Method and apparatus for using multiple jets

Details Method and apparatus for using multiple jets Method and apparatus for using multiple jets

1992-08-11

1994-03-29

Bui, Thuy M.

Boring or penetrating the earth

Processes

Boring with specific fluid

175 67, 175424, E21B 718

Patent

active

052976394

ABSTRACT:
A method of erosive cutting of a hard material such as rock utilizes two spaced clusters of jets for high-pressure discharge of fluid in the course of their movement along the same longitudinal path over the hard material. One of the jet clusters has a fixed orientation for multiple-jet discharge at the hard material, while the other cluster of jets is subjected to oscillating excursions transverse to the direction of the path that both clusters are caused to follow. A cooling medium is directed at the working site between the two clusters. The result is a faster working rate and a more cleanly defined groove in the hard material, along the path of movement.

REFERENCES:
patent: 4221271 (1980-09-01), Barker
patent: 4534427 (1985-08-01), Wang et al.
patent: 4688650 (1987-08-01), Hayadavoudi et al.
patent: 4708214 (1987-11-01), Krawza et al.
patent: 4852668 (1989-08-01), Dickinson, III et al.
patent: 4930586 (1990-06-01), Turin et al.
German Journal "s+t" 42 (1988), vol. 1, p. 30 (Aus der Industrie, Magazin).

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