Patent ID: 6626254
Filing Date: 2003-09-30
Classification: E21B

Abstract:
A coiled tubing conveyed drilling assembly for use in drilling of a wellbore, comprising:(a) a drilling motor for generating a rotary force in response to the flow of a drilling fluid through the drilling motor; and (b) a steering device integrated into the drilling motor for altering the drilling direction of the drilling assembly, said steering device including: (i) a plurality of force application members arranged around a section of the drilling motor, each said force application member extending radially outward from the drilling motor to apply force to the wellbore inside, upon the application of power thereto; (ii) a separate power unit operably coupled to each force application member, said separate power units being disposed in said drilling motor and supplying power to an associated said force application member; and (iii) a separate control device for controlling the supply of the power to the force application members.