Mineral Components of Source Rocks and Their Petroleum Significance: A Case from Paleozoic Marine Source Rocks in the Middle-Upper Yangtze Region
详细信息
- 责任者：Fu Xiaodong (Wuxi Research Institute of Petroleum Geology ; SINOPEC ; Wuxi 214151 ; China) ; Qin Jianzhong
- 刊名：Petroleum Exploration and Development
- 出版年：2011
- 卷期：38(6)
- 关键词：海相生油 ; marine oil generation ; 烃源岩 ; source rocks ; 矿物成分 ; mineral composition ; 扬子地区 ; Yangtze Region
- 页码：p.671-684
- 图表：11 illus., 1 table, 65 refs.
- 分类号：1003
- issnNo：ISSN1000-0747
- isbnNo：CN11-2360/TE
摘要
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. 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.