海洋钻井平台.ppt

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1、EvolutionofOffshoreDrillingUnitsInstructor28/12/2021ObjectivesAtthecompletionofthistrainingmoduletheengineerwill:ClearlybeabletodefinearigtypewiththeenvironmentitisbestsuitedtoListpro/consforthemanytypesofrigavailable38/12/2021WheredidOffshoreDrillingStart?In1897,38yearsafterCo

2、l.Drake’swell,H.L.WilliamsdrilledawelloffapierintheSantaBarbaraChannel.5yearslatertherewere150wells“offshore”California.By1921thereweresteelproductionpiersthatran½mileoffshoreatRinconandElwoodCalifornia.In1932asteelpierisland(60’x90’with25’airgap)wasbuiltoffshoreCaliforniatosupp

3、ortadrillingrig.In1938afieldwasdiscoveredoffshoreTexasandanotherwellwasdrilledto9,000ft.offawoodenplatformin1941.48/12/2021Continued–WheredidOffshoreDrillingStart?WorldWarIIstoppedalloffshoreactivity.In1945Louisianahadastateleasesaleinthebaysandnearlandopenwaters.Thiswasfollowed

4、bydrillingoffwoodenpierswithaconsiderableamountofcoringfrombarges.In1955CaliforniapassedtheCunningham-ShellActallowingoilandgasproductionoffshoreinstatewaters.Priortothiscoringwasallowed:however,nodrillingcouldbedonethroughhydrocarbonformations.58/12/2021Classesofoffshorerigs2cl

5、assesBottomSupportedFloatingBottomMooredDynamicallyPositioned68/12/2021BottomSupportedRigsSubmersiblesBargedesignColumndesignJack-upsMatsupportedIndependentlegSlottypeCantilevertypePlatformsSteeljacketGravitystructureHybridstructureComplianttowerTensionlegplatform78/12/2021Float

6、ingRigsBottomMooredDrillingtenderDrillingbargeDrillshipConventionallymooredTurretmooredSemi-submersibleSpar/TrussDynamicallyPositionedDrillshipSemi-submersible88/12/2021Submersible:Barge6mwaterSitsonbottomUsedinstillwaters(notrivers)DerrickcanbelevelledDeckmaysitonpostsabovebarg

7、etoallowbargetobefullysubmersed98/12/2021Submersible:IslandFloatsinBallaststositonseabedInsideisfilledtogiveartificialgroundlevelDesignedforiceconditionsSuppliedbyice-breakershipsi.e.Sakhalin,CaspianSea108/12/2021Submersible:Columndesign25mwaterCantileveredderrickTriangularorsqu

8、aredeck118/12/2021“Richmond”SuctionPileConfigur