The purpose of the charging potential method (Fr. Mise-à-la-Masse MAM/MALM) is to investigate the size and geometry of a conductive structure. The method can also be used to trace the course of the conductive structure. The conductive structures being investigated are ore bodies and water-bearing fractured zones.
In these measurements, current is injected into a pair of electrodes, one of which is located within the conductive body (e.g., an ore body or a fractured zone), and the other is effectively at a distance. As a result, the electrical potential generated around the target is mapped by measuring the voltage between movable separate electrodes, either on the surface or in a borehole.
The measurement data can be used to determine, for example, the electrical continuity between ore bodies, delineate the extent of fracture zones, and identify, for instance, graphite-rich units prone to instability.
The data quickly provides an understanding of the target's geometry and the relationship between different targets. The method is most effective when used in conjunction with other geophysical methods.
The Mise-à-la-Masse (MAM) technique relies on the measurement of the electric potential field and does not exhibit a depth of investigation directly related to electrode spacing. The effective depth of investigation is governed by the electrical conductivity contrast between the target and the host rock, the injected current amplitude, electrode contact resistance, and other factors.
The method is applicable to deep boreholes as well.
The survey equipment is selected according to the target being studied and the objectives.
The customer always receives quality-assured raw data from the measurements. In addition, we carry out data processing, analysis, and reporting as agreed.
Reporting at the agreed level and customer familiarization with the research results are carried out as agreed.
