文档名：松辽盆地北部全油气系统成藏模式与勘探潜力
摘要：松辽盆地作为一个多套优质烃源岩大面积发育的大型陆相叠合盆地,由于受多期构造与沉积的复合控制和改造,油气藏富集规律复杂多样.为进一步落实松辽盆地北部油气成藏条件与勘探潜力,基于全油气系统新概念,将松辽盆地北部划分为2个全油气系统:以青山口组为生油岩,嫩江组为区域盖层的储盖组合,形成了常规油、致密油、页岩油多类型有序成藏的上部石油系统;以沙河子组为烃源岩,登娄库组为区域盖层的储盖组合,形成了营城组火山岩、沙河子组砂砾岩等多种气藏差异富集的下部天然气系统.以此为基础,研究了松辽盆地北部油气藏的基本油气地质条件、常规-非常规油气的共生特征与油气分布情况.上部石油系统青山口组源岩经过生烃增压、幕式排烃后,地层压力释放,页岩储层形成自封闭体系,内部干酪根持续生烃、油气原位成藏,形成大规模连续分布的"立体式"页岩油藏;扶余油层致密油受生烃增压作用的控制、油气向下"倒灌",形成断裂下排-横向运移、源-储侧向对接充注成藏.下部天然气系统沙河子组源岩持续生烃,受源储关系、储层特征和输导通道等成藏要素的耦合控制,形成中央古隆起"源储叠置、不整合输导、淋滤层聚气、高部位富集",营城组火山岩气藏"下生上储、深断裂通源、高部位聚气"和沙河子组致密气"自生自储、断裂控砂、超压控富"等3种成藏模式.研究成果对松辽盆地不同类型油气资源分布预测和勘探具有重要指导意义.
Abstract：Asahugecontinentalsuperimposedbasinwithseveralsetsofhigh-qualitysourcerocksdevelopedinalargearea,SongliaoBasinhasreservoirswithcomplexanddiverseenrichmentlawsduetocompositecontrolandre-workingofmulti-stagesstructureandsedimentation.Inordertofurtherdetermineaccumulationconditionsandex-plorationpotential,northernSongliaoBasinisdividedinto2wholepetroleumsystemsbasedonnewconceptofwholepetroleumsystem:upperpetroleumsystemformedwithorderlyaccumulationofseveraltypesincludingcon-ventionaloil,tightoilandshaleoil,andreservoir-sealassemblagewithQingshankouFormationassourcerockandNenjiangFormationasregionalcaprock;lowergassystemformedwithdifferentialenrichmentofvariousgasreser-voirs,includingvolcanicrockofYingchengFormationandgluteniteofShaheziFormation,andreservoir-sealas-semblagewithShaheziFormationassourcerockandDengloukuFormationasregionalcaprock.Onthisbasis,ba-sicpetroleumgeologicalconditionsofreservoirs,coexistencecharacteristicsanddistributionofconventional-uncon-ventionaloilandgasinnorthernSongliaoBasinarestudied.Afterhydrocarbongenerationpressurizationandepisod-ichydrocarbonexpulsionofsourcerocksinQingshankouFormationofupperpetroleumsystem,formationpressureisreleased.Oilandgasmainlymigratedandaccumulatedinreservoirswithhighporosityandpermeabilityafterdis-chargedfromsourcerocks,formingconventionalreservoirswithoilandgasgenerationinlowerpartandstorageinupperpart,drivenbybuoyancyandtakingfaultsaspaths.Shalereservoirformsself-sealingsystem.Continuoushy-drocarbongenerationofinternalkerogenandin-situoilandgasaccumulationleadtotheformationoflarge-scalecontinuouslydistributed"volumetric"shalereservoir.TightoilofFuyureservoiriscontrolledbypressurizationef-fectofhydrocarbongeneration,withoilandgas"backflowing",accumulatingbyfaulteddownwardexpulsion-later-almigrationandsource-reservoirlateraljuxtaposedcharge.Inlowergassystem,sourcerocksofShaheziFormationcontinuegeneratinghydrocarbon.Controlledbycouplingfactorsofsource-reservoirrelationship,reservoircharac-teristicsandtransportpaths,3accumulationpatternsareestablished,including"superimposedsourcerockandreservoir,unconformitytransport,gasaccumulationinleachinglayerandgasaccumulationinhighareas"ofcen-tralpaleo-uplift,"lowergenerationandupperreservoir,deepfaultsourceconnectionandgasaccumulationinhigharea"ofYingchengFormationvolcanicrockgasreservoirsand"self-generationandself-preserve,faultcontrolledsandbodiesandoverpressurecontrolledenrichment"oftightgasinShaheziFormation.Theresearchprovidesguid-ingsignificanceforpredictingandexploringthedistributionofdifferenttypesofoilandgasresourcesinSongliaoBasin.
作者：白雪峰 陆加敏 李军辉 杨亮 孙立东 付秀丽 李笑梅 郑强Author：BAIXufeng LUJiamin LIJunhui YANGLiang SUNLidong FUXiuli LIXiaomei ZHENGQiang
作者单位：多资源协同陆相页岩油绿色开采全国重点实验室,黑龙江大庆163712;中国石油大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712
刊名：大庆石油地质与开发 ISTICPKU
Journal：PetroleumGeology&OilfieldDevelopmentinDaqing
年，卷(期)：2024, 43(3)
分类号：TE122.1
关键词：松辽盆地 全油气系统 青山口组 沙河子组 成藏规律
Keywords：SongliaoBasin wholepetroleumsystem QingshankouFormation ShaheziFormation accumulationlaw
机标分类号：TE122P618.13P5
在线出版日期：2024年6月25日
基金项目：中国石油天然气股份有限公司科学研究与技术开发项目，中国石油天然气股份有限公司重大科技项目松辽盆地北部全油气系统成藏模式与勘探潜力[
期刊论文] 大庆石油地质与开发--2024, 43(3)白雪峰 陆加敏 李军辉 杨亮 孙立东 付秀丽 李笑梅 郑强松辽盆地作为一个多套优质烃源岩大面积发育的大型陆相叠合盆地,由于受多期构造与沉积的复合控制和改造,油气藏富集规律复杂多样.为进一步落实松辽盆地北部油气成藏条件与勘探潜力,基于全油气系统新概念,将松辽盆地北部...参考文献和引证文献
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松辽盆地北部全油气系统成藏模式与勘探潜力 Hydrocarbon accumulation patterns and exploration potential of whole petroleum systems in northern Songliao Basin
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