An abrasive cutting or drilling system, apparatus and method, which includes an upstream supercritical fluid and/or liquid carrier fluid, abrasive particles, a nozzle and a gaseous or low-density supercritical fluid exhaust abrasive stream. The nozzle includes a throat section and, optionally, a converging inlet section, a divergent discharge section, and a feed section.
D. A. Summers et al., "Method and Apparatus for Jet-Assisted Drilling or Cutting," U.S. Patents, Sep 2012.
Patent Application Number
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04 Sep 2012