基于脉冲中子源测井仪在煤层气探测中的使用研究  

Study on coal mine methane exploration based on pulsed neutron source logging tool

作　　者：赵玉东[1] Zhao Yudong(Coal Resources Geological Bureau,Shanxi Coal Industry Secretary,Taiyuan 030000,China)

机构地区：[1]山西省煤炭工业厅煤炭资源地质局,山西太原030000

出　　处：《煤炭与化工》2018年第6期78-80,84,共4页Coal and Chemical Industry

摘　　要：为监测井下煤层地层类型和地层组分,将脉冲中子源测井技术应用于煤层气探测研究中。根据脉冲中子源技术对测井仪进行了结构设计,通过探测仪控制装置对中子发射进行控制,使之转化成电脉冲信号,控制脉冲序列来完成中子反应过程的γ射线探测,生成能量谱和时谱参数。通过对实际矿井进行试验分析,表明此脉冲中子探测仪可精确测量井下煤层气构成。The pulsed neutron source logging technology was applied to the detect underground coal seam type and formation composition.The structure of the logging tool was designed according to the pulsed neutron source technology.The neutron emission was controlled by the detector control device to convert it into an electric pulse signal and the pulse sequence which was controlled to complete the detection of the gamma ray in the neutron reaction process,with energy spectrum and time spectral parameters.Through the experimental analysis of the actual mine,the results showed that this pulsed neutron detector could accurately measure the underground coal gas composition.

关 键 词：脉冲中子源 煤层气 测井仪 测量分析 

分 类 号：TD631.83[矿业工程—矿山机电]