DeviGyro™ – Overshot Xpress
The compact overshot surveying solution
Overshot Xpress offers continuous gyro surveying up to 100m/min whilst retrieving the core tube, minimizing the impact on drilling productivity and maximizing bit-on-face time. The compact design improves handling and operator safety.
Precise, quick and strong as an ‘ox’ !
|Sizes||NWL, HWL & PWL|
|Memory [hours]||6h 40min|
|Operational temperature and storage||-20/+60°C|
|Pressure, 40 mm running gear [bar/psi]||300/4350|
|Survey speed, up to||100 m/min|
|Typical positional accuracy||0.2%|
|Inclination range||-90°− +90°|
|Battery data||1x CR 123a|
|Battery capacity, continuous use||24 hours|
|Baud rate||115000 bps|
|Main areas of use||Wireline core drilling|
*Calibrated for temperature range -10C to +60C
“The OX technology is fantastic! Comprehensive surveying without interrupting the drilling process, driving overall production up and the cost per meter down for our clients”, Geoff Muir, Managing Director of Australian Underground Drilling (AUD)
The Overshot Xpress is an overshot surveying system with a length barely exceeding 120 cm. This short length eases handling overall, and makes the Overshot Xpress a particularly good solution for surveying underground and in other confined areas.
The surveys are performed by lowering the Overshot Xpress down the hole with the wireline at speeds up to 100 m/min. The depth is controlled by the DeviCounter wire counter, and with continuous mode there is no need to stop at predefined survey intervals (multishot surveying).
Survey data is recorded both while the Overshot Xpress is lowered down the drill string and while it is retrieved with the core tube. This gives additional quality control. Surveys can also be merged as the hole progresses.
Wheel based centralizers secures high speed decent while also introducing the patented helix motion for combating drift and misalignment. Centralizers are available for NWL, HWL and PWL, and changing between sizes is done in less than 5 minutes.
- High speed and accuracy surveying
- No angle restrictions
- Fits most common coring sizes
- Wireless communication system with LED indicator
- Intuitive Android software with built in QA processor
- Commercially available battery
- Continuous survey operation
- In-rod surveying – not affected by magnetics
- Same high accuracy in any inclination, direction and location
- Multi-survey processing for additional accuracy
- Automatic and instant quality assurance
- Highly robust and reliable
- Simple and intuitive software
- Wireline Core Drilling
- Continuous surveying
- Multishot surveying
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DeviGyro OX Data Sheet specifications
English version – PDF file