36647.鄂爾多斯西緣奧陶系烴源巖及儲(chǔ)蓋層特征研究

1、西北大學(xué)碩士學(xué)位論文鄂爾多斯西緣奧陶系烴源巖及儲(chǔ)蓋層特征研究姓名：萬(wàn)延周申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：固體地球物理學(xué)指導(dǎo)教師：周立發(fā)20090612AStudyontheCharacteristicsofOrdovicianSourceRocksandReservoirsandCapRocksontheWestMarginoftheOrdosBasinAbstractThewesternmarginoftheOrdosBasinsituate

2、sintheintegrationareaofthetwotectonicdomainsbetweentheeasternandwesternpartsofChina，anditisverycomplicatedforthetectonicevolution。ItischaracterizedbythepresenceofwelldevelopedmarinedepositsofOrdovician。ThegeochemicNchara

3、cteristicsandlogresponsecharacteristicsofsourcerocksindifferentstrataofOrdovicianareobviouslydiversebyreasonofthefactorsofstructureactivityandsedimentaryenvironment。Thereservoirsandcaprocksandtheircombinationmodeshaveobv

4、iouscharacteristics。Meansandtheoriesofpetroleumgeology、sedimentology、geophysicsandpetrologyanddateofoutcrop，drillingcores，drillings，loggingsandinsidejobsareintegratedtostudycharacteristicsofSOurCerocks、reservoirsandcapro

5、cksofthewesternmarginoftheOrdosBasin。TheorganicmattertypesofOrdovicianinthewesternmarginofOrdosBasinbelongtotypeIandII1。Thehydrocarbonsourcematteriscorrespondinglygood。ThesourcerocksoftheWulalikeFormationhasmaximumabunda

6、nceoforganicmaRerinthestudyarea。TheabundanceoforganicmatterofOrdoviciancarbonateincreaseswiththeaugmentofshalecontent。Therearethehi曲maturedovermaturedsourcerocksinthestudyareaonthewhole，butimmaturetomatureorganicmatterof

7、MiddleOrdovicianexistinPingliangAreaofGansuandsomewellblocks。Therearedifferencesforloggingcurvescharacteristicsofsourcerocksandtheirupperlowerstratum。Thenaturalgammaraycurvesshowhighvaluethatincreaseswiththeaugmentofabun

8、danceoforganicmatteringeneral。Otherloggingcurvesshowrespectiveloggingcharacteristics。Thesecondarydissolutionporesaremaintypesinreservoirspaceofcarbonatereservoirsinthestudyarea。Thefracturesdevelopbecauseoftheimpactoftect