DeviGyro^™— Non-magnetic survey with high speed and accuracy

Benefits

Continuous survey operation
In-rod surveying – not affected by magnetics
No angle restrictions
Same high accuracy in any inclination, direction and location
Multi-survey combining for additional accuracy
Automatic and instant quality assurance
Highly robust and reliable
Simple and intuitive software

APPLICATIONS

• Diamond Core Drilling

• Reverse circulation (RC)

• Blast & injection holes

• Pilot holes

• Oil & Gas

• Continuous surveying

• Multishot surveying

• Overshot mode

• DeviHead mode

• Core orientation

The DeviGyro is a brand new non-magnetic survey instrument providing high speed, continuous downhole surveying in a small and versatile package.

Designed with convenience and ease of use for drillers in mind, this cutting edge rate gyro system utilizes a complex navigational algorithm to deliver the high accuracy and standard of quality assurance required by our customers.

The extremely small size of the DeviGyro opens for utilization in wide range of applications. Currently it is supplied as a small standard surveying tool that surveys the hole as it is lowered and retrieved by the wireline at speeds over 100 m/min, making it very suitable for diamond core drilling and RC drilling. Non-continuous survey is also possible, supporting blast hole surveying and foundation drilling. Support for other applications, like overshot, core barrel head and core orientation will soon follow.

The DeviGyro comes equipped with a rugged handheld device and is operated by a user friendly Android application.The communication between the instrument and the handheld device is wireless and also functions through the pressure barrel due to Devico’s patented antenna technology.

The data from the DeviGyro passes through a complex processing algorithm that ensures the accuracy and repeatability is always high, independent of the drill holes direction, inclination and position. An automatic and stringent quality control with a pass/fail criteria gives the user additional confidence the survey data is of the highest possible accuracy.

North Seeking Package
Combined with the DeviAligner (surface & underground) or DeviSight (surface) the DeviGyro
becomes a very powerful north seeking package that secures superior accuracy even in high latitude
locations. See respective brochures for further information on DeviAligner and DeviSight.

Spécifications

Weight, without running gear [kg/lbs]	0.2 /0.5
Diameter, without running gear [mm/in]	25 /1
Length, without running gear [mm/in]	140 /5.5
Memory [hours]	6h 40min
Operational temperature and storage	-20/+60°C
Pressure, 40 mm running gear [bar/psi]	300/4350
Recommended survey speed	60 m/min
Magnetic	No
Running gear	Required
Azimuth accuracy	±0.1°/100m
Typical positional accuracy	0,2%
Inclination accuracy*	±0.1°
Toolface accuracy*	±0.2°
Temperature	Recorded
Azimuth range	0°-360°
Inclination range	-90°− +90°
Battery data	1x CR 123a
Battery capacity, continuous use	24 hours
Data communication	Wireless
Baud rate	115000 bps
Main areas of use	Inside rod string Open hole survey Core drilling RC drilling Blast hole