塔里木盆地塔中45-塔中49井区奥陶系碳酸盐岩储层裂缝系统预测研究-矿物学、岩石学、矿床学专业论文.docx

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塔里木盆地塔中45-塔中49井区奥陶系碳酸盐岩储层裂缝系统预测研究-矿物学、岩石学、矿床学专业论文.docx

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塔里木盆地塔中45-塔中49井区奥陶系碳酸盐岩储层裂缝系统预测研究-矿物学、岩石学、矿床学专业论文

AbstarctTarimBasinisthelargestoilandgasbasininChina,severaloil-gasfieldshavebeenfound.Itshowsthattherearehugepotentialsofpetroleumresourcesandexplorationprospects.Ithasbecomethemostimportantstrategybaseofenergy.Inthepre-exploration,ithasconfirmedthatthefractureisthemainlyreservoirsofOrdovicianintheTarimBasin.Therefore,theextentofthedevelopmentoffracturesplaysavitalroleinplaysavitalroleinthepermeabilityreservoirperformance,hydrocarbonmigrationandaccumulation,productionofreservoir.Fracturezoneisareservoirdevelopmentandhydrocarbon accumulationzone.ThestudyhasbeenconcernedforthedistributionandleveloffractureintheOrdoviciancarbonaterocksofTazhong45wellto49wellareas.Basedontheformerinformationandachievements,thecharacteristicsofancienttectonicstressfieldarebeento understandfurther.Throughcharacteristicsofrockfracture,the results oftestscombinedwithtectonicstressfieldanalysistheperiodoftimefractureinit.AndmadethedataoftherockfractureandtheFMIanalyzedstatistically,itcanbefindthelawsoffractureofOrdovicianindifferentlayers,different perspectives, differentperiodoftimesanddifferentdirectionsinstudyareas.Bycomprehensiveanalyzed,thelevelsoffracturearecontrolledbythelithology,thicknessofrock,geotectonic,tectonicstressfieldandect.Thispaperexploresthefracture’sdirections,densityandetcof theOrdoviciancarbonate reservoir inthestudyarea.Thissubjectaretheory-basedonthecontingencyanalysisandthefracturemechanicsofthebreakdownofthecriteria,itusedthethree-dimensionalboundaryelementanalysisofgeomechanicswhichseldomusedinternallynow(Three-DimensionalFractureAnalysisSoftware).Combinationoftheoryandpractice,toestablishedtheforecastingmodelofstructuralfracturewithaindifferentperiodanddifferentlayered.Alargenumberofsimulationshavebeenusedto predictfracture,whichincludedtherelativedensity,therupturedirectionandtwoconjugateshearfracturedirection.Thedensity,directionandtypeofthemulti-phasestructureofthree-dimensionalfracturecanbedisplayedbysoftware.Becomparedthedataofthecore of rocks and FMI, to de