Exploration Technique: Hydroprobe
|Exploration Technique Information|
|Exploration Group:||Drilling Techniques|
|Exploration Sub Group:||Exploration Drilling|
|Parent Exploration Technique:||Exploration Drilling|
|Information Provided by Technique|
|Hydrological:||Collection of ground water samples for geochemistry and geothermometry|
|Thermal:||Temperature measurements down to 50 m|
A hydroprobe is a relitively inexpensive and easily portable truck mounted drill rig that can reach up to 50 m depth. The drill rig is direct push technology and drives a 1 ½ inch hollow tube into the ground. This technology allows for a relatively quick and easy method for collecting ground water samples and temperature measurements from up to 50 m depth. This method is easy to permit and leaves very little environmental impact.
The hydroprobe method is an intermediate step between a 2-M Probe Survey and drilling Thermal Gradient Holes. It is more expensive than a 2-m probe survey but reaches much greater depths and allows for ground water sampling. It is less expensive, time consuming, and has less environmental impact compared to drilling thermal gradient holes but does not reach as great of depths and has limitations because it cannot drill through bedrock. The main goals of a hydroprobe survey is to obtain temperature gradient measurements and groundwater samples for geochemical analysis.
Due to the direct push technology a hydroprobe survey must be conducted over soil, loose sediment, or alluvium.
• Hydroprobe rig is confined to roads
• This technique cannot penetrate bedrock
- Richard Zehner (U.S. Department of Energy). 2010. Effectiveness of Shallow Temperatures Surveys to Target a Geothermal Reservoir at Previously Explored Site at Mcgee Mountain Nevada. Reno, NV: U.S. Department of Energy.
|Page||Area||Activity Start Date||Activity End Date||Reference Material|
|Hydroprobe At Gabbs Valley Area (DOE GTP)||Gabbs Valley Area||
|Hydroprobe At Mcgee Mountain Area (DOE GTP)||Mcgee Mountain Area|