System and method for drilling using a modulated jet stream

Details System and method for drilling using a modulated jet stream System and method for drilling using a modulated jet stream

E - Fixed Constructions

21

B

E21B 7/18 (2006.01) E21B 7/06 (2006.01)

Patent

CA 2532167

System and method for making a hole (1) in an object, the system comprising jet means for generating an abrasive jet (10) formed of a mixture of a fluid and abrasive particles, and for blasting the abrasive jet with an erosive power into impingement with the object in an impingement area, thereby eroding the object in the impingement area. The system further comprises rotating means for moving the impingement area along a selected circular trajectory in the hole (1) about its circumference, and modulation means for modulating the erosive power of the abrasive jet (10) while the impingement area is being moved along the selected trajectory.

L'invention concerne un système et un procédé pour réaliser un trou (1) dans un objet, ledit système comprenant un moyen de production de jet, servant à produire un jet abrasif (10) constitué d'un mélange d'un fluide et de particules abrasives, et servant à projeter le jet abrasif avec une puissance érosive de sorte qu'il frappe l'objet dans une zone d'impact, provoquant ainsi l'érosion de l'objet dans ladite zone. Ce système comprend en outre un moyen de rotation, servant à déplacer la zone d'impact le long d'une trajectoire circulaire sélectionnée dans le trou (1) autour de sa circonférence, et un moyen de modulation servant à moduler la puissance érosive du jet abrasif (10), tandis que la zone d'impact est déplacée le long de la trajectoire sélectionnée.

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