延长油田永宁采油厂双河西区回注水腐蚀结垢控制研究  

Research on Control Methods of Reinjection Water Induced Corrosion and Scaling for Water Injection System at Shuanghe West District of Yongning Oil Production Plant in Yanchang Oilfield

作　　者：李国明 贠玉平 王亚雄 安思彤[3] 唐组友 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]延长油田股份公司研究中心,陕西延安716000 [3]中原油田采油工程技术研究院,河南濮阳457001

出　　处：《石油工程建设》2013年第6期50-53,9-10,共4页Petroleum Engineering Construction

摘　　要：延长油田永宁采油厂双河西区注水系统腐蚀结垢严重,动态条件下的腐蚀速率大于0.254 mm/a。文章通过试验研究了腐蚀结垢的影响因素、影响规律及控制方法,指出导致管道、井筒腐蚀结垢的主要原因是回注水中的溶解氧、细菌以及成垢阴阳离子超标;通过投加pH值调节剂、除氧剂、杀菌剂以及缓蚀阻垢剂,可使回注水对碳钢的腐蚀速率降至0.030 4 mm/a,满足回注要求。The water injection system at Shuanghe West District has severe corrosion and scaling problems, in which the dynamic corrosion rate induced by reinjection water is greater than 0.254 mm/a. The influence factors, influence rules and control methods of corrosion and scaling are experimentally investigated. The main reason of the well corrosion and scaling is due to superstandard of dissolved oxygen, bacterial and scaling zwitterion. By adding pH regulator, deoxidant, bactericide, corrosion and scaling inhibitor to the reinjection water, the corrosion rate is reduced to 0.030 4 mm/a, that reaches the reinjection standard requirement.

关 键 词：回注水 腐蚀 结垢 控制方法 

分 类 号：TE983[石油与天然气工程—石油机械设备]