摘要
研究了同位素示踪剂35S-KSCN在油田井间示踪测试中的分析方法并将其应用于矿场进行示范试验。条件实验结果显示,油田水溶液中的微量35S-KSCN在0.5～2.0 mol/L的HCl体系中与Zn2+配合可被磷酸三丁酯(TBP)定量萃取。用液体闪烁计数器测量35S产生的β射线,最小探测下限为0.02 Bq/L,该法回收率>90%,0.02～5 Bq/L线性良好,R2=0.999 5。通过矿场示范试验得到完整数据,验证了35S-KSCN示踪剂是一种稳定的水驱示踪剂;同时也表明了该法简便、快速,适用于油田井间示踪测试。
The isotope tracer ^35S-KSCN and its trace test in oil field were described. An extraction method for 1 000 mL ^35S-KSCN sample from oil field were investigaged. The experiment indicated that the microamount ^35S-KSCN could be extracted quantitatively with TBP at the range of 0.5-2.0 mol/L HCl. The activity of ^35S-KSCN was determined with a liquid scintillation counter, the minimum detectable limit was 0.02 Bq/L, the recovery rate of this method was more than 90%, the linearity relation from 0. 02 Bq/L to 5 Bq/L was good, R^2= 0. 999 5. The results showed that the tracer was a steady tracer in water flood reserves. This method is simple and rapid, and it can be used in the inter-well tracer test technology.
出处
《同位素》
CAS
2009年第2期106-109,共4页
Journal of Isotopes
