NEDO has been conducting the "Development of Drilling and Production Technology for Deep-seated Geothermal Resources" project since 1994. The contents of the project can be divided into two categories: development of drilling technology and development of production technology. This paper outlines the progress of production technology development.

Some production technologies have reached the stage of field testing, and others are in the manufacturing stage after the completion of basic research. All of the production technologies being developed in this project are expected to be useful not only for deep-seated geothermal resources, but also for high-temperature shallow geothermal reservoirs.
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