Hydrocarbon Fluorescence and Migration of Petroleum
Hydrocarbon Fluorescence and Migration of Petroleum
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DOI：
10.1306/bc74375b-16be-11d7-8645000102c1865d
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发表时间：
1962
期刊：
影响因子：
3.5
通讯作者：
R. Riecker
中科院分区：
文献类型：
--
作者：
R. Riecker
在紫外线辐射下，所有原油都显示出不同强度和色调的荧光。在分析加拿大科罗拉多、怀俄明州和阿尔伯塔的105个原油和10个有机质提取物的荧光发射光谱期间，在4440 A、4520 A、4720 A、4830 A、5780 A和6300 A处识别出六个突出的荧光峰。原油的荧光是由许多有机化合物的辐射引起的，主要的有机化合物是多环芳烃和杂环烃。荧光的颜色主要由重质烃混合物决定，其组成在石油运移过程中发生变化。渗滤路径越长，并且沿着路径遇到的多孔固体越活跃，荧光化合物的选择性去除就越完全，将荧光转移到较短的波长。荧光颜色受源、储层环境条件影响不大。对怀俄明州Niobrara县Lance Creek油田11个原油样品的荧光分析表明，侏罗纪基底圣丹斯原油不是侏罗纪储层的原生原油，而是从下白垩统烃源岩或储集岩穿过Lance Creek背斜西北侧的逆冲断层迁移而来的。荧光分析表明，来自加拿大阿尔伯塔的McMurray沥青代表一种未成熟原油，其来源于邻近的下白垩统烃源岩。来自科罗拉多丹佛盆地19个油田的白垩纪D和J砂岩原油的荧光表明，一般来说，J砂岩原油比来自类似来源的D砂岩原油从源岩迁移到储层更远。利用荧光分析可以确定原油运移的方向和距离，识别烃源岩，帮助解决因地质构造而复杂的运移问题，确定油田沃茨中天然烃的运移状态。
Under ultraviolet radiation all crude oils exhibit fluorescence which varies in intensity and hue. During analysis of fluorescence emission spectra of 105 Colorado, Wyoming, and Alberta, Canada, crude oils, and 10 organic matter extracts, six prominent peaks of fluorescence were identified at 4440A, 4520A, 4720A, 4830A, 5780A, and 6300A. Fluorescence of crude oils results from the radiations of many groups of organic compounds, the major ones being the polyaromatic and heterocyclic hydrocarbons. Color of fluorescence is determined primarily by heavy hydrocarbon mixtures whose composition is altered during oil migration. The longer the percolation path and the more active the porous solids encountered along the path, the more complete is the selective removal of fluorescing compounds, shifting fluorescence to shorter wavelengths. Fluorescence color is not affected greatly by source or reservoir environment conditions. Fluoranalysis of 11 crude samples from Lance Creek field, Niobrara County, Wyoming, indicates that Jurassic Basal Sundance crude oils are not indigenous to the Jurassic reservoirs but have migrated from Lower Cretaceous source or reservoir rocks across a thrust fault on the northwest side of the Lance Creek anticline. Fluorescence analysis indicates that the McMurray bitumen from Alberta, Canada, represents an immature crude which originated from contiguous Lower Cretaceous source rocks. Fluorescence of Cretaceous D and J sandstone crudes from nineteen oil fields in the Denver basin, Colorado, indicates that J sand crudes have, in general, migrated farther from source rocks to reservoirs than have D sand crudes from similar sources. Fluoranalyses may be used to determine direction and distance of crude oil migration, to identify source rocks, to assist in the solution of migrational problems complicated by geologic structure, and to determine the states of migration of natural hydrocarbons in oil field waters.