钻井作业流水账final.docx

钻井作业流水账final.docx

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钻井作业流水账final

钻井作业流水账

FirstSpud/22”Section

1.Afterrigmove,checkwaterpumpsandwatersupplylinesduringequipmentinstallation.Filluptanksw/waterinadvance.Mix1000BBlsspudmud.

2.Afterinstallation,PTcirculatingsystemw/cleanwater.M/UDrillstring.Preparespud-in.

3.BHAforspud-inasfollowed:

BIT+NBRR（withFLOAT+TOTCORing）+SHOCKSUB+1

9.5"DC+STRR+2

9.5"DC+15

s8-1/4"DCS+5"HWDP

4.Drill22”holeto+/-750ft.

5.TheDo’sandDon’ts:

a）Usesinglepumpforfirstspud.Makecirculationbyusingjetcellarthroughdischargelinetoshaleshaker.Establishcirculation.

b）LowWOB,LowRMP（50-60）Lowstks（60-65）forfirst10ft.Thenincreasetooptimumdrillingparametersgradually.Afterdrill1joint,increasetheRPMandpumpstksto105-110RPMand95-100SPM.WOBincreaseswiththeDSweight.MaximumWOBis45-50KLBs.

c）Mostofwellsbeforehadlostcirculationwhiledrilling22”section.Iflosscirculationoccurs,continuedrillingwithwater&75*2SPM.Pump15-20HIVISpilleveryjointinordertocarrysands.

d）AverageROPshallbe30ft/hduringthissection.Mostofwellsbeforehadseverebitbouncing.Optimumdrillingparametersiscritical.

6.Bereadyforrunning18-5/8”CSG:

a）RemoveCSGprotector.Drift&measureallstands.Cleanthreads.

b）InstallCSGfloatshoeandweld.

c）InstallCSGcentralizers.Oneforeachforfirst5JTs,thenoneforevery3JTs.Installcementbasketonthebottomofthelastthirdjoint.Installonecentralizeraboveandonebelowcementbasket.

d）Preparecasingrunningtools:

slips（21）,singlejoint,Btypecasingtong（usedasbackuptong）,circulatinghead,Weatherfordcasingtongetc.

e）PrepareDPsusedforISCbasedonCSGlength.CheckandverifyDPcentralizeretc.

7.DrilltoCSGshoedepth,beforePOOH:

a）Pump100BBLsHIVISandcirculate20-30min.

b）Wipertripto9-1/2”DCoutofrotarytable.Ifanyobstruction,reamw/waterandpumpHIVISforcuttingscarrying.

c）Backtobottom.Pump50BBLsHIVIS&circulate（20min）.Thenpump75PCFHIVISpilltobottom.

d）Wellsurvey.

8.POOH.L/Dreamer&SS.Don’tfillin.

9.M/UDPs（usedforISC）andrackbackinderrick.

10.RIHsurfacecasing.Checkfloatshoe.Runsomewaterwithfirstcasingatv-doortocheckfloatshoecondition.Threadlock（orusethreadlocker）tofirst3jointsorweldthem.

11.ContinuerunningCSG.M/UcirculatingheadattheV-doorinadvanceincaseofanyobstruction.

12.AfterrunningCSG,bereadyforcementingjob.ISC（Innerstringcement）isusuallyusedfor18-5/8”CSG.Beforecementing,running5”DP（withISCstinger）intoCSG.InsertISCstingerintofloatshoe.FillupDPandCSGannulusw/water.P/UandpulltheStringeroutoffloatshoe.Checkmudfluidlevelofannulus.Re-stabstinger.M/U411

4”Unionwith4”union

”circulatingsub.Circulate（InnerDPVolume）.R/Ucementingline&cement.Afterfinishingpumpingcement,breakout4”unionanddropplug.Ifthereisnocementreturnsatcellar,atopcementjobisrequired.Beforetopcementjob,fillinwellborewithsomeSCMfirst.

