A high definition technique has been developed for simultaneously mapping electrical and magnetic characteristics of the ground. Each of the parameters may be measured at sub-metre intervals while continuously traversing either on foot or in a vehicle. Electric current, typically in the frequency range of 5 Hz to 200 Hz is induced in the ground by either galvanic of electromagnetic means. An optically pumped total field magnetometer continuously measures the natural and synthetic field changes from DC to the highest transmitted frequency. Real-time spectral analysis of the magnetic field changes allows a suite of geophysical parameters to be derived.
The geophysical measurements so obtained include, but are not limited to:
Because of its inherent cost-efficiency and superior spatial resolution, the SAM technique has the potential to significantly enhance geophysical mapping for mineral exploration, archaeological investigation and environmental studies of salinity, industrial waste and chemical contamination in soils.
Controlled source audio-frequency magnetotellurics (CSAMT) is a frequency-domain electromagnetic sounding technique which uses a fixed grounded dipole or horizontal loop as an artificial signal source. CSAMT is similar to the natural-source magnetotellurics (MT) and audio-frequency magnetotellurics (AMT) techniques; the chief differences center around the use of the artificial CSAMT signal source at a finite distance.
The source provides a stable, dependable signal, resulting in higher-precision and more economical measurements than are usually obtainable with natural-source measurements in the same spectral bands.
However, the controlled source can also complicate interpretation by adding source effects, and by placing certain logistical restrictions on the survey. In most practical field situations these drawbacks are not serious, and the method has proven particularly effective in mapping the top 2 to 3 km of the earth's crust.
This Artificial Intelligence (AI)-Driven Softwareaccelerates Oil and Gas finding using a unique approach to facies mapping to enhance petroleum systems knowledge and reservoir definition. Seisnetics brings geological relevance to seismic data and leads to precise well placement in frontier and mature basins. Every seismic waveform is optimized to mine crucial information from your entire 3D volume.
Seisnetics uses a patented genetic processing algorithm to automatically segment volumes of data into populations of genetically related waveforms.
Once the process has finished virtually all populations, Peak and Trough Surfaces, are identified and the "GeoPopulations" saved into a 3D visual database. The visual database enables the user to review, sort, filter or export Trough or Peak surface attributes for any or all desired GeoPopulations. Alternatively, the user may choose further processing options available within the viewer for more geologically constrained analysis (e.g. Seismic Facies Maps, etc.,).
The Seisnetics process is independent, unbiased, extremely fast and can work efficiently with either small or very large data volumes. Consequently, it is often used anywhere single or multiple volumes of seismic data would benefit from a timely, accurate, robust and independent assessment.
The seismic volume can be seen as a Population of individuals (traces/chromosomes) which can be segmented into waveforms/genes.