Resource Exploration: Magnetotellurics and Electromagnetics
Magnetotellurics (MT) and Electromagnetics (EM) are used in exploration for almost any resource. This includes:
- Oil and Gas
- Geothermal
- Minerals
- Water
- HVDC Transmission Lines
Within these targets, applications of MT and EM include:
- Basin or lease reconnaissance
- Prospect/Target definition
- Reservoir monitoring
- EOR
Magnetotellurics is particularly useful for:
- Overthrust plays: High-resistivity/High-velocity rocks thrust over clastics or lower-resistivity rocks
- Limestone or Volcanic cover over sedimentary section
- Geothermal mapping of alteration cap/zone and thickness of volcanic cover
- Mapping of conductive mineralized zones, such as sulfides
- Determination of aquifer extent and depth
- Premium location for ground electrodes of HVDC lines, so that current is dispersed and non-interfering
Electromagnetics is best suited for:
- Mapping of reservoirs in sedimentary basins
- Determining position of water or other floods in producing fields
- Mapping mineralization, almost any type
- Reconnaissance of large mineral leases, via airborne surveys
- Definition of Aquifer depth and extent
- Near-surface mapping for many other applications such as UXO, archaeology, forensics, construction
Both MT and EM can be done
- Offshore or onshore
- Airborne
- Land - via foot, truck, ATV, horse, etc.
- Shipborne
We provide consulting and pre-survey modeling to determine the applicability of either MT or EM to a given project.