System for tracking and maintaining on on-grade horizontal...

Boring or penetrating the earth – Processes – Boring curved or redirected bores

Reexamination Certificate

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C175S045000

Reexamination Certificate

active

07896107

ABSTRACT:
A tracking receiver system is used to track the progress of a downhole tool along a subsurface path having a desired grade. The tracking receiver system is adapted to detect a reference line originating from a reference line receiver and to determine the position of the downhole tool along a desired subsurface path relative to the reference line. In an alternative embodiment the tracking receiver system may comprise a global positioning satellite system to provide information used to determine the position of the downhole tool relative to the desired subsurface path.

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