摘要
气测录井过程中,通过对地层中烃类气体及组分监测分析,可以预测煤层出现的井深,卡准煤层取心位置。通过煤层的气测异常显示值与煤心实测含气量进行对比,取得经验数据,可以定性预测煤层含气量,避免万一无煤心时缺少煤层含气量参数。通过气测录井,可以监测和初步评价设计外煤层的含气量,发现新的煤层气测试层位,扩大煤层气勘探成果。
By monitoring and analysing hydrocarbon gas and its compositions of the formation. the coalbed depth can be predicted and coalbed coring position can be clamped. In comparision between the abnormal values which gas logging shows and gas content of actual measurement through the coal core. people can get empirical data and can qualitatively predict coalbed gas content. avoiding the shortage of coalbed gas content parameters in case of non coalcore. We can monitor and primarily evaluate non—designed coal layer gas content. find new coalbed gas testing zone. and then extend coalbed gas exploration results.
