Designation:D6167−19StandardGuideforConductingBoreholeGeophysicalLogging:MechanicalCaliper1ThisstandardisissuedunderthefixeddesignationD6167;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thisguidecoversthegeneralproceduresnecessarytoconductcaliperloggingofboreholes,wells,accesstubes,caissons,orshafts(hereafterreferredtoasboreholes)ascommonlyappliedtogeologic,engineering,groundwater,andenvironmental(hereafterreferredtoasgeotechnical)investi-gations.Caliperloggingformineralorpetroleumexplorationanddevelopmentareexcluded.1.1.1Thisguideoffersanorganizedcollectionofinforma-tionoraseriesofoptionsanddoesnotrecommendaspecificcourseofaction.Thisdocumentcannotreplaceeducationorexperienceandshouldbeusedinconjunctionwithprofessionaljudgment.Notallaspectsofthisguidemaybeapplicableinallcircumstances.ThisASTMstandardisnotintendedtorepre-sentorreplacethestandardofcarebywhichtheadequacyofagivenprofessionalservicemustbejudged,norshouldthisdocumentbeappliedwithoutconsiderationofaproject’smanyuniqueaspects.Theword“Standard”inthetitleofthisdocumentmeansonlythatthedocumenthasbeenapprovedthroughtheASTMconsensusprocess.1.2Thisguidedefinesacaliperlogasarecordofboreholediameterwithdepth.1.2.1Caliperlogsareessentialintheinterpretationofgeophysicallogssincegeophysicalresultscanbesignificantlyaffectedbyboreholediameter.1.2.2Caliperlogsprovideusefulinformationforboreholecompletionandtestingandarecommonlyusedtoassessboreholediameter,shape,roughness,andstability;calculateboreholevolume;provideinformationonboreholeconstruc-tion;anddelineatelithologiccontacts,fractures,andsolutioncavitiesandotheropenings.1.2.2.1Borehole-diameterinformationisessentialforcal-culationofvolumetricratefromflowmeterlogs.1.2.2.2Caliperlogsareusedtolocatetheoptimumplace-mentofinflatablepackersforbore...
