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世界地质 2017, 36(4) 1190-1198 DOI: ISSN: 1004-5589 CN: 22-1111/P

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	本文关键词相关文章
	油页岩
	风化特征
	风化实验
	青山口组
	松辽盆地南部
	本文作者相关文章
	刘琛
	韩佳兵
	柳蓉
	张坤
	PubMed
	Article by Liu C
	Article by Han J
	Article by Liu Ｒ
	Article by Zhang K

松辽盆地南部上白垩统青山口组油页岩风化特征与实验研究

刘琛，韩佳兵，柳蓉，张坤

1. 吉林大学地球科学学院，长春 130061; 2. 吉林省油页岩及共生能源矿产重点实验室，长春 130061; 3. 东北亚生物演化与环境教育部重点实验室，长春 130026

摘要：以松辽盆地南部上白垩统青山口组油页岩为研究对象，通过露头及浅钻对风化--半风化--未风化岩芯进行系统采样对比分析，同时开展实验室人工风化实验，综合研究油页岩风化特征变化。结果表明，由地表到较深处，油页岩的风化作用逐渐减弱; 根据岩石硬度、节理面发育程度、风化程度，可将油页岩风化带划分为强烈风化、中等风化、弱风化和未风化 4 个带。人工油页岩风化实验分析表明，风化后的油页岩，石英含量明显减少，最高降低了 34%; 长石、方解石含量也出现不同程度的降低; 白云石和片钠铝石含量明显增加。风化后的油页岩热解烃 (S 2 ) 含量、生烃潜量 (Pg) 及发热量出现不同程度的降低，其中生烃潜量 (Pg) 的最大降低幅度可达 37. 26%。风化作用改变了油页岩的岩石矿物组成，减少了有机质碳和氢含量，降低了有机质的生烃和热力潜能。

关键词：油页岩风化特征风化实验青山口组松辽盆地南部

Weathering characteristics and experimental study of Upper Cretaceous Qingshankou Formation oil shale in southern Songliao Basin

LIU Chen，HAN Jia-bing，LIU Ｒong，ZHANG Kun

1. College of Earth Sciences，Jilin University，Changchun 130061，China; 2. Key Laboratory Oil Shale and Coexisting Minerals，Jilin University，Changchun 130061，China; 3. Key Laboratory for Evolution of Past Life and Environment in Northeast Asia，Changchun 130026，China

Abstract: Based on the analysis and comparison of systematically sampled weathered-semi-weathered-unweathered cores from outcrops and shallow drilling boreholes，together with laboratory artificial weathering experiments，the oil shale characteristics of the Upper Cretaceous Qingshankou Formation in the southern Songliao Basin were studied． The results show that the weathering of the oil shale weakened gradually with depth． According to the rock hardness，the development of joint surfaces and the weathering intensity，the oil shale zone of weathering is divided into intense weathering，moderate weathering，weak weathering and unweathered zones． The analysis of artificial weathering experiment shows that the content of quartz in weathered oil shale decreases significantly，and the highest reduction is 34%． The contents of the feldspar and calcite also reduce in different degrees，while the dolomite and dawsonite contents increase obviously． The pyrolysis hydrocarbon (S 2 ) content，the hydrocarbon generation potential (Pg) and calorific value of the weathered oil shale also reduce in different degrees，and the maximum reduction of the hydrocarbon generation potential (Pg) is 37. 26 %． Weathering changed the mineral composition and decreased organic carbon and hydrogen contents of oil shale，and reduced hydrocarbon generation potential and thermal potential of organic matter．

Keywords: oil shale weathering characteristics experimental study Qingshankou Formation southern Songliao Basin

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