oil field

An area under which are reserves of petroleum, especially one with productive oil wells.

Japanese Meaning

油田：地下に石油の埋蔵がある区域、特に採油井が稼働し、石油が生産される地域

The company bought a large section of the oil field to expand its drilling operations.

その会社は掘削作業を拡大するために油田の広い区画を購入した。

Sense（1）

An area under which are reserves of petroleum, especially one with productive oil wells.

oil fields

（ plural ）