重庆地区侏罗系中统泥岩流体井的水力响应模型研究  

Study of the hydraulic response models in Middle Jurassic mudstone fluid wells of Chongqing district

作　　者：张旺[1,2,3] 张艳 符力耘[1,2,3,4] 曹呈浩 赵连锋[1,2,3] 龚丽文[5] ZHANG Wang;ZHANG Yan;FU Li-Yun;CAO Cheng-hao;ZHAO Lian-feng;GONG Li-wen(Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;University of Chinese Academy of Sciences,Beijing 100049,China;Institutions of Earth Science,Chinese Academy of sciences,Beijing 100049,China;China University of Petroleum(East China),School of Geosciences,Shandong Qingdao 266580,China;Chongqing Earthquake Agency,Chongqing 401147,China)

机构地区：[1]中国科学院地质与地球物理研究所,中国科学院地球与行星物理院重点实验室,北京100029 [2]中国科学院大学,北京100049 [3]中国科学院地球科学研究院,北京100049 [4]中国石油大学(华东)地球科学与技术学院,山东青岛266580 [5]重庆市地震局,重庆401147

出　　处：《地球物理学进展》2019年第5期1826-1834,共9页Progress in Geophysics

基　　金：中国科学院战略性先导科技专项(B类)-(XDB10010401);中国科学院青年创新促进会基金(2019069)联合资助;国家自然科学基金(41604035,41874161)

摘　　要：基于重庆构造活动较弱,天然裂隙不发育地区的大足十万和巴南安澜两口观测含水层含有泥岩的侏罗系中统沙溪庙组井做了流体潮汐-气压响应的分析研究以探究含水层含有泥岩的井的水力响应模型.研究发现:泥岩的脆性和多裂隙特性可能导致含水层和隔水层含有泥岩的井受裂隙影响明显,封闭性不够好,因此伴随较差的井孔贮藏效应,存在垂直向渗流.本文采用的分析手段对于研究页岩气压裂开发过程中注入页岩甜点段的压裂液等废液是否有可能通过上覆未压裂页岩地层垂向运移进而污染浅层的地下水具有理论指导意义.The two fluid wells, Dazushiwan and Banananlan located on the weak tectonic activity area with few natural fractures in Chongqing district. The observation aquifer of the two wells contains mudstone of the Middle Jurassic Shaximiao formation. Based on the two fluid wells, we research the flow response on the tidal and barometric pressure to explore the hydraulic response model with the aquifer containing mudstone. The study indicates that brittleness and fracture characteristics of mudstone can lead to the weak sealing ability of aquifer and water-resisting layer containing mudstone. That causes the poor storage effect and the vertical seepage flow. The analysis methods can be a meaningful theory guidance to study if the waste fluids from the process of shale gas development can migrate vertically through the overlying no-fractured shale to the shallow formation and lead to the pollution of shallow groundwater.

关 键 词：潮汐响应 水平流/垂直流模型 水位 泥岩 渗透率 

分 类 号：P315[天文地球—地震学]