Patent ID: 6917202
Filing Date: 2005-07-12
Classification: E21B,G01V

Abstract:
1. In a system for tracking a boring tool that is configured for transmitting a dipole locating signal within an underground region where movement of the boring tool is characterized by certain orientation parameters including pitch and yaw and which system is configured at least for establishing the pitch and yaw orientation of the boring tool, a method comprising the steps of accepting a target position to which the boring tool is to be guided including a target pitch orientation and a target roll orientation; measuring the locating signal at a receiving position as well as the pitch and yaw orientations of the boring tool; and generating steering commands for use in guiding the boring tool to the target location using measured values of the locating signal taken at the receiving position, measured pitch and yaw orientations of the boring tool, the target pitch orientation and the target yaw orientation.