中国大陆科学钻探现场分析与地下流体异常识别

On-line Analysis of Gases in Chinese Continental Science Drilling Project and Identification of Fluids from the Earth Crust

摘要: 对中国大陆科学钻探深孔中泥浆进行脱气，采用质谱仪、气相色谱仪和测氡仪在线测定He、CO2、CH4、H2、N2、O2、Ar、C2H6、C3H8、n-C4H10、H2S、CO、Rn等多种气体。在排除钻井过程、钻具磨损、泥浆性能、仪器波动、气路设计等对气体分析的严重干扰后，可以发现气体异常与岩心和地层裂隙、破裂面及构造破碎带等具有相关性。同时采用高效液相色谱分析泥浆清液，也发现了来源于地下的流体。

Abstract: On-line analysis of H_(2), He, CH_(4), CO_(2), Ar, N_(2), O_(2) and ethane, propane and butane has been implemented in the drilling site of Chinese Continental Science Drilling project. It has been found that several factors have important influence on th