四川盆地须五段烃源岩地化特征及有利烃源岩分布预测  

Research on Source Characteristics and Favorable Source Rock Distribution Areas Prediction of the Fifth Member of Xujiahe Formation of Sichuan Basin

作　　者：黄亮[1] 孟海龙[1] 周鑫宇[1] 陈磊[2] 沈利霞[1] 

机构地区：[1]成都理工大学能源学院,成都610059 [2]中国石油大学地球科学学院,北京102249

出　　处：《重庆科技学院学报（自然科学版）》2013年第5期1-4,9,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：国家自然科学基金项目(41172119);油气藏地质及开发工程国家重点实验室开放基金项目(PLC201102)

摘　　要：对四川盆地须五段烃源岩发育特征及基本地球化学特征进行分析。结果表明,须五段烃源岩主要分布在川西与川中地区,川南与川东地区须五段烃源岩厚度相对较小,有机质丰度总体较高,烃源岩品质较好,川西与川中地区有机质丰度明显高于川南与川东地区;四川盆地不同地区须五段烃源岩有机质类型均以Ⅲ型为主;有机质主要处于成熟—高成熟阶段,生烃潜力较大。四川盆地须五段中好烃源岩分布面积最广,其分布于整个川西中段及靠近川西地区的川南与川中较大面积区域;中等烃源岩发育于川中—川南部分区域;最好烃源岩主要发育于川西坳陷南段地区。The development and basic geochemical characteristics of the fifth member of Xujiahe formation in Sichuan basin are indicated.The results show that the fifth member of Xujiahe formation source rock are mainly distributed in western Sichuan and central Sichuan and relatively thin in southern Sichuan and eastern Sichuan.According to the basic geochemistry characteristics of the fifth member of Xujiahe formation source rock,the studied areas have higher organic material abundance and good quality of source rock as a whole,and the organic abundance in western Sichuan and central Sichuan are obvious better than southern Sichuan and eastern Sichuan＇s in horizontal direction.Most of the organic matters are typeⅢ.The source rocks have entered into the matured and high-matured phase with big potential of hydrocarbon generation.Good favorable source rock has the biggest distribution area among the fifth member of Xujiahe formation in Sichuan basin.It is distributed in the entire middle part of west Sichuan and a larger parts of southern Sichuan and central Sichuan near west Sichuan.Moderate favorable source rock developed in some areas of southern Sichuan and central Sichuan.The fifth member of Xujiahe formation in south part of western Sichuan depression is the best favorable source rock distribution areas.

关 键 词：四川盆地 须五段 烃源岩 地球化学特征 

分 类 号：P618.13[天文地球—矿床学]