Tool comparison
Compare the high-resolution site characterization (HRSC) logging tools by what they carry and what they detect, or start from what your investigation has to establish and read across to the tool that does it.
By tool
Optical Image Profiler with Hydraulic Profiling Tool
- Sensors
- Fluorescence Camera (UV or Green)
- HPT Pressure
- Electrical Conductivity
- Target compounds
- NAPL: petroleum fuels, creosote, coal tar, heavy oils. Camera wavelength selected based on target compounds.
LIF source: lamp-induced for UV and UV-Range; laser-induced for Green
Membrane Interface Hydraulic Profiling Tool
- Sensors
- PID (photoionization)
- FID (flame ionization)
- XSD (halogen-specific)
- HPT Pressure
- Electrical Conductivity
- Target compounds
- Dissolved, sorbed, and vapor-phase VOCs: petroleum hydrocarbons, chlorinated solvents, mixed plumes
Also available as Low Level MIHPT (~10× sensitivity increase) for trace-level detection
Groundwater Profiler
- Sensors
- Discrete Interval Sampling
- HPT Pressure (uphole)
- Target compounds
- All dissolved-phase contaminants (depth-discrete samples for laboratory analysis)
HPT Groundwater Sampler
- Sensors
- Discrete Interval Sampling
- HPT Pressure
- Electrical Conductivity
- Target compounds
- All dissolved-phase contaminants (depth-discrete samples for laboratory analysis)
Hydraulic Profiling Tool
- Sensors
- HPT Pressure
- Electrical Conductivity (Wenner array)
- Target compounds
- N/A, measures formation properties, not contaminants
By objective
Choose an objective to see which tools answer it.
Common petroleum NAPL: gasoline, diesel, jet fuel, motor oil, and fuel oils, by lamp-induced fluorescence.
Heavy NAPL: creosote, coal tar, heavy crude, and bunker fuels, by laser-induced fluorescence.
Chlorinated DNAPL (dense non-aqueous phase liquid): the halogen-specific XSD separates chlorinated compounds from everything else in the log.
The XSD is halogen-specific, so chlorinated compounds separate from everything else in the same log.
Samples at multiple depths for the laboratory, at the plume edge where the signal fades.
PID and FID screen the dissolved, sorbed, and vapor phase against depth, including mixed plumes.
Samples at multiple depths for the laboratory, at the plume edge where the signal fades.
Pulsed carrier gas in place of continuous flow, for work below standard MIHPT detection limits.
Injection pressure and electrical conductivity against depth: the transmissive zones, the confining layers, and the pathways between them.
The same permeability and conductivity logs, with NAPL screening in the same push.
The same permeability and conductivity logs, with VOC screening in the same push.
Injection pressure shows where the formation will take a remedy, and where a screen should sit.
Adds where the NAPL is, so the design reaches the contamination and not only the permeable zone.
Adds where the VOCs are, so the design reaches the contamination and not only the permeable zone.
Samples at multiple depths chosen off the HPT log, for vertical characterization with laboratory data.
Maps the permeable pathways and confining layers that control where PFAS travels, so samples are taken at the depths that matter.
No direct-sensing tool detects these analytes, so the answer is depth-discrete water for the laboratory.
For NAPL: logs the product before treatment and again after it.
For VOCs: screens the treated zone before treatment and again after it.
Samples at multiple depths for the laboratory, to confirm the result.
Tell us about your site and we’ll recommend the optimal HRSC logging tool for your investigation objectives.