荧光分析法在综合录井中的应用

在分析取自全国各大油气田不同类型油气样品的基础上 ,提出了各种油气的三维荧光光谱特征。天然气或凝析气的特征峰出现于Ex2 68nm/Em32 2nm处 ,凝析油或轻质油的特征峰在Ex2 84nm/Em336nm ,中质油或重质油的特征峰在Ex2 56nm/Em360nm ,此外 ,所有油气在Ex2 2 8nm/Em34 2nm处都出现共性峰。根据油气和烃源岩的三维荧光及同步荧光光谱特征 ,通过对钻井岩屑的现场分析 ,能判识油气层、油气的性质、烃源岩及煤 ,及时发现样品是否受到污染 ,并采取补救措施。同步荧光光谱适宜于快速分析 ,三维荧光光谱适宜于精细分析。荧光分析法在现场测井及老井复查中应用效果良好

Applications of fluorescence spectra analysis of detritus in the synthesizing well log

Based on studying charac teristics of three dimensional fluorescence spectrum of various kinds of crude o il and gas from the large fields of our nation, the similarity peak and characte ristic peak of various crude oils and nature gas were proposed. This technique c an be used not only in judging oil and gas layers, type of crude oil, source rock, but also in providing the evidence o f coal, and taking measure at the moment when detritus was polluted as well. The contour of three dimensional fluorescence spectra of source rock is similar to oil reservoir rock, but the fluorescence intensity of source rock is very differ ent from oil reservoir rock that the former is only in hundreds the latter is th ousands. The synchronous fluorescence spectrum befits the fast analysis, the thr ee fluorescence spectra is often used for the analysis of construction. The both are the same in essence.