(under the class definition) Apparatus comprising specific structure for placing a liquid to erode a formation to increase permeability.
SEE OR SEARCH THIS CLASS, SUBCLASS:
101, for devices comprising a packer or plug and a pump or plunger means exerting outward fluid pressure on a conduit surrounding the packer or plug beneath it or between a pair of packers or plugs.
308, for a process of fracturing a formation.
SEE OR SEARCH CLASS
102, Ammunition and Explosives,
301+, for well torpedoes.
299, Mining or In Situ Disintegration of Hard Material, 20+, for an expansible breaking down device for breaking up hard material in situ.
