摘要
AfterthebreakthroughofshalegasexplorationanddevelopmentintheOrdovicianWufengFormation(Fm.)andSilurianLongmaxiFm.ofChongqingJiaoshibaarea,Changning-Weiyuanarea,etc.inSichuanbasin,aseriesofdiscoveryandbreakthroughwereobtainedbyChinaGeologicalSurveyintheCambrianNiutitangFm.andSinianDoushantuoFm.shaleoftheareaswithcomplicatedstructureoutsideSichuanbasin.BasedontheunderstandingofthelawofshalegasenrichmentinLongmaxiFm.inthebasin,thispaperputsforwardthreeelementsoftheformationandenrichmentofshalegas,whicharethe“Source”,the“Diagenesis”andthe“Accumulation”,afterdeeplystudyingthelawshalegasenrichmentandaccumulationinSinian-Cambrianreservoirofthecomplexstructureareaoutsidethebasin.The“Source”meansthesedimentaryenvironmentandpetrologicalcharacteristicsoforganicshale.The“Diagenesis”meansthebasintectonicsubsidenceandhydrocarbongenerationandexpulsionprocessoforganicmatter.The“Accumulation”meansthetectonicupliftandshalegaspreservation.ItisproposedthattheSinian-CambrianandOrdovician-SilurianblackshaleseriesinthemiddleandupperYangtzeregionofsouthernChinawerebothformedinthedeep-watershelfenvironmentofrifttroughandforelandbasinrespectively.Thedessertintervalswereformedinthestrongreductionenvironmentundertransgressivesystemtract.Theshalelithologybelongstocalcium-siliceousandcharcoal-siliceousrespectively.BasedonthesummaryofstructuralevolutioninYangtzearea,thecorrelationofstructuralburialdepthwithshalediagenesisandthecouplingevolutionoforganicmatterwithporestructurearediscussed.Combiningwithstructuralstyles,thepreservationconditionsofshalegasarediscussed.Fivetypesofshalegasreservoircontrolmodelsarefurtherdescribed.Twotypesoffutureexplorationdirections,whicharereversefaultsynclineandpaleo-upliftmarginincomplexstructuralareaoutsidethebasin
出版日期
2018年03月13日（中国期刊网平台首次上网日期，不代表论文的发表时间）
