Dynamic Features in Deep Geothermal Wells in Tianjin
详细信息
- 责任者：Zhao Jingbo (School of Water Resources and Environment ; China University of Geosciences ; Beijing 100083 ; China) ; Zhou Xun
- 刊名：Geoscience
- 出版年：2011
- 卷期：25(2)
- 关键词：地下热水 ; geothermal water ; 水力学 ; hydraulics ; 天津 ; Tianjin
- 页码：p.363-369,392
- 图表：10 illus., 1 table, 13 refs.
- 分类号：1005
- issnNo：ISSN1000-8527
- isbnNo：CN11-2035/P
摘要
The wellhead temperature of part of deep geothermal wells in Tianjin in the pumping process is higher than the water temperature before pumping and the density of thermal water decreases. In this paper, the conversion formula of well bottom pressure is adopted to analyze the measured data and a laboratory test is established to simulate the regular pattern of water level of a thermal well. The dynamic water level and static water level can approximately be calculated according to the average well bottom pressure during pumping and the stopping pumping conditions last year. The results show that in pumping condition the well bottom pressure is smaller than that prior to pumping and the water level is mainly affected by the number of geothermal wells, the calculating formula of the well bottom pressure, geological structure, geothermal injection and other factors.