Patent ID: 6668948
Filing Date: 2003-12-30
Classification: B05B,E21B

Abstract:
A nozzle for jet drilling, comprising:a body having an inlet end and an outlet end, the inlet end having a connector mechanism thereon, the body having a longitudinal axis and forming an inlet chamber adjacent the inlet end; a disk for imparting swirling motion to the fluid inside the body, the disk disposed between the inlet chamber and a second chamber, the second chamber having an outlet, the disk having a plurality of orifices therethrough, at least one of the orifices being directed at a selected tangential angle with respect to the longitudinal axis for imparting a swirling motion to fluid in the second chamber; a front orifice forming the outlet of the second chamber, the front orifice having a selected diameter; and an extension affixed to the outlet end of the body, the extension having an interior surface for confining fluid in a radial direction, the interior surface having a diameter greater than the diameter of the front orifice.