PDC Bits and Rotary Steerable Tools - Functional Challenges, Stabilization Requirements and the Establishment of Operational Compatibility

Abstract

fax 01-972-952-9435. AbstractThe introduction of rotary steerable tools 1,2 (RST) has drastically changed how the drilling industry plans and executes directional drilling projects. These tools address most of the technical and operational limitations, which previously hindered directional drilling efficiency. With RSTs, changes to wellbore trajectory are made while the drill string is in continuous rotation. This advantage improves wellbore quality, hole cleaning and Rate of Penetration (ROP). It also reduces well bore tortuosity, torque and drag, and eliminates the harmful effects of "negative weight on bit", especially on extended reach 3 (ERD) programs.