DEVICE FOR COMBINED MECHANICAL AND THERMAL EXPANSION OF WELLS
FIELD: mining.SUBSTANCE: device for combined mechanical and thermal expansion of wells includes a drilling rig with rock destructing elements, a burner with fuel and air supply lines, which is arranged in the end face of the rig, a unit for dust and gas suppression with a built-in pipe for removal o...
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Format: | Patent |
Sprache: | eng ; rus |
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