张家界地区下寒武统牛蹄塘组页岩气成藏潜力研究  

Potential Assessment on the Shale Gas Resource in Lower Cambrian Niutitang Formation,Zhangjiajie

作　　者：邓翼 杨荣丰 肖正辉 王朝晖 DENG Yi;YANG Rong-Feng;XIAO Zheng-Hui;WANG Zhao-Hui(418 Geological Team,Bureau of Geology and Mineral Resources Exploration and Development of Hunan Province,Loudi 417000,Hunan,China;College of Resources,Environment and Safety Engineering,Hunan University of Science and Technology,Xiangtan 411100,Hunan,China;Chongqing Wansheng Economic Development Land and Housing Bureau,Chongqing 404100,China)

机构地区：[1]湖南省地质矿产勘查开发局四一八队,湖南娄底417000 [2]湖南科技大学资源环境与安全工程学院,湖南湘潭411100 [3]重庆市万盛经开国土房管局,重庆404100

出　　处：《华南地质与矿产》2020年第2期177-185,共9页Geology and Mineral Resources of South China

基　　金：湖南省科技厅重大专项“湖南页岩气资源潜力评价与电磁探测系统研发(项目编号:2012FJ1006)”。

摘　　要：为了探讨张家界地区页岩气勘探潜力,本文对研究区下寒武统牛蹄塘组黑色页岩的有机碳含量、脆性矿物含量、热演化程度、孔隙度和渗透率进行了采样分析。分析结果表明研究区下寒武统牛蹄塘组黑色页岩具有有机碳和脆性矿物含量高,热演化程度高,孔隙度、渗透率低的特点。采用综合信息叠合法对研究区牛蹄塘组黑色页岩有效厚度、有机碳含量、脆性矿物含量、有机质成熟度、孔隙度、埋深6个要素进行约束勘探目标,并结合页岩气保存条件、地形地貌和交通条件3个因素,最终确定桑植-永定为页岩气资源勘探的潜力区块和沅古坪奥陶系露头区为页岩气资源勘探的有利区块。In order to explore the shale gas exploration potential in Zhangjiajie area,the organic carbon content,brittle mineral content,thermal evolution degree,porosity and permeability of black shale in Niubutang Formation of the Lower Cambrian were sampled and analyzed.The results show that the black shale of Niutitang Formation has the characteristics of high organic carbon and brittle mineral content,high thermal evolution,low porosity and permeability.The effective thickness,organic carbon content,brittle mineral content,organic matter maturity,porosity and burial depth of the black shale of Niuditang Formation in the study area are restricted by the comprehensive information superposition method.In combination with the shale gas preservation conditions,topography and traffic conditions,Sangzhi-Yongding area is finally determined as the potential block for shale gas exploration and outcrops area of Yuanguping Ordovician is a favorable block for shale gas exploration.

关 键 词：页岩气 张家界 下寒武统牛蹄塘组 潜力区块 有利区块 

分 类 号：P618.13[天文地球—矿床学]