林湾油区清污混注水体结垢机理及 防治方法研究  

Research on mechanism of scale formation of mixed produced and fresh water for reservoir flooding and countermeasure in Linwan oil field

作　　者：张旭[1] 王旭[1] 贺斌 郝志莲 吴海[1] 谢志海[2] 张伟东[1] ZHANG Xu;WANG Xu;HE Bin;HAO Zhi-lian;WU Hai;XIE Zhi-hai;ZHANG Wei-dong(Jingbian Production Plant,Yanchang Oilfield Incorporated Company,Yulin 718500,China;College of Chemistry and Materials Science,Northwest University,Xi’an 710069,China)

机构地区：[1]延长油田股份有限公司靖边采油厂,陕西榆林718500 [2]西北大学化学与材料科学学院,陕西西安710069

出　　处：《应用化工》2022年第11期3137-3139,3146,共4页Applied Chemical Industry

基　　金：国家自然科学基金(21071115)。

摘　　要：林湾油区采用清污混注的注水开采方式,注水系统结垢严重,影响正常生产。分析油田注入水(清水、回注水)水质,进行了清水与回注水之间的结垢趋势预测;采用X-射线衍射法(XRD)对清污混注系统的水垢样品进行了分析研究。结果表明,清水与地层水之间不配伍,水垢以硫酸钡锶垢为主,混有少量的碳酸钙垢。详细探讨了影响油田注入水不配伍的机理,提出了预防方案。Sulfated scaling of oilfield injected water has a great adverse effect on production.Based on the water quality analysis results of injected water,the trend of sulphate and carbonate scaling may be deduced.The scaling samples of injected water system were analyzed by X-ray diffraction(XRD).The results show that there was incompatibility between clean water and formation water and the scale samples were mainly barium strontium sulfate scale,and mixed with a small amount of calcium carbonate scale.The factors affecting the incompatibility of injected water in oil field were discussed and the prevention scheme was put forward.

关 键 词：油田 注水系统 结垢预测 硫酸钡锶垢 预防 

分 类 号：TQ085.4[化学工程] TQ132.3