车排子地区石炭系火山岩储层发育特征及控制因素

2017

年11月第32卷第6期西安石油大学学报(自然科学版)JournalofXi′anShiyouUniversity(NaturalScienceEdition)Nov.2017

Vol.32No.6

收稿日期:2017-07-08基金项目:国家科技重大专项“准噶尔盆地碎屑岩层系大中型油气田形成规律与勘探方向”(2011ZX05002-002)作者简介:李学良(1987-),男,博士,研究方向:石油地质。E-mail:lixueliang385.slyt@sinopec.comDOI:10.3969/j.issn.1673-064X.2017.06.001中图分类号:TE122文章编号:1673-064X(2017)06-0001-09文献标识码:A

车排子地区石炭系火山岩储层发育特征及控制因素

李学良1,2,林会喜2,石好果2,侯读杰1,孟凡超3

(1.中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室,北京100083;2.中石化胜利油田分公司勘探开发研究院,山东东营257000;3.中国石油大学(华东)地球科学与技术学院,山东青岛266555)摘要:车排子地区石炭系是油气富集的主要层系,火山岩储层的有效性是制约油气成藏的主要因素。根据岩石发育特征将车排子地区石炭系火山岩划分为火山熔岩类、火山碎屑熔岩类、火山碎屑岩类、沉火山碎屑岩类、火山碎屑沉积岩类。根据岩性发育及空间展布特征,将车排子地区石炭系火山岩划分为4个相:分别为爆发相、溢流相、火山通道相和火山-沉积相。火山岩储集空间主要包括原生孔隙、次生孔隙和裂缝3种类型。岩心物性分析化验数据表明储层总体表现为低孔、低渗。受后期成岩和构造作用的影响,车排子地区石炭系火山岩发育风化壳储层结构,根据储层改造程度,划分为土壤带、水解带、淋蚀带、崩解带和母岩带。其中淋蚀带物性最好,其次为崩解带,土壤带和水解带物性较差,一般只能作为盖层。钻井、地震、分析化验等资料研究表明,风化壳储层的形成受控于岩相、断裂和古地貌。其中岩相是风化壳储层形成的基础,断裂促进风化壳储层的发育,古地貌制约风化壳储层展布。关键词:车排子地区;火山岩;风化壳;储层特征;岩相

DevelopmentCharacteristicsandControlFactorsofCarboniferousVolcanicReservoirinChepaiziAreaLIXueliang1,2,LINHuixi2,SHIHaoguo2,HOUDujie1,MENGFanchao3

(1.KeyLaboratoryofMDEforMarineReservoirEvolutionandHydrocarbonAccumulation,ChinaUniversityofGeosciences(Beijing),Beijing100083,China;2.ExplorationandDevelopmentResearchInstitute,ShengliOilfieldCompanyLimitedofSinopec,Dongying257000,Shandong,China;3.FacultyofEarthScienceandEngineering,ChinaUniversityofPetroleum(EastChina),Qingdao266555,Shandong,China)Abstract:TheCarboniferoussysteminChepaiziareaisthemainoilandgasenrichmentlayer,andtheeffectivenessofvolcanicreser-voiristhemainfactorrestrictinghydrocarbonaccumulation.Accordingtothecharacteristicsofrockdevelopment,theCarboniferousvol-canicrocksaredividedinto5typesofvolcaniclava,pyroclasticlava,pyroclasticrock,sedimentarypyroclasticrockandpyroclasticsedi-mentaryrock.Accordingtothecharacteristicsoflithologicdevelopmentandspatialdistribution,theCarboniferousvolcanicrocksinChe-paiziareacanbedividedinto4facies:explosivefacies,effusivefacies,volcanicchannelfaciesandvolcanicsedimentaryfacies.Theres-ervoirspaceofthevolcanorocksmainlyincludes3typesofprimarypores,secondaryporesandfractures.Thephysicalpropertyanalysistestdataofcoresshowthattheoverallperformanceofthereservoirislowporosityandlowpermeability.Bythelatediagenesisandtec-tonism,theweatheringcrustreservoirisdevelopedintheCarboniferousvolcanorocksofChepaiziarea,anditisdividedintosoilzone,hydrolysiszone,leachingzone,disintegrationzoneandmotherrockzoneaccordingtothetransformationdegreeofreservoir.Amongthem,theleachingzonehasthebestphysicalproperties,followedbydisintegrationzone,andthesoilzoneandhydrolysiszonehavepoorphysicalproperties,whichgenerallycanonlybeusedascaprock.Thestudyofdrilling,seismic,andlaboratoryanalyticaldatashowsthattheformationoftheweatheringcrustreservoiriscontrolledbylithofacies,faultsandpaleogeomorphology.Thelithofaciesisthebasisfortheformationofweatheringcrustreservoirs,thefaultspromotethedevelopmentofweatheringcrustreservoirs,andthepaleogeomorphol-ogyrestrictsthedistributionofweatheringcrustreservoirs.Keywords:Chepaiziarea;volcanorock;weatheringcrust;reservoircharacteristic;

lithofacies李学良,林会喜,石好果,等.车排子地区石炭系火山岩储层发育特征及控制因素[J].西安石油大学学报(自然科学版),2017,32(6):1-9.

LIXueliang,LINHuixi,SHIHaoguo,etal.DevelopmentcharacteristicsandcontrolfactorsofCarboniferousvolcanicreservoirinChep-

aiziarea[J].JournalofXi’anShiyouUniversity(NaturalScienceEdition),2017,32(6):

1-9.万方数据

相关主题
相关文档
最新文档