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1、第16卷第3期船舶力學(xué)Vol·16No·32012年3月一—JournalofShilriMechanics—Mar.2012一————————————————————————————————————————————————————————————————————一一ArticleID:1007—7294(2012)03—0226-10ParametricInfluenceAnalysesforUmbilicalInstallationinDeepwaterWANGAi-jun,YANGHe-zhen(StateKeyLab。rat。ry。f
2、OceanEngineering,School。fNavalArchitecture,OceanandCiVilEngineering,ShanghaiJiaoTongUniversity,Shanghai200240,China)Abstract:Thedeepwaterinstallationbecomesacriticalissueforumbilical.Theeffectsofdifferentbuovancvmoduledeplovmerits(differentsizes,lengthanddeploymentpositiono
3、fbuoyancymodule)onumbilicalinstallationarediscussedindetail.Andtheeffectsofwaveandcurrentdirectionsarealsostudied.First,afreehangingcatenaryumbilicalmodelisconstructedOnthebasisofthecatenaryeauation.Thenthedynamicumbilicalinstallationmodelisbuiltupbyapplyingbuoyancyandother
4、loads.Accordingtothecomparisonandanalysis,itisfoundthatthebuoyancymoduledeploymentpro’cesshasgreatefkctonumbilicalandSOdothewaveandcurrentdirections.Giventhesafetyofstruc‘tures,aIItheseparametersshouldbepaidattentiontoduringumbilicalinstallationindeepwater·Keywords:umbilica
5、l;deepwaterinstallation;buoyancymodulesCI。Cnumber:P751Documentcode:A1IntroductionTheumbilicalisacriticalcomponentoffloatingproductionsystems.Itprovideschemicalinjection。electricalpower,hydraulicsupplyandsignalstothesubseacomponentsforthecon—trolofsubseaoperations.Dynamicumb
6、ilicalthatconnectingsubseawellstofloatingprocessia—cilitiesisacritiealiteminsubseaproductionsystems.Itwillbesubjecttohighexternalhydro—staticDressureandenvironmentalloadsduringtheinstallationprocess.Astheoffshoreexplo’rationandproductionisincreasinglymovingintodeeperwaterre
7、gion,withaccompanyingin-creaseininstallationloads,theumbilicalinstallationfacesmorechallenges.Increasedweightofumbilicalwouldcauseextremelyhightoptension.Waveandcurrentinducedmotionsareli—abletointroducehighstressintheumbilical,particularlyatthetouchdownzoneandhang—offposit
8、ion.Highstressinthetouch—downregioncanbereducedbyinstallingtheumbilicalwithbuovanc