Questions for Code of Practice Short Course: The Answers · Questions for Code of Practice Short Course 13. What is the role of the drilling supervisor? Drilling Supervisor Or Company

QuestionsforCodeofPracticeShortCourse:TheAnswers

June13‐14,2018•AddisAbaba,Ethiopia

Name____________________________________________________________________

YourOrganization__________________________________________________________

1. Whataresomeofthecriticallegal,institutionalframeworkcomponentsthatneedtobe

inplacebeforeprivatesectordeveloperswillmoveforwardwithprojectdevelopment?‐ Page#xviii‐ ‐ Designationofresponsibleministry,theapplicationprocessandrequirements

thereof,‐ Applicationfees,Bondingrequirements,EnforcementoftheprovisionsoftheCode,

PenaltiesfornoncompliancewithprovisionsoftheCode

‐ 2. IstheCodeofPracticeprimarilyaregulatorysystemoraguidancedocumentdesigned

topromotebestpractices?‐Page#xviiIsaguidancedocument,promotesbestpracticesingeothermaldrilling,someshouldbegivenseriousconsiderationandothersthatshallbecompliedwith.

3. DoestheCodeofPracticeprovidefor:(Markallthatapply)Page#xv

[X]Healthandsafety[X]Environmentalprotection[X]Wellcontrol[X]Dataacquisitionandmanagement[X]Riskmitigation

4. Canthedrillingplanbeusedformultiplewells?[]Yes[X]No.Whataretheprimary

Whataretheprimarywelldesignconsiderations?Explain.Page11Abasicwelldesigncanusedformultiplewellscanbeusedforaparticularfield,buteverywellshouldhaveitsowndrillingplanandcasingsettingdepthstobemodifiedperwellasneeded.Intendedpurpose,designlifetimeandongoingoperationandmaintenance.Alltheassumptionsusedlikecorrosionrates,thermalcyclesetcshallberecordedapartofthedocumentation.

Page2of12–QuestionsforCodeofPracticeShortCourse

5. Explainthedifferencesbetweenthedrillingplan,thewellsiteplanandthewelldesign.

DrillingplanPage11

Drillingplan–descriedtheworks,demonstrateadequateprecautionsasperprovisionsofthecodeandwellcontrolmethodstobeused.

WellSitePlanPage51WellSitePlan–sitedesignandconstruction,managingrunoffduringthedrillingoperation,Geotechnicalassessmentandcompliancewithexistingenvironmentalconsentsandpermitapplicationsrequirements.WellDesignPage14WellDesign‐basedonthewelldepth,wellheadlocationandwelltarget.Expectedsubsurfaceconditions,casingsettingdepthsandfactors.

6. WhatarethetopicstobediscussedduringtheDrillWellonPaper(drillingplanningstage)andwhoshouldbeinvolved?

DWOPisanimportantstepinwellplanning.Theprocessanalyseseachprocessofdrillingthewell,improvingdrillingefficiency,maintainingoperationalsafetystandards,focusingontimeandcostofthewelldrilling,andreducingthenonproductivetime.

Attendees–DrillingorProjectmanager,DrillingSuperintendent,DrillingEngineer,

DrillingSupervisor,LogisticsManager,Geologist,Geophysicist,Geochemist,Reservoir

Engineer,ProductionManager,HSEManager,Rigmanager,Toolpusher,Driller,Rig

Crew,RigMechanic,RigElectrician,MudEngineer,SolidControlMechanic,Cementing

Engineer,AirDrillingEngineer,MudLoggingEngineer,WirelineEngineer,Casing

RunningCrewChief,DrillingBitEngineer,WellTestingEngineer,DirectionalDrilling

Engineer,OtherKeyStakeholderslikeStateorCountyRepresentative,CampServices

Head.

Page3of12–QuestionsforCodeofPracticeShortCourse7. Whatfactorsshouldbeconsideredinwellsiteselection?Page50

Surfacethermalactivityandgeologyintheimmediatevicinityofthelocation.Sufficientopensurroundingsfordispersionofdangerousgasesthatmaycomefromthewell,requirementforlightingspillmanagementandfornoiseabatementduringthedrillingandwelltestingoperation.

