采油污水回注可行性评价程序研究—以羊三木采油污水回注处理为例  

The assessment process study on the feasibility of produced-water reinjection—taking Yangsanmu for example

作　　者：屈撑囤[1] 鱼涛[1] 

机构地区：[1]西安石油大学陕西省环境污染控制技术与储层保护重点实验室,陕西西安710065

出　　处：《石油化工应用》2011年第12期73-76,共4页Petrochemical Industry Application

基　　金：国家十一五科技支撑计划项目;项目编号:2008BAC43B03

摘　　要：回注地层是采油污水的最优出路,为了确保处理后采油污水回注地层,采用粘土膨胀法、结垢量测定及垢型分析,结合岩心流动实验,进行污水处理后回注可行性评价程序研究,同时探讨残留于污水中的破乳剂、杀菌剂等对注入性的影响。结果表明:采用处理后污水与过滤污水混合稳定性评价→处理后水的粘土稳定性质评价→处理后水的结垢性质评价→处理后水的水敏性质评价→处理后水的水质注入性评价→注入水的水质指标确定的评价程序,可对处理后采油污水的回注可行性做出评价;同时,浓度分别为5～40 mg/L、5～80 mg/L的破乳剂、1227对岩心伤害率影响不大。The best treatment of produced-water is reinjection.So,the reinjective feasibility of the treated water was investigated by clay swelling method,amount and type of scale determent, core flow experiments and so on to ensure that the treated water reinjected in stratum in this study.Meanwhile,the effect of the rudimental demulsifier and fungicide on injectivity was discussed.The results showed that the process of mixed stability evaluation on treated and filtrated water→clay stability evaluation on treated water→scaling behavior evaluation on treated water→water sensitivity evaluation on treated water→water qualitative injectivity evaluation on treated water→water quality index decided evaluation on injected water could estimate the reinjective feasibility of treated oil extraction wastewater.Besides,the core flow rate was weakly affected by the demulsifier and fungicide（1227） with the concentration of 5～40 mg/L and 5～80 mg/L respectively.

关 键 词：采油污水 回注 结垢 岩心伤害 粘土膨胀 

分 类 号：TE357.61[石油与天然气工程—油气田开发工程]