含聚采出液油水分离及电脱水特性研究

发布时间：2018-06-01 15:20

  本文选题：含聚采出液 + 乳状液　； 参考：《东北石油大学》2015年硕士论文

【摘要】：目前,油田已经进入到三次采油阶段,聚合物驱油已经在油田上得到了广发的应用,但是,在聚驱采出液中原油含水量特别高,能够达到90%以上,在三次采油过程中,为了达到增产的目的,会加注各种化学试剂(聚合物、表面活性剂等),这样就会使采出液形成乳化程度很高的油水乳状液,使得油水分离困难,油水乳状液的存在直接影响到油品的性能,因此,如何找到一种有效、快速处理油田采出液的方法,成为目前迫在眉睫需要解决的问题。本文以含聚合物采出液作为研究对象,分析采出液的油水分离过程,考察油水分离过程特性并优化条件参数,通过测定油水分离后的油中水含量以及水中油含量,分析比较从而确定最优工艺条件;同时分析电脱水处理采出液的过程,确定电脱水过程中的最优的工艺条件,并测定不同聚合物浓度采出液击穿场强的变化规律,同时对脱水前后的油品性能进行分析比较。分析讨论电脱水过程的脱水机理,为油田的实际操作以及工艺优化提供理论依据。研究结果表明,油水分离过程中最佳的温度为40℃,最佳的破乳剂投加量为20mg/L,最佳的处理时间为40min;电脱水过程中,最佳的处理温度为50℃,最佳的破乳剂投加量为20mg/L,最佳的处理时间为70min;电脱水能够有效的改善油品的性能,并且高聚合物含量的采出液不利于进行油水分离,并且容易出现击穿场强的情况,电脱水过程就是在电场力和化学试剂共同作用下,破坏油水界面膜强度,改变油水界面张力,使油水乳状液分离,水滴凝结沉降脱离的过程。
[Abstract]:At present, the oil field has entered the stage of tertiary oil recovery, and polymer flooding has been widely used in the oilfield. However, the water content of crude oil in the produced fluid of polymer flooding is very high, which can reach more than 90%. In order to achieve the purpose of increasing production, a variety of chemical reagents (such as polymers, surfactants, etc.) will be added, which will result in the formation of oil-water emulsion with a high degree of emulsification, which will make it difficult to separate oil from water. The existence of oil-water emulsion has a direct impact on the performance of oil products. Therefore, how to find an effective and rapid treatment of oil field produced liquid has become an urgent problem to be solved. In this paper, the oil / water separation process of polymer produced liquid is analyzed, the characteristics of oil / water separation process are investigated and the condition parameters are optimized. The oil water content and water oil content after oil water separation are determined. The optimum technological conditions are determined by analyzing and comparing, and the process of electric dehydration is analyzed to determine the optimum process conditions in the process of electric dehydration, and the law of the breakdown field strength of the extracted liquid with different polymer concentrations is determined. At the same time, the performance of oil before and after dehydration was analyzed and compared. The dewatering mechanism of electric dehydration process is analyzed and discussed, which provides a theoretical basis for the practical operation and process optimization of oil fields. The results show that the optimum temperature is 40 鈩，

本文编号：1964651