靖边油田采油污水回注处理工艺技术研究

发布时间：2018-06-05 15:03

本文选题：污水回注 + 配伍　；参考：《西安石油大学》2015年硕士论文

【摘要】：随着油田的持续开发和注水范围的扩大,油田综合含水不断上升,采油污水已成为阻碍油田发展的一大问题。采油污水回注是提高油田开发效益和油井产量、降低开发成本的最有效方法之一,但在注水开发过程中,除要求回注水中的悬浮固体颗粒、乳化油、细菌和腐蚀结垢产物不堵塞储层孔隙、喉道外,还要求注入水与储层岩石及储层流体相配伍,即注入水在储层不会产生水敏、盐敏、乳化、结垢等各种损害,并能进行有效地杀菌和防腐阻垢处理、确保净化水具有很好的稳定性。本文通过大量的实验,对靖边油田腐蚀、结垢比较严重的十号联合站进行了深入的研究,分析了靖边油田采油污水的组成性质特点和变化规律,污水腐蚀、结垢和细菌生长繁殖及回注水水质不达标的原因及影响因素,筛选评价了各种水处理药剂及配方,提出了强化前端处理、简化后端过滤环节的处理工艺和大体积污水罐均质和沉降分离→气浮(絮凝)→过滤的处理方法。
[Abstract]:With the continuous development of oil field and the expansion of water injection scope, the comprehensive water cut of oil field is rising continuously, and the oil recovery sewage has become a major problem that hinders the development of oil field. Oil recovery wastewater re-injection is one of the most effective methods to improve oilfield development efficiency, oil well production and reduce development cost. However, in the process of water injection development, the suspended solid particles and emulsified oil are required in the process of water injection. Bacteria and corrosion scaling products do not block the pores of the reservoir. In addition to the throat, it is also required that the injected water be compatible with the reservoir rocks and reservoir fluids, that is, the injected water will not cause any damage in the reservoir such as water sensitivity, salt sensitivity, emulsification, scaling, etc. It can effectively sterilize and prevent corrosion and scale to ensure good stability of purified water. In this paper, through a large number of experiments, the No. 10 joint station with serious corrosion and scaling in Jingbian Oilfield has been deeply studied, and the characteristics of composition and variation of the oil recovery sewage in Jingbian Oilfield have been analyzed, and the sewage corrosion has also been analyzed. The causes and influencing factors of scaling, bacterial growth and reproduction and water quality substandard were analyzed, and various kinds of water treatment agents and formulations were screened and evaluated, and the strengthening of front-end treatment was put forward. It simplifies the treatment technology of back-end filtration and the treatment of mass sewage tank homogenization and settling separation air floatation (flocculation) filtration.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357.6;X741

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