Offshore-Structure General Introduction

《Offshore-Structure General Introduction》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、Lecture15A.1Lecture15A.1OffshoreStructures:GeneralIntroductionConditionCAPEX$/B/DOPEX$/BOBJECTIVE/SCOPEConventionalToidentifythebasicvocabulary,tointroducethemajorconceptsforoffshoreplatformAverage4000-80005structures,andtoexplainwherethebasicstructuralrequirementsfordesi

2、gnaregenerated.MiddleEast500-30001PREREQUISITESNon-Opec3000-120008None.OffshoreSUMMARYNorthSea10000-250005-10Thelecturestartswithapresentationoftheimportanceofoffshorehydro-carbonexploitation,thebasicstepsinthedevelopmentprocess(fromseismicexplorationtoplatformremoval)Dee

3、pwater15000-3500010-15andtheintroductionofthemajorstructuralconcepts(jacket-based,GBS-based,TLP,floating).Themajorcodesareidentified.Worldoilproductionin1988was63millionbarrel/day.ThesefiguresclearlyindicatetheForthefixedplatformconcepts(jacketandGBS),thedifferentexecutio

4、nphasesarebrieflychallengefortheoffshoredesigner:agrowingcontributionisrequiredfromoffshoreexplained:design,fabricationandinstallation.Specialattentionisgiventosomeprinciplesofexploitation,averycapitalintensiveactivity.topsidedesign.Figure1showsthedistributionoftheoilandg

5、asfieldsintheNorthSea,amajorcontributionAbasicintroductiontocostaspectsispresented.totheworldoffshorehydrocarbons.ItalsoindicatestheonshorefieldsinEngland,theNetherlandsandGermany.Finallytermsareintroducedthroughaglossary.1.INTRODUCTIONOffshoreplatformsareconstructedtopro

6、ducethehydrocarbonsoilandgas.Thecontributionofoffshoreoilproductionintheyear1988totheworldenergyconsumptionwas9%andisestimatedtobe24%in2000.Theinvestment(CAPEX)requiredatpresenttoproduceonebarrelofoilperday($/B/D)andtheproductioncosts(OPEX)perbarrelaredepictedinthetablebe

7、low.Page1of32Page2of32Lecture15A.1Lecture15A.12.OFFSHOREPLATFORMS2.1IntroductionofBasicTypesTheoverwhelmingmajorityofplatformsarepiled-jacketwithdeckstructures,allbuiltinsteel(seeSlides1and2).Slide1:Jacketbasedplatform-SouthernsectorNorthSeaSlide2:Jacketbasedplatform-Nort

8、hernsectorNorthSeaPage3of32Page4of32Lecture15A.1Lecture15A.1Asecondmajortypeisthegravityconcrete