Laser liner creation apparatus and method

Details Laser liner creation apparatus and method Laser liner creation apparatus and method

2005-02-08

2005-02-08

Tsay, Frank (Department: 3672)

Boring or penetrating the earth

Boring without earth removal

C175S011000

Reexamination Certificate

active

06851488

ABSTRACT:
A method and apparatus for forming an in situ borehole liner in which a laser beam from a laser energy assembly disposed within a transparent drill head enclosure of a drill head assembly is directed into a rock formation to be drilled and a portion of the rock formation is melted, forming molten rock. The drill head assembly is directed into the molten rock forming a borehole having a borehole wall. At least one air stream from the drill head assembly is directed into the molten rock forming the molten rock against the borehole wall after which the molten rock against the borehole wall is cooled, forming a borehole liner.

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