Earth boring method employing high powered laser and alternate f

Details Earth boring method employing high powered laser and alternate f Earth boring method employing high powered laser and alternate f

1974-11-20

1976-12-21

Purser, Ernest R.

Boring or penetrating the earth

Boring by directly applying heat to fluidize or comminute

Electrically produced heat

299 14, E21B 714, E21C 2100

Patent

active

039982815

ABSTRACT:
A method of earth boring, useful for oil well drilling and the like, employs a high powered laser beam focused and directed by appropriate optics and/or scanning means to a vertically downwardly directed annular pattern. A fluid blast means directed generally into the bore hole is disposed adjacent the beam between the earth and the optics or scanning means. The beam and fluid blast are alternately pulsed and the fluid blast is effective to create thermal shock in the core to shatter it and to deflect material cleared from the hole by the laser beam away from the boring apparatus.

REFERENCES:
patent: 914636 (1909-03-01), Case
patent: 2548463 (1951-04-01), Blood
patent: 3539221 (1970-11-01), Gladstone
patent: 3544165 (1970-12-01), Snedden
patent: 3556600 (1971-01-01), Shoupp et al.
patent: 3693718 (1972-09-01), Stout
patent: 3882945 (1975-05-01), Keenan
"Novel Drilling Techniques," by Wm. C. Maurer, Mar. 1968, N. Y. Pergamon Press.

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