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2021, 40(4) 889-897 DOI:
ISSN: 1004-5589 CN: 22-1111/P |
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Source rock lower limit and classification standard of tight oil reservoir under source in northern Songliao Basi |
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KANGDejiang |
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ExplorationandDevelopmentResearchInstitute,DaqingOilFieldCo,Daqing163712,Heilongjiang,China |
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Abstract:
FuyureservoirinnorthernSongliaoBasinisatypicalrepresentativeoftightoilundersource.Inordertoeffectivelyidentifyandpredictthefavorableenrichmentsitesoftightoilandclarifytheexplorationdirection,thelowerlimitandclassificationstandardoftightoilsourcerocksarestudied.Throughthequantitativecalculation ofhydrocarbonexpulsionintensityofQingshankouFormationsourcerocks,combinedwithTemisFlowBasinsimulationsoftware,theexcesspressureisrestored.Bysimulatingtherelationshipbetweenthehydrocarbonexpulsionintensityofthesourcerockandtheresidualorganiccarboncontentandexcesspressureintheexistingargillaceous sourcerock,itisfinallydeterminedthatthemudstoneofQingshankouFormationhasanexcesspressureof10MPa andahydrocarbonexpulsionintensityof15×106t/km2and10% residualorganiccarbonarethelowerlimitof effectivesourcerockfortightoil.Accordingtothislowerlimitstandard,themudstoneofQingshankouFormationis dividedintothreetypes:highqualitysourcerock,effectivesourcerockandineffectivesourcerock.Itisfurther clarifiedthatthedevelopmentoftightoilisalsoaffectedbysourcecontrol,andthedevelopmentareasofeffective sourcerocksandabovesourcerocksarethemainenrichmentsitesoftightoil |
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Keywords:
tightoil
lowerlimitofreservoirformation
hydrocarbonexpulsionintensity
sourcerock
favorableare
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Received Revised Online: |
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