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对青化砭油田注水系统的长6地层水及注入水进行了水质分析，采用饱和指数和热力学溶解度法对结垢类型及趋势进行理论预测的基础上，并对混注水进行配伍性分析，运用化学分析、XRD、SEM等手段分析了典型结垢部位垢样，并提出了综合防垢措施。“,”The long-six formation water and the injected water from the water injection system of Qinghuabian Oilfield were analyzed in water quality. On the basic of predicting theoretically scaling types and trends by satura-tion index and thermodynamic solubility method, the compatibility analysis of mixed water injection was carried. The typical parts of scaling sample were analyzed by using chemical analysis, XRD and SEM. Finally the compre-hensive anti-scaling measures were put forward.