激光频率调制吸收光谱测量钻井气样中甲烷^(13)C/^(12)C同位素比  

Measurement of Methane ^(13)C/^(12)C Isotope Ratio of Slurry Gas from Oil Wells by Laser Frequency-Modulation Absorption Spectroscopy

作　　者：张佳民[1] 张向辉[1] 陈金海[1] 马万云[1] 陈瓞延[1] 

机构地区：[1]清华大学原子分子纳米科学教育部重点实验室物理系,北京100084

出　　处：《光谱学与光谱分析》2003年第2期213-216,共4页Spectroscopy and Spectral Analysis

摘　　要：本文利用激光频率调制吸收光谱技术,测量了钻井气样中甲烷^(13)C/^(12)C同位素比。该方法不仅精度较高,而且具有检测限低、光谱分辨率高、样品处理简单和快速测量等优点,可以为油气勘探提供一种有效的辅助手段。In this paper, we determined the ratio of C13 /C12 of methane in slurry gas from oil wells by the method of laser frequency modulation absorption spectroscopy that has many advantages such as high precision, high spectroscopic resolution and rapidly and simply dealing with samples. This technique provided us with a subsidiary method for oil-gas source exploration. The method of laser frequency modulation absorption spectroscopy is based on the method of laser frequency absorption spectroscopy and is more accurate. And this method can be expanded to apply to others aspects easily. We only need change other appropriate laser and select right absorption peak, then we can determined the ration and concentration of diverse gases.

关 键 词：激光频率调制吸收光谱 测量 钻井气 甲烷 同位素比 油气勘探 化学勘探 碳12 碳13 

分 类 号：P632.7[天文地球—地质矿产勘探]