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Analysis and Insights of the Experiment Results of Geothermal Tail Water Reinjection in Sandstone-type Thermal Storage at Pengjiaping, Lanzhou
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Hao-dong LI1, 2, 3, Jun-yu ZHU1, 2, Hui WANG1, 2, Wen-hui LIU1, 2, Xing-xiang LIU1, 2, 3, Song LI1, 2, 3, *
Science Technology and Engineering | 2025, 25(11) : 4438 - 4447
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Science Technology and Engineering | 2025, 25(11): 4438-4447
• Papers·Astronomy and Geosciences •
Analysis and Insights of the Experiment Results of Geothermal Tail Water Reinjection in Sandstone-type Thermal Storage at Pengjiaping, Lanzhou
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Hao-dong LI1, 2, 3, Jun-yu ZHU1, 2, Hui WANG1, 2, Wen-hui LIU1, 2, Xing-xiang LIU1, 2, 3, Song LI1, 2, 3, *
Affiliations
  • 1 Second Geological and Mineral Exploration Institute of Gansu Provincial Geological and Mineral Exploration and Development Bureau, Lanzhou 730020, China
  • 2 Gansu Hydrogeology and Engineering Geological Survey Institute Co., Ltd., Lanzhou 730020, China
  • 3 Gansu Provincial Geothermal Resources Exploration and Development Technology Innovation Center, Lanzhou 730020, China
Published: 2025-04-18 doi: 10.12404/j.issn.1671-1815.2403514
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Geothermal tail water reinjection is the main bottleneck that restricts the development and utilization of geothermal resources in Lanzhou Basin. In order to break through the technological gap of geothermal tail water reinjection in Lanzhou Basin sandstone-type thermal storage, relying on the geothermal heating demonstration project in Pengjiaping, Lanzhou City, for the first time, the natural reinjection experiment with graded flow rates of 15, 20, 25, 28 m3/h and graded pressure pressurised reinjection experiment of 0.1, 0.2, 0.3, 0.4, 0.5, 0.6 MPa were designed and carried out, the maximum stable natural reinjection volume of 27.96 m3/h and the stable reinjection volume of 51.68 m3/h for 0.667 MPa pressure were firstly obtained from the sandstone-type thermal storage of Pengjiaping, Lanzhou Basin, and the impact of geothermal tail water reinjection on the water level, water temperature, and temperature field of the extraction wells was also investigated. After a heating season of productive reinjection experiment verification, a set of suitable and feasible sandstone-type thermal storage geothermal tail water reinjection technology process has been successfully explored in Lanzhou Basin, which is of great reference and significance for the large-scale and high-quality development and utilization of geothermal resources in Lanzhou Basin.

Lanzhou Basin  /  sandstone thermal storage  /  reinjection experiment  /  reinjection technology process
Hao-dong LI, Jun-yu ZHU, Hui WANG, Wen-hui LIU, Xing-xiang LIU, Song LI. Analysis and Insights of the Experiment Results of Geothermal Tail Water Reinjection in Sandstone-type Thermal Storage at Pengjiaping, Lanzhou[J]. Science Technology and Engineering, 2025 , 25 (11) : 4438 -4447 . DOI: 10.12404/j.issn.1671-1815.2403514
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Year 2025 volume 25 Issue 11
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Article Info
doi: 10.12404/j.issn.1671-1815.2403514
  • Receive Date：2024-05-13
  • Online Date：2025-07-09
  • Published：2025-04-18
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History
  • Received：2024-05-13
  • Revised：2024-08-01
Funding
Affiliations
    1 Second Geological and Mineral Exploration Institute of Gansu Provincial Geological and Mineral Exploration and Development Bureau, Lanzhou 730020, China
    2 Gansu Hydrogeology and Engineering Geological Survey Institute Co., Ltd., Lanzhou 730020, China
    3 Gansu Provincial Geothermal Resources Exploration and Development Technology Innovation Center, Lanzhou 730020, China
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栓菌属 Trametes 5 2.39
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