渝东南地区下古生界黑色页岩分布特点及有利勘探目标  

Distribution characteristics of lower Palaeozoic black shale and its favorable exploration targets in the southeast area of Chongqing

作　　者：任珠琳[1] 李婉君[1] 杨超[1] 陈永昌[1] 

机构地区：[1]中国地质大学(北京)

出　　处：《录井工程》2013年第1期73-76,89-90,共4页Mud Logging Engineering

基　　金：地质过程与矿产资源国家重点实验室基金项目"渝东南龙马溪组页岩储集性和含气性的岩石学和地球化学评价指标与标准"(项目编号:GPMR201030)

摘　　要：页岩气作为一种新兴的非常规气资源,现已引起广泛关注,其自生自储的特点使得大套富含有机质的黑色页岩成为页岩气勘探的主要目的层位。通过野外露头观察,对渝东南地区寒武系、志留系地层的对比研究,讨论了渝东南地区下古生界黑色页岩的分布特点,认为其有利层位主要为下寒武统牛蹄塘组和下志留统龙马溪组。牛蹄塘组页岩主要分布于东部及东南部,北薄南厚,西北部埋藏较深,东南部有一定程度剥蚀;龙马溪组页岩主要分布在北部及中部,厚度极大且分布较稳定,北部埋藏较深,东南部剥蚀程度比较严重。As an emerging unconventional gas resource, shale gas has now attracted wide attention, its self-generated self-storage features make the large set of organic-rich black shale become the main purpose layers of the shale gas exploration. By the outcrop observation and stratigraphic correlation of Cambrian and Silurian in the southeast area of Chongqing, the paper discussed the black shale distribution characteristics in Lower Palaeozoic, Niutitang formation in Lower Cambrian and Longmaxi formation in Lower Silurian were considered as its major favorable strata. Niutitang formation shale mainly distributes in the eastern and southeastern withthe north thin and south thick, it is deeply buried in the northwest and has a certain erosion in the southeast. Longmaxi formation shale mainly distributes in the northern and central with great thickness and more stable distribution, it is deeply buried in the north and has more serious erosion in the southeast.

关 键 词：页岩气 渝东南地区 黑色页岩 分布特点 

分 类 号：TE121.1[石油与天然气工程—油气勘探]