Preliminary Study on Stable Carbon Isotope Compositions of Individual Hydrocarbons of Crude Oils and Source Rocks and Oil /Source Corelation in the TurparrHami Basin

Yang Jiajing; Hu Boliang

The genetic classification of crude oils and oil/source correlation were studied based on the deposi-tional environment and the input of parent materials of crude oils and source rocks from the Turpan-Ha-mi Basin by the research of the distribution and assemblage characteristics of biomarkers and stable car-bon isotope compositions and distribution model of individual hydrocarbons, which were detectedthrough the gas chromatographzsotope ratio in mass spectrometer the following three aspects 1)thetypical lacustrine-wamp or swamp fades coal-derived oil, such as crude oils gencrated from the Jurassicof Taibei Depression; 2) the lacustrine oils, like the Triassic oil from the Tuocan 1 well; 3) the shallowlylacustrine oil, such as the Middle Jurassic oil in the Shengjingkou oilfield. Theensups of oil /source corenlation showed that the Jurassic oils in Taibei Depression is originated from the Middle-Lower Jurassic coal measure organic matter,and the Triassic oil in the Tuokexun Depression is from Upper Permian la-custrine fades mud stones in the Turpan-HamiBasin.

1 Research Institute of Petroleum Exploration and Development Chengdu 610051;

2 Lanzhou Institute of Geology Chinese Academy of Sciences Lanzhou 730000

Received Date: 1997-10-12

Publish Date: 1997-04-10

Key words:

Turpan-Hami Basin /
oil from coal /
gas chromatograph-isotopic /
ratio mass spectrom eter stable carbon isotope composition of individual hydrocarbons /
biomarkers

Abstract: The genetic classification of crude oils and oil/source correlation were studied based on the deposi-tional environment and the input of parent materials of crude oils and source rocks from the Turpan-Ha-mi Basin by the research of the distribution and assemblage characteristics of biomarkers and stable car-bon isotope compositions and distribution model of individual hydrocarbons, which were detectedthrough the gas chromatographzsotope ratio in mass spectrometer the following three aspects 1)thetypical lacustrine-wamp or swamp fades coal-derived oil, such as crude oils gencrated from the Jurassicof Taibei Depression; 2) the lacustrine oils, like the Triassic oil from the Tuocan 1 well; 3) the shallowlylacustrine oil, such as the Middle Jurassic oil in the Shengjingkou oilfield. Theensups of oil /source corenlation showed that the Jurassic oils in Taibei Depression is originated from the Middle-Lower Jurassic coal measure organic matter,and the Triassic oil in the Tuokexun Depression is from Upper Permian la-custrine fades mud stones in the Turpan-HamiBasin.

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Preliminary Study on Stable Carbon Isotope Compositions of Individual Hydrocarbons of Crude Oils and Source Rocks and Oil /Source Corelation in the TurparrHami Basin

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