Colado Geothermal Resource

Geothermal exploration

The Oreana Energy Colado Geothermal Project consists of approximately 1,240 acres.

Eighteen temperature gradient holes (~500ft), two intermediate-depth holes (~1,500ft) and an 8,000 ft exploratory well have been drilled in the area. Subsurface temperatures have demonstrated a shallow outflow zone in the western portion of the lease area with maximum temperatures in excess of 210°F at depths of 300 -500 feet below surface. To the east a deep exploratory well indicated a maximum temperature of 282°F at 7,000 ft, suggesting the primary upflow zone of the geothermal system is associated with typical Basin and Range structures along the west side of the Humboldt Range. Similar existing geothermal systems occur along this trend e.g. Rye Patch (20 miles NE); Brady's (50 miles to the SW).

In addition to drilling, extensive geophysical and geochemical studies have been completed including gravity and magnetic, dc resistivity soundings and profiling, time domain EM, scalar MT-AMT and telluric profiling. Getty Oil completed the initial exploration, drilling and development in the area assisted by University of Utah under grant funds from the US Department of Energy. Some of this data is old and should be updated using newer techniques; however the lease area was recognized in the late 1970's, and early 1980's as one which warranted exploration focus.