Accession Number:

AD0774108

Title:

Ultra-Deep Drilling for Geothermals

Descriptive Note:

Final rept.

Corporate Author:

TETRA TECH INC ARLINGTON VA

Personal Author(s):

• Patterson, Samuel O.
• Sables, Bruno E.
• Kooharian, Anthony

Report Date:

1973-12-01

Pagination or Media Count:

144.0

Abstract:

Geothermal energy offers significant promise as a source of clean, widely available power. The first stage of its availability involves near surface sources the second, abnormal thermal gradients and the third stage, deep wells. This report assesses the potential and limitations of rotary drilling for deep geothermal systems. The assessment found that hot, dry rock geothermal energy produced from wells in the 35-40,000-ft range offers good potential to provide clean energy, a self-contained or independent energy source, no resupply for special problem maintenance systems, and the promise of economic competitiveness up to 100 Mw.

Descriptors:

• *DRILLING
• *GEOTHERMY
• ELECTRIC POWER PRODUCTION
• FEASIBILITY STUDIES

Subject Categories:

• Mining Engineering
• Electric Power Production and Distribution

Distribution Statement:

APPROVED FOR PUBLIC RELEASE