Ambient Flow Profiling
The Ambient Flow Profiling Service uses a unique technology developed by BESST which involves profiling the well during non-pumping static conditions. The Ambient Flow Profiling Service utilizes the DyeTracer system developed by the U.S. Geological Survey that injects small quantities of diluted rhodamine dye solution into the well. The dye then moves with the hydraulic gradient within the well. There are two fiber optic sensors vertically situated to detect the dye once it is released into the well. One is located below the injection nozzle, and the other is positioned above the injection nozzle. These two fiber optic sensors apply laser technology to detect the time it takes for the dye to move from the injection nozzle to the sensors, which determines the velocity and direction of the flow.
A ground surface based control unit contains the laser, the laser output, beam splitter, photon receivers, signal amplifiers, return photonic input channels for the fiber optic cables and diopters that convert light signals to voltage. Military grade fiber optic cables allows for laser-beam transmission and photonic emission return to the signal processing unit (SPU). The laser beam wavelength is transmitted at a bandwidth between 540 to 560 nanometers which is the specific spectral band that causes the Rhodamine Red FWT 50 tracer to fluoresce.
The diagnostic data obtained utilizing the Ambient Flow Profiling Service provides insight into potential risks to the water quality of critical assets through the process of vertical and lateral mass transfer within an aquifer.
- To determine pathways of water migration into a well.
- To determine mass transfer of contaminants throughout the well.
- To delineate flow contribution and flow velocity zone by zone along the screened section of the well.
- To delineate zonal percentage contribution along the screened section of the well.
- To develop a customized sampling plan for water quality analysis.
- To delineate plume migration within a well field.
- Compares zonal contribution under static conditions vs. dynamic conditions.
Combining BESST’s HydroBooster sampling system with the Ambient Flow Profile has produced diagnostic data that has revealed opportunities for a variety of different well modifications. Installation of sleeves and packers at precise depths along well screens has reduced the amount of contaminants entering the well. In turn, this has reduced water treatment costs that have been estimated to nearly 80 percent annually.
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- Technology Overview
- Example report