20827.鄂爾多斯盆地榆林地區(qū)大牛地氣田奧陶系馬家溝組古巖溶儲(chǔ)層特征

1、西安石油大學(xué)碩士學(xué)位論文鄂爾多斯盆地榆林地區(qū)大牛地氣田奧陶系馬家溝組古巖溶儲(chǔ)層特征姓名：趙淑平申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：礦物學(xué)、巖石學(xué)、礦床學(xué)指導(dǎo)教師：王起琮20120610英文摘要Subject：ThechamcteristicsofpalaeokarsticreservoirMajiag叫Fomation，ordoVician，DaniudigasneId，YuLinarea，ordosBasinSpecial時(shí)：Mineralo鼢P

2、etroIo跏MineralDepositGeoIog)，(signatu代)(signatu陽)ABSTRACTBasedontheanalysisofregionalofgeologicbackgroundandcore，sliceandlogging，aswellasgeochemistry，theauthortakeasystemresearchforpetrDlogicalfeatures，geochemistrycharac

3、teristics，porestructure，the夠peofkarst，zoneofkarSt，diagenesisofpalaeokarsticresen，oirMajiagouFo咖ation，Ordovician，DaniudigasfieldTheautherreconStmctthet)，peofkarsticpalaeogeomo叩hologyaccordingtoresidualthicknessmemodandimp

4、ressionmethodTheaumeralsoanalysecontrDlfactorsaboutpalaeokarstandcontI0lfactorsaboutpalaeokarsticreserVoirComprchensiVeconsiderationkarsticpalaeogeomo叩hologyandthedistributionofdolomite，theautherforecastthebestareaResult

5、sshowed：Daniudigasneld，mainlywithkarstbrecciasandmicriticdolomite，deVelopingcaVesandfacturesandinte唱ranularpores，carbonandoxygenisotopehasobViouslynegatiVebias，the87Sr／86srincreased；thepaIaeokarstinStudyareaisdiVidedint0

6、syngenesiskarst，hype唱enekarstandburialkarst，andthemostimportantishype唱enekarst；karstzoneisdiVidedintoVerticaIVadoseandIeVelmnofrzone，thekarstmoredeVelopmentinleVelrunoffzone；t11epalaeokarsticreser、，oirexperiencedseawater

7、，freshwaterandburieddiageneticenVironment，dissolutionandrefluxdolomitizationareconstructiVetothereservoirporcdeVelopment，whilededoiomitizationandcompaction—prcssuresolutionarcdestmctive；theintemalfactors，suchasproperties

8、ofrocks，sedimenta巧facies，geologicalstructure，etc，areconnolf犯torsforthedevelopmentofkarst，theextemalfactor，suchasclimate，hydrogeologicalconditions，etec，arethebasicconditionsforthedeVelopmentofkarst；thereare3t)，pesofthesec

9、ondleVel，inwhich，thekarsticrampreceiVedstrongkarsti6cation；palacokarSticreser、，oirmainlycon臼01ledbypropertiesofrocks，geologicalstructureandhydmdynamicfactors；therethreebestareasbasedontheanalysesofkarsticpalaeogeomo印holo