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Title Circulatory disturbance-preventing open well hole technology using return pipe header in geothermal hole
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Attached File 2._Chapter_10(G&G_Tech).pdf  File Download Date 2019-05-20
Contents
◎ Overview of the technology
A return pipe is installed with space for groundwater passage in the space between the geothermal hole and internal casing down to the bottom of the geothermal hole, with a water return pipe connected to the return pipe header to ensure nominal groundwater circulation even in the event of a geothermal hole cave-in.


For more information, see the attached file.

 
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