油田水系统管线电吸附防垢技术研究

发布时间：2018-03-25 00:01

本文选题：管道结垢　切入点：成分分析　出处：《东北石油大学》2016年硕士论文

【摘要】：目前,伴随着油田的高含水注水开发,大量介质成分复杂的污水使得处理站配套生产系统严重结垢、堵塞。研究油田水系统管道结垢原因并采用行之有效的防垢技术,对增加水处理效果、提高设备寿命及减少经济损失至关重要。1.本文首先对采集到的现场水样及垢样进行化验分析,寻求垢的主要组成,得出碳酸钙为该现场主要垢质成分的结论;再利用计算流体动力学(CFD)方法,通过FLUENT软件对成垢的影响因素进行数值模拟,重点研究了管道入口流速、温度以及离子浓度三种参数对结垢的影响,得到减少污垢沉积率的合理状态。2.基于研究结果,在保持入口流速和温度不变的情况下,采用减少离子浓度的方法设计了一套防垢装置。该装置基于新型的电吸附防垢技术,通过简易实验进行了电压参数、电极材料和极间距离的三方面优选,确定了电吸附模块的具体结构,并保证密封和绝缘性。制定了电吸附装置现场实验工艺,通过吸附前后的水质成分分析和挂片实验,进行了阻垢效果评价。结果表明,电吸附防垢装置可以明显降低设备结垢速率,延长设备清洗周期。油田水系统管线电吸附防垢技术研究,在解决油田现场的结垢问题上具有一定的实用价值。
[Abstract]:At present, with the development of high water-cut water injection in oil field, a large number of sewage with complex medium composition makes the supporting production system of the treatment station serious scaling and blockage. This paper studies the cause of scaling in the pipeline of oilfield water system and adopts effective scale prevention technology. It is very important to increase the effect of water treatment, to increase the life of equipment and to reduce the economic loss. It is concluded that calcium carbonate is the main fouling component in the field, and the influence factors of scale formation are numerically simulated by FLUENT software, and the inlet velocity of the pipeline is studied emphatically by using the computational fluid dynamics (CFD) method. The effect of temperature and ion concentration on fouling is obtained, and a reasonable state of reducing fouling deposition rate is obtained. 2. Based on the results of the study, while keeping the inlet velocity and temperature constant, An anti-scaling device was designed by reducing ion concentration. Based on a new type of electroadsorption scale prevention technology, three aspects of voltage parameters, electrode materials and distance between electrodes were selected through simple experiments. The specific structure of the electrosorption module is determined, and the sealing and insulation are guaranteed. The field experiment process of the electrosorption device is established, and the scale inhibition effect is evaluated through the analysis of the water quality composition before and after adsorption and the experiment of the hanging sheet. The results show that, The electric adsorption anti-scaling device can obviously reduce the scaling rate of the equipment and prolong the cleaning period of the equipment. The research on the technology of electric adsorption scale prevention for the pipeline of oil field water system has certain practical value in solving the scaling problem in the oil field.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TE93

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