FIELD: mining.
SUBSTANCE: drilling assembly includes core tube connected to heating source of the broken rock. As the heating source there used is laser, and assembly is equipped with cylindrical drilling bit with heat-resistant cutters, rod cable the lower part of which is connected to upper part of core tube by means of adapter, and swivel connected to upper part of rod cable and equipped with extractor of laser emission, which is connected to cylindrical drilling bit by means of fibre-optic cable.
EFFECT: increasing drilling efficiency of wells of various purpose in hard mine rocks.
2 dwg
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