岩反应的进行呈线性增加;在温度为100℃~120℃条件下,酸液的黏度随酸岩反应的进行呈现近乎平稳的趋势,直至盐酸全部反应时酸液黏度才开始升高。WDL-1的加量对WDL-1酸液的表观黏度影响较大,加量越高,黏度越大,同时黏度随酸岩反应进行的变化值也越大。工程实践中,可以根据地层温度,适当调整WDL-1表面活性剂的用量,以满足成本控制的要求。WDL-1酸具有缓速低滤失、易转向等特点,8 wt%WDL-1酸可以满足高温深井的酸化、酸压的需求。展开更多
基金Item Sponsored by National Natural Science Foundation of China(50234040)
文摘Owing to smelting vanadium-titanium magnetite ore,the amount of iron entrainment in slag as droplets is far higher than that in conventional BF slag.However,the iron droplets can be easily settled by blowing air into the molten slag.The results show that more than 80% of iron droplets in titania bearing slag can be settled and separated after treatment.The temperature rise of molten slag during the oxidizing process and the decreased viscosity caused by the component change of slag as well as air stirring in slag both accelerate the iron droplets settling.The vanadium content in the settled iron droplets and the original iron droplets was obtained by chemical analysis.The possible reason for the increased vanadium in the settled iron droplets was discussed by thermodynamic principles.
文摘黏弹性表面活性剂（VES）自转向酸酸化技术具有配液简单、低伤害的优点,且能够有效的起到缓速、降滤失、自动转向的作用,是一种改造非均质储层的新技术。实验对用WDL-1阳离子表面活性剂配制的鲜酸和酸岩反应阶段的残酸黏度进行了评价。研究发现,WDL-1鲜酸的表观黏度低于8 m Pa·s,易于酸液泵注;WDL-1盐酸体系在与碳酸盐岩反应的过程中,WDL-1酸液的表观黏度随酸岩反应的进行逐渐增大,90℃以下时,酸液的黏度随酸岩反应的进行呈线性增加;在温度为100℃~120℃条件下,酸液的黏度随酸岩反应的进行呈现近乎平稳的趋势,直至盐酸全部反应时酸液黏度才开始升高。WDL-1的加量对WDL-1酸液的表观黏度影响较大,加量越高,黏度越大,同时黏度随酸岩反应进行的变化值也越大。工程实践中,可以根据地层温度,适当调整WDL-1表面活性剂的用量,以满足成本控制的要求。WDL-1酸具有缓速低滤失、易转向等特点,8 wt%WDL-1酸可以满足高温深井的酸化、酸压的需求。
