SixGyro: drilling deviation measurement
The small dimensions of the probe (22 mm diameter, 700 mm long and approx. 4 kg in weight) make it easily handleable by a solo operator.
The measurement step is operator-defined. The measurement process is fast (approximately 15 minutes for a 30-metre borehole in 1-metre steps).
As with most deviation systems, the azimuth start point must be measured by other means (topographically, GPS, etc.) and entered into the system.
Device accuracy (supplier data): 0.1° in inclination (0.2%); 0.5° in azimuth (0.9%).
Ultimate measurement accuracy depends on the accuracy of the device, the accuracy with which the azimuth start point has been measured, and the positioning of the probe within the borehole.