落地油泥热化学清洗研究

STUDY ON WASHING OIL SLUDGE BY THERMAL CHEMICAL METHOD

为实现油田落地油泥的资源化和无害化,针对西部某油田落地油泥开展了热化学清洗法试验研究。使用复配表面活性剂QXJ-1作为化学清洗剂,在室内开展了各种工艺参数对清洗效果的影响评价。结果表明,当化学清洗剂浓度3. 0 g/L,反应温度60℃,搅拌时间30 min,搅拌强度100 r/min,pH值为7,泥水比为1∶4时,油泥残油率最低,清洗效果最好。落地油泥经最佳工艺条件下处理后,残油率可降低到0. 4%,回收原油含水率为0. 5%。说明该热化学清洗法对落地油泥具有良好的清洗效果,研究结果可为油田落地油泥的高效回收处理提供参考。

In order to achieve the recycling and harmless treatment of oil sludge from the oil field,the experimental research on the thermal chemical cleaning method is carried out on the ground oil sludge of a certain oil field in the West.The compound surface active agent QXJ-1 was used as a chemical cleaning agent,and the effects of various process parameters on the cleaning effect were evaluated in the room.The results show that when the concentration of chemical cleaning agent is 3.0 g/L,the reaction temperature is 60℃,the stirring time is 30 min,the stirring strength is 100 r/min,the pH value is 7,the sludge oil ratio is 1∶4,the residual oil rate of sludge is the lowest,and the cleaning effect is the best.The residual oil rate of the ground oil sludge can be reduced to 0.4%and the water content of the recovered crude oil is 0.5%after treatment under the optimum conditions.It shows that the thermochemical cleaning method has good cleaning effect on the ground oil sludge,and provides a reference for the efficient recovery of oil sludge from the oil field.