Applications

The MTU-RT is a connected broadband Magnetotellurics instrument. It permits applications not previously available with the MTU-5A because of the lack of connectivity.

With the increasing amount of MT measurements performed every year, instant access to the data and equipment status is very useful, with potentially significant cost savings.

MTU-RT 4 DAYS SPECTROGRAM SHOWING A PERTURBATION IN THE MAGNETICS RECORDING AT DAY 3

This connectivity opens the door to new applications, such as new approaches to MT signal monitoring and more widespread use of permanent remote reference.

A magnetotellurics remote reference station is usually installed at least 20 km away from the survey area in an electromagnetic environment than has a different noise spectrum than the survey area. Remote reference data processing can dramatically improve results.

Remote reference processing is now standard for all MT applications: research, environmental, groundwater, mining, geothermal and hydrocarbons.

The MTU-RT is the perfect remote reference station alternative : it does not need to be serviced, it continuously acquires data, and always delivers data to camp.

Lower operating costs

Remote Reference for both AMT and MT with one station only

Can be installed tens to hundreds of kilometers away, on a different island, etc

Fluid Injection Monitoring image
Source: Energy Information Administration, Geothermal Energy in the Western United States and Hawaii: Resources and Projected Electricity Generation Supplies, DOE/EIA-0544

Both conventional geothermal reservoirs (REFERENCE : Phoenix Japan project, 1999ff) and enhanced geothermal systems (EGS) (Reference: Peacock et al) have successfully used MT for mapping and time-lapse monitoring of fluid injection.

This 4D application requires repeated deployment (or a single long-term deployment) of an array of surface MT stations – for which the MTU-RT is ideal.

The MTU-RT can harvest all the data in real time; and, with solar power, there is no need for an operator to routinely visit the site – a significant cost saving.

Research is currently under way to determine the utility of MT for hydrocarbon frac monitoring.

Monitor effects of fluid injection

Add MT data to seismic and microseismic

Multiple time-lapse datasets available

Magnetotellurics measurements are extensively used for research applications that requires long term deployment and autonomous operations: Deep earth mapping with AUSLAMP, crustal and lithospheric observatories with US ARRAY, Integrated Plate Boundary Observatory in Chile etc…

The MTU-RT can be easily deployed for these types of operations and present additional features that were not available to the community before

Adds the 10,000Hz to 10 secondes band to regular MT observatories

Remotely inspect and process broadband data : no more “too short recordings”

Monitor EM effects of events related to volcanism , seismic activities, etc