马岭油田南二区注水站采出水处理工艺前期配套研究

发布时间：2018-04-17 16:25

本文选题：腐蚀 + 结垢　；参考：《西安石油大学》2015年硕士论文

【摘要】：通过对南二区采出水水质进行分析,对腐蚀、结垢机理进行研究,引用灰关联分析理论,确定了南二区采出水防腐防垢措施;通过南二区不同水质开展水敏、速敏和岩心伤害试验,确定了适合于区块的回注标准;结合南二注地面工艺现状,采用中试试验,现场进行加药及流程优化,最终确定适合区块的综合处理工艺。适当调整采出水的PH。降低采出水中Ca2+浓度。降低铁离子的含量。通过絮凝作用吸附生成的CaCO3,降低采出水中的机杂含量。在采出水中投加除铁药剂、杀菌剂和调整采出水的PH值,减少HCO3-、Fe3+、S2-含量,减少采出水中细菌的含量等措施。综合配套应用防腐蚀材料,提高管网、设施的抗腐蚀能力,降低后期维护成本,实现油田的效益开发。
[Abstract]:Through the analysis of the water quality, the mechanism of corrosion and scaling, and the theory of grey correlation analysis, the antiseptic and scale prevention measures are determined, and the water sensitivity is carried out through different water quality in Naner District.The speed sensitivity and core damage test determined the injection standard suitable for the block, combined with the present situation of the South II injection surface technology, the pilot-scale test was adopted, and the field dosing and process optimization were carried out, finally the comprehensive treatment process suitable for the block was determined.The PHs of produced water should be adjusted properly.The concentration of Ca2 in extraction water was reduced.Reduce the content of iron ion.By flocculation adsorption of CaCO3, the content of mechanical impurities in the water was reduced.Some measures such as adding iron-removing agent, fungicides, adjusting PH value of effluent, reducing the content of HCO _ 3-Fe _ 3H _ 2- and reducing the content of bacteria in the produced water were carried out.Comprehensive application of anticorrosive materials to improve the corrosion resistance of pipe networks and facilities, reduce the later maintenance costs, and achieve the benefit of oilfield development.
【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

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