8. Whatinformationshouldbeincludedinthewellsiterecords?Page57Asbuiltdiagramtoinclude–welllocation,cellarconstruction,anyundergroundpipeworksorservices,areasofcutandfillandanygrouting,locationsofdrillcuttingsandsump(existingorremoved,ifdrillingcuttingsonsite,locationandanychemicalanalysis

9. Whenwouldgroutingofthepadberequired?Howshoulditbecarriedout?Page127Necessarytoimproveshallowconditionsatwellsiteincludingincreasingloadbearingcapacity,reducethefrequencyandseverityoffluidlossesinthetopholesection,strengthentheformationtohelpindivertinggeothermalfluidflowincaseoffashallowblowout

10. Whendesigningthedrainageandwastedisposal(sump)whatarethedesignconsiderations?Page53Tocontaincuttings,liquidandcementingwastematerials,isolationofpartofthevolumeforprimarysettlement,maximumfluidlevelshouldbebelowcellarfloorlevel,noerosionorcollapseofsumpwalls,havethevolumenecessarytocontainalldrilledsolids,wastemudandcement,holdingcapacitytobefivetimesthevolumeofsolidmaterialexpectedtobedrilled,shouldbeperiodicallymonitoredincompliancewithenvironmentalpermitsandconsents.

11. WhataboutCellardesignconsiderations?Page52Cellardepthtobeminimizedandwellventilated,withstandalldirectandindirectloadsimposedbydrillingequipmentandothersubsequentinstallations,permanentlevellingdatumshouldbeestablishedoncellarasreferencepoint,shouldbedrainedatfloorlevelwith250mmormorediameterand1in40grade.

12. Whatarethecriteriaforcasingsettingdepths?Page20MinimumcasingshoedepthofeachcementedcasingstringshallbecalculatedtobetheverticaldepthwheretheformationhassufficientEffectiveContainmentPressuretoequaltheMaximumDesignPressureexpectedtobeencounteredinthenextopenholesection.Incompetentformation,caseoutlosszones,providereservoirisolation,andavoidpossibilityofinterconnectionwithadjacentwell.


13. Whatistheroleofthedrillingsupervisor?

DrillingSupervisorOrCompanyMan‐Directsandcontrolsalldailyoperationalactivitiestodrilling,workover,wellcompletionoperationscarriedoutbythesubcontractorsandservicecompaniesontherig.Directingtheexecutionofthedrillingprogramsincludingcasing,cementing,directionaldrillingandairdrilling,anychangestotheplan,inasafemannerforpersonnelandequipment.Conformancetoalllocal,state,andfederal,andinternationalrulesandregulations.Monitoringlogisticsandavailabilityofequipmentandmaterialsontime,Preparesthedailydrillingreportincludingandisresponsibleforthewellcontroloperations.

14. Whatistheroleofthesafetyofficer?Assuranceofsaferworkplaceenvironmentwithregardtothehealthofworkers.Developingandcommunicatingmeasurestoassurepersonnelsafety,correctunsafeactsincludingSTOPwork.Participateinmorningmeetingsandprejobsafetymeetingstoidentifyanyhealthandsafetyconcerns.ReviewtheIncidentActionPlanforsafetyimplications.Investigateaccidentsthathaveoccurredwithinincidentareas,includingspillsandhazardouswastemanagement.EnsurepreparationandimplementationofSiteSafetyandHealthPlan(SSHP).Inspectsthesitetoensureitisahazard‐freeenvironmentandmaintenanceofallsafetyequipmentlikefireextinguishers,firealarms.Reviewandapproveallsubcontractorssafetyplans.Conductsinvestigationsofallaccidentsandnear‐misses,riskassessmentandjobhazardanalysis.Preparestheaccidentreportandreportstotheconcernedauthorities.Promotessafepracticesatthejobsite.Enforcessafetyguidelinesandconductsemergencydrills.EnforcethePermitToWorksystem,monitoringandreview.

