密度和中子测井对煤层甲烷含气量的响应及解释

THERESPONSESOFDENSITYANDNEUTRONLOGGINGSONTHECOALBEDMETHANECONTENTANDTHELOGGINGINTERPRETATIONGaoXuchen(No.1ExplorationBureauofChinaNationalAdministrationofCoalGeology)AbstractThecoalbedmethanecontentisthemostimportantindexfortheevaluationofcoalbedmethane.Theresponsesofdensityandneutronloggingsonthecoalbedmethanecontentcouldbecalculatedtheoretically,thentheequationusedtocalculatethegascontentcouldbededucedfromit.Keywordsformationdensitylogging;neutronlogging;gascontent;response