安徽陆相页岩气富集条件——以来安-天长地区中新生代为例  

ENRICHMENT CONDITIONS OF TERRESTRIAL SHALE GAS——AN EXAMPLE FROM THE MESOZOIC-CENOZOIC IN LAIAN-TIANCHANG,ANHUI

作　　者：俞显忠 赵志义[1] 张文永[1] 朱文伟[1] 胡广青[1] 窦新钊[1] 

机构地区：[1]安徽省煤田地质局勘查研究院,安徽合肥230088

出　　处：《安徽地质》2014年第4期260-262,共3页Geology of Anhui

摘　　要：通过对来安-天长地区中新生代陆相油气地质、地球化学以及地球物理等资料的分析,结合该区的沉积演化特征,得出区内中新生界白垩系葛村组、泰州组、古近系阜宁组、戴南组暗色泥页岩主要为陆相沉积,形成于半深水至深水湖及滨海沉积环境,累计厚度>400m,有机质类型以Ⅰ-Ⅱ1型为主,有机质热演化程度适中,具有较好的页岩气富集和保存条件,勘查前景较好。Based on analysis of the mid-Cenozoic terrestrial oil and gas geology, geochemistry and geophysics data on the Lai’an-Tianchang area, combined with sedimentary evolution features of the area, it is concluded that the dark muddy shale in the mid-Cenozoic Cretaceous Gecun Formation, Taizhou Formation, Paleogene Funing Formation and Dainan Formation is mainly terrestrial deposit formed in semi-deep to deep lake and seashore sedimentary environment, totaling over 400m in thickness, of which the organic matter is of Ⅰ-Ⅱ1 type, with moderate degree of thermal evolution, better conditions for shale gas enrichment and reservation, and good prospect for exploration.

关 键 词：页岩气 富集条件 陆相沉积 中新生代 来安-天长 安徽 

分 类 号：TE132.2[石油与天然气工程—油气勘探]