UnderbalancedDrillingOperationsAPIRECOMMENDEDPRACTICE92UFIRSTEDITION,NOVEMBER2008REAFFIRMED,APRIL2013ADDENDUM,NOVEMBER2015UnderbalancedDrillingOperationsUpstreamSegmentAPIRECOMMENDEDPRACTICE92UFIRSTEDITION,NOVEMBER2008REAFFIRMED,APRIL2015ADDENDUM,NOVEMBER2015SpecialNotesAPIpublicationsnecessarilyaddressproblemsofageneralnature.Withrespecttoparticularcircumstances,local,state,andfederallawsandregulationsshouldbereviewed.NeitherAPInoranyofAPI'semployees,subcontractors,consultants,committees,orotherassigneesmakeanywarrantyorrepresentation,eitherexpressorimplied,withrespecttotheaccuracy,completeness,orusefulnessoftheinformationcontainedherein,orassumeanyliabilityorresponsibilityforanyuse,ortheresultsofsuchuse,ofanyinformationorprocessdisclosedinthispublication.NeitherAPInoranyofAPI'semployees,subcontractors,consultants,orotherassigneesrepresentthatuseofthispublicationwouldnotinfringeuponprivatelyownedrights.Usersofthisrecommendedpracticeshouldnotrelyexclusivelyontheinformationcontainedinthisdocument.Soundbusiness,scientific,engineering,andsafetyjudgmentshouldbeusedinemployingtheinformationcontainedherein.APIpublicationsmaybeusedbyanyonedesiringtodoso.EveryefforthasbeenmadebyAPItoassuretheaccuracyandreliabilityofdatacontainedinthispublication.However,theInstitutemakesnorepresentation,warranty,orguaranteeinconnectionwithpublicationoftheserecommendedpracticesandherebyexpresslydisclaimsanyliabilityorresponsibilityforlossordamageresultingfromuseorapplicationshereunderorforviolationofanyfederal,state,orlocalregulationswithwhichthecontentsmayconflict.Usersofrecommendationssetforthhereinareremindedthatconstantlydevelopingtechnologyandspecializedorlimitedoperationsdonotpermitcompletecoverageofalloperationsandalternatives.Recommendationspresentedhereinarenotintendedtoinhibitdevelopingtechnologyandequipmentimprovementsorimprovedoperatingprocedures.Theserecommendedpracticesarenotintendedtoobviatetheneedforqualifiedengineeringandoperationsanalysesandsoundjudgmentsastowhenandwhere...