15. Isawatersupplyrequiredfordrillingoperationsadequateforwellcontrol?

[]Yes[X]NoIfnot,howmuchwateristheminimumrequirement??

Theon‐sitewaterreservoirshouldhaveavolume.Page55Tosupportalldrillingoperations,supplyrateadequateforallquenching,drilling(withoutreturnsortotallosses)andcementingoperations.Haveacapacitythatallowscontinuousquenchingofthewellforaperiodofnotlessthan12hours,normally800‐1000litresperminutewouldberequiredforquenching

16. TheSiteSignagethatisrequiredshallincludeatleast–Page56Hazards,constraintsonentry,andrequirementsofpersonalprotectiveequipment(PPE),Wastesumpsthatconstitutehazardsandareaswherehazardousgasescanaccumulate.

17. Inconsideringgeneratorcapacity,whatfactorsand/orpiecesofequipmentshouldbeconsidered?Page62ItshalladequatetosupplyentireelectricalloadrequiredbytherigandassociatedequipmentusedindrillingincludingPrimemovers,electricallydrivenaircompressors,BOPaccumulatorpump,Lighting,mudagitatorsanddeckwinches,heating,fluidcoolingfacility,fueltransferandofficesandaccommodation.Page5of12–QuestionsforCodeofPracticeShortCourse

18. Whereshouldthecontrolpanel(s)fortheblowoutpreventerbelocatedrelativetothedrillingrigandwhatotherdesignfactorsneedtobeconsidered?Page69HowoftenandwhenshouldtheBOPbetested?Page85OperationoftheBOPsystemshouldbepossiblefromatleasttwoindependentlocations.Oneoftheseshallbeadjacenttothedriller’sconsoleandotherbeasafedistanceawayfromrigfloor(accumulatorposition)whichissheltered.Drillingwellheadsshallbepressuretestedafterassemblyandpriortodrillingoutthecementfromthecasing.TheBOPshallbefunctiontestedatleastonceaweekasperAPISTD53

19. WhatarethepropertiesofDrillingFluidsthatshouldmonitored?(Markallthatapply.)Page80[X]Density, [X]FunnelViscosity[X]GelStrength [X]Waterloss[X]Solidcontent [X]MudtemperatureINandOUT.Themudcoolers(fluidcoolingsystem)shouldbedesignedtomaintainmudtemperaturebelow__60__degreesCentigrade?Page66

20. Precautionswhencementingageothermalwell?(Markallthatapply.)Page92[X]Pressuretestingcementinglines,

[X]Cementdensitymonitoringwhilepumping,

[X]Avoidtrappingwaterbetweencasings,

[X]Backfillannuluscementtogetcementbacktosurface.

21. Backuppumpsand/orgeneratorsshouldbeprovidedforwhatpiecesofequipment?Page62Backupgeneratorcapacityshallbeavailableandadequatetosupplyataminimum,theelectricalloadforitems(a)to(d)–Primemovers,electricallydrivenaircompressors,lightingandBOPaccumulatorpump


22.Whatgasesarecriticaltomonitoratalltimesduringdrillingoperationsevenwhennotmakinghole?Indesigningthegasdetectionsystemwhatarethedesignconsiderationsandminimumrequirements?Page71H2S(hydrogensulphide)andCO2(carbondioxide)Gasdetectionsystemshallbefunctioningatalltimeswhiletherigisoperating,withbothaudibleandvisualalarms,Agashazardabatementplanshouldbepreparedandalltherigcrewshallbefamiliarwithitsapplication.

23. Whataretheparametersanditemstoberecordedinthedailydrillingreport?Instructorwillshowacopyofadailyreport

24.Whatisthepurposeofhavingwindsocksatthedrillingsite?Whatisthemusterpointandwhereshoulditbelocatedandwhy?Thewindsockonadrillingrigsitehelpstoshowthewinddirection,andtoescapetotheupwinddirectionincaseofreleaseofhazardousgasesfromthewell.Amusterpointisadesignatedplacewhereallpersonnelonthedrillsiteassembleincaseofanemergencyonthedrillrigsite.Thetwomusterpointsarelocatedupwindanddownwindoftheprevailingwindcondition.Thiswillallowthepersonneltogototheupwindmusterpointifthewinddirectionchanges.

