四川盆地震旦系和寒武系气藏中普遍发现具有较强荧光显示的有机物,通过岩心观察及氯仿溶解物的饱和烃色谱-质谱分析得出,这种有机物的正构烷烃具有明显的偶碳数优势,偶数碳位置均出现2个高峰值,奇偶优势指数(OEP)为0.29.分析认为,这种有机物是钻井液中加入的带有荧光材料的添加剂.随着实验仪器越来越精密,样品前处理的方法显得越来越重要,文中以磨溪32井龙王庙组岩心为例,介绍了一种简单有效的前处理方法.%Strongly fluorescent display was generally found in the Sinian-Cambrian gas reservoir,Sichuan Basin.Analyzing the core observation and saturated hydrocarbon by GC-MS,the even number alkane from soluble materials has obvious advantages,and there are two high peaks in even carbon positions and the OEP is 0.29.Therefore the fluorescence material is not the original material in the stratum but the pollutant from drilling fluid.With the precision development of experimental apparatus,the appropriate pre-treatment is becoming more and more important in the experiment.Taking Well Moxi 32 in Sichuan Basin as an example,a simple and effective pretreatment method is introduced.
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