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《Journal of Northwest University(Natural Science Edition)》 2018-03
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The maceral and pore-developed characteristics in soure rocks of Lucaogou formationin Xinjiang

ZHANG Hui;ZHAO Junfeng;WU Jing;JIN Xianglan;Xi'an Research Institute of China Coal Technology & Engineering Group Corp.;State Key Labratory of Continental Dynamics,Northwest University;  
By the field emission scanning electronic microscope(SEM),the maceral and pore-developed characteristics are observed on the natural section and polished surface in soure rocks of Permian Lucaogou formation in Xinjiang. The results show that,the maceral of Permian Lucaogou formation is classified as lower plankton and advanced plants from raw material. The maceral is mainly bituminite with lower plankton as raw material. The occurrence for bituminite on the natural section are identified as the banded,the filmy and the intergrowth,on polished surface are scattered patches,the banded,the interstitial,and the sealing in shape,and the occurrence provides three genetic relationships for organic and minerals,such as alternating depositing,filling and cementation,and chemical differentiation. The bituminite is significant hydrocarbon-derived composition,with high content,extensive,and developed gas pores. The cutinite,fusinite,and vitriniteclastics formed by advanced plants are buried in argillaceous by debris,and the grain sizes are larger than clay fraction particles. Although some of maceral clastics with high hydrocarbon generated capacity,generally withlow content and dispersive distribution,maceral clastics don't have too much contribution to oil and gas formation,despite increasing total organic carbon content. Maceral and gas pores are important index for hydrocarbon generation potential evaluation.
【Fund】: 国家自然科学基金重点项目(41330315)
【CateGory Index】: P618.13
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