Hydrocarbon Exploration in the South Yellow Sea Based on Airborne Gravity, China-中国期刊网

摘要 DifferencesbetweentheCenozoicandpre-CenozoicstrataandstructuresinthemiddlesouthSouthYellowSeaareanalyzedusinghigh-resolutionairbornegravitydatacombinedwithdatafromoffshorewells,seismicexplorationandtheregionalgeologicalbackground,usingforwardandinversemethods.WediscusswhyhydrocarbonexplorationhassofarfailedintheSouthYellowSea,andputforwardalternativefutureexplorationplans.TheresultsshowthattherearethickCenozoicstrataoverJurassic–CretaceouscontinentalstratainthesouthernbasinoftheSouthYellowSea,contrastedwiththickMid-Paleozoicmarinestratapreservedinthemiddleupliftarea.Inthemid-southernSouthYellowSea,airborneBouguergravityanomaliesarefragmentizedwithscatteredlocalanomalies.ManytensilenormalfaultsandminorfaultblocksoccurintheCenozoicstrata.Incontrast,reversefaultsandnappestructuresarefoundinpre-Cenozoicstrata.Theessentialreasonsforthelackofabreakthroughinhydrocarbonexplorationarethecomplexityofgeologicalstructures,hydrocarbonaccumulationenvironments,seismic-geologicconditions,andthedifficultyofinterpretingandunderstandingthesefeatures,ratherthananimbalanceofexplorationframework.HydrocarbonexplorationshouldbetargetedatMid-Cenozoiccontinentalstrata,especiallyofPaleogeneage,inthemiddletosouthernpartsoftheSouthYellowSea.SpecialattentionshouldbepaidtothefavorablestructuralbeltsSYI1,SYI2,SYI3andSYI4inthesouthernbasinoftheSouthYellowSea,wheredetailedseismicexplorationordrillingshouldbecarriedout.AttentionshouldalsobegiventoMid-PaleozoicmarinestratainthemiddleupliftareaoftheSouthYellowSea.Keystrategiesthatcouldleadtoahydrocarbonexplorationbreakthroughareimprovingexplorationresolution,conductingdetailedstudiesoffinestructures,andaccuratelylocatingminorstructures.

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Hydrocarbon Exploration in the South Yellow Sea Based on Airborne Gravity, China

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Hydrocarbon Exploration in the South Yellow Sea Based on Airborne Gravity, China

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