Geophysical logging services: groundwater hydraulics, borehole geophysics and quality inspection of ground-source heat probe (borehole heat exchanger) systems.
André Voutta Grundwasserhydraulik
HerrenbergNew on Amplifa
About us
André Voutta Grundwasserhydraulik is a sole proprietorship based in Herrenberg (Baden-Württemberg) specializing in geophysical logging services. The services offered include groundwater hydraulic measurements, groundwater sampling, groundwater monitoring, geophysical investigations in boreholes, well inspections and geothermal data acquisition including quality inspection and monitoring of ground-source heat probes (borehole heat exchangers) and heat probe fields. A key focus is the verification of the annular backfill of ground-source heat probes using a modified gamma-gamma density logging probe that can be run through U-tube probes with an inner diameter of more than 20 mm, as well as temperature profile measurements and short thermal response tests (K-TRT). To develop the measurement technology, a study on gamma-gamma density anomaly measurements at pilot scale was carried out on behalf of LUBW Baden-Württemberg. The evaluation and interpretation of measurement results as well as professional support of clients during the tests are part of the service concept. Customers include engineering consultancies, drilling companies, building services planners, architects and public authorities.
- Site
- Herrenberg
- Processes
- Groundwater hydraulic measurements, Groundwater sampling, Groundwater monitoring, Geophysical investigations in boreholes, Well inspection, Geothermal data acquisition, Quality inspection of ground-source heat probes, Monitoring of ground-source heat probe fields
- Materials
- Gamma-gamma density measurement, Short thermal response test, Resting temperature measurement, Groundwater hydraulic measurements
- Certificates
- Calibration at calibration rig
- Industries
- Engineering consultancies, Drilling companies, Building services planning, Architecture, Public authorities, Geothermal energy
- 01
Initial consultation and test design
- 02
Probe logging runs (gamma-gamma density, temperature)
- 03
Data recording and depth-referenced visualization
- 04
Evaluation and interpretation of measurement results
- 05
Consulting and reporting to the client
Measurement technology and methods
Gamma-gamma density measurement
Geophysical method for detecting density anomalies in the annulus of ground-source heat probes; the modified probe can be run from > 20 mm inner diameter.
Short thermal response test
Temperature profile measurement with heated water to test the thermal behaviour of the annular backfill.
Resting temperature measurement
Depth-referenced temperature profile for assessing the integrity of the backfill.
Groundwater hydraulic measurements
Measurements for the hydraulic characterization of the subsurface and of wells.
Locations
Herrenberg
DEBusiness office
- Gamma-gamma density logging probe for ground-source heat probes (runnable from > 20 mm inner diameter)
- Miniaturized temperature sensor on depth encoder with steel cable, approx. 20 temperature readings/second
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Groundwater hydraulic measurementsTesting | – | – | – | – | – |
| Groundwater samplingTesting | – | – | – | – | – |
| Groundwater monitoringTesting | – | – | – | – | – |
| Geophysical investigations in boreholesTesting | – | – | – | – | – |
| Well inspectionTesting | – | – | – | – | – |
| Geothermal data acquisitionTesting | – | – | – | – | – |
| Quality inspection of ground-source heat probesTesting | – | – | – | – | – |
| Monitoring of ground-source heat probe fieldsTesting | – | – | – | – | – |
| Gamma-gamma density measurement (density anomaly measurement in the annulus of ground-source heatTesting | – | – | – | – | – |
| Short thermal response test (K-TRT) temperature profile measurementTesting | – | – | – | – | – |
| Resting temperature measurement (temperature profile in ground-source heat probes)Testing | – | – | – | – | – |
| Evaluation and interpretation of geophysical logging resultsEngineering | – | – | – | – | – |
| Verification of the effectiveness of ground-source heat probe remediations (remediation support)Engineering | – | – | – | – | – |
2 Anlagen & Maschinen
| Machine | Manufacturer / model | Quantity | Working area | Year built | Site |
|---|---|---|---|---|---|
| Gamma-gamma density logging probe for ground-source heat probes (modified, runnable from > 20 mm | – | – | Measurement radius limited to approx. 150 mm on the annulus | – | Herrenberg |
| Temperature sensor (miniaturized, on depth encoder with steel cable, approx. 20 temperature | – | – | – | – | Herrenberg |
Additional services
Reference customers
Quality
The logging probes are calibrated at a calibration rig that simulates a ground-source heat probe with various scenarios (continuous backfill, water- or air-filled annulus); the measurement results are recorded and documented with depth reference.
| Evidence | Herrenberg |
|---|---|
| Calibration at calibration rig |
History
- 2011
Technical article on demonstrating the sealing effect of the annular backfill in ground-source heat probes (bbr 12/2011)
- 2013
Study on gamma-gamma density anomaly measurements in the annulus of ground-source heat probes on behalf of LUBW Baden-Württemberg; technical article on verifying the effectiveness of a ground-source heat probe remediation (bbr 02/2013)