Whitepapers & Tech Notes

Superior Technology for Surface Magnetic Resonance Measurements of Hydrogeologic Properties
Read this new whitepaper from Vista Clara to gain a deep understanding of the key considerations in selecting and deploying a Surface Magnetic Resonance system.

While Surface MR is a powerful geophysical method that provides direct non-invasive detection and imaging of groundwater, successful results depend on the ability to obtain reliable and accurate results. Carefully choosing the optimal combination of sophisticated hardware and software can make all the difference. Choosing the wrong instrument can result in unreliable data, lost investment and potentially physical injury to users or bystanders.

GMR WhitpaperThis whitepaper addresses critical issues including:

  • Overview of the Surface Magnetic Resonance methodology
  • Requirements of Surface Magnetic Resonance Equipment
  • Safety Engineering and Risks of Unsafe Equipment
  • Mitigating Electrical Risks to Operators and Bystanders
  • Assuring Reliable Data in Every Situation and Environment
  • Equipment Engineered for Durability and Longevity
  • User-Friendly Processing and Visualization

Download the Surface Magnetic Resonance whitepaper here

Technical Note: Multi-frequency NMR Logging

This Technical Note provides a detailed discussion of the benefits of multi-frequency NMR logging. Nearly all modern NMR logging tools have the ability to perform NMR measurements at multiple frequencies during a single logging run. This multi-frequency measurement capability provides many critical operational benefits, including improving the signal-to-noise ratio of the measurements and enabling faster logging (Coates et al., 1999).

Vista Clara’s full line of Javelin and Dart magnetic resonance (NMR) logging probes offer this capability, operating at multiple frequencies to offer the following unique benefits:

Operation in a wider range of wells and boreholes: Multi-frequency logging probes are like having multiple probes in one, so a single probe can satisfy a wider range of conditions than a single-frequency probe.
Faster logging and improved signal-to-noise ratio: Multi-frequency logging improves time efficiency of data collection by allowing measurements at each frequency to overlap in time. These efficiency gains permit more measurements in the same time interval as a single-frequency system. This allows faster logging than a single-frequency system, or improved signal-to-noise ratio the same logging speed.
Resilience to EM interference: Multi-frequency NMR logging increases the likelihood of obtaining usable data in environments with high levels of electromagnetic interference (EMI), where single-frequency logging can yield unusable data.
Multiple Radial Distances: Multi-frequency logging provides independent information at multiple radial distances from the logging probe. This offers the ability to assess borehole conditions and drilling disturbance, thereby offering a quality control metric and process that is unavailable with a single-frequency NMR logging tool.
Click here to read the full Technical Note on Multi-Frequency NMR Logging