Nozzle for jet drilling

Details Nozzle for jet drilling Nozzle for jet drilling

E - Fixed Constructions

21

B

E21B 7/18 (2006.01) E21B 7/08 (2006.01)

Patent

CA 2480249

A jet nozzle (60) is provided for drilling holes through the earth. The nozzle (60) may include orifices (68) for discharging fluid to drive the nozzle forward and includes a disk (70) or other device having orifices (80) to produce a swirling motion to fluid in the body of the nozzle. Swirling fluid is discharged from a front orifice (74) and an extension (76) is placed forward of the front orifice to confine the swirling fluid in a radial direction.

Cette invention concerne une buse d'éjection conçue pour forer des trous dans la terre, tels que des drains autour d'un puits. Cette buse peut comprendre des orifices servant à décharger un fluide de sorte que la buse soit entraînée vers l'avant et comporte un disque ou un autre dispositif comprenant des orifices servant à imprimer un mouvement tournoyant au fluide dans le corps de la buse. Le fluide tournoyant est évacué par un orifice frontal et une extension est placée à l'avant de l'orifice frontal de sorte que le fluide tournoyant soit confiné dans une direction radiale.

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