地球物理学进展 ›› 2019, Vol. 34 ›› Issue (5): 1826-1834.doi: 10.6038/pg2019CC0321

• 固体地球物理及空间物理学(大气、行星、地球动力学、重磁电及地震学、地热学) • 上一篇    下一篇

重庆地区侏罗系中统泥岩流体井的水力响应模型研究

张旺1,2,3,张艳1,2,3,*(),符力耘1,2,3,4,曹呈浩1,2,3,赵连锋1,2,3,龚丽文5   

  1. 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
  • 收稿日期:2018-11-23 修回日期:2019-07-02 出版日期:2019-10-28 发布日期:2019-10-28
  • 通讯作者: 张艳 E-mail:evezhangyan@mail.iggcas.ac.cn
  • 作者简介:张旺,男,1987年生,工程师,主要从事石油地质与地震综合研究.(E-mail: zhangwang@mail.iggcas.ac.cn)
  • 基金资助:
    中国科学院战略性先导科技专项(B 类)(XDB10010401);国家自然科学基金(41604035);国家自然科学基金(41874161);中国科学院青年创新促进会基金(2019069)

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

ZHANG Wang1,2,3,ZHANG Yan1,2,3,*(),FU Li-Yun1,2,3,4,CAO Cheng-hao1,2,3,ZHAO Lian-feng1,2,3,GONG Li-wen5   

  1. 1. Laboratory of Earth and Planetary Physics, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
    3. Institutions of Earth Science, Chinese Academy of sciences, Beijing 100049, China
    4. China University of Petroleum (East China), School of Geosciences, Shandong Qingdao 266580, China
    5. Chongqing Earthquake Agency, Chongqing 401147, China;
  • Received:2018-11-23 Revised:2019-07-02 Online:2019-10-28 Published:2019-10-28
  • Contact: Yan ZHANG E-mail:evezhangyan@mail.iggcas.ac.cn

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.

关键词: 潮汐响应, 水平流/垂直流模型, 水位, 泥岩, 渗透率

Abstract:

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.

Key words: Tidal responses, Horizontal/vertical flow model, Water level, Mudstone, Permeability

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