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黔西南地区地热储层结构特征

涂明江 赵良杰 李强 陈刚 王若帆 王元坤

涂明江,赵良杰,李 强,等. 黔西南地区地热储层结构特征−以望谟平洞地热储层为例[J]. 中国岩溶,2024,43(1):84-91 doi: 10.11932/karst20240107
引用本文: 涂明江,赵良杰,李 强,等. 黔西南地区地热储层结构特征−以望谟平洞地热储层为例[J]. 中国岩溶,2024,43(1):84-91 doi: 10.11932/karst20240107
TU Mingjiang, ZHAO Liangjie, LI Qiang, CHEN Gang, WANG Ruofan, WANG Yuankun. Structural characteristics of geothermal reservoirs in southwest Guizhou: Taking Pingdong geothermal reservoir in Wangmo county as an example[J]. CARSOLOGICA SINICA, 2024, 43(1): 84-91. doi: 10.11932/karst20240107
Citation: TU Mingjiang, ZHAO Liangjie, LI Qiang, CHEN Gang, WANG Ruofan, WANG Yuankun. Structural characteristics of geothermal reservoirs in southwest Guizhou: Taking Pingdong geothermal reservoir in Wangmo county as an example[J]. CARSOLOGICA SINICA, 2024, 43(1): 84-91. doi: 10.11932/karst20240107

黔西南地区地热储层结构特征——以望谟平洞地热储层为例

doi: 10.11932/karst20240107
基金项目: 贵州省地质矿产勘查开发局地质科研项目(黔地矿科合[2020]23号);贵州省地质勘查基金项目“贵州省水文地质志修编”(DKJJ2021-01号)
详细信息
    作者简介:

    涂明江(1984-),男,高级工程师,研究方向:水文地质、地热地质、环境地质。E-mail:443431924@qq.com

    通讯作者:

    李强(1982-),男,正高级工程师,研究方向:水文地质、环境地质、地热地质。E-mail:109616117@qq.com

  • 中图分类号: P314

Structural characteristics of geothermal reservoirs in southwest Guizhou: Taking Pingdong geothermal reservoir in Wangmo county as an example

  • 摘要: 基于地温梯度的地热资源开发受区域地热储层结构及导水构造控制。文章以贵州省望谟县平洞地热储层为研究对象,依据地质调查和ZK1钻孔揭露的地热储层结构为依据,分析区内热储层岩性特征、热储构造、导水构造、地温场特征、地热流体水化学特征,以深入理解地热流体循环机制。研究表明:研究区地处上里地背斜倾伏端,地热流体接受大气降水补给,沿裂隙、断裂带进入深循环并汇集于热储层及断层破碎带,径流过程主要受断裂构造控制,显示出典型的褶皱隆起断裂对流型特征;区内地下水化学类型为HCO3-Ca·Mg型;地热流体增温过程主要由地温梯度控制,平均地温梯度值为2.34 ℃·(100 m)−1,热储构造和导水构造对增温促成也有一定影响。研究成果可为黔西南地区及其他类似地热储层的地热能开发提供参考。

     

  • 图  1  研究区构造纲要图

    Figure  1.  Structural diagram of the study area

    1  蜓屑灰岩质碎块

    1.  Fragments of fusulinid debris limestone

    2  (含)藻砾砂屑生物屑灰岩质碎块

    2.  Fragments of/containing algal gravel and bioclastic limestone

    图  2  勘探孔地温场的垂向变化特征曲线图

    Figure  2.  Vertical variation curve of geothermal field of the borehole

    图  3  Piper 三线图

    Figure  3.  Piper three-line diagram

    图  4  研究区地热流体循环机制图

    Figure  4.  Circulation mechanism of geothermal fluid in the study area

    表  1  热储层岩石岩矿鉴定主要化学成分表

    Table  1.   Main chemical compositions of rock and ore in the thermal reservoir

    样品编号地层代号岩石化学成分及平均含量/%
    CaOMgOAl2O3SiO2Fe2O3Mn/10−6SK2ONa2OTiO2
    2018G-539断层带53.80.480.020.1460.17390.0180.0240.0840.002
    2018G-540Pjh53.740.760.1740.2260.179470.020.040.10.009
    2018G-541P2h53.560.560.2360.540.4961010.020.0430.0960.011
    2018G-467Pjh52.240.275.230.440.270.0480.0140.0050.04
    2018G-468Pjh52.020.225.830.330.2930.030.0120.0380.02
    下载: 导出CSV

    表  2  ZK1号地热勘探孔井温测量数据统计表

    Table  2.   Statistics of measurement data on well temperature of ZK1 geothermal borehole

    深度/m 温度/℃ 深度/m 温度/℃ 深度/m 温度/℃
    50 27.62 900 45.17 1 700 59.47
    100 27.6 950 46.11 1 750 60.3
    150 28.06 1 000 47 1 800 61.43
    250 29.45 1 050 48.06 1 850 62.05
    300 30.39 1 100 48.87 1 900 62.83
    350 30.97 1 150 49.76 1 950 63.79
    400 31.95 1 200 50.77 2 000 65.02
    450 32.59 1 250 51.6 2 050 65.78
    500 33.48 1 300 52.47 2 100 67.16
    550 34.26 1 350 53.27 2 150 68.55
    600 35.08 1 400 54.02 2 200 69.44
    650 36.21 1 450 55.02 2 250 70.39
    700 41.81 1 500 55.75 2 300 71.35
    750 42.87 1 550 56.69 2 350 73.03
    800 43.74 1 600 57.81 2 400.27 74.5
    850 44.43 1 650 58.8
    下载: 导出CSV
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  • 收稿日期:  2023-06-15
  • 录用日期:  2024-01-09
  • 修回日期:  2023-08-02
  • 网络出版日期:  2024-03-21
  • 刊出日期:  2024-02-01

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