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简介：ThispaperstudiesthecurrentavailableoptionsforfloatingproductionplatformsindevelopingdeepwateroilfieldsandthepotentialdevelopmentmodelsoffutureoilandgasexplorationintheSouthChinaSea.Adetailedreviewofcurrentdeepwaterplatformsworldwidewasperformedthroughtheexamplesofindustryprojects,andtheprosandconsofeachplatformarediscussed.Fourtypesofplatformsarecurrentlyusedforthedeepwaterdevelopment：tensionlegplatform,Spar,semi-submersibleplatform,andthefloatingproductionsystemoffloading.Amongthese,theTLPandSparcanbeusedfordrytreeapplications,andhavegainedpopularityinrecentyears.Thedrytreeapplicationenablestheextensionofthedrillingapplicationforfixedplatformsintofloatingsystems,andgreatlyreducesthecostandcomplexityofthesubseaoperation.Newlybuiltwettreesemi-submersibleproductionplatformsforultradeepwaterarealsogettingtheirapplication,mainlyduetothemuchneededpayloadfordeepwatermakingtheconversionoftheolddrillingsemi-submersibleplatformsimpossible.Theseplatformshavebeenusedindifferentfieldsaroundtheworldfordifferentenvironments;eachhasitsownadvantagesanddisadvantages.Therearemanychallengeswiththesuccessfuluseofthesefloatingplatforms.Alotoflessonshavebeenlearnedandextensiveexperienceaccumulatedthroughthemanyprojectapplications.Keytechnologiesarebeingreviewedforthesuccessfuluseoffloatingplatformsforfielddevelopment,andpotentialfuturedevelopmentneedsarebeingdiscussed.SomeofthetechnologiesandexperienceofplatformapplicationscanbewellusedforthedevelopmentoftheSouthChinaSeaoilandgasfield.

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简介：疲劳裂缝和疲劳损坏是为轮船的重要的期并且近海结构很长时间。在最后十年，与在壳结构和逐渐地大的轮船尺寸的更高张力的钢的介绍，然而，更大的注意应该被给予使问题疲劳。的大多数研究焦点更容易存取轮船的疲劳力量。另外，主要分类社会已经释放了他们的疲劳评价笔记。由于影响疲劳表演的因素的复杂性，然而从货物，不同压力部件的联合，本地结构细节的集中上的压力，工具压力，和腐蚀剂环境装载例如波浪并且迫使，有有改变分类社会的不同说明，从不同疲劳评价方法导致不同结果。这篇论文证实DetNorskeVeritas(DNV)分类笔记使对解释疲劳评价的过程的轮船结构的评价疲劳并且简化了方法。最后，疲劳分析被一艘真实轮船的使用数据执行，结果的可靠性被估计。