地质论评2017，Vol.63Issue(4)：1001-1011,11.DOI:10.16509/j.georeview.2017.04.011
贵州寒武系和石炭系页岩气开采对环境影响分析——以牛蹄塘组和打屋坝组为例
Environment Impact Assessment of Shale Gas Extraction: A Case Study of the Dawuba Formation and Niutitang Formation, in Guizhou Province
摘要
Abstract
Objectives:The shale gas is the important new resources in the global,and its development growing all over the world.Therefore,it is important issue on the destruction of groundwater reservoirs during exploring the process of hydraulic fracturing in extracting shale gas,and the various chemicals used in fracturing fluids might pollute the groundwater.Hence,it's necessary to study this issue,so as to formulate strategies to protect the groundwater.Methods:There are 10.48 trillion cubic meters shale gas in Guizhou Province,according to the national potential assessment of shale gas resources in 2011.The shale gas resources in the Cambrian Niutitang Formation shale and Carboniferous Dawuba Formation shale in Guizhou Province are abundant.We analyze damaging effects of groundwater reservoirs during exploring the process of hydraulic fracturing in extracting shale gas,by studying on strata set,lithological characteristics,geochemistry and reservoir characteristics of Niutitang Formation and Dawuba Formation shales.Additionally,we done shale immersion test by fracturing fluid.Results:Based on the field investigation and lab tests,the main progresses of the thesis are as follows:①The result shows that the mass concentration of the element in fracturing fluid rise with time and temperature,especially significant leaching of elements such as As,Cd,Pb,Se,Co,Ba,which will have enormous effect on environment.②Owing to aquifer and aquifuge destroyed by the extraction of shale gas,the groundwater pollution model was established.③The risk of environmental contamination for flowback fracturing fluid analyzed in the paper.Conclusions:The groundwater pollution model was established,owing to aquifer and aquifuge destroyed by the extraction of shale gas,and the risk of environmental contamination for flowback fracturing fluid analyzed in the paper.关键词
页岩气开发/水力压裂/浸泡试验/黑色页岩/环境污染Key words
shale gas development/hydraulic fracturing/shale immersion testing/black shale/environmental pollution引用本文复制引用
杨瑞东,张云鹤,高军波,魏怀瑞,苏慧敏..贵州寒武系和石炭系页岩气开采对环境影响分析——以牛蹄塘组和打屋坝组为例[J].地质论评,2017,63(4):1001-1011,11.基金项目
本文为贵州省教育厅创新群体重大项目(编号:KY字[2016]024)和贵州省重点学科建设项目(编号:ZDXK[2015]20号)资助的成果.This study was financially supported by the Innovation Group Major Project of Guizhou Province Education Department(No.KY[2016]024),and the Guizhou Province Key Discipline Construction Project (No.ZDXK 2015-20). （编号:KY字[2016]024）
