FPSO內(nèi)轉(zhuǎn)塔式單點(diǎn)系泊浮筒海上安裝設(shè)計(jì)

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Offshore installation design of FPSO internal turret single-point mooring buoy

YANGKun，CHENXiaodong，YANGSheng，ZHANGYifan，XUJianxin CNOOC OffshoreEngineering SolutionsCo.，Ltd.， Shenzhen518067，China

Abstract：Afiniteelementanalysiscombiningstaticanddynamicapproaches isanimportantpartof theschemedesignforfshore instalationandcostructionofintealtuetsinglpintmoingbuos.WithnintealturrtsingleontmoingbuoyofPayu Oilfield inthe South China Seaasaresearchoject，theOrcaFlexsoftwarewasemployed tosimulatethewholeprocessoffshore installtionofthebuoy.Byanalyzingtheliftingofthesingle-pointbuoythroughthesplashzone，themaximumalowableoperation windowwasobtained.Throughstabilityasessmentofthesingle-pointbuoyfrelyfloatingonthewatersurface，thesignificantwave heightlimitforpersonnelworkingontetopofthebuoyasdesigned，andthedesignofclumpweightsforstabilitycontrolandtheir connectinglockingdeviceswasverifiedtobereasonableandfeasible.Thesinkinganalysisof thesingle-pointbuoyindicatedthatthe designofclumpweightsforsinkingandtheirconmectinglockingdevics asrationalandfeasible.Thehook-upprocessanalysisofthe mooringlegshowedthatafterthelegwashookedup，approximatelyhalfoftheloadontheriggingwastransferrdtotheleg.Thehookupprocessanalysisofdynamiccablesrevealedthat tesingle-pointbuoysankbyapproximately10metersfollwingthecablehookup. Theabove-mentionedsimulationanalysesshowthattheweightoftwoclumpweightsandthelengthofconectinglockingdevicessuit therequirementsforonstruction.Tepropoedlimitsforfsoreistalltionaresuitablefortemaximumallowableoperationwindow， and the designed scheme for offshore installation and construction is feasible and safe.

KeyWords：single-point buoy; installation scheme; OrcaFlex; maximum alowable seastate; stability; load transfer

單點(diǎn)系泊系統(tǒng)因其風(fēng)向標(biāo)效應(yīng)能夠適應(yīng)惡劣海況，在我國(guó)南海、歐洲北海和墨西哥灣的浮式生產(chǎn)儲(chǔ)油卸油裝置（FloatingProduction Storage andOffloading，F(xiàn)PSO）中得到廣泛應(yīng)用[1-3]。（剩余7650字）