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Conversion method of equivalent drawdown during pumping test of single geothermal well
Pages: 36-40
Year: Issue:  2
Journal: Geotechnical Investigation & Surveying

Keyword:  densityborehole bottom pressurepumping testconversionequivalent drawdown;
Abstract: The traditional calculation of hydrogeological parameters is based on constant groundwater density. For hot water,both in natural status or in the pumping process,due to borehole inner density differences caused by the water temperature change,the process of well water level variation should not refer to the same groundwater density. According to the measured data of the well water level,the bottom pressure of the borehole is calculated,and the equivalent drawdown on the same density can be calculated by the conversion method,which lays the foundation for the calculation of the parameters. Based on the former experiences,the conversion method of equivalent drawdown is described in this paper.
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