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US 6,668,948 B2Granted
Nozzle for jet drilling and associated method
AssigneeBuckman Jet Drilling
InventorsWilliam G. Buckman, Sr., Thomas L. Dotson, Michael D. McDaniels, Wendell S. Bell
Life of this patent
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Abstract
A jet nozzle is provided for drilling holes through the earth, such as drainholes around a well. The nozzle may include orifices for discharging fluid to drive the nozzle forward and includes a disk or other device having orifices to produce a swirling motion to fluid in the body of the nozzle. Swirling fluid is discharged from a front orifice and an extension is placed forward of the front orifice to confine the swirling fluid in a radial direction.
Claims23
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.
2 more elements
A method for drilling through the earth, comprising:
- providing a nozzle, the nozzle having a body, the body having an inflow end and an outflow end, the inflow end being attached to a tube for pumping a fluid therethrough, a device within the body for imparting a swirling motion to the fluid passing through the body before the fluid is discharged through a front orifice of the body, the front orifice having a diameter, and an extension attached to the outflow end of the body at the front orifice for confining the fluid in a radial direction, the extension having an internal surface, the internal surface having a diameter greater than the diameter of the front orifice;
- and
- placing the nozzle in a selected location where a hole is to be drilled and pumping the fluid through the nozzle and the tube.
Dependencies are inferred from the claim text.