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Application of pump suction reverse circulation drilling technology in the construction of radial wells

¡¡¡¡Abstract£ºThe riverside aquifer is closely related to the hydraulics of the river water, and can provide sufficient water volume and excellent water quality. Radiation well is an efficient development mode for water intake by river, and vertical well is the place where horizontal radiant pipe is constructed, water collection and water pump installation, and it is the precondition for well completion. Pumped reverse circulation drilling has the advantages of high drilling efficiency, little damage to the drill bit, reflecting the geological conditions of the stratum, etc. It is suitable for drilling large-diameter holes in the loose strata of the Quaternary system. This paper introduces the pumping reverse circulation drilling technology of radial well vertical well in detail, and improves the drill bit form on the basis of traditional drill bit to expand the scope of application of the drilling process. Three representative radial well vertical wells in water source areas are listed by examples. In terms of drilling application, pump suction reverse circulation drilling can achieve good footage, and it plays a huge role in vertical well drilling of radiation wells.

¡¡¡¡Keyword£ºPump suction reverse circulation drilling; Radial well; Vertical shaft; Drill bit;

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