川东南下寒武统牛蹄塘组烃源岩特征及有效性分析  

Characteristics and Validity Analysis of Hydrocarbon Source Rock in the Lower Cambrian Niutitang Formation in Southeast Sichuan

作　　者：魏全超[1] 朱冬梅[1] 黄文明[2] 

机构地区：[1]中国石化勘探南方分公司,成都610041 [2]成都理工大学能源学院,成都610059

出　　处：《四川地质学报》2012年第1期69-73,共5页Acta Geologica Sichuan

摘　　要：通过地球化学分析、储层沥青薄片镜下鉴定,对川东南下寒武统牛蹄塘组烃源岩宏观特征以及微观地球化学特征进行深入研究,并以震旦系灯影组古油藏为例分析了烃源岩的有效性。结果表明,牛蹄塘组烃源岩厚度稳定,底部暗色泥页岩分别厚约25m～43m,平均有机碳含量介于0.5%～1.0%,现今已达过成熟阶段,为中等烃源岩。牛蹄塘组泥页岩是灯影组古油藏的主要烃源岩,古油藏原油裂解气是灯影组气藏成藏的物质基础。This paper deals with geological and geochemical characteristics of hydrocarbon source rock in the Lower Cambrian Niutitang Formation in southeast Sichuan and makes an approach to validity of the source rock by the example of oil reservoir in the Sinian Dengying Formation. The results indicate that 25-43 m thick argillaceous shale in the Lower Cambrian Niutitang Formation as the hydrocarbon source rock of the Sinian oil reservoir is characterized by stable thickness with mean organic carbon content of 0.5-1.0%.

关 键 词：牛蹄塘组 烃源岩 古油藏 川东南 

分 类 号：P618.13[天文地球—矿床学]