FIELD: oil-and-gas producing industry. SUBSTANCE: method may be used in production of oil, gas, etc., in exploration of oil and gas fields, and in earth drilling for investigation purposes. Distinguishing feature of the method is the fact that joining of drill pipes to one another and their disconnection in the course of drilling are carried out for one revolution by one laser beam tool and without interruption of drilling process. EFFECT: higher productivity and reliability of drilling equipment. 2 cl, 2 dwg
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