Christopher Nind

VP Business Development
Abitibi Geophysics

Borehole gravity for mining applications has been commercially available for over a decade using the Gravilog probe developed and built by Scintrex. Several improvements to the Gravilog probe have been incorporated since the original tool was successfully tested in Sudbury in 2007, most notably to shorten the time required for levelling and the sensor recovery after tripping. It is now reasonable to expect to complete a Gravilog survey of a 1 km borehole in less than one day.

Integration and inversion of gravity data acquired in multiple boreholes and on the surface is needed for an understanding of the measured anomalous responses. Recent development of a quick and intuitive interpretation software package, GeoTk, at Abitibi Geophysics is now available and successfully tested. Gravity data acquired in multiple borehole can be inverted with or without integrating surface data, with the option of integrating prior geological and geophysical information as constraints.

GeoTk inversion of gravity data acquired in multiple boreholes at the Coulon deposit in Quebec and the Lalor deposit in Manitoba will be presented in this talk. If time permits, the results of a multi hole Gravilog survey completed in November 2019 on a Sudbury deposit will also be shown.


14.04.2021 14:00 - Technical Session 1 | Sary Arka 1 Hall

Success from Innovation: Inversion of Borehole Gravity data using GeoTk

Borehole gravity for mining applications has been commercially available for over a decade using the Gravilog probe developed and built by Scintrex.  Several improvements to the Gravilog probe have been incorporated since the original tool was successfully tested in Sudbury in 2007, most notably to shorten the time required for levelling and the sensor recovery after tripping.  It is now reasonable to expect to complete a Gravilog survey of a 1 km borehole in less than one day.

Integration and inversion of gravity data acquired in multiple boreholes and on the surface is needed for an understanding of the measured anomalous responses.  Recent development of a quick and intuitive interpretation software package, GeoTk, at Abitibi Geophysics is now available and successfully tested. Gravity data acquired in multiple borehole can be inverted with or without integrating surface data, with the option of integrating prior geological and geophysical information as constraints.

GeoTk inversion of gravity data acquired in multiple boreholes at the Coulon deposit in Quebec and the Lalor deposit in Manitoba will be presented in this talk.  If time permits, the results of a multi hole Gravilog survey completed in November 2019 on a Sudbury deposit will also be shown.