同位素示踪剂35S-KSCN分析方法的建立及其油田矿场应用试验

摘要：本文主要介绍了同位素示踪剂35S-KSCN在油田井间示踪测试中的分析方法和矿场示范试验，研究了1000ml油田水样中示踪剂35S-KSCN的测定方法。通过条件实验，可知油田水溶液中的微量35S-KSCN在0.5-2mol/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，最小探测限为0.02Bq/L，方法回收率90%以上，从0.02 Bq/L到5Bq/L线性良好。35S-KSCN示踪剂通过在矿场的示范试验，得到数据完整，验证了这种示踪剂是理想的水驱示踪剂；同时也表明了该法简便，快速，灵敏度高，适用于油田井间示踪测试技术。

Establish Analysis Method for Isotope Tracer 35S-KSCN and Its Test In Oil Field

Abstract This paper describes an analysis method for isotope tracer 35S-KSCN and its test in oil field, Investigated an extraction method for 1L 35S-KSCN sample from oil field. Through condition experiment, the sample from oil field including minim 35S-KSCN could be extracted quantitatively at the range of acidity of 0.5-2.0mol/L HCl with TBP. 35S-KSCN was determined with a liquid scintillation counter, the minimum detectable limit for 35S-KSCN is 0.02Bq/L, the chemical recovery of this method is above 90%., the linearity relation is good from 0.02Bq/L to 5Bq/L. Through the test in oil field, get ideal data, validate this tracer is ideal tracer in waterflood reserves, at same time it show this method is quite sensitive, simple and prompt. It can be used for inter well tracer test technology.