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20043()()():,,2004,23(6)2225,,,,,,1,,,,,,,2a,,,,,,1,:,2002,20022,SestakJ:Start2upofGelledCrudeOilPipeline,J.ofPipelines,1987,6.3,CawkwellMG:CharacterizationofCanadianArcticThixotropicGelledCrudeOilsUtilizinganEight2parameterModel,J.ofPipelines,1989,7.(:2003206212):3610500,2001;:(028)8303008922,u=u(a,)ai,,,,:E[u(ai,)]=u(ai,1)pi1++u(ai,j)pij+u(ai,J)piJ(1):Eu(ai)=E[u(ai,)](2),C=(a,)pij,ai,Cijpij=p(ai,j),pi1+pi2++piJ=1,J,()aij,:uij=u(ai,j)i=1,2,,Ij=1,2,,JI;J123,ai,:ui1=u(ai,1)ui2=u(ai,2)ui3=u(ai,3)ai,:Eu(ai)=E[u(ai,)]=u(ai,1)pi1+u(ai,2)pi2+u(ai,3)pi3(3),,,,,,,,33(1),c,(2),n,,(3)(),v,(),:u=u(c,n,v)(4),2(1)1,3cnv,,:=c+nC1+vC2(5)C1;C2,:u=u()(6)(2)2,,,3,(1):u(c,n,v)=q1u1(c)+q2u2(n)+q3u3(v)(7)u1(c);u2(n);u3(v);q1q2q333,,q1+q2+q3=1,4132236:,11,M1M2,M1M2,,3IPi,Pi=(pi1,Ci1;pi2Ci2;pi3,Ci3),Ci1pi1,Ci2pi2,Ci3pi3Pi,:(1),P1,P2,01,P1+(1-)P2(2),,Ci2Ci3,pi2pi3,Pi=(1,Ci1;0,Ci2;0,Ci3)=(1,Ci1)u,,,P1P2,P1P2,u(P1)u(P2);,P1P2,01,:u(P1+(1-)P2)=u(P1)+(1-)u(P2)(8),u12,5,,C1,,pC2,1-pC3,,C1(p,C2;1-p,C3),:C1pC2+(1-p)C3(9)C1C2,u(C1)=1,u(C2)=0,C3(1)C3,C1C3C2,(0,1)p1,C3(p1,C1;1-p1,C2),:C3p1C1+(1-p1)C2(10):u(C3)=p1u(C1)+(1-p1)u(C2)=p1(11)(2)C3,C1C2C3,(0,1)p2,:C2p2C1+(1-p2)C3(12):u(C2)=p2u(C1)+(1-p2)u(C3)=0(13)u(C3)=p21-p2(14)(3)C3,C3C1C2,(0,1)p3,:C1p3C3+(1-p3)C2(15):u(C1)=p3u(C3)+(1-p3)u(C2)=0(16)u(C3)=1p3(17)(4),C3C4C5,C3C4C5,(0,1)p,:C4pC3+(1-p)C5(18)u(C4)=pu(C3)+(1-p)u(C5)(19),,,,,,422004,,,,,C1C2,u(C1)=1u(C2)=0,(0,1),,,,,C,,,2622(a),u1(C),u(EC)E(u(C)),;u3(C),u(EC)E(u(C)),u1(C),u3(C),u2(C),,(2(b)),[C3,C1],,[C1,C3],,,,(7),(3),,(1),,,,,,(2)3,,1,,2,3(3),1001001,()(4),,,,1,:,,2000,19(7)2,:,(),19943,MaherANessimandMarkJStephens:Risk2basedOptimizationofPipelineIntegrityMaintenance,1995OMAE2VolumeII,SafetyandRe2liabilityASME19954,:,(),19875,:,(),19886,:,(),2000(:2003205226):52236:DESIGN&CALCULATIONZHANGWeizhi,CUIXinetal:AnalysisandCalculationfortheUnstablePerformanceofHeavyOilPipeline,OGST,2004,23(6)1417.Theperformanceofheavyoilpipelineandtheprinciplefordeterminingoiltransmissiontemperatureandpipelineworkscopeareaccountedforinthispaperbyperforminghydraulicandthermodynamiccalculationforheavyoilpipeline,andthelimitvaluedataofpipelineareobtainedbygoldensectionmethod.Thus,thedesignbasisforprocessparametersofheavyoilpipelinecanbeobtained.SubjectHeadings:heavyoilpipeline,unstableoperation,limitvalue,frictionalresistance,goldensectionmethod,calculationSUNWeiandZHANGGuozhong:OilTankCapacityCalculationonBatchTransportatiOnPipeline,OGST,2004,23(6)1719.ThemistakesofformulaefortheoiltankcapacitycalculationofoilbatchtransportationpipelineinSovietUnionspe2cializedtextbookarepointedoutandanewalgorithmisinducedbymeansofanalyzinganddeducing.Inthisformulae,thetimefornotransportingofoneproductinthesequence(exceptforthetwoendsproducts)isdividedintotwoparts,whilethetankcapacityfortheproductshouldbeconsideredwiththelongerpart.Theexampleindicatesthatthetradition2alcomputationisimproper.Thenewideaandformulaeputforwardinthispaperhaveimportantmeaningforoptimizationofdesignandtransportationinproductpipeline.SubjectHeadings:productspipeline,batchtransportation,tankcapacity,calculationCHENHongjian,ZHANGFanetal:TheCalculationofThixotropicWaxyCrudeOilRestart,OGST,2004,23(6)2022.Accordingtothecharacteristicsofthixotropicstructureofwaxycrudeoil,anewthixotropicmodelisdevelopedonthebasisofHouskaSmodelandexperimentdata.Andrestartsoftwareofthixotropicliquidsisprogrammed.Comparingtothemodelandcalculationresultspublished,ourcalculationmodelhassomeadvantagesandthecalculationresultsaremorebetterfitstheexperimentaldata.SubjectHeadings:waxycrude,thixotropy,restart,pressure,calculationCHENLiqiong,FANZhigangetal:UtilityFunctionApplyingintheOptimizationofPipelineIntegrityMainte2nance,OGST,2004,23(6)2225.Utilityfunctionisputforwardforassessingthepipelinefailuresequentinordertooptimizethedecision-makingofthepipelineintegritymaintenance.Firstly,theutilityfunctionsignificationisexplained.Insuccession,thedecision-markingtreeofpipelineintegritymaintenanceiserectedandthemeasuresandstepsofhowtoconfineandconstituteutili2tyfunctionaresetforth.Finally,someissuesaboututilityfunctionareemphasized.SubjectHeadings:oilandgaspipeline,integritymaintenance,thedecision-markingtree,utilityfunction,applica2tion3