DIRECTIONAL DRILLING METHODS AND SYSTEMS EMPLOYING MULTIPLE FEEDBACK LOOPS

摘要

A directional drilling system includes a bottomhole assembly having a drill bit and a steering tool configured to adjust a drilling direction in real-time. The system also includes a first feedback loop that provides a first steering control signal to the steering tool, and a second feedback loop that provides a second steering control signal to the steering tool. The system also includes a set of sensors to measure at least one of strain and movement at one or more points along the bottomhole assembly during drilling, wherein the first and second steering control signals are based in part on the strain or movement measurements.