Method and apparatus for jet-assisted drilling or cutting

Details Method and apparatus for jet-assisted drilling or cutting Method and apparatus for jet-assisted drilling or cutting

E - Fixed Constructions

21

B

E21B 7/18 (2006.01)

Patent

CA 2718045

An abrasive cutting or drilling system, apparatus and method, which includes an upstream supercritical fluid and/or liquid carrier fluid, abrasive particles, a nozzle (10) and a gaseous or low-density supercritical fluid exhaust abrasive stream. The nozzle (10) includes a throat section (2) and, optionally, a converging inlet section (1), a divergent discharge section (3), and a feed section (12).

Linvention concerne un procédé, un appareil et un système de coupe ou de meulage abrasif qui comprennent un fluide supercritique amont et/ou un fluide porteur de liquide, des particules abrasives, une buse (10) et un courant abrasif déchappement à fluide supercritique gazeux ou de basse densité. La buse (10) comprend une section de gorge (2) et, éventuellement, une section dadmission convergente (1), une section dévacuation divergente (3) et une section dalimentation (12).

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