Oil & Gas Geology ›› 2006, Vol. 27 ›› Issue (5): 696-701.doi: 10.11743/ogg20060516

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Comparative study of biomarkers and carbon isotopes of coal-measure source rock in Jiyang depression

Li Zheng, Li Juyuan, Xu Xingyou, Lin Wu, Wang Ru   

  1. The Geological Research Institute of Shengli Oilfield Co.Ltd, SINOPEC, Dongying, Shandong 257015
  • Received:2006-07-06 Online:2006-10-25 Published:2012-01-16

Abstract:

A detaile comparative study is performed on the biomarkers and the carbon isotopes of two sets of coal-measure source rocks in Permo-Carboniferous and Mesozoic in Jiyang depression based on a systemic analysis of large amount of source rock data.Compared with the Mesozoic Fangzi Formation the coal measures source rock in Permo-Carboniferous is larger in stable carbon isotope of kerogen and group composition,higher in contents of gammacerane and C27sterane,and lower in ratio of Pr/Ph,indicating a better environment for hydrocarbon generation,composition of parent materials,and preservation condition.

Key words: carbon isotope, biomarker, Permo-Carboniferous, coal-measure source rock, Jiyang depression

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