36579.海拉爾盆地貝爾凹陷大磨拐河組層序地層學研究

1、北京科技大學碩士學位論文海拉爾盆地貝爾凹陷大磨拐河組層序地層學研究姓名：房金偉申請學位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導教師：徐九華20091220北京科技大學碩士學位論文StudyonSequenceStratigraphyofDMGHTerminBeirDepression，HailarBasinAbstractThepaperisfocusedonthestudyonDMGHtermstrataofBeirDepression，H

2、ailarBasin，basedonsequencestratigraphyandsedimentarytheoryMakingfulluseofcore，loggingandseismicdatasequencestratigraphyflameisestablishedMoreovercombinedwiⅡlstructuralgeologyfeatureofBeirDepression，spatialdistributionofs

3、edimentaryfaciesandsedimentarysystems，thereservoirgrowthfeatureandthecombinationofoilsourcebed，reservoir，caprockofDMGHformationarestudiedHailarBasinisafaultdepressionattheearlyformingstage，andbecomingadepressionattheendo

4、fNantunstageControlledbythestructuralsedimentarysettingasetofstratafromPalaeozoietoQuaternaryhasbeendepositedinBeirdepression111estratafloraJurassictoCretaceousisdividedintoninestratigraphicsequencesinthearticle，theseque

5、nceboundaryofsequence4andsequence5(equivalenttoDamoguaihegroup)Canbeidentifiedfromthewell，loggingandseismicdataStudieshaveshownthat：welldatafeaturesmainlyincludetheancientsoil，therootsoil，irondisseminated，plantcarbondust

6、ordebris，theriverbedstrandedconglomerate，calcareousnodules，orcalciumjunctionlayerandturbidite，erosionsurfaceincotingdataSequenceboundarymainlymarkedbytheformoftheterminationonseismicreflection(truncationonlap，downlap)Low

7、standfansandlowstandwedgesformedinlowstandsystemtractsofSq4(thatisbottomofDamoguaiheformation)anddeepwaterturbiditefansdeposedinlatetransgressivesystemtractandearlyhi曲standsystemtractarethemajorreservoirwithgoodphysicalc

8、haracteristiesMudstonedepositedindeepwaterenvoirmentofSq5isthebetterregionalsealingbedThedeeplaketurbiditeregionallydepositedinSq5(thatisupperlayerofDamoguaiheformation)withbetterfeatureisalsogoodreservoirInhighstandsyst

9、emtractdeltaplainanddeltafrontarebecomingthemainsedimentarybodiesAttheendofSq5，sedimentaryenvironmentconvertedtofluvialfaciesfromlimneticfaciesOnthebasisofsequenceanalysis，sedimentaryfaciesanalysisandsedimentaryenvironme