Method and apparatus for laser treatment of geological formation

Details Method and apparatus for laser treatment of geological formation Method and apparatus for laser treatment of geological formation

1976-09-03

1978-05-23

Purser, Ernest R.

Boring or penetrating the earth

Boring by directly applying heat to fluidize or comminute

Electrically produced heat

219121L, 299 14, 350 55, 350 9610, 350179, E21B 700

Patent

active

040905721

ABSTRACT:
A method and apparatus are disclosed for drilling gas, oil or geothermal wells in geological formations and for "fracing" the pay zones of such wells to increase recovery, using a laser beam projected into the well bore along a beam guide so as to make available laser energy adequate to melt or vaporize the formation under down-hole conditions. Fluid circulation is established via the beam guide to keep the beam path adequately free of contaminants to permit drilling. A novel orifice window is provided to allow transmitting the high energy beam from the surface into a high-pressure, down-hole environment.

REFERENCES:
patent: 2730004 (1956-01-01), Badger et al.
patent: 3493060 (1970-02-01), Van Dyk
patent: 3558891 (1971-01-01), Kaiser
patent: 3598472 (1971-08-01), Kaiser
patent: 3693718 (1972-09-01), Stout
patent: 3977478 (1976-08-01), Shuck
patent: 3998281 (1976-12-01), Salisbury

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