The Hydraulic Profiling Tool (HPT), is one of the High Resolution Vertical Profiling tools which COLUMBIA Technologies offers to create fast, continuous real-time profiles of soil hydraulic properties in both fine- and coarse grained material for environmental site assessments and characterizations. HPT uses direct pressure response measurements of hydraulic permeability to determine migration pathways, remediation injection regions, and placements for monitoring wells.
What is the Hydraulic Profiling Tool ideal for?
- The starting point of an investigation
- Locating and defining preferential migration pathways for contaminants in the subsurface
- Targeting zones for injection of remediation material
- Selecting screen well intervals, evaluating locations to detect slug tests, and measuring static water conditions across a site
What are some of the benefits for applying a Hydraulic Profiling Tool as an indicator for migration pathways, remediation injection regions, and placements for monitoring wells?
- Locate and define better migration pathways for contaminants
- Discover specific regions for injection of remediation material
- Determine where to screen monitor wells
- Identify the aquifer and confining units
How can a Hydraulic Profiling Tool be applied at my specific site?
The Hydraulic Profiling Tool (HPT) uses direct pressure response measurements of hydraulic permeability to determine migration pathways, remediation injection regions, and placements for monitoring wells.
The pressure response of the soil to injection of water is measured to indicate the soil grain size. Real-time continuous data can be produced in both fine and coarse grained material with saturated or unsaturated conditions.
The system consists of two sensors:
- A sensitive downhole transducer to record dynamic pore pressure
- An electrical conductivity sensor providing information on lithology
While most soil profiling methods infer permeability from parameters like grain size or geotechnical properties, the HPT system can measure continuous data on hydraulic permeability directly by injecting water into the formation. Additionally, the Hydraulic Profiling Tool can conduct static dissipation tests at individual depths. This data is used to determine static water level (or head pressure in confined aquifers) and hydraulic conductivity.
The Hydraulic Profiling Tool can be used in combination with an Electrical Conductivity (EC) probe to provide indication of general soil particle size which can help determine zones of sands, silts, and clays. Using the EC logs you can define zones of lower conductivity which allows the movement of contaminants into the subsurface.
Since our sensors can be deployed from any type of Geoprobe (ranging from all-terrain track rigs to confined-space dolly mounts) we can increase your reach in locations that would typically be difficult to access. High-resolution data produced from the HPT systems allows you to precisely select locations and depths for injections with greater confidence.
Go from the Hydraulic Profiling Tool page to our High Resolution Vertical Profiling services page.
Do you want to further discuss the possibilities of using Hydraulic Profiling Tool technology at your specific site? Complete the form below and we’ll contact you to discuss your scope of work in greater detail.
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