原油中6种油溶性示踪剂的气质联用检测方法研究

Study on the detection method of 6 oil-soluble tracers in crude oil by GC-MS

采用气质联用法筛选出6种油溶性示踪剂,并建立了这6种油溶性示踪剂的标准曲线,在浓度范围10~1000μg/L内,其线性关系良好,相关系数R^(2)>0.997,最低检测限<1.0μg/L,方法回收率>98%。经室内高温静态吸附性评价实验研究,除OT-6外,其余5种油溶性示踪剂在150℃、岩心存在条件下,30d的浓度保留率>97%,显示出良好的耐高温性能和抗吸附性能,后续可作为压裂监测用示踪剂使用。

In this paper,six oil soluble tracers were selected by GC-MS,and the related detection methods were established.Finally,the standard curves of six oil-soluble tracers were established.In the concentration range of 10~1000μg/L,the linear relationship was good,the correlation coefficient R^(2)>0.997,the minimum detection limit<1.0μg/L,and the method recovery rate>98%.According to the indoor high-temperature static adsorption evaluation experiments,except for OT-6,the remaining 5 oil-soluble tracers have a concentration retention rate of>97%for 30 d at 150℃and the presence of cores,showing good high temperature resistance and anti-adsorption performance,then can be used as a tracer for fracturing monitoring.