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Borehole Magnetics Resonance (BMR) is a logging tool that measures the formation porosity of the downhole environment. The tool uses a magnetic resonance technique to measure the water volume contained with the rock structure.


Magnetic resonance has a strong history in the oil and gas industry to better define the reservoir and determine viability of plays. BMR gives the same opportunity in other sectors where water in the rock matrix plays a critical role in the formation.

Hydrogeology: BMR gives a better understanding the petrophysical/geophysical properties of the rocks with a lithology independent measurement of porosity. The T2 distribution can also be used to understand bound and retained water (specific retention and specific yield) and hydraulic conductivity. BMR measurements provide significant additional information to hydrogeological modelling.

Hard Rock Mining: The BMR measurement can be used in conjunction with other logs to determine dry bulk density, resource evaluations and quality, and used as inputs to geotechnical models.


At the moment logging can be done down to depth of 2000 meters. Borehole diameter can vary. The BMR60 probe is openhole up to 186 mm diameter and BMR90 to 312 mm diameter boreholes


Geovisor executes BMR measurements in cooperation with Australian company NMRSA. Measurements are done with NMRSA’s QL40-BMR –probes. More of the method and equipment can be read from NMRSA’s websites: https://www.nmrservices.com.au/


Client will always receive quality assessed raw data from the loggings. Additionally processing, analysis and reporting of the results are executed in cooperation with NMRSA.

Reporting according to request and introduction to the survey results will be done as requested.

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