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The Geothermal Fluid System and Its Exploitation Engineering Scheme-Taking Kaifeng Area,Henan Province as Example

LIN Xue-yu1, WANG Xin-yi2, LIAO Zi-sheng1   

  1. 1.Institute of Resources and Environment/College of Environment and Resources, Jilin University, Changchun 130026，China;2.Wanfang Science and Technology College, Henan Science and Engineering University, Jiaozuo, Henan 454159, China
  • Received:2008-09-19 Revised:1900-01-01 Online:2008-11-26 Published:2008-11-26
  • Contact: LIN Xue-yu

Abstract: The studied area is a 300-1 600 m deep, low temperature(25-67 ℃) geothermal system in porous deposit in Kaifeng area. Based on the data of 50 geothermal wells with depths ranging from 440-1 580 m existing in the area, the geothermal system is divided into six sub heat-reservoirs. A rational exploitation engineering scheme was used to remedy the field well distribution. Under the designed scheme, the increasing ranging of geothermal water yield from actual field single well can be increased 500-600 m3/d compared with the designed single well (80 m designed water level drawdown) in sub heat-reservoirs, except in the deepest sub heat-reservoir (14 m3/d). The geothermal water output (43 224.0 m3/d) from 49 efficient actual field wells can be increased to 150 744.0 m3/d from 110 wells. During the simulated geothermal water exploitation period (20 years), water temperatures barely change in the heat-reservoir, which means the geothermal water can be exploited sustainably within 20 years.

Key words: low temperature geothermal system, exploitation engineering scheme, Kaifeng area

CLC Number: 

  • P641.8
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