莫尔滴定法测定油田水中氯离子含量测量结果不确定度评定

Evaluation of Uncertainty of Measurement Results of Chlorine Ion Content in Oilfield Water by Mohr Titration Method

由于油田水离子含量中氯离子占有比例较大,测试油气田生产过程中油田水氯离子,能够很好的监测油气田生产动态。本文对莫尔滴定法测定油田水中氯离子不确定度进行分析,分析影响氯离子含量的不确定度来源,建立相应的数学模型,计算不确定度分量及合成不确定度,得出莫尔滴定法测定油田水中氯离子含量的相对扩展不确定度U。

Due to the large proportion of chloride ion in oilfield water ion content,testing the chloride ion in oilfield water during the production process of oil and gas field can well monitor the production performance of oil and gas field.The uncertainty of determination of chloride ion in oilfield water by Mohr titration was analyzed,and the source of uncertainty affecting chloride ion content was analyzed,the corresponding mathematical model was established,the uncertainty component and synthesis uncertainty were calculated,and the relative expanded uncertainty U of determination of chloride ion in oilfield water by Mohr titration was obtained.