2021, 40(4) 889-897 DOI:     ISSN: 1004-5589 CN: 22-1111/P

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Keywords
tightoil
lowerlimitofreservoirformation
hydrocarbonexpulsionintensity
sourcerock
favorableare
Authors
KANGDejiang
PubMed
Article by Kangdejiang

Source rock lower limit and classification standard of tight oil reservoir under source in northern Songliao Basi

KANGDejiang

ExplorationandDevelopmentResearchInstitute,DaqingOilFieldCo,Daqing163712,Heilongjiang,China

Abstract

FuyureservoirinnorthernSongliaoBasinisatypicalrepresentativeoftightoilundersource.Inordertoeffectivelyidentifyandpredictthefavorableenrichmentsitesoftightoilandclarifytheexplorationdirection,thelowerlimitandclassificationstandardoftightoilsourcerocksarestudied.Throughthequantitativecalculation ofhydrocarbonexpulsionintensityofQingshankouFormationsourcerocks,combinedwithTemisFlowBasinsimulationsoftware,theexcesspressureisrestored.Bysimulatingtherelationshipbetweenthehydrocarbonexpulsionintensityofthesourcerockandtheresidualorganiccarboncontentandexcesspressureintheexistingargillaceous sourcerock,itisfinallydeterminedthatthemudstoneofQingshankouFormationhasanexcesspressureof10MPa andahydrocarbonexpulsionintensityof15×106t/km2and10% residualorganiccarbonarethelowerlimitof effectivesourcerockfortightoil.Accordingtothislowerlimitstandard,themudstoneofQingshankouFormationis dividedintothreetypes:highqualitysourcerock,effectivesourcerockandineffectivesourcerock.Itisfurther clarifiedthatthedevelopmentoftightoilisalsoaffectedbysourcecontrol,andthedevelopmentareasofeffective sourcerocksandabovesourcerocksarethemainenrichmentsitesoftightoil

Keywords tightoil   lowerlimitofreservoirformation   hydrocarbonexpulsionintensity   sourcerock   favorableare  
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