Reflex Instruments Asia Pacific Pty Ltd

Cory Bryce Wilson

Christopher Thomas Koplan

Timothy M Price

Christopher Pell

Erik D Gutterud

David Lawie

John Jackson

Gregory W Hollister

Frederick Blaine

Joel Hitchen

Dennis Buckley

A sensor gimbal system employs one sensor gimbal on which a sensor is mounted. The sensor gimbal is configured to orient a sensitive axis of the sensor with respect to a survey instrument. A sensor motor assembly is configured to rotate the sensor gimbal between a first hard stops and a second hard stop. A dowel pin extends from the mating bevel gear to engage the hard stops. A flex circuit has a flex cable from a sensor PCB, on which the sensor is mounted, to an electronic circuit board.

Survey instrument

A drill hole logging system () incorporates a computing system () at the surface and a deployment mechanism () for conveying a logging tool () configured to measure one or more geophysical parameters into a drill hole (). A transmission means () communicates commands and data representing the geophysical parameters between the surface computing system and the logging tool. A borehole caliper () is employed to profile the inside of the borehole.

Fit for purpose measurement system for drill hole logging

A magnetic susceptibility and conductivity tool () which incorporates a transmitter coil () energized with a time-varying current from a transmitter coil drive (). The transmitter coil drive receives a clock signal and induces a data signal () including a primary mutual coupling signal and a formation coupling signal. A receiver coil () outputs a receiver coil voltage induced by the data signal. A transmitter coil current sense circuit () receives current from the transmitter coil and outputs a digital coil current voltage signal. A synthetic null circuit () receives the digital current voltage signal and multiplies the digital current voltage signal with a predetermined constant () for amplitude of a base primary mutual coupling signal and shifts phase with a predetermined phase offset () to output a synthetic null signal ().

Magnetic susceptibility and conductivity module

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Atascadero, CA, United States of America

Cory Bryce Wilson