
A borehole before the borehole.
Depth-resolved subsurface intelligence acquired from the surface — designed to improve the decision before the drill.
One surface location. Thousands of metres of subsurface intelligence.
A Virtual Borehole turns surface-acquired ADR measurements into a depth-resolved interpretation designed to help identify and rank what deserves further investigation.
Surface location
Choose the target station.ADR acquisition
Collect subsurface responses from the surface.VEXRAD processing
Process signals and derive interpretable parameters.Virtual Borehole
Create a depth-resolved subsurface profile.Ranked targets
Identify intervals for further investigation.Drill decision
Use the evidence to inform the next step.A depth-resolved picture of your target.
This is real VEXRAD project output — not a conceptual illustration. The Virtual Borehole combines depth, interpreted ADR lithology and target confidence into a vertical view designed around the questions that matter to the project.
Depth model
A depth-resolved interpretation of changing subsurface responses.
Target intervals
Intervals that warrant additional investigation or prioritisation.
Confidence
Interpretation presented with uncertainty rather than certainty.
Evidence classification
Validated · Grounded · Candidate · Known Null.
Lithology & boundaries
Where data quality, calibration and evidence support geological interpretation.
Decision-ready report
Results, limitations, evidence strength and recommended next steps.
The important test is what happens when you drill.
VEXRAD compares Virtual Borehole predictions with independent ground truth wherever suitable evidence is available.
One Virtual Borehole investigates depth. Multiple Virtual Boreholes investigate the target.
A network of surface stations can help explore lateral continuity, correlate interpreted horizons and rank locations for further investigation.
What a Virtual Borehole does — and does not — claim.
ADR can help identify
- Lithology and formation boundaries
- Structures and subsurface changes
- Target intervals
- Reservoir indicators
- Subsurface anomalies
- Priorities for further investigation
ADR does not guarantee
- Assay grade
- Resource or reserve estimates
- Permeability
- Flow rate
- Commercial discovery
- Drilling success
Different targets. The same question: where should we investigate next?
Geothermal
Where is the reservoir?
Lithology · reservoir intervals · structures · thermal indicators.
Critical minerals
Where should we drill first?
Host geology · structures · mineralisation indicators · target depth.
Water
Where should we investigate?
Aquifer indicators · lithology · structures · depth.
Find out whether ADR fits your target.
Before committing to a survey, VEXRAD can assess the geology, target, available data and what a Virtual Borehole programme could realistically help resolve.
ADR Opportunity Report · £2,500 fixed · 10 working days