13.Wellheadrectificationafter-cementing:

a）Prepare2bars,anchorlugsandwateroutletsforsupportingCSG.

b）Weldlegs,anchorlug,wateroutletsandunions.CutCSG（informForemanfirst）.Theseshouldbedonewithin3hours.

17-1/2”Section（二开）

1.Beforespud=in,P/U17-1/2”bit,reamer,bitbreakerandothertoolsontodrillfloor.

2.BHAof17-1/2”sectionshouldbeasfollows：

BIT+NBRR（withFLOAT+TOTCORing）+SS+1Jt9.5"DC+STRR+2Jts9.5"DC+8Jt8-1/4"DCS+JAR+4Jts8-1/4"DCS+12Jts5"HWDP

3.M/UandRIH.Checkandverifythestringtally.

4.Hydro-testcasingwith2000psi.

5.Drillcementplugandfloatshoe.Displacewaterwithmud.

6.Drill17-1/2”holetoTDasfollow:

a）DrillwithlowparameterswhenreamerisoutofCSGshoe.80SPMw/singlepump65-70RPMWOB:

25-30KLBs;Commonparametersshouldbegraduallyincreasedto45-50KLBs,100-110RPM&75*2SPMw/doublepumps.

b）WhenHIGHROP,HIGHTORQUEoccursorcannotreachbottomafterM/UJT.PUMPHIVISandBACKREAM.

c）LCalwaysoccursindrill17-1/2”section.Drillw/waterwhenlosscirculationoccurs.Pump20BBLsHIVISforcarryingsands.

7.Preparationduringdrilling13-3/8”CSG

a）RemoveCSGprotector.Measure,drift&cleantheCSG.

b）M/UFS&FC.FCshouldbeconnectedtothe3rdboxandtackweld.

c）Installcentralizerasfollows:

Fixonecentralizereveryjointforthefirst10JTsunderconditionofLC.Thenoneevery3JTstosurface.Undernormalcondition,1centralizerforfirst5JTs,thenevery3JTstosurface.Fix1centralizerabove&1belowDVPKR.

d）Preparetoolsforrunning13-3/8”CSGasfollows:

13-3/8”CSGElevator,Slip（17pieces）,singleelevator,CSGcirculationhead,WeatherfordCSGtong&CSGBushing.

e）M.U/P.U.landingjoint（withflange）&landingbase（onestage/primaryCSGhead）onpiperack.

f）ConnectDVPKRtoCSGasperForemanInstruction.

g）CheckTWO

（2）CAMERON2-1/16”gatevalves.

h）PrepareforN/UBOPandtestingtools.

8.Drill17-1/2”sectiontoCSGpoint:

Thesameprocedurewillbeconductedasthefirstsection:

∙PumpHI-VISpills&CHC.

∙WipertriptoCSGshoe.Backtobottom.

∙Sweepholew/HI-VIS&CHC.SpotHI-VISbeforePOOH.DropTOTCOSurvey.

∙POOH.L.D.Reamer&9-1/2”DC.

9.RunCSGandcementing.

a）BeforerunningCSG,cuttheflowlineof18-5/8”wellheadwiththeheightequaltotheheightbetweentwoflangesonlandingbase（betweenthetopoflandingbaseandbottomflange）.Forinstance,theheightofFMCis17.5”toensurethetopflangeoflandingbasewillleveltheground.Cuta4”diameterholebeneaththescarfingformudreturnduringsecondstagecementing.

b）HoldPJSM.ForemansummarizesthecasingrunningproceduresandsomeDos&Don’ts.

c）FillupfirstCSGw/watertocheckfloatshoetoverifyit’sunblocked.ThenrunCSGasprocedure,payattentiontofillupmudandDVPFRposition.

d）AfterCSGrunningtobottom,connectlandingjoint&landingbaseontotheCSGstringonrigfloor.Connectbottomflangeonthelandingbaseto18-5/8”CSG.Extracareshouldbegiventosideoutletsoflandingbase,ensuringtheirdirection/theypoint-E-W.Wheninstallinggatevalve,thehandwheelpointsnorth.ThisisanimmutableruleofSaudiAramco.

