简介：研究表明，川西地区沙溪庙组储层主要储集岩为长石砂岩、岩屑长石砂岩，其次为岩屑砂岩、长石岩屑砂岩及岩屑石英砂岩。储集空间分为孔、缝，其中主要储集空间为粒间溶孔，其次为残余粒间孔和粒内溶孔。喉道类型以管状和粒间裂隙为主，属细一微喉型。储层孔隙结构差，具有孔隙小、喉道窄、有效连通孔隙体积小和中一高排驱压力的特征，总体属于低一中孔、低一中渗，局部存在高孔高渗的常规储层，非均质性强。在此基础上通过对储层发育控制因素、储集砂体展布及有利储集区带的研究，为川西沙溪庙组的油气藏勘探开发提供了重要支撑。图10表2参4

简介：TakingmemberoneofYingchengFormationofCretaceousinXudongarea,XushenGasFieldofSongliaoBasinforanexampleandaimedatthediachronousproblemgenerallyexistedinvolcanicreservoirdivision,firstlyadvancedthemethodoftwostepsandtwounitesintheresearchesofvolcanicreservoirfinelydivisionthatguidedbythemethodthatsourcescontrolledandfoundedthestratigraphictrellis.Inthisprocess,volcanicedificesandbodieswereidentifiedandtraced.TheresultsindicatedthataimedstratainstudyareascouldbecarveduptosixlayersofYC1I1,YC1I2,YC1I-II,YC1II1,YC1II2andYC1IIIfromthetoptothebottom.Analyzingcausesandfirmlyunitedofwelldataandseismicdatacouldachievefinestratigraphicdivisionofvolcanicreservoir.Surfacesoflayersandvolcanicbodieswerebasicallyunanimousinsidedirection.Stratuminclinationgraduallyreducedwiththedistancesincreasedfromcraters.Theresultsofvolcanicreservoirdivisionhadpreferableconsistencywithlithologiesandvolcaniclithofaciesanddynamicdevelopmentdata.Theresearchesofferedausefulmethodtostratigraphicdivisionofvolcanicreservoirandithadveryimportantsignificancetoeffectivedevelopmentofvolcanicreservoirinpractice.

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