US Patent 9080413 Downhole pressure nozzle and washing nozzle

A nozzle apparatus that can be inserted downhole into a well casing has an attachment component at an open end of a hollow cylinder that is in communication with a pressurized liquid supply source. The hollow cylinder extends from the attachment component and has a closed end. A plurality of apertures extend from an interior surface of the hollow cylinder to an outer surface of the hollow cylinder sides. The outer surface of the nozzle cylinder can be uneven. The outer surface of the nozzle cylinder can have an unequal radius. The nozzle surface can contain bypass slits. In one embodiment the nozzle can have a threaded attachment component at the bottom. A scraper or other cleaning device can be attached to the threaded component.