The relative permittivity or dielectric constant (DC) is a fundamental property of materials controlling how electromagnetic radiation is transmitted and reflected. ADR is a technique utilising radio wave frequencies for remotely sensing DC changes in the subsurface with m-scale resolution to depths of several km
Image Credit: https://archive.epa.gov/esd/archive-geophysics/web/html/dielectric_permittivity.html
Image Credit: https://archive.epa.gov/esd/archive-geophysics/web/html/dielectric_permittivity.html
PETEX 2018: ADR Case study Onshore UK
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A separate page discusses the onshore UK application of this new EM technique, as presented with a poster at PETEX 2018. The poster and associated information is available for download there. More information is on Adrok's website www.adrokgroup.com.
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Remote sensing of geological boundaries without seismic or drilling, to m-scale resolution and km scale depth
Since June 2017, PAETORO has been working as an independent reviewer with Adrok Ltd to review their patented atomic dielectric resonance tool for subsurface exploration. Where previous electromagnetic techniques tend to either be deep but low resolution (e.g. CSEM) or high resolution but shallow (e.g. ground penetrating radar), ADR is a fundamentally different technique which aims to retain both deep penetration and metre scale resolution of important geological contacts. The tool is being trialled in an onshore geological setting and PAETORO is working closely with Adrok to understand tool responses further and develop more effective workflows for its application. For more information see the Adrok Ltd website and the blogs below.
Example of some ongoing ADR work by Paetoro in an onshore UK setting - Curve A is normal GR, Curve B is a metric derived from the scanner's various curves.