【英文标准名称】:StandardGuideforConductingBoreholeGeophysicalLogging-Gamma
【原文标准名称】:进行钻孔地球物理岩芯记录-γ的标准指南
【标准号】:ASTMD6274-1998(2004)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:天然γ岩芯记录;核统计学;井建造;井测量;钻孔地球物理学;中止时间校正;γ岩芯记录
【英文主题词】:boreholegeophysics;deadtimecorrection;gammalog;naturalgammalog;nuclearstatistics;radioisotope;wellconstruction;welllogging
【摘要】:Anappropriatelydeveloped,documented,andexecutedguideisessentialforthepropercollectionandapplicationofgammalogs.ThisguideistobeusedinconjunctionwithGuideD5753.Thebenefitsofitsuseincludeimprovingselectionofgammaloggingmethodsandequipment,gammalogqualityandreliability,andusefulnessofthegammalogdataforsubsequentdisplayandinterpretation.Thisguideappliestocommonlyusedgammaloggingmethodsforgeotechnicalapplications.Itisessentialthatpersonnel(seethePersonnelsectionofGuideD5753)consultup-to-datetextbooksandreportsonthegammatechnique,application,andinterpretationmethods.1.1Thisguidecoversthegeneralproceduresnecessarytoconductgamma,naturalgamma,totalcountgamma,orgammaray(hereafterreferredtoasgamma)loggingofboreholes,wells,accesstubes,caissons,orshafts(hereafterreferredtoasboreholes)ascommonlyappliedtogeologic,engineering,ground-waterandenvironmental(hereafterreferredtoasgeotechnical)investigations.Spectralgammaandloggingwheregammameasurementsaremadeinconjunctionwithanuclearsourceareexcluded(forexample,neutronactivationandgamma-gammadensitylogs).Gammaloggingformineralorpetroleumapplicationsareexcluded.1.2Thisguidedefinesagammalogasarecordofgammaactivityoftheformationadjacenttoaboreholewithdepth(SeeFig.1).1.2.1Gammalogsarecommonlyusedto:delineatelithology,correlatemeasurementsmadeondifferentloggingruns,anddefinestratigraphiccorrelationbetweenboreholes(SeeFig.2).1.3Thisguideisrestrictedtogammaloggingwithnuclearcountersconsistingofscintillationdetectors(crystalscoupledwithphotomultipliertubes),whicharethemostcommongammameasurementdevicesusedingeotechnicalapplication.1.4Thisguideprovidesanoverviewofgammaloggingincluding:generalprocedures;specificdocumentation;calibrationandstandardization,andlogqualityandinterpretation.1.5ToobtainadditionalinformationongammalogsseeSection13.1.6ThisguideistobeusedinconjunctionwithGuideD5753.1.7Gammalogsshouldbecollectedbyanoperatorthatistrainedingeophysicalloggingprocedures.Gammalogsshouldbeinterpretedbyaprofessionalexperiencedinloganalysis.1.8ThegeotechnicalindustryusesEnglishorSIunits.Thegammalogistypicallyrecordedinunitsofcountspersecond(cps)orAmericanPetroleumInstitute(API)units.Thisguidedoesnotpurporttoaddressallofthesafetyandliabilityproblems(forexample,lostorlodgedprobesandequipmentdecontamination)associatedwithitsuse.1.10Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.1.11Thisguideoffersanorganizedcollectionofinformationoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorjudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepresentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject''smanyuniqueaspects.Theword"Standard"inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.
【中国标准分类号】:E11
【国际标准分类号】:17_040_99
【页数】:11P.;A4
【正文语种】: