Diagnostics-while drilling: Reducing the cost of geothermal-produced electricity

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The goal of this document is to estimate the potential impact of proposed new Diagnostics-While-Drilling technology on the cost of electricity (COE) produced with geothermal energy. A cost model that predicts the COE was developed and exercised over the range of conditions found for geothermal plants in flashed-steam, binary, and enhanced-reservoir (e.g., Hot Dry Rock) applications. The calculations were repeated assuming that DWD technology is available to reduce well costs and improve well productivity. The results indicate that DWD technology would reduce the geothermal COE by 2--31%, depending on well depth, well productivity, and the type of geothermal reservoir. For ... continued below

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7 pages

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PRAIRIE,MICHAEL R. & GLOWKA,DAVID A. January 26, 2000.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM, and Livermore, CA (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

The goal of this document is to estimate the potential impact of proposed new Diagnostics-While-Drilling technology on the cost of electricity (COE) produced with geothermal energy. A cost model that predicts the COE was developed and exercised over the range of conditions found for geothermal plants in flashed-steam, binary, and enhanced-reservoir (e.g., Hot Dry Rock) applications. The calculations were repeated assuming that DWD technology is available to reduce well costs and improve well productivity. The results indicate that DWD technology would reduce the geothermal COE by 2--31%, depending on well depth, well productivity, and the type of geothermal reservoir. For instance, for a typical 50-MW, flashed-steam geothermal power plant employing 3-MW wells, 6,000-ft deep, the model predicts an electricity cost of 4.9 cents/kwh. With the DWD technology envisioned, the electricity cost could be reduced by nearly 20%, to less than 4 cents/kwh. Such a reduction in the cost of electricity would give geothermal power a competitive edge over other types of power at many locations across the US and around the world. It is thus believed that DWD technology could significantly expand the role of geothermal energy in providing efficient, environment-friendly electric generating capacity.

Physical Description

7 pages

Notes

OSTI as DE00751133

Source

  • World Geothermal Congress 2000 - Sustaining Geothermal Energy into the 21st Century, Fyushu-Tohoku, Japan, 05/28/2000--06/10/2000

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  • Report No.: SAND2000-0288C
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 751133
  • Archival Resource Key: ark:/67531/metadc710132

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Office of Scientific & Technical Information Technical Reports

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  • January 26, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 11, 2016, 2:56 p.m.

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PRAIRIE,MICHAEL R. & GLOWKA,DAVID A. Diagnostics-while drilling: Reducing the cost of geothermal-produced electricity, article, January 26, 2000; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc710132/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.