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- W2367734143 abstract "Tabei field is separated into Lunnan fault uplift,Sangtamu fault uplift and Jilake anticline structuere from north to sounth.Analysis of a range of Triassic crude oils in this area appears to indicate that neutral nitrogen compounds and alkylphenols has a strong migration fractionation.In addition, from the south of the field to the north,the absolute concentration of neutral nitrogen compounds has changed from large to small with relative enrichment for nitrogen shielded isomers,and parts of nitrogen shielded isomers and nitrogen exposed isomers relatively scarce in concentration.The concentrations of benzo〔a〕carbazole plus benzo〔c〕carbazole(〔a〕+〔c〕),carbazole(CA),methylcarbazoles(MCA)and dimethylcarbazoles(DMCA)of crude oils in Sangtamu fault uplift are obvious higher than those of Lunnan fault uplift.For instance,differences in the migration parameters between the LN44 well oil from Sangtamu fault uplift,and LN2 well oil from Lunnan fault uplift are very obvious,i.e.,the amounts of [a]+[c],CA,MCA,DMCA decrease from 1.80 μg/g oil,2.10 μg/g oil,6.57 μg/g oil,13.43 μg/g oil to 0.49 μg/g oil,0.93 μg/g oil,4.39 μg/g oil,1.02 μg/g oil.From south to north,the [a]/[c] ratio in Jilake structure is the highest,ranging from 2.04 to 2.22,and the ratio in Sangtamu fault uplift range from 0.98 to 1.94.However,Lunnan fault uplift is lower,ranging from 0.71 to 1.25.The ratio of o cresol,to m cresol,and of 2,6 to 2,3 dimethylphenol,i.e.,the hydroxyl group shielded isomers are relatively enriched in the oils from the north of Tabei field.In the same fault uplift,the neutral nitrogen compounds of crude oils have migration frationation from the west of the fault uplift to the east,as well as from T Ⅲ oil leg of the fault uplift to T Ⅰ oil leg.The results suggest that Triassic oils across Tabei field migrate laterally from Jilake field to Sangtamu fault uplift and Lunnan fault uplift,Trassic oils in the same fault uplift migrate and remigrate vertically from T Ⅲ oil leg to T Ⅰ oil leg and from the west of the fault to the east." @default.
- W2367734143 created "2016-06-24" @default.
- W2367734143 creator A5053204257 @default.
- W2367734143 date "2001-01-01" @default.
- W2367734143 modified "2023-09-23" @default.
- W2367734143 title "Migration Fractionation of Neutral Nitrogen Compounds and Alkylphenols in Triassic Crude Oils from Tabei Field,Tarim Basin,China" @default.
- W2367734143 hasPublicationYear "2001" @default.
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