At present, most of the deep water wells are dug under the pipe, which is also a relatively safe method. Tools are mainly pneumatic pick, water pump and small hoist. Deep water well refers to a well for obtaining deep groundwater, which is usually common in arid areas such as northwest China. The definition is mainly used to obtain deep groundwater, that is, water below 20 meters underground. ① The drilling depth is 20m-300m. ② The water intake is 1-100 tons per hour. (3) The water temperature is about 17 degrees, which is widely used for production, life and factory cooling. (4) The deep well is concealed and does not occupy the site, the wellhead diameter (1030 cm) and the construction conditions are not high. The deep well pump is used to lift water, which can supply water all the year round, and the deep well water can replace the expensive tap water.