PIPEPHASE9.3_tutorial

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1、Chapter5TutorialIntroductionThischapterpresentsthestep-by-stepprocedurerequiredfortheoptimizationofanoff-linepipelinedesign.Inthefirstpartofthistutorial,youwilllookattheoptimaldesignbasedonlyoncapitalcostconsiderations.Then,youwillincludetheoperatingcostsoverthelifetimeofthe

2、pipeline(10years)andexaminetheeffecttheoperatingcostshaveontheoveralldesignstrategy.ProblemDescriptionInthissimulation,apipelineisdesignedtodelivergasatarateof1200MMSCFDataminimumpressureof900psifromtwooffshorefields.Table5-1andTable5-2provideadditionalprocessdetailsincludin

3、gpipingandcompressorcapitalexpenditures.Table5-1:ProcessConditionsOffshoreFieldADistancefromprocessingplant,miles200Wellheadpressure,psi2000OffshoreFieldBDistancefromfieldA,miles180Wellheadpressure,psi2000Table5-2:PipelineandCompressorCapitalCostsPipelineCost/mile$0.70MM/inc

4、hIDCompressorCost/1000hP$4.66MMPIPEPHASE9.3GettingStartedGuide5-1Theoverallcapitalcostisthesumofthecostofpurchasingandlayingpipeandpurchasingthecompressors.PipeCosts(MM$)=CostofPipefromField1+CostofPipefromField2=0.70*200*IDPipe1+0.70*180*IDPipe2=140*IDPipe1+126*IDPipe2Compr

5、essorCost(MM$)=4.66E-3*wCompr1+4.66E-3*wCompr2TheoverallcapitalcostisthereforealinearfunctionoftheIDofthetwopipelinesegmentsandcompressorpower:CapitalCost=140*IDPipe1+126*IDPipe2+4.66E-3*wCompr1+4.66E-3*wCompr2PIPEPHASEoptimizesthedesigntominimizetheoverallcapitalcostsbyvary

6、ingthepipediametersandthesizesofthecompressorsatthetwoplatforms.Apartfromthedeliverytarget,therearethreeadditionaldesignandoperatingconstraintsthatmustbetakenintoconsideration:■Pipesizesareavailableonlyinsizes24"-40"withamaximumoperatingpressureof2475psi.■Duetolimitedspaceon

7、eachplatform,themaximumcapacityofeachcompressoris50000HP.■Bothpipelinesectionsmustbebuiltasthecapacityoftheplat-formforfieldAisinadequatetomeettheoveralldeliveryrequirement.TheoverallnetworkisshowninFigure5-1.5-2TutorialFigure5-1:TutorialProblemBuildingtheNetworkFirst,youmus

8、topenanewproject:➤SelecttheNewoptionfromtheFilemenu.TheWindowsexplorerdialo