利用三维荧光技术判识油气属性

芳烃是原油和生油岩中重要的组成部分,芳烃化合物较为复杂、稳定,可用来进行油源对比及油气属性的鉴别,是油气化探指示油气存在及油气属性的主要指标.三维荧光图谱具有“指纹图”的特征,不同性质的样品,其三维荧光光谱的各特征参量存在明显的差异,而同源样品,其参量又存在着较大程度的共性.通过对某探区近地表土壤样品的三维荧光分析表明,三维荧光光谱对油气属性具有较好的指示作用,据其可推断下覆圈闭的含油气性质,是地面化探研究油气运移及指示油气属性的有效指标.

THE APPLICATION OF THE THREE-DIMENSIONAL FLUORESCENCE TECHNIQUE TO THE RECOGNITION OF OIL AND GAS PROPERTIES

Aromatic hydrocarbons are important components in crude oil and source rock.Aromatic hydrocarbon compounds which are complex and stable may be used to make the oil/source contrast and recognize the oil and gas properties,and can also serve as primary indicators to the existence of oil and gas in geochemical prospecting for oil and gas.Three-dimensional fluorescent spectrum of a graph has the feature of "finger-print".Samples with different properties are different in three-dimensional fluorescent spectrum parameters,whereas the parameters of the samples from the same source have many common properties.Three-dimensional fluorescent spectra have a good indicative significance to the properties of!oil and gas by analysis of the surface samples in some prospect areas.The oil and gas properties of the trap in depth may be inferred based on three-dimensional fluorescent spectra.Three-dimensional fluorescent spectrum is an effective indicator to oil and gas migration and properties for oil and gas surface geochemical prospecting.