Method and apparatus for laser treatment of geological...

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

E - Fixed Constructions

21

B

255/10, 327/116,

E21B 7/00 (2006.01) B23K 26/14 (2006.01) B23K 26/40 (2006.01) E21B 7/15 (2006.01)

Patent

CA 1080120

METHOD AND APPARATUS FOR LASER TREATMENT OF GEOLOGICAL FORMATIONS ABSTRACT OF THE DISCLOSURE 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 con- taminants 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.

285067

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