Exploration Technique: Exploratory Boreholes
|Exploration Technique Information|
|Exploration Group:||Drilling Techniques|
|Exploration Sub Group:||Exploration Drilling|
|Parent Exploration Technique:||Exploration Drilling|
|Information Provided by Technique|
|Lithology:||Can provide core or cuttings|
|Stratigraphic/Structural:||Identify stratigraphy and structural features within a borehole|
|Hydrological:|| -Water samples can be used for geochemical analysis|
-Fluid pressures can be used to estimate flow rates
|Thermal:|| -Temperatures can be measured within the hole|
-Information about the heat source
Note: the terms exploratory wells and exploratory boreholes have been used interchangeably in the geothermal and oil and gas industries. Technically the difference is that a borehole does not produce fluid and a well does.
A pressure temperature log is generated from a tool sent down a hole, similar to TGH, but accounts for other properties. A pressure temperature log can be done in an exploratory borehole. See Pressure Temperature Log to learn more about this technique.
Jennejohn, 2009, http://www.novoco.com/energy/resource_files/reports/geo_rd_1209.pdf