in combination with tubes, e.g. perforated, extending horizontally, or upwardly inclined, exterior to the pits

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) > by means of pit wells > in combination with tubes, e.g. perforated, extending horizontally, or upwardly inclined, exterior to the pits