a method of well completion in which a slotted or perforated liner is placed in the well and surrounded by small sized gravel. The well is enlarged by under-reaming at the point where the gravel is packed. The mass of gravel excludes sand from intruding in the well but allows continued rapid production.Using gravel to fill the cavity created around a well bore as it passes through the producing zone to prevent caving or the incursion of sand and to facilitate the flow of oil into the well bore.
