Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers (with artificial enrichment E03B3/32 )

Full Title

Methods or installations for obtaining or collecting drinking water or tap water (treatment of water C02F) > from underground > Obtaining and confining water by means of wells (applicable to a combination of water and other liquids or to other liquids only E21B43/00) > Keeping wells in good condition, e.g. by cleaning, repairing, regenerating; Maintaining or enlarging the capacity of wells or water-bearing layers (with artificial enrichment E03B3/32 )