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【英文标准名称】:StandardGuideforConductingBoreholeGeophysicalLogging-Neutron
【原文标准名称】:地球物理测量钻孔的标准指南.中子
【标准号】:ASTMD6727-2001(2007)
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D18.01
【标准类型】:(Guide)
【标准水平】:()
【中文主题词】:钻井;地球物理学;中子
【英文主题词】:boreholegeophysics;neutronlog;neutronporositylog;wellconstruction;welllogging
【摘要】:Anappropriatelydeveloped,documented,andexecutedguideisessentialforthepropercollectionandapplicationofneutronlogs.ThisguideistobeusedinconjunctionwithStandardGuideD5753.Thebenefitsofitsuseincludeimprovingselectionofneutronloggingmethodsandequipment;neutronlogqualityandreliability;usefulnessoftheneutronlogdataforsubsequentdisplayandinterpretation.Thisguideappliestocommonlyusedneutronloggingmethodsforgeotechnicalapplications.Itisessentialthatpersonnel(seeSection8.3.2,StandardGuideD5753)consultup-to-datetextbooksandreportsontheneutrontechnique,application,andinterpretationmethods.1.1Thisguideisfocusedonthegeneralproceduresnecessarytoconductneutronorneutronporosity(hereafterreferredtoasneutron)loggingofboreholes,wells,accesstubes,caissons,orshafts(hereafterreferredtoasboreholes)ascommonlyappliedtogeologic,engineering,ground-waterandenvironmental(hereafterreferredtoasgeotechnical)investigations.Neutronsoilmoisturemeasurementsmadeusingneutronmoisturegauges,areexcluded.Neutronloggingformineralsorpetroleumapplicationsisexcluded,alongwithneutronactivationlogswheregammaspectraldetectorsareusedtocharacterizetheinducedgammaactivityofmineralsexposedtoneutronradiation.1.2Thisguidedefinesaneutronlogasarecordoftherateatwhichthermalandepithermalneutronsarescatteredbacktooneormoredetectorslocatedonaprobeadjacenttoaneutronsource.1.2.1Inductionlogsaretreatedquantitativelyandshouldbeinterpretedwithotherlogsanddatawheneverpossible.1.2.2Neutronlogsarecommonlyusedto:(1)delineatelithology,and(2)indicatethewater-filledporosityofformations(seeFig.1).1.3Thisguideisrestrictedtoneutronloggingwithnuclearcountersconsistingofscintillationdetectors(crystalscoupledwithphotomultipliertubes),ortoHe3-tubedetectorswithorwithoutCdfoilcoversorcoatingstoexcludethermalizedneutrons.1.4Thisguideprovidesanoverviewofneutronloggingincluding:(1)generalprocedures;(2)specificdocumentation;(3)calibrationandstandardization,and(4)logqualityandinterpretation.1.5ToobtainadditionalinformationonneutronlogsseeReferencessectioninthisguide.1.6ThisguideistobeusedinconjunctionwithStandardGuideD5753.1.7Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisguideshouldnotbeusedasasolecriterionforneutronlogginganddoesnotreplaceeducation,experience,andprofessionaljudgment.Neutronloggingproceduresshouldbeadaptedtomeettheneedsofarangeofapplicationsandstatedingeneraltermssothatflexibilityorinnovationarenotsuppressed.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudgedwithoutconsiderationofaproject''smanyuniqueaspects.ThewordstandardinthetitleofthisdocumentmeansthatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.1.8ThegeotechnicalindustryusesEnglishorSIunits.Theneutronlogistypicallyrecordedinunitsofcountspersecond(cps)orinpercentporosity.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatoryrequirementspriortouse.Theuseofradioactivesourcesin......
【中国标准分类号】:A44
【国际标准分类号】:07_060
【页数】:9P.;A4
【正文语种】: