鄂爾多斯盆地鄭莊油區(qū)長6油層組儲層特征及綜合評價.pdf

1、西北大學碩士學位論文鄂爾多斯盆地鄭莊油區(qū)長6油層組儲層特征及綜合評價姓名：王華申請學位級別：碩士專業(yè)：礦產(chǎn)普查與勘探指導教師：柳益群20100611‘ComprehensiveEvaluationandReservoirCharacteristicsofChang6oil—bearingsetsofYanchangFormationinZhengzhuangArea，theOrdosBasinAbstractZhengzhuangare

2、aislocatedinthenorthofShanbeislope，OrdosBasinTheChang一6oilbearingbedsofTriassicYanchangFormationistheresearchhorizonofthispaperApplied謝thcoredescriptionoutcropobservationelectrofaciesanalysis，castthinsectionexaminmion，me

3、rcurypenetrationandotheranalysismethods，comprehensivestudyispursuedforthesedimentaryenvironmentofChang6reservoirinresearcharea，theChang6oilbearingbedissubdividedintoChang61、Chang一62、Chang63、Chang64，wefindthemainsedimenta

4、rysystemisshallowlakesubfacies，platformtypemeanderingriverdeltafrontanddeltaic—plainmeanderingriverdepositiondeltaicplaindistributarychannelsandbodyanddeltaicfrontsubaqueousdistributarychannelsandbodyaremainreservoirsand

5、sTheresearchonflakes、propertiesandSOonshowthatreservoirismainconsistoffinefeldspathicsandstone，Itshowsthatfiediagenesesmainlyincludecompactionpressuresolutioncementationpackingaction，dissolutionandfracturingItisconcluded

6、thatthediageneticevolutionofChang6sandstonehasmainlybeeninthemiddlediageneticstageA—BThemainreserspaceoftheresearchareaisfeldsparandlaumontitesolutionpore，residualpore；theaverageporosityis82％，andtheaveragepermeabilityis0

7、28x10。pm2：TheporosityismainlythekindofdissolutionporosityandthecompositionofporethroatisthefineporewithMicrothroattypeItisalsotypicallowporosityandlowpermeabilityreservoirThereservoirphysicalpropertyofChang一62isthebest，C

8、hang61isthesecondary，Chang一64istheWOrStBytheanalysisofthesedimentaryfaciesandreservoircharacteristics，wefindthatdepositionisthebasicreasoncontrollingofhydrocarbonsourcerocksandreservoirspreading，diagebesismainlydetermine

9、sthereservoirquality：Themechanicalcompactionandcementationwhichresultinprimaryporositylossalmostarethemainfactorcausingthelowestpermeabilityintheearlydiageneticphase；thedissolutionoflaumontiteandfeldsparthatisdissolvedim

10、provestheporosityandpermeabilityThereservoirheterogeneitycontroiesthescaleanddistributionofoilreservoirBasedonthefeaturesofsedimentation、diagenesis、porestructureandpropertydistributioninthisareatoconductcomprehensiveeval