摘要
通过室内及现场的实验发现：四氯化碳作为岩屑荧光录并的溶油试剂存在致命的弱点——使原油的荧光发生猝死。找出了具有多方面优势的替代试剂——己烷。列举了用美国P．E．公司生产的荧光分析仪对不同性质的原油样品进行荧光光谱分析的结果。综合分析发现：用已烷代替四氯化碳，可以使原油的荧光分析灵敏度提高10～35倍，而且原油的油质越轻，分析灵敏度提高得越明显。否定了认为煤成油、凝析油及部分轻质油不发荧光的观念。探讨了在钻井液中添加改性沥青时，采用已烷为溶油试剂在消除或减轻改性沥青对岩屑荧光录井的影响方面的问题。
It is discovered that carbon tetrachloride is a fluorescence quencher in crude oil detection with cuttings fluorologging. Hexane, which has many advantages as a substitute for carbon tetrachloride, is proposed.In this paper, four typical comparison results of fluorescence spectra of crude oil samples and some of field cores and cuttings are illustrated. The sensitivity of fluorescence analysis is increased by 10 to 35 times when we substitute hexane for carbon tetrachloride as the solvent of crude oil. We also find that the lighter the crude oil, the more obvious the increase in analysis sensitivity. It challenges the old concept that coal-derived oil, condensate and some light oils do not emit fluorescence. The merit of hexane system in eliminating or reducing the fluorescent interference of modified asphalts in drilling fluids for cuttings nuorologging has also been discussed.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
1997年第4期83-86,共4页
Petroleum Exploration and Development
关键词
岩屑录井
荧光分析
己烷
四氯化碳
原油
Cuttings logging, Fluorescence analysis, Hexane, Carbon tetrachloride, Crude oil, (Fluorescence quench)
