油气勘探荧光光谱法在土壤与其上方积雪的对比实验

摘要

Fluorescence spectrometry is commonly used to determine polycyclic aromatic hydrocarbon and evaluate the migration of oil and gas as well as the properties of base oil.Lying in western China , Xinjiang is almost covered with snow in winter.According to the geographical climatic environment in combination with the low detection limit and high sensitivity of fluorescence spectrometry, the authors analyzed the snow and the soil below it along a profile in a known oilfield in Xinjiang by means of fluorescence spectrometry.The results of two -dimensional fluorescence spectra, constant-wavelength synchronous fluorescence spectra and three-dimensional fluorescence spectra are compared with each other and discussed in detail.The comparison results shows that snow can quite effectively adsorb the polycyclic aromatic hydrocarbon and have an abnormal indication for the oil and gas reservoir.These findings can provide some reference for the exploration of oil and gas reservoirs in unknown geographical climatic environment areas in the future.%荧光光谱法是多环芳烃分析常用的方法,可以判定油气运移及地下原油属性.新疆位于我国西部,冬天积雪覆盖,根据它的地理气候环境,结合荧光光谱法的检测限低,灵敏度高等特点,在新疆某已知油区的一条剖面上,对积雪及其下方土壤进行荧光光谱法分析,主要从二维荧光光谱、固定波长同步荧光光谱、三维荧光光谱的分析结果进行对比,发现积雪对稠环芳烃存在较好的吸附作用,对地下油气藏也有较好的异常指示.