含硫气井定量风险分析技术标准探讨

3(:2007BAK22B052008BAB37B05):,1963,,,;,:(100007)9:[phone],13910552286E2mail:[e-mail]31,2131.2.3...,2009,29(11):1092111.,,,,,,,DOI:10.3787/j.issn.100020976.2009.11.032,[1](QRA)(),,,,,,20055,[2]11),,,2),3),,4),,2,:;;;,,33.175mg/m3,0.01m3/s[3][4]9012911(individualrisk),,,,,(),(socialrisk),,,,N(F),(),FN(acceptablelevelofrisk),,,3.23.2.1,,,:1):2):,;,,,;3):3.2.2,:,,5a,,20,,Rezaei[5],4.910-4,(ERCB)[6]1,,4.510-4/a1ERCB3.4810-21.0710-34.5310-43.2.3,3.2.3.1[7]:;;;;;;3.2.3.2;;15min[8]3.2.3.31m150mg/m3450mg/m3900mg/m31500mg/m3,8,3m/s0112009110.5m/s3,[9]:Pc(x,y)=0.28C(x,y)3.5dt(1):Pc(x,y)(x,y);C(x,y)(x,y),mg/m3;t,min3.2.4,,RWDI,,(2):RI(x,y)=PBPWPA(x,y)PL(x,y)(2):RI(x,y)(x,y);PB;PW,;PA(x,y)(x,y),;PL(x,y)(x,y),:PL(x,y)=-29.4+1.4ln[Pc(x,y)](3):Pc(x,y)(x,y):RS=PBPWPD(N),N(4):RS;PB;PD(N)ND,;N,FN,10-3/a10-4/a10-5/a10-6/a10-7/a;(ALARP)[10],22()()110-5110-7141,,,[1],,,.[J].,2004,31(2):124.[2],,,.[R].:,2009.[3],,,.AQ20172008[S].:,2009.[4],,,.GB/T280012001[S].:,2002.[5]REZAEIC,MEHAIRYMMKAL,ALMARZOOQIA,etal.Healthsafetyandenvironmentimpactassess2mentforonshoresourgaswells[R]SPE71439.[S.l.]:SPE,2002.[6]IANDOWSETT,LYNDAHOLIZKI.Publicsafetycon2siderationsnearcriticalsourgasfacilities[R].[S.l.]:RWDIWestInc,2004.[7],,.SAFETI[J].,2007,36(6):5242527.[8],,,.AQ20162008[S].:,2009.[9]CanadaAlbertaEnergyandUtilitiesBoard.EUBH2Samodelforcalculatingemergencyresponseandplanningzonesforsourgasfacilities[EB/OL].http:[10],.[J].,2004,30(10):45247.(2009205227)1112911:[phone]Mobile:[phone]E2mail:[e-mail]riaforquantitativeriskanalysisofsourgaswellsWUQing2shan1,2,QIANXin2ming1,GUOZai2fu3(1.CollegeofAerospaceEngineering,BeijingInstituteofTechnology,Beijing100081,China;2.HSEDepartmentofCNPC,Beijing100007,China;3.ChinaAcademyofSafetyScienceandTechnology,Beijing100029,China)NATUR.GASIND.VOLUME29,ISSUE11,pp.1092111,11/25/2009.(ISSN100020976;InChinese)ABSTRACT:WiththedevelopmentofmanysourgasfieldsinsuccessioninChina,itisurgentandnecessarytoestablishtheregulatorycriteriaofsafety,especiallyofquantitativeriskanalysis,forsourgaswells.Therefore,throughanalysisontheprinciple,applicationscope,andtheframeworkoftheestablishmentofthequantitativeriskanalysisonsourgaswells,ameth2odofnumericalstatisticalanalysiswiththereferencevalueswerepresentedontheaccidentalprobabilityofwellblowoutsunderthenationalcondition,aswellasthemethodandrequirementsofconsequenceanalysisafteraccidents,andsomekeytechnicalparametersandmaincontentsofthecalculatingmethodsofquantitativeriskanalysisandtheacceptablerisklevel,etc.Thisprovidesguidancefortheestablishmentofthecriteriaforquantitativeriskanalysisofsourgaswells,andimpelsthequantita2tiveriskevaluationandmanagementtobepossiblyperformedinsourgasfieldsofChina.KEYWORDS:sourgaswell,blowout,quantitativeriskanalysis,individualrisk,socialrisk,acceptablerisklevel,criteriaDOI:10.3787/j.issn.100020976.2009.11.032WUQing2shan(seniorengineer),bornin1963,isstudyingforaPh.Ddegree.Heismainlyengagedinresearchandmanage2mentonexplorationanddevelopmentsafetyofoilandgasfields,HeisnowassistantchiefengineerattheHSEDepartmentofCNPC.Add:No.9,NorthDongzhimenAvenue,DongchengDistrict,Beijing100007,P.R.ChinaTel:[phone]Mobile:[phone]E2mail:[e-mail]lysisofH2Sdiffusioninacatastrophicgasblowoutaccident:AcasestudyofKaiCountyinChongqingLIANZhang2hua1,ZHOUZhao2ming1,WANGHui2,LIXiao2jun1,LINTie2jun1(1.StateKeyLaboratoryforOil&GasReservoirGeologyandExploitation,SouthwestPetroleumUni2versity,Chengdu610500,China;2.DownholeServiceCompany,PetroChinaJilinOilfieldCompany,Songyuan138002,China)NATUR.GASIND.VOLUME29,ISSUE11,pp.1122115,11/25/2009.(ISSN100020976;InChinese)ABSTRACT:Thehigh2pressureblowoutwithH2Sisacomplexproblemofdiffusion,involvinggasmixture,gasmovement,dispersion,andtheinfluencesbythemeterologicalconditionandcomplextopography.Therefore,anumericalsimulationwascarriedoutonthestudyoflarge2spaceflowfieldbytheviablecomputationalfluidsdynamics(CFD).AfiniteelementmethodwasbuiltupontheCFDflowfieldbytheH2Sdiffusionofagasblowoutaccordingtothe3DtopographiccontourdataofthisseriousgasblowoutoccurredinKaiCountyofChongqing.Thenbasedonthemeterologicalconditionwhenthisaccidenthap2pened,afunctionofboundaryintermittentwindspeedwaswrittenwiththefunctionofUDFintheANSYS2Fluentsoftware,amotionequationofLargeEddySimulationadaptabletoairflowforecastwasusedinthemathematicalmodel,andtheCFDfiniteelementmethodandthemathematicalmodelwereinputtotheFluent2CFDsoftwarecalculatortosimulatethelawsofH2Sdif2fusionandmovement.Theresultsfromsimulationwereshownasfollows:(1)HowtheH2Sgasisgatheringandmovinga2round,andhowthegascloudisinfluencedbywinddirectionaroundthiswellfieldinthevalleyarea;(2)Time2spacedistribu2tionplotsofH2SandCH4diffusionwereobtained.Thesesimulationresultsagreewellwiththefieldinvestigationdata,provi2dingtheoreticalbasisforaccidentinvestigation,victimevacuationandriskevaluati