noun
production well
Technical term used especially in geothermal power contexts, referring to a well that extracts steam or hot water for energy production.
この地熱発電所では、複数の生産井から蒸気を取り出している。
At this geothermal power plant, steam is extracted from multiple production wells.
A reinjection well that returns used geothermal fluid back underground, contrasting with a production well that extracts it.
Compound of 生産 (production) and 井 (well). The exact historical derivation is uncertain, but the term is a straightforward technical coinage.