岩屑含油情况现场快速检测初探

Preliminary study on rapid detection lithic oil situation on site

石油的荧光物质主要以二环、三环芳香烃为主,这些物质的分子在紫外线的激发下会发生跃迁而产生荧光。石油的荧光特性,为石油成分的检测提供了便利。常规的荧光录井需要对石油进行萃取,且轻质油不能被365nm的紫外光充分激发,导致对轻质油的检测很困难。本文研究了含油岩屑在365nm紫外线与254nm紫外线激发下的荧光现象以及发射光的光谱特性,得到利用短波紫外线检测轻质油的充分条件。通过实验,初步探讨了如何利用紫外线与紫外摄像头进行现场岩屑探测,以达到快速检测岩屑含油情况,尤其是快速检测含轻质油情况的目的。

Oil fluorescent substances are mainly dominated by second ring, three-ring aro-matic hydrocarbons, under UV excitation, molecules of these substances will generate fluo-rescence because of transition occurs. The fluorescence characteristics of the oil facilitate the oil composition detection. The conventional fluorescence logging need extraction of the oil, light oil can not be sufficiently excited by 365 nm UV, resulting in the detection of the light oil is very difficult. This paper studies fluorescence phenomenon of the oily lithic under 365 nm UV and 254 nm UV excitation as well as the spectral characteristics of the emitted light, get a sufficient condition for the use of the shortwave UV detection light oil. In order to achieve the rapid detection of lithic oil situation, especially the rapid detection of light oil, this paper preliminary study of how to use UV and UV camera detect lithic on site through the experiment.