Method and means for controlling the course of a bore hole.

摘要

The invention relates to a method and means for controlling the course of a bore hole during drilling thereof. The means comprises a down-hole motor and at least two stabilizers mounted on the housing of the down-hole motor wherein at least one of said stabilizers is mounted eccentrically on the motor housing. Controlling the course of a bore hole that is being drilled with the down-hole motor driving the drill bit is done by successively not rotating the drill string and rotating the drill string.