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Article Navigation >  Acta Sedimentologica Sinica  > 2006  >  24(2): 294-299

NAN Qingyun. Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield[J]. Acta Sedimentologica Sinica, 2006, 24(2): 294-299.
Citation: NAN Qingyun. Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield[J]. Acta Sedimentologica Sinica, 2006, 24(2): 294-299.
shu

Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield

  • Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000

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  • Corresponding author: NAN Qingyun
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2006-04-10
  • Biomarker is one of the most effective tools in the study of oilsource correlation gasoil maturity and gasoil migration. By using biomarker GC, GC—MS analysis techniques, the geochemical characters of steranes and hopanes from crude oils of Tahe oil field were investigated in this paper. The study shows〖KG*2〗Tahe oilfield is a compound oil reservoir, which is composed of later generated oils with high maturity lighter biodegradation and earlier〖KG*2〗generated oils with low maturity stronger biodegradation. The characters of C27—C29〖KG*2〗steranes and hopanes series indicate oils with varied maturities generated from the same sort of mother materials. The threedimensional diagram〖KG*2〗formed by Ts/(Tm+Ts),〖KG*2〗rearrangedsterane/sterane and ββ/(ββ+αα)C29〖KG*2〗shows that the migration direction of crude oil is from south to north, which confirms the opinion that oil and gas of Tahe oilfield mainly came from Manjiar Depression——an area to the south of Tahe oilfield.
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  • Received:  1900-01-01
  • Revised:  1900-01-01
  • Published:  2006-04-10

Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield

  • Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou 730000
    Corresponding author: NAN Qingyun
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2006-04-10

Abstract: Biomarker is one of the most effective tools in the study of oilsource correlation gasoil maturity and gasoil migration. By using biomarker GC, GC—MS analysis techniques, the geochemical characters of steranes and hopanes from crude oils of Tahe oil field were investigated in this paper. The study shows〖KG*2〗Tahe oilfield is a compound oil reservoir, which is composed of later generated oils with high maturity lighter biodegradation and earlier〖KG*2〗generated oils with low maturity stronger biodegradation. The characters of C27—C29〖KG*2〗steranes and hopanes series indicate oils with varied maturities generated from the same sort of mother materials. The threedimensional diagram〖KG*2〗formed by Ts/(Tm+Ts),〖KG*2〗rearrangedsterane/sterane and ββ/(ββ+αα)C29〖KG*2〗shows that the migration direction of crude oil is from south to north, which confirms the opinion that oil and gas of Tahe oilfield mainly came from Manjiar Depression——an area to the south of Tahe oilfield.

NAN Qingyun. Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield[J]. Acta Sedimentologica Sinica, 2006, 24(2): 294-299.
Citation: NAN Qingyun. Geochemical Characters Recognition for Steranes and Hopanes from Oils of Tahe Oilfield[J]. Acta Sedimentologica Sinica, 2006, 24(2): 294-299.
shu

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