针对陆域天然气水合物勘查技术存在的问题，通过对国内外勘查技术发展与现状的分析，在对青海木里煤田的天然气水合物勘查的基础上，采用现场实践和理论分析的方法对常规测井参数和简易测温方法进行了研究。结果表明：常规测井参数对冻土层综合解释是可行的，该成果成功应用于木里煤田全区，发现了疑似天然气水合物的钻孔数和疑似天然气水合物的层数；理论分析发现简易测温方法所测温度与实际存在误差，现场实测和理论计算相结合得出了误差修正值为20m，精确地计算出天然气水合物的实际埋深，并绘制出疑似天然气水合物单孔累计厚度分布图。%According to the problems existed in the exploration technology of the land gas hydrates, with the analysis on the development and present status of the exploration technologies at home and abroad, based on the exploration of the gas hydrates in Qinghai Muli Coalfield, the site practices and theoretical analysis method were applied to the study on the conventional logging parameters and the sim- ple temperature measuring method. The results showed that the conventional logging parameters would be feasible to the comprehensive ex- planation of the freezing ground. The achievement was successfully applied to the full area of Muli Coalfield. The drilling borehole num- bers of the liked gas hydrates and the layer number of the liked gas hydrates were found. The theoretical analysis found that the tempera- ture measured with the simple temperature measuring method had an error to the actual temperature. The error correction value was 20 m obtained from the site measurement and the theoretical calculation combination. The actual depth of the gas hydrates was accurately calcu- lated and a distribution drawing of a single borehole accumulated depth for the seemed gas hydrates was made.
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