Biomarker Characteristics in Hydrocarbon Source Rocks of Hongqi Formation, Tuquan Basin

Xing Chao Jiang; Jian Mei Zhang; Fei Liu

doi:10.4028/www.scientific.net/AMM.295-298.2703

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 295-298Biomarker Characteristics in Hydrocarbon Source...

Biomarker Characteristics in Hydrocarbon Source Rocks of Hongqi Formation, Tuquan Basin

Abstract:

Based on gas chromatography mass spectrometry techniques, the biomarker characteristics of the Hongqi Formation source rocks in the Tuquan basin are studied, information and petroleum geological significance on organic matter origin, sedimentary environment and organic matter maturity are revealed. Biomarker assemblage characteristics of the Hongqi Formation source rocks are described as follows: Long-chain tricyclic terpane and gammacerane is abundant, C₂₇ regular steranes is predominant. The low content of gammacerane in organic matter shows that the source rocks were deposited in the low salinity environment. The mean value of steranes/hopanes is 0.40, showing more contribution from algae than bacteria. High content of C₂₇ regular steranes indicate that the parent material input is mainly the low aquatic o_{Subscript text}rganism. Biomarker parameters including Ts/(Ts+Tm) ratio, C₂₉ steranes 20S/(20S+20R) ratio, C₂₉ sterane αββ/(αββ+ααα) ratio indicate that Hongqi Formation source rock has reached or surpassed the main phase of oil generation.

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Applied Mechanics and Materials (Volumes 295-298)

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2703-2706

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https://doi.org/10.4028/www.scientific.net/AMM.295-298.2703

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February 2013

Authors:

Xing Chao Jiang, Jian Mei Zhang, Fei Liu

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Biomarker Characteristics, Hongqi Formation, Source Rocks, Tuquan Basin

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