Nuclear Magnetic Resonance Geophysics Solutions for
Environmental Remediation
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High Resolution Site Characterization (HRSC)
Measure the most important hydrogeologic properties governing contaminant storage and transport.
- Volumetric water content, bound and mobile porosity, hydraulic conductivity and transmissivity
- Accurate high-resolution conceptual site models
- Identify contaminant location and their mobility
- Inform Remediation Planning
- Estimate contaminant mass flux transfer
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Solution 1
- Obtain high resolution hydrogeologic information from existing PVC-cased monitoring wells.
- Directly measures fluid signal in the formation, outside of the zone of disturbance.
- Wide variety of Javelin® tools available to log wells with different diameters and different constructions.
- As compared to slug tests or pumping tests, Javelin®
provides a continuous high-resolution log of permeability and porosity along the well. - Provides estimation of other primary hydrological properties bound and effective porosity, relative pore-size distribution, and direct sediment classification.
- Javelin® can be used to estimate contaminant migration and mass flux using existing monitoring wells.
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solution 2
- Provides high-resolution logging data to resolve very fine subsurface layers.
- Can we be used in small diameter shallow PVC wells or deployed via Direct push or CPT drill rigs.
- In comparison to HPT-estimated hydraulic conductivity, Dart™ NMR technology is capable of estimating hydraulic conductivity up to 3000m/day, making it possible to accurately differentiate between different types of highly permeable sediments, such as gravels and various grades of sands.
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Solution 3
- Non-invasive technology for groundwater detection and monitoring.
- Can be used at sites where drilling or Direct push applications are not feasible or too expensive.
- Compared to other non-invasive methods, GMR provides unambiguous detection and mapping of saturated permeable zones.
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Environmental Monitoring
Our NMR technology provides reliable and accurate monitoring of remediation processes without any new drilling.
- Monitoring bio-geochemical processes
- Vadose zone characterization
- Soil moisture monitoring
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Solution 1
- Can we be used in already existing monitoring wells to directly monitor changes in the formation water signal associated with progress of remediation processes.
- Javelin® provides continuous log to longitudinally obtain changes in the formation.
- Effective used to monitor seasonal changes and biochemical processes directly in the formation including biofouling, mineral precipitation, and gas formation.
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Solution 2
- High-resolution logging data to monitor changes in shallow subsurface in small diameter PVC wells via Direct push or CPT drill rigs.
- Dart™ can effectively monitor change in porosity and permeability due to progression of various remediation processes.
- Dart™ can effectively monitor the change in water content in vadose zone.
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Permafrost Examination
Our NMR technology provides reliable detection and monitoring of permafrost
- Unambiguously differentiate unfrozen water from frozen
- Monitor seasonal thawing processes over time
![](https://vista-clara.s3.amazonaws.com/wp-content/uploads/2024/01/09101113/solutions-3-GMR.jpg)
Solution 1
- Non-invasive technology that can be used in variety of remote location to detect and monitor changes in permafrost.
- The technology is capable of detecting unfrozen water content and thaw.
![](https://vista-clara.s3.amazonaws.com/wp-content/uploads/2024/01/09101114/solutions-3-dart.png)
Solution 2
- Light-weight and man-portable NMR technology.
- Dart provides high-resolution monitoring of subsurface changes in water content, porosity and permeability associated with changing thaw.
![NAPL Contaminated Site](https://vista-clara.s3.amazonaws.com/wp-content/uploads/2024/06/09100422/NAPL-contaminated-site.png)
Hydrocarbon Detection
Our borehole logging tools have strong magnetic field gradient and thus capable to perform diffusion-based NMR measurement to detect and quantify different fluid types.
- Detection and monitoring of bulk NAPL (non-aqueous phase liquid) contaminants
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Solution 1
- Can be used in already existing PVC-cased wells to detect and monitor hydrocarbons in the subsurface.
- The technology is capable to quantify the hydrocarbon content directly within the formation.
![](https://vista-clara.s3.amazonaws.com/wp-content/uploads/2024/01/09101134/hero-services-nmr-1024x814.jpg)
Solution 2
- High radial gradient of Dart tools provides efficient means to effectively detect and quantify hydrocarbons in shallow subsurface.
- The system can we used to log 2-inch PVC monitoring wells or used to quantify hydrocarbons via Direct push deployment.
- Dart provides continuous measurement of total water content, bound and mobile porosity, as well permeability is obtained.