A.M.Zabelin, G.Y.Mikylshin.

The proposed technique of wells drilling can be used at production of oil, gas etc., at reconnaissance oil- and gas fields, and also at ground drilling in the research purposes.

Distinctive feature of a technique is that during drilling realize sequential one-piece joining by laser welding of boring tubes to a boring column as a drill leaves on depth and sequential detachment by a laser cutting of boring tubes from a boring column at a drill outlet to a surface after drilling. Laser welding of boring tubes carry on simultaneously with drilling, realizing screw rotating of boring tubes around own axis, and a laser beam during welding is let down during a lowering of boring column.