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ProjectName:DETAILDESIGNOFPL19-3OILFIELD1/2/3/8/9AREASECONDARYADJUSTMENTPROJECTDocumentNo:DD-SPC-SP-SPST-0001Rev1Title:SPECIFICATIONFORDESIGNBASISOFSUBSEAPIPELINE2025221JOBNO24ZB-DD01Page2of36CONTENTS1BACKGROUND411GENERAL412DEFINITIONS513ABBREVIATIONS614SCOPEOFWORK72REGULATIONS,STANDARDS/CODESANDREFERENCEDOCUMENTS921REGULATIONS922STANDARDS/CODES923REFERENCEDOCUMENTS103PIPELINEDESIGNCONDITION1131PIPELINECONFIGURATION1132RISER/SPOOLPIECECONFIGURATION1133PIPELINEANDRISERSYSTEMDESIGNDATA134ENVIRONMENTALDATA1741ROUTINGREFERENCEPOINTS1742ENVIRONMENTALCONDITION1743TEMPERATURE1944MARINEGROWTH1945EARTHQUAKEACCELERATION2046ICEDATA2047PIPELINEROUTECHARACTERISTIC2048SOILDATA2049PLATFORMMOVEMENT215DESIGN2251GENERAL2252PIPELINEMATERIAL2253PIPELINESIZE2254PIPELINESTRUCTURE2255PIPELINEFLANGES2256PIPELINEROUTING2257PROTECTION2358TIE-INSPOOLS2359DESIGNFACTORS236IN-PLACEANALYSIS2561WALLTHICKNESSANALYSIS2562IN-PLACESTRENGTHANALYSIS2563EXPANSIONANALYSIS25ProjectName:DETAILDESIGNOFPL19-3OILFIELD1/2/3/8/9AREASECONDARYADJUSTMENTPROJECTDocumentNo:DD-SPC-SP-SPST-0001Rev1Title:SPECIFICATIONFORDESIGNBASISOFSUBSEAPIPELINE2025221JOBNO24ZB-DD01Page3of3664PIPELINESEISMICANALYSIS2665PIPELINEALLOWABLESPANANALYSIS267PIPELINEON-BOTTOMSTABILITYANALYSIS2771LATERALSTABILITYANALYSIS2772VERTICALSTABILITYANALYSIS278RISERANDSPOOLANALYSIS2881COMBINATIONCASE2882COMPUTERPROGRAM289INSTALLATIONANALYSIS3091NORMALLAYING3092TRENCHING3010UPHEAVALBUCKLINGANALYSIS3111SPOOLPIECESLIFTINGANALYSIS3212DROPOBJECTANALYSIS33APPENDIXA：THEPIPELINESGENERALLAYOUT34APPENDIXB：SOILBORINGSLAYOUT35APPENDIXC：PLATFORMMOVEMENTDATAS36ProjectName:DETAILDESIGNOFPL19-3OILFIELD1/2/3/8/9AREASECONDARYADJUSTMENTPROJECTDocumentNo:DD-SPC-SP-SPST-0001Rev1Title:SPECIFICATIONFORDESIGNBASISOFSUBSEAPIPELINE2025221JOBNO24ZB-DD01Page4of361BACKGROUND11GENERALThePL19-3oilfield1/2/3/8/9areasecondaryadjustmentprojectisajointdevelopmentprojectbetweenChinaNationalOffshoreOilCorporation,LTD(CNOOC)andConocoPhillipsChinaInc(COPC)ThefieldislocatedinBohaiBayoffthenorth-easterncoastofthePeople’sRepublicofChina(PRC)Thewaterdepthisapproximately27metersThedevelopmentengineeringprojectconsistsoftwonewly-builtwellheadplatformswith4legs(PL19-3WHPUandPL19-3WHPR),anewly-built12”,15kmdoublelayerinsulatedsteelsubseamultiphasepipeline,anewly-built10”,15kmnon-insulatedsteelwaterinjectionsubseapipeline,anewly-built19kmsubseacable,7externalwellslotsmodificationontheexistingPL19-3WHPG,checkandmodificationontheexistingfacilitiesincludingPL19-3WHPD,PL19-3WHPE,PL19-3CEPBandPL19-3RUPWellfluidfromPL19-3WHPUistransportedtoPL19-3WHPGviasubseapipelineandcombinedwithwellfluidfromWHPGexistingwellsandnewexternalwellsWellfluidsfromPL19-3WHPRistransportedtoPL19-3WHPEbybridgepipelineandcombinedwithwellfluidsfromPL19-3WHPEAllthewellfluidistransportedtoCEPBandFPSOforprocessing,storageandoffloadingTheinjectionwaterofPL19-3WHPUandPL19-3WHPRaresuppliedbythequalifiedproductionwaterfromPENGBOFPSOandPL19-3CEPB,transportedbytheexistingandnewly-builtwaterinjectionsubseapipelinesTheelectricalpowershallbesuppliedbytheexistinggasturbinegeneratorsatearlytime,thenshallbesuppliedbyPL19-3EPPwhentheshorepowerprojectisinproductionElectricalpowerfromPL19-3WHPDshallbetransportedtoPL19-3WHPUviathenewly-builtsubseacable,andelectricalpowerfromPL19-3WHPEshallbetransportedtoPL19-3WHPRviacablebybridgeThemainfacilitiesofthisprojectareshownasbelowTwonew-builtwellheadplatforms,whichare:?wellheadplatformWHPUwith28wellslots?wellheadplatformWHPRwith28wellslotsconnectedtoWHPEbybridgeTwonew-builtsubseapipelines:?WHPUtoWHPGsubseamultiphasepipeline,12”/16”,15km