Development of drilling and production technology for deep geothermal resources

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:494412

Isaka, Shinichi; Ikawa, Terumichi; Akazawa, Tsukashi ^[1]

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1. New Energy and Industrial Technology Development Organization (NEDO), Tokyo (Japan)

Promising deep geothermal resources are believed to exist under geothermal reservoirs (shallow geothermal resources) that are already being exploited. These currently unutilized resources are expected to contribute to the expansion of geothermal power generation capacity in the near future. To ensure that deep geothermal resources can be exploited safely, efficiently, and economically, NEDO is developing appropriate technologies. The content of the technological development in this project consists of the {open_quotes}development of drilling technology for deep geothermal resources{close_quotes} and the {open_quotes}development of production technology for deep geothermal resources{close_quotes} which includes technology to survey the physical, chemical and fluid conditions of deep geothermal wells and technology for preventing scale. This paper outlines the progress of NEDO`s technological development for exploiting deep geothermal resources, focusing mainly on drilling technology. The development of drilling technologies has been carried out to enable conventional drilling systems to endure high temperatures of up to 350 deg.C. at the bottom of deep wells. The other aim of this development is to reduce drilling costs by drilling efficiently and shortening the duration of drilling projects.

• OSTI ID: 494412
• Report Number(s): CONF-960913--
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
42 ENGINEERING
DRILLING
EXPLORATION
GEOTHERMAL RESOURCES
GEOTHERMAL WELLS
JAPAN
ROCK DRILLING
TECHNOLOGY ASSESSMENT
WELL COMPLETION