42515.鄂爾多斯盆地姬塬地區(qū)延長組油氣成藏特征研究

1、分類號：P57、P58、P6110710—20050897諼步夫海碩士學位論文鄂爾多斯盆地姬塬地區(qū)延長組油氣成藏特征研究導師姓名職稱申請學位級別石彬李榮西副教授碩士學科專業(yè)名稱礦物學巖石學礦床學論文提交日期年月日論文答辯日期年月日學位授予單位長安大學答辯委員會主席學位論文評閱人AbstractJiyuanAreaatthejunctionoftheShanxiGansuNingxiaisthekeyexplorationareatoCh

2、angqingOilfieldinrecentyears，theachievementsofoilandgasexplorationinYanchangFormationareplentiful，oilandgasaccumulationoflowpermeabilityattractspeople’Sattentiononbaseofinclusionsanddiagenesis，themechanismofLowpermeabili

3、tyoilandgasaccumulationWasdiscussedThestudycollectedcoresamples，Grindedintoinclusionslices，identifiedoilandgasinclusionsinslices，proposedcharacteristicsandtimesequenceofinclusionsanddiageneticmineralgenerationidentifiedd

4、ifferentmineralsdiagenesisComponentsbyelectronicprobeandlaserRaman，measuredtemperatureandanalysedlaserRamancomponentsofsingleinclusionBasedongeologicalanalysis，therelationbetweentimesequenceofdiagenetiemineralgenerationa

5、ndoilgasmigrationtoreservoirWasresearched，characteristicsofoilandgasaccumulationoflowpermeabilitywerediscussedThroughcarefulobservationtotheslicesandidentificationofcminerals，itfindthat，diagenesisofsandstonesinreservoirs

6、ofthestudyareaYanchangFormationarecomplex，diageneticmineralsarevaried，anddiagenesishavemultiphaseandmulti—typefeaturesOfthese，themostimportantandobviousfeaturesisthatcementationsweredevelopedinthelatediageneticphase，whic

7、hrepresentationisthatthealbites，crystalcalcitesandmuddycementswereformedanddistributedCrystalCalcitesaregenerallydistributedindoubleDoublecrystalshapeAlbiteshavetwokinds，albitefromplagioclasesandselfalbites，wherelargenum

8、bersofoilandgasinclusionsareseenItshowsthatthecompactionhasgreatinfluencetotheporosityoflow—permeabilityreservoirs，butdoesnotaffectthenormalflowofoilandgas；earlycementationhaslittteinfluencetotheporosityanddosenotaffectt

9、heoilandgasmigration；alotofalbites，calciumsAndsiliceouscementsformedinLatecementation，reservoirseventuallybecametodenselayers，whichaffectedthenormalmigrationofoilandgasTherearethreephasesoffluidinclusionsinNo45reservoirs

10、inYanchangFormationofJiYuanareaThefirstphaseoffluidinclusionsareOrganicfluidinclusionswithhighhomogenizationtemperature，relatedtoPhaseIIfluidinclusionsarenon—fluorescentOrganicfluidinclusions，whichrepresenttheearlyevento