Long range data transmitter for horizontal directional drilling

Details Long range data transmitter for horizontal directional drilling Long range data transmitter for horizontal directional drilling

2005-11-29

2005-11-29

Williams, Hezron (Department: 2856)

Measuring and testing

Borehole or drilling

During drilling

C324S342000, C340S854400

Reexamination Certificate

active

06968735

ABSTRACT:
An apparatus for monitoring conditions in subterranean borehole during drilling and pullback operations in real time. The apparatus includes a drill string having a working end. A measurement system suitable for measuring at least one operational characteristic of the apparatus and having a metallic section in direct contact with the drill string is operably connected to the working end of the drill string. At least one toroid is circumferentially disposed around a first portion of the metallic section and has toroidal electrically conductive windings. A non-conductive material is disposed around the toroid whereby contact between the toroid and a subterranean environment during operation of the apparatus is precluded.

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