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Idemitsu and Partners Start Geothermal Drilling Surveys in Japan

Idemitsu Kosan Co. (5019), Inpex Corp. (1605) and Mitsui Oil Exploration Co. began drilling surveys at two locations in northern Japan for geothermal power.

The surveys are being conducted at the Kurikoma national park in Akita prefecture and the Amemasudake area in Hokkaido, the companies said in a statement today.

The partners will continue the study through November, according to the statement. The companies plan to drill more exploratory wells at both sites until March 2016 before deciding whether to move on to the next phase of the study.

The next stage includes the drilling of production pilot wells, tests for steam production and hot water re-injection, the companies said in the statement.

To contact the reporter on this story: Chisaki Watanabe in Tokyo at

To contact the editor responsible for this story: Reed Landberg at

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