e）M/Ucirculationheadinv-doorinadvance.Lineuptocirculateincaseofencounteringdrag.Afterreachingbottom,circulateasrequired（CSGinsidevolume）.Connectcementinglines.Preparefirststagecementwithnecessaryhosesandbends.

f）Checkbackflowafterfirststagecementing,dropplug（orbomb）,pumpittosetDV.ThenCONTpumpingtoopencirculationport.Prepareforsecondstagecementing.

g）Circulateexcesswater&slurrytopitw/suctionpump.CONTpumpinguntilclearinannulus.Load/releaseclosingplug.DisplaceslurrytocloseDVtool.

Note:

AssigncertainpersontoobservereturningandnotifyDrillerintimetorecordandcalculateremainedreplacementvolumeandreturnedslurry.

10.N/UandTestBOP

a）Aftercementing,weldthebottomflangeoflandingbaseand18-5/8”CSG,blankoff4”port.NippleupBOPs.PrepareP.T.

b）AfternipplingupBOPs,functiontestandRIHtestcup（cuptester）.OneortwostandsHWDPbelowcup.Therearetwotypesofcup:

FMCandGRAY.Theusagedependsoncasinghead.

c）Aramcopressureteststandard:

Lowpressure-300psi;highPressure-2500psi（2000psiforannularpreventer）.Holdpressurefor5or10min（basedonForemaninstruction）.Testannular,manualgatevalvesondrillingspool&HCR.Checkvalveonkilllineside,chokeline,blindram,piperamandcasinghead（w/2000psi）,emergencykillline,chokemanifold,upperandlowerKellycock,insideBOP,FOSVetc.

d）Testproceduresandmethods:

Connectpressuretestingtoolsandlinesasperfigure1.Circulateandfillupw/waterabovethecup,thenstartP.T.

Note:

1）Whentestingblindram,backbreaksinglefromthecup,thenpumptestfromchokeline.

2）WhentestingCSGheadw/cuptester,runcupatthe60ftbelowCSGhead,thenpumppressurefromchokeorkillline.

3）UsespecialtestingsubtotestKellycock,insideBOPetc.

4）Whentestingchokemanifold,shoulddofromoutsidetoinside.

5）It’sforbiddentoreleasepressurefromwellheadaytime.

6）Aftercompletionthetesting,fillupthetestingsheet,handoveracopytoforemanwiththepressurecurvechart.TheoriginaldocumentssignedbyForemanshouldbekeptbyToolpusher.

12-1/4”Section（三开）

Drill12-1/4″Hole

1.Preparebit,reamer,bitbreaker,andBHA.

2.PU/MUBHAasfollows:

Bit+NBRR（withfloat+seat）+8-1/4″DC×2+reamer+8-1/4″DC×15+jar+8-1/4″DC×2+X.O+5″HWDP+5″DP

3.RIHandcheckstringinventory/depth.Recorddepthofcompression（thedepthofDVPKRorsomeremainedplug）.Pressuretestw/waterto1500Psi（or300PsiasForemanrequired）.DrillplugandDVPKRwiththeparameterasfollows:

20～30KLB,70RPMand80～90spmw/singlepump.

AfterdrillingoutofDV,pressuretestforcasingagain.

ContinueRIHtotagcementandchecktallytoconfirmdepthandrecordit.

Drillplugandaccessoriestill15′upperofFCandretest.

ContdrillingplugandFS,replacewaterw/mud.

4.AfterdrillingoutFSandcement,drill12-1/4″holewiththesameparametersthatdrillingtheplugtillreamerisoutofshoe.Thendrillwiththefollowingparameters:

45～50KLB,105～110RPMand65spmwithdoublepump.

5.12-1/4″section（2300～4100FT）isthemostcomplicatedintervalwhichincludedWASIAandSHUAIBA.

A.WASIAisawater-bearingformationandsomeshaleformationwillexpandafterabsorbingwaterfrom2600～3500FT.Usemudnotwatertodrillthissection.TheROPwillbeveryhighwit