Magnetic survey, Gravity survey, IP survey, Spectrometer survey, Seismic survey, Geodetic survey

IP survey

Subsurface rock layers possess variable electrical properties and are considered a very useful geophysical parameter to measure that will indicate or characterize the earth's lithology. Variations in electrical resistivity [or conversely, conductivity) typically correlate with variable water saturation fluid conductivity, porosity, mineralization, and/or permeability in rocks. Data acquisition involves deployment of an array of regularly-spaced electrodes. Resistivity or induce polarization data are then recorded via complex combinations of cur­rent and potential electrode pairs to build up pseudo cross-sections of apparent resistivity beneath the survey lines. The depth of investigation depends on the electrode separation and geometry, with greater electrode separations yielding bulk resistivity measurements to greater depths. Modeling software programs are then used to invert the measured data to generate true subsurface resistivity images.


Resistivity Map
Chargeability Map
Metal factor Map
Inverted Section Maps


Iris instruments:
Elrec Pro, VIP 3000, VIP 10000

GDD instruments:
Sample core IP tester