The utility model relates to the field of construction and can be used for sinking wells by self-screwing equipment into the ground with drilling and displacing the soil to the sides of its array with the possibility of changing the trajectory of movement in space. The technical result is the ability to change the direction of formation of the well. The leader, made in the form of a conical part of the screw with a screw blade placed on it, and an expander with lugs located on the outside and an engine located inside it, the output shaft of which is connected to the leader, the pointed part of which is made in the form of a tapered conical tip with cutters located on beveled side of the tip. In this case, the pointed part of the leader in the form of a tapered conical tip with cutters is connected to the leader by a clutch with the possibility of rotation of the leader relative to its pointed part. 1 ill.
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