Gyrologic™ Evo | Downhole Directional Survey

The Hidden Cost of Borehole Deviation

Undetected deviations in drilling increase campaign costs, compromise core orientation, invalidate geological models, and pose safety and environmental risks.

Without a reliable trajectory, your data loses value

Every misaligned meter raises operating costs, delays investment decisions, and compromises critical structural studies—not to mention the risk of magnetic interference.

GyroLogic™ Evo: Continuous precision without stopping drilling

GyroLogic™ Evo delivers continuous, accurate borehole profiles directly from the drill string, without rod removal, thanks to fast operation and complete immunity to magnetic interference.

Why choose GyroLogic™ Evo

High-Precision Continuous Directional Surveying

Continuously records borehole direction, capturing dozens of data points per second for maximum accuracy.

Magnetism Immunity

Its advanced gyroscopic technology is immune to magnetic interference, enabling accurate surveys in any environment.

Easy to Operate

Anyone can perform directional surveys from day one, without needing external specialists.

Portable and Rugged

Compact, ergonomic one-piece design for fast deployment in the field.

User-Friendly App

Simplifies data capture and enables QA/QC report export.

Cloud Sync

Uploads records directly to SmartCloud™, ensuring full data custody.

Continuous Gyroscopic Surveying

GyroLogic™ Evo is the ultimate tool for introducing continuous gyroscopic navigation into mineral exploration projects.

Engineered for high accuracy in complex conditions, its magnetic immunity ensures reliability, while its intuitive interface allows drillers to operate it from day one.

With instant results, GyroLogic™ Evo accelerates drilling operations with precise, verifiable data.

Compact and Rugged Design

Machined from a single piece of copper-beryllium, it measures 1 meter long and just 35 mm in diameter, combining light weight (4.5 kg) with high strength.

It features a lithium-ion battery with 12 hours of active surveying, ideal for extended shifts.

Its compact, rugged construction ensures reliable performance even in extreme drilling conditions.

Directional Surveys Performed Inside the Drill String String

GyroLogic™ Evo is a reference gyroscope that requires an initial azimuth to begin continuous directional surveying.

Immune to magnetism, it works without removing the drill string, significantly reducing operating time and increasing meters drilled per hour.

Its continuous surveying technology ensures QA/QC control while capturing dozens of accurate data points per second for maximum structural precision.

All Your Survey Data, Secure and Traceable

With SPT SmartCloud™, directional survey data is automatically stored in the cloud, organized by project and borehole.

Each record preserves the data custody chain, and reports can be generated and downloaded instantly. SmartCloud™ is fast, user-friendly, and fully focused on QA/QC.

Drill Rig Alignment

Directional Survey

Core Orientation

Structural Logging

SmartCloud™

Technical Specifications

Dimensions
Outer Diameter	35 mm (1.38")
Length	1010 mm (39.76")
Weight	4.5 kg (9.92 lbs)

Operational Environment
Depth Pressure	4350 psi
Operational Temperature	-10°C – +60°C (+14°F – +140°F)

Performance*
Azimuth Accuracy	0.16°
Inclination Accuracy	0.05°
Gravity Toolface Accuracy	0.16°
Typical Positional Accuracy	0.2%*
Azimuth Range	0° – 360°
Inclination Range	-90° – +90°

* Accuracy quoted on 1σ
**Subject to borehole profile

Data
Survey Report	At any interval
Communications	Bluetooth®
Export	SPT SmartCloud via WIFI or 4G LTE
Export Format	PDF, Excel, CSV, LAS, DXF
Graphic Generation	2D, 3D