26079.鄂爾多斯盆地三疊系延長組沉積體系及含油性研究

1、成都理工大學(xué)博士學(xué)位論文鄂爾多斯盆地三疊系延長組沉積體系及含油性研究姓名：楊華申請學(xué)位級別：博士專業(yè)：古生物學(xué)與地層學(xué)（含：古人類學(xué)）指導(dǎo)教師：陳洪德20041101DepositionSystemandOilAccumulationResearchofYanchangFormationinTriassic，OrdosBasinAbstractThispaperinvestigatestheYanchangformationinTria

2、ssicsystemofOrdosbasin，usingtheoriesassedimentologypetroleumgeologygeophysics，eta1，basedonabundantoutcropsections，welldrillingandseismicdataThispaperalsosystemlyinvestigatesthecharacteristicsofdepositionsystemsinOrdosbas

3、in，sedimentarymicrofaciesoftheleadingpayformations，sandbodiesanditsdistributions，andreservoircharacteristics，adoptingthetechniquemethodsofacademicresearchcombinedwithpracticeresearchandmacroexaminationscombinedwithmicroe

4、xaminationsFromtheanalysisofpaleoeurrentdatalightmineralsdataandheavymineralsdataofOrdosbasin’Sfringe，weconcludethatmaindepositionsystemsdevelopedinYanchangFormationincludenortheastandsouthwestdepositionsystemThedistribu

5、tionsofthesandbodiesarecontrolledbydepositionsystemSoutheastdepositionsystem’Ssandbodies’configurationthathavelowcomponentandtexturalmaturitypresentsabandshapeofeastwestandnortheastsouthwesttrendfromHuanxiantoZhengningNo

6、rtheastdepositionsystem’ssandbodieswhichhaveagoodcontinu塒presentsanortheastsouthwesttrendintheplaneHavinganoverviewontheevolvementfrommember10tomember1ofYanchangformation，Ordoslacustrinefaciesbasinexpandedgraduallyandthe

7、nshrinkedThesiliciclasticYanchangformationwhichcharacterizedbyfluviallacustrinefaciesWascumulatedintheperiodofcontinuantsaggingandstablesubsidingofOrdosbasinOrdoslacustrinefaciesbasinexpandedtoitsheightatmember7stage，The

8、n，thebasincalnetoshrinkingastheeontinuantinfillingoffluvialThispaperdiscussesthedevelopomentcharacteristic，lithologyandproperitiesofdifferentdeltaofdifferentstage，andanalysesandcontraststheoiinessofdifferentdeltaDeltasan

9、dstoneandtheregionalbigwestleaningmonoclinemakeofabestcombinationBottomland，swampandbightdepositionsabovethesandbodiesmakefortheaccumulationandpreservationofoilandgasTurbiditesatthefrontpageofbraidriverdeltasandbodiesand

10、fandeltafrontsandbodiesarefavorablereserviorsforoilandgasaccumulatingAccumulatingpatternsofdifferentdeltadepositionsystemareputforwardBasedonthedepositionsystemsandsandbodiesforcastingcombinedwithaccumulatingrules，potent