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- W2390981851 abstract "The fluid inclusions in Sangonghe Formation of Jurassic in Yanqi basin Northwest China were investigated. The fluid inclusions in Sangonghe Formation , which mostly occurred in the dissolution or pressure solution pores of quartz grains, were usually small in their size and low in their abundance. Up to 80% of organic inclusions existed in the state of liquid hydrocarbon phase, only some 20% of them in gaseous and gaseous-liquid hydrocarbon phases. In addition to organic inclusions, there were some saline-aqueous solution inclusions. Combined with the evolution history of the diagenesis and organic matter maturation, the fluid inclusions were mainly formed in the stage of late diagenesis in late Jurassic. The homogenization temperatures of inclusions fell in the temperature interval of 101～130℃, with ranges of 101～110℃ and of 121～130℃ as two peaks. According to the temperature history of Sangonghe Formation, the temperature of 101～110℃ was consistent with the temperature of Sangonghe Formation in late Jurassic and the peak of 121～130℃ with the temperature in the end of Jurassic when the formation reached its deepest burial in geohistory. The composition of hydrocarbon inclusion also showed two peaks in gas chromatogram with one peak in C 18 or C 20 and the other in C 26 or C 27 , which indicated the two formation periods of the inclusion. The maturity indices of inclusion component showed that the inclusions were formed in low mature stage of source rock. In summary, the fluid inclusion of Sangonghe formation of Jurassic in Yanqi basin were mainly formed in two periods, with one in late Jurassic when the source rock of the basin was in low mature stage, and the other in the end of Jurassic when the formation reached its deepest burial and the source rock in mature stage." @default.
- W2390981851 created "2016-06-24" @default.
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- W2390981851 date "2002-01-01" @default.
- W2390981851 modified "2023-09-25" @default.
- W2390981851 title "Analysis on the Formation Time of Fluid Inclusion in Sangonghe Formation of Jurassic in Yanqi Basin, Northwest China" @default.
- W2390981851 hasPublicationYear "2002" @default.
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