25. Whatparametersshouldbecontinuallymonitored(RigInstrumentationMinimumRequirements)?Page71Minimumrequirementsforriginstrumentationshallbe:

(a)Totalweightindicator;(b)Tankvolumeandgain‐lossindicators;(c)Standpipepressuregauge;(d)Wellheadpressuregauge;and(e)Indicatorsfortemperaturesofrigpumpsuctionfluidsandreturningfluids.

26. Doexplosiveson‐siteneedspecialconsideration?[X]Yes[]NoIfyes,explain–Page74

Whereexplosivesaretobeuseddownhole(forexamplestring‐shots,junkcharges,perforatingcharges),theexplosives,detonators,detonatingcord,detonatingsystem,andthewirelineshallallbeselectedforthetemperatureandpressureconditionslikelytobeencountered.Explosivesandassociateditemsshallbestoredaccordingtolocalornationalrequirementsandsecuredagainstentrybyunauthorizedpersonal


27. Whyiscompletedataacquisitionandmanagementacriticalaspectofanydrilling

operation?Page106Drillingrecordsareabaselineforsubsequentwellconditionmonitoring,andanyworkoverorinterventioninfuture.Tobeusedasoffsetdataforcorrelation,helpindirectionaldrillingplanning,tolocatedownholeformationconditions,andbetterunderthegeologyandreservoirconditions.

28. Howoftenshouldtheconceptualmodelofthefieldbeupdatedandwhy?Page106Conceptualmodelofthefieldshouldbeupdatedaftereverywellisdrilled,usingthedrillingparameterlogs,welllogsandwelltestinginformation.Thisishelpfulinreservoirengineeringpurposes(permeablezonesandformationpressureandtemperatureconditions),welldesigningforfuturewellsandbetterunderstandthegeologyofthefield.

29. WhatarethetopicstobediscussedduringtheLessonLearnt(endofthewellmeeting)andwhoshouldbeinvolved?Thewelldrillingprogramandtheactualwelldrilleddetails,bits,mud,casingandcement,directionaldrilling,airdrilling,nonproductivetimeandHSEincidents.Thetime,costandincidentsgraphicalandfigures.Thesolutionsfortheproblemsorimprovementsforthenextwellprogram.Attendees–DrillingorProjectmanager,DrillingSuperintendent,DrillingEngineer,DrillingSupervisor,LogisticsManager,Geologist,Geophysicist,Geochemist,ReservoirEngineer,ProductionManager,HSEManager,Rigmanager,Toolpusher,Driller,RigMechanic,RigElectrician,MudEngineer,SolidControlMechanic,CementingEngineer,AirDrillingEngineer,MudLoggingEngineer,WirelineEngineer,CasingRunningCrewChief,DrillingBitEngineer,WellTestingEngineer,DirectionalDrillingEngineer,OtherKeyStakeholders


ExtraPointQuestions

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Describewhatiswronginthesephotos:Photo1:Casings

Casings are not stored properly


Photo 2: Forklift

Worn out forklift tyres

Photo 3: Sensors

Hydrogen sulphide sensor installed but not connected.


Photo 4: BOP

Missing bolts


Photo 5: Drill Rig

Wind sock is missing


Photo6:BlowOutPreventerActivator

IncorrectlocationofBOPkoomeyaccumulator.It'stooclosetothewellandnotprotected.

Questions for Code of Practice Short Course: The Answers · Questions for Code of Practice Short Course 13. What is the role of the drilling supervisor? Drilling Supervisor Or Company

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Questions for Code of Practice Short Course: The Answers · Questions for Code of Practice Short Course 13. What is the role of the drilling supervisor? Drilling Supervisor Or Company