石油勘探与开发2011，Vol.38Issue(6)：671-684,14.
烃源岩矿物组成特征及油气地质意义——以中上扬子古生界海相优质烃源岩为例
Mineral components of source rocks and their petroleum significance: A case from Paleozoic marine source rocks in the Middle-Upper Yangtze region
摘要
Abstract
The mineralogical composition and its influencing factors of three sets of excellent Paleozoic marine source rocks are analyzed to discuss the geological significance of mineralogical composition in the Middle-Upper Yangtze Region (MUYR). The source rocks in the Lower Cambrian Niutitang, Upper Ordovician Wufeng - Lower Silurian Longmaxi, and Upper Permian Dalong Formations are similar in mineralogical compositions, which are siliceous shale of low clay mineral average content. Mineral contents of the Upper Permian Longtan Formation source rocks show much variation. 65% of source samples have over 70% quartz content, and clay shale is found mostly in the Longtan Formation. The difference of mineral components in marine source rock is mainly caused by the sedimentary environment, and it is also greatly influenced by the bioclastic sedimentation and thermal maturity. Different mineral composition is a cause of the difference in hydrocarbon-generating model and hydrocabarbon expulsion rate of source rock. The source rocks of the Niutitang, Wufeng-Longmaxi and Dalong Formations are rich in brittle minerals and poor in clay mineral, which is favorable for exploiting shale gas, but unfavorable for gas adsorption in shale. And it is necessary to differentiate shale source rocks according to the mineral components in the Longtan Formation in shale gas exploration.关键词
矿物组成/古生界/海相烃源岩/中上扬子区Key words
mineral components/ Paleozoic/ marine source rock/ Middle-Upper Yangtze region分类
能源科技引用本文复制引用
付小东,秦建中,滕格尔,王小芳..烃源岩矿物组成特征及油气地质意义——以中上扬子古生界海相优质烃源岩为例[J].石油勘探与开发,2011,38(6):671-684,14.基金项目
国家重点基础研究发展规划(973)项目(2005CB422102) （973）
石油化工联合基金项目(40839910) （40839910）
