also: じねつせい
geothermal well
Technical term in geology and energy engineering for a well drilled to extract geothermal heat.
この地域では地熱井を掘削して発電に利用している。
In this region, geothermal wells are drilled and used for power generation.
Standard kanji spelling for this technical term.
Alternate reading; ちねつせい is more common.
Compound of 地熱 (geothermal heat) and 井